EVT_AUDIO_SENSORS_BUFFER - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// audiosensors.h
EVT_AUDIO_SENSORS_BUFFER EvtAudioSensorsBuffer;
NTSTATUS EvtAudioSensorsBuffer(
PVOID Context,
AUDIO_MODULE_ID ModuleId,
ULONG SensorsSessionId,
PULONG BufferSize,
PVOID Buffer
)
{...}
View the official Windows Driver Kit DDI referenceNo description available.
The EVT_AUDIO_SENSORS_BUFFER callback function is used for buffer operations between audio drivers and audio sensors drivers. This callback has multiple uses including getting buffers, setting buffers, and submitting read reports.
ContextA pointer to the audio sensors driver-supplied context.
ModuleIdAn AUDIO_MODULE_ID structure that identifies the target audio module.
SensorsSessionIdThe session identifier returned by the EVT_AUDIO_SENSORS_START_SESSION callback. A value of 0 indicates a request that is not associated with any specific audio sensors session.
BufferSizeA pointer to a ULONG that contains the size of the buffer in bytes. On input, this specifies the size of the buffer provided. On output, this may be updated to indicate the actual buffer size used or required.
BufferAn optional pointer to a proprietary buffer used for data exchange. The buffer size is specified by the BufferSize parameter.
Returns an NTSTATUS value. Return STATUS_SUCCESS if the operation succeeds. Otherwise, return an appropriate NTSTATUS error code.
The EVT_AUDIO_SENSORS_BUFFER callback function type is used for three different buffer operations in the audio sensors interface:
The specific operation depends on which function pointer in the AUDIO_SENSORS_INTERFACE_V0100 structure is being used.
The SensorsSessionId parameter links operations to a specific sensor session created by EVT_AUDIO_SENSORS_START_SESSION. When the value is 0, the operation is not associated with any specific session.