ACX_STREAMAUDIOENGINE_CALLBACKS結構 (acxelements.h)
ACX_STREAMAUDIOENGINE_CALLBACKS 結構可識別 ACX 串流音訊引擎作業的驅動程式回呼。
語法
typedef struct _ACX_STREAMAUDIOENGINE_CALLBACKS {
ULONG Size;
PFN_ACX_STREAMAUDIOENGINE_ASSIGN_EFFECTS_STATE EvtAcxStreamAudioEngineAssignEffectsState;
PFN_ACX_STREAMAUDIOENGINE_RETRIEVE_EFFECTS_STATE EvtAcxStreamAudioEngineRetrieveEffectsState;
PFN_ACX_STREAMAUDIOENGINE_RETRIEVE_PRESENTATION_POSITION EvtAcxStreamAudioEngineRetrievePresentationPosition;
PFN_ACX_STREAMAUDIOENGINE_ASSIGN_CURRENT_WRITE_POSITION EvtAcxStreamAudioEngineAssignCurrentWritePosition;
PFN_ACX_STREAMAUDIOENGINE_RETRIEVE_LINEAR_BUFFER_POSITION EvtAcxStreamAudioEngineRetrieveLinearBufferPosition;
PFN_ACX_STREAMAUDIOENGINE_ASSIGN_LAST_BUFFER_POSITION EvtAcxStreamAudioEngineAssignLastBufferPosition;
PFN_ACX_STREAMAUDIOENGINE_ASSIGN_LOOPBACK_PROTECTION EvtAcxStreamAudioEngineAssignLoopbackProtection;
PFN_ACX_OBJECT_PROCESS_REQUEST EvtAcxStreamAudioEngineProcessRequest;
} ACX_STREAMAUDIOENGINE_CALLBACKS, *PACX_STREAMAUDIOENGINE_CALLBACKS;
成員
Size
這個結構的長度，以位元組為單位。
EvtAcxStreamAudioEngineAssignEffectsState
EVT_ACX_STREAMAUDIOENGINE_ASSIGN_EFFECTS_STATE回呼。
EvtAcxStreamAudioEngineRetrieveEffectsState
EVT_ACX_STREAMAUDIOENGINE_RETRIEVE_EFFECTS_STATE回呼。
EvtAcxStreamAudioEngineRetrievePresentationPosition
EVT_ACX_STREAMAUDIOENGINE_RETRIEVE_PRESENTATION_POSITION回呼。
EvtAcxStreamAudioEngineAssignCurrentWritePosition
EVT_ACX_STREAMAUDIOENGINE_ASSIGN_CURRENT_WRITE_POSITION回呼。
EvtAcxStreamAudioEngineRetrieveLinearBufferPosition
EVT_ACX_STREAMAUDIOENGINE_RETRIEVE_LINEAR_BUFFER_POSITION回呼。
EvtAcxStreamAudioEngineAssignLastBufferPosition
EVT_ACX_STREAMAUDIOENGINE_ASSIGN_LAST_BUFFER_POSITION回呼。
EvtAcxStreamAudioEngineAssignLoopbackProtection
EVT_ACX_STREAMAUDIOENGINE_ASSIGN_LOOPBACK_PROTECTION回呼。
EvtAcxStreamAudioEngineProcessRequest
EVT_ACX_OBJECT_PROCESS_REQUEST回呼。
備註
範例
範例使用方式如下所示。
ACX_STREAMAUDIOENGINE_CALLBACKS streamAudioEngineCallbacks;
// Create the AudioEngine element to control offloaded streaming.
ACX_STREAMAUDIOENGINE_CALLBACKS_INIT(&streamAudioEngineCallbacks);
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineAssignEffectsState = CodecR_EvtAcxStreamAudioEngineAssignEffectsState;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineRetrieveEffectsState = CodecR_EvtAcxStreamAudioEngineRetrieveEffectsState;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineRetrievePresentationPosition = CodecR_EvtAcxStreamAudioEngineRetrievePresentationPosition;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineAssignCurrentWritePosition = CodecR_EvtAcxStreamAudioEngineAssignCurrentWritePosition;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineRetrieveLinearBufferPosition = CodecR_EvtAcxStreamAudioEngineRetrieveLinearBufferPosition;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineAssignLastBufferPosition = CodecR_EvtAcxStreamAudioEngineAssignLastBufferPosition;
streamAudioEngineCallbacks.EvtAcxStreamAudioEngineAssignLoopbackProtection = CodecR_EvtAcxStreamAudioEngineAssignLoopbackProtection;
ACX 需求
最低 ACX 版本： 1.0
如需 ACX 版本的詳細資訊，請參閱 ACX 版本概觀。
規格需求
| 需求 | 值 |
|---|---|
| 標頭 | acxelements.h |