如何控制音效卡 - Delphi K.Top 討論區

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如何控制音效卡

答題得分者是：axsoft

newken 一般會員發表：26 回覆：52 積分：15 註冊：2003-03-26 發送簡訊給我	#1 引用回覆回覆發表時間：2003-06-26 17:06:08 IP:163.28.xxx.xxx 未訂閱請問各位新進：小弟想要控制音效卡，但不知如何下手，請問各位先進我該如何著手呢謝謝
axsoft 版主發表：681 回覆：1056 積分：969 註冊：2002-03-13 發送簡訊給我	#2 引用回覆回覆發表時間：2003-06-26 18:10:58 IP:61.218.xxx.xxx 未訂閱引言: 請問各位新進：小弟想要控制音效卡，但不知如何下手，請問各位先進我該如何著手呢謝謝 < face="Verdana, Arial, Helvetica"> 您可以透過"WINMM.DLL"來控制您的音效卡,透過waveOutGetNumDevs()來偵測音效卡的狀態 http://developerfusion.com/show/264/ winmm.lib is an import library for winmm.dll. winmm.lib is in the lib directory of your C compiler normally. I am not sure what you need for C Builder. Check the C Builder documentations (multimedia section such as the PlaySound function, or the mixerOpen function). 這有個範例 http://www.codeguru.com/multimedia/ADMixer.shtml Audio Mixer Functions Demo <!-- Author and contact details -->This article was contributed by Chen Su.<!-- For which environment is this code specific??? --> Environment: Visual C 6.0 with Service Pack 3, Windows 9x, Windows NT 4.0 with Service Pack 6a, and Windows 2000 Audio Mixer Functions are a set of functions that control the routing of audio lines to a destination device for playing or recording. They can also control volume and other effects. Although there are only ten functions and two messages in this API, some people feel it's a little difficult to use them because of the flexibility. Here I am going to present four simple programs to demonstrate how to use this powerful API. I kept these four programs as simple as possible and one program does one thing only so that you can understand them easily. I also tried to separate the actual operations from the user interface as much as possible. All the functions related to Audio Mixer Functions have the prefix "amd". I did not write C classes for those functions as the main purpose here is to give you a tutorial. To master this API, you may read the Platform SDK documentation on Audio Mixers and play around with these four programs. You may also wish to check out the Platform SDK Audio Sample Mixapp: Sample Mixer Application," which is not so easy to read. To better understand Audio Mixer Functions, keep in mind the following key facts. There are zero, one, or more audio mixer devices in a system. Each audio mixer device has one or more destination audio lines. Each destination audio line has zero, one, or more source audio lines associated with it. Each (destination or source) audio line has zero, one, or more mixer controls associated with it. A mixer control can perform any number of functions (such as control volume), depending on the characteristics of the associated audio line. All four programs are MFC dialog-based. For the sake of brevity, they always use the first mixer device if there is more than one mixer device present in the system. The mixerOpen function is called with the CALLBACK_WINDOW flag in the fdwOpen parameter and a window handle in the dwCallback parameter in Programs 1, 2, and 4 so that the MM_MIXM_CONTROL_CHANGE message can be received in order to refresh the state of the controls. Program 1. Master Mute <!-- Sample image - gif or jpg --> This program is equivalent to the "Mute all" check box of the Windows Volume Control for Playback. The Master Mute control is the MIXERCONTROL_CONTROLTYPE_MUTE control of the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS destination audio line. It belongs to the switch controls (MIXERCONTROL_CT_CLASS_SWITCH), which are two-state switches. It uses the MIXERCONTROLDETAILS_BOOLEAN structure to retrieve and set control properties. Whenever the check box is clicked, CMuteDlg::amdSetMasterMuteValue is called to set the Master Mute value accordingly. The MM_MIXM_CONTROL_CHANGE message is received once the state of the Master Mute control has changed. In this case, CMuteDlg::amdGetMasterMuteValue is called to retrieve the current value of the Master Mute control and update the state of the check box accordingly. Download Program 1 - 77 Kb Program 2. Master Volume <!-- Sample image - gif or jpg --> This program is equivalent to the "Volume Control" trackbar of the Windows Volume Control for Playback. The Master Volume control is the MIXERCONTROL_CONTROLTYPE_VOLUME control of the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS destination audio line. It belongs to the fader controls (MIXERCONTROL_CT_CLASS_FADER), which have a linear scale. It uses the MIXERCONTROLDETAILS_UNSIGNED structure to retrieve and set control properties. Whenever the trackbar is clicked, CVolumeDlg::amdSetMasterVolumeValue is called to set the Master Volume value accordingly. The MM_MIXM_CONTROL_CHANGE message is received once the state of the Master Volume control has changed. In this case, CVolumeDlg::amdGetMasterVolumeValue is called to retrieve the current value of the Master Volume control and update the state of the trackbar accordingly. Download Program 2 - 77 Kb Program 3. Wave Meter <!-- Sample image - gif or jpg --> This program is equivalent to the "Wave Meter" control of the Windows Volume Control for Playback. The Wave Meter control is the MIXERCONTROL_CONTROLTYPE_PEAKMETER control of the MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT source audio line associated with the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS destination audio line. It belongs to the meter controls (MIXERCONTROL_CT_CLASS_METER), which measure data passing through an audio line. It uses the MIXERCONTROLDETAILS_SIGNED structure to retrieve and set control properties. A timer is created to monitor the value of the Wave Meter control. CMeterDlg::amdGetWaveMeterValue is called to retrieve the current value of the Wave Meter control and update the state of the progress bar accordingly once a WM_TIMER message is received. Run it and play a sound file using other applications; you can see it dancing. Note that the sound from MIDI or CD Audio is not reflected here because it passes through the MIXERLINE_COMPONENTTYPE_SRC_SYNTHESIZER or MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC source audio lines respectively. Download Program 3 - 76 Kb Program 4. Microphone Select <!-- Sample image - gif or jpg --> This program is equivalent to the "Microphone Select" check box of the Windows Volume Control for Recording. The Microphone Select control is one of the items of the MIXERCONTROL_CONTROLTYPE_MIXER or MIXERCONTROL_CONTROLTYPE_MUX controls of the MIXERLINE_COMPONENTTYPE_DST_WAVEIN destination audio line. It belongs to the list controls (MIXERCONTROL_CT_CLASS_LIST), which provide single-select or multiple-select states for complex audio lines. It uses the MIXERCONTROLDETAILS_BOOLEAN structure to retrieve and set control properties. Whenever the check box is clicked, CSelectDlg::amdSetMicSelectValue is called to set the Microphone Select value accordingly. The MM_MIXM_CONTROL_CHANGE message is received once the state of the Microphone Select control has changed. In this case, CSelectDlg::amdGetMicSelectValue is called to retrieve the current value of the Microphone Select control and update the state of the check box accordingly. Download Program 4 - 78 Kb Happy programming and good luck! History Date Posted: May 27, 1998 Date Last Updated: October 25, 2000 *HAVE A NICE DAY FOR YOU*
axsoft 版主發表：681 回覆：1056 積分：969 註冊：2002-03-13 發送簡訊給我	#3 引用回覆回覆發表時間：2003-06-26 18:19:15 IP:61.218.xxx.xxx 未訂閱 Platform SDK: Windows Multimedia http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/mmfunc_2ooj.asp Multimedia Functions The following functions are used with multimedia. acmDriverAdd acmDriverClose acmDriverDetails acmDriverEnum acmDriverEnumCallback acmDriverID acmDriverMessage acmDriverOpen acmDriverPriority acmDriverProc acmDriverRemove acmFilterChoose acmFilterChooseHookProc acmFilterDetails acmFilterEnum acmFilterEnumCallback acmFilterTagDetails acmFilterTagEnum acmFilterTagEnumCallback acmFormatChoose acmFormatChooseHookProc acmFormatDetails acmFormatEnum acmFormatEnumCallback acmFormatSuggest acmFormatTagDetails acmFormatTagEnum acmFormatTagEnumCallback acmGetVersion acmMetrics acmStreamClose acmStreamConvert acmStreamConvertCallback acmStreamMessage acmStreamOpen acmStreamPrepareHeader acmStreamReset acmStreamSize acmStreamUnprepareHeader auxGetDevCaps auxGetNumDevs auxGetVolume auxOutMessage auxSetVolume AVIBuildFilter AVIClearClipboard AVIFileAddRef AVIFileCreateStream AVIFileEndRecord AVIFileExit AVIFileGetStream AVIFileInfo AVIFileInit AVIFileOpen AVIFileReadData AVIFileRelease AVIFileWriteData AVIGetFromClipboard AVIMakeCompressedStream AVIMakeFileFromStreams AVIMakeStreamFromClipboard AVIPutFileOnClipboard AVISave AVISaveOptions AVISaveOptionsFree AVISaveV AVIStreamAddRef AVIStreamBeginStreaming AVIStreamCreate AVIStreamEndStreaming AVIStreamFindSample AVIStreamGetFrame AVIStreamGetFrameClose AVIStreamGetFrameOpen AVIStreamInfo AVIStreamLength AVIStreamOpenFromFile AVIStreamRead AVIStreamReadData AVIStreamReadFormat AVIStreamReleaseAVIStreamSampleToTime AVIStreamSetFormat AVIStreamStart AVIStreamTimeToSample AVIStreamWrite AVIStreamWriteData capControlCallback capCreateCaptureWindow capErrorCallback capGetDriverDescription capStatusCallback capVideoStreamCallback capWaveStreamCallback capYieldCallback CreateEditableStream DllGetClassObject DrawDibBegin DrawDibChangePalette DrawDibClose DrawDibDraw DrawDibEnd DrawDibGetBuffer DrawDibGetPalette DrawDibOpen DrawDibProfileDisplay DrawDibRealize DrawDibSetPalette DrawDibStart DrawDibStop DrawDibTime EditStreamClone EditStreamCopy EditStreamCut EditStreamPaste EditStreamSetInfo EditStreamSetName GetOpenFileNamePreview GetSaveFileNamePreview ICClose ICCompress ICCompressorChoose ICCompressorFree ICDecompress ICDecompressEx ICDecompressExBegin ICDecompressExQuery ICDraw ICDrawBegin ICDrawSuggestFormat ICGetDisplayFormat ICGetInfo ICImageCompress ICImageDecompress ICInfo ICInstall ICLocate ICOpen ICOpenFunction ICRemove ICSendMessage ICSeqCompressFrame ICSeqCompressFrameEnd ICSeqCompressFrameStart ICSetStatusProc IOProc joyConfigChanged joyGetDevCaps joyGetNumDevs joyGetPos joyGetPosEx joyGetThreshold joyReleaseCapture joySetCapture joySetThreshold mciExecute mciGetCreatorTask mciGetDeviceID mciGetDeviceIDFromElementID mciGetErrorString mciGetYieldProc mciSendCommand mciSendString mciSetYieldProc MCIWndCreate MCIWndRegisterClass midiConnect midiDisconnect midiInAddBuffer midiInClose midiInGetDevCaps midiInGetErrorText midiInGetID midiInGetNumDevs midiInMessage midiInOpen midiInPrepareHeader midiInProc midiInReset midiInStart midiInStop midiInUnprepareHeader midiOutCacheDrumPatches midiOutCachePatches midiOutClose midiOutGetDevCaps midiOutGetErrorText midiOutGetID midiOutGetNumDevs midiOutGetVolume midiOutLongMsg midiOutMessage midiOutOpen midiOutPrepareHeader MidiOutProc midiOutReset midiOutSetVolume midiOutShortMsg midiOutUnprepareHeader midiStreamClose midiStreamOpen midiStreamOut midiStreamPause midiStreamPosition midiStreamProperty midiStreamRestart midiStreamStop mixerClose mixerGetControlDetails mixerGetDevCaps mixerGetID mixerGetLineControls mixerGetLineInfo mixerGetNumDevs mixerMessage mixerOpen mixerSetControlDetails mmioAdvance mmioAscend mmioClose mmioCreateChunk mmioDescend mmioFlush mmioGetInfo mmioInstallIOProc mmioOpen MMIOProc mmioRead mmioRename mmioSeek mmioSendMessage mmioSetBuffer mmioSetInfo mmioStringToFOURCC mmioWrite MyStatusProc PlaySound sndPlaySound StretchDIB timeBeginPeriod timeEndPeriod timeGetDevCaps timeGetSystemTime timeGetTime timeKillEvent TimeProc timeSetEvent waveInAddBuffer waveInClose waveInGetDevCaps waveInGetErrorText waveInGetID waveInGetNumDevs waveInGetPosition waveInMessage waveInOpen waveInPrepareHeader waveInProc waveInReset waveInStart waveInStop waveInUnprepareHeader waveOutBreakLoop waveOutClose waveOutGetDevCaps waveOutGetErrorText waveOutGetID waveOutGetNumDevs waveOutGetPitch waveOutGetPlaybackRate waveOutGetPosition waveOutGetVolume waveOutMessage waveOutOpen waveOutPause waveOutPrepareHeader waveOutProc waveOutReset waveOutRestart waveOutSetPitch waveOutSetPlaybackRate waveOutSetVolume waveOutUnprepareHeader waveOutWrite *HAVE A NICE DAY FOR YOU* 發表人 - axsoft 於 2003/06/26 18:24:11
newken 一般會員發表：26 回覆：52 積分：15 註冊：2003-03-26 發送簡訊給我	#4 引用回覆回覆發表時間：2003-07-14 13:08:43 IP:163.28.xxx.xxx 未訂閱 axsfot大哥你好：像以上這些說明最主要是wave檔的IO部份，那如果我把wave檔存進一個buffer，然後要去做dsp的動作，譬如做convolution、fir filter這些處理，那我該如何進行下一步.................... 謝謝

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