ACX_STREAMAUDIOENGINE_CALLBACKS結構 (acxelements.h)

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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

另請參閱