WinAPI: waveOutGetDevCaps - 查询输出设备的性能
2008-02-20 19:07
435 查看
//声明: waveOutGetDevCaps( uDeviceID: UINT; {输出设备ID} lpCaps: PWaveOutCaps; {TWaveOutCaps 结构的指针, 用于接受设备信息} uSize: UINT): MMRESULT; {TWaveOutCaps 结构大小} ): MMRESULT; {成功返回 0; 可能的错误值见下:} MMSYSERR_BADDEVICEID = 2; {设备ID超界} MMSYSERR_NODRIVER = 6; {没有安装驱动程序} //TWaveOutCaps 是 tagWAVEOUTCAPSA 结构的重定义: tagWAVEOUTCAPSA = record wMid: Word; {制造商ID} wPid: Word; {产品ID} vDriverVersion: MMVERSION; {版本号; 高字节是主版本号, 低字节是次版本号} szPname: array[0..MAXPNAMELEN-1] of AnsiChar; {产品名称} dwFormats: DWORD; {支持的格式} wChannels: Word; {单声道(1)还是立体声(2)} dwSupport: DWORD; {其他功能} end; //dwFormats: WAVE_INVALIDFORMAT = $00000000; {invalid format} WAVE_FORMAT_1M08 = $00000001; {11.025 kHz, Mono, 8-bit } WAVE_FORMAT_1S08 = $00000002; {11.025 kHz, Stereo, 8-bit } WAVE_FORMAT_1M16 = $00000004; {11.025 kHz, Mono, 16-bit} WAVE_FORMAT_1S16 = $00000008; {11.025 kHz, Stereo, 16-bit} WAVE_FORMAT_2M08 = $00000010; {22.05 kHz, Mono, 8-bit } WAVE_FORMAT_2S08 = $00000020; {22.05 kHz, Stereo, 8-bit } WAVE_FORMAT_2M16 = $00000040; {22.05 kHz, Mono, 16-bit} WAVE_FORMAT_2S16 = $00000080; {22.05 kHz, Stereo, 16-bit} WAVE_FORMAT_4M08 = $00000100; {44.1 kHz, Mono, 8-bit } WAVE_FORMAT_4S08 = $00000200; {44.1 kHz, Stereo, 8-bit } WAVE_FORMAT_4M16 = $00000400; {44.1 kHz, Mono, 16-bit} WAVE_FORMAT_4S16 = $00000800; {44.1 kHz, Stereo, 16-bit} //dwSupport: WAVECAPS_PITCH = $0001; {支持音调控制} WAVECAPS_PLAYBACKRATE = $0002; {支持播放速度控制} WAVECAPS_VOLUME = $0004; {支持音量控制} WAVECAPS_LRVOLUME = $0008; {支持左右声道音量控制} WAVECAPS_SYNC = $0010; {} WAVECAPS_SAMPLEACCURATE = $0020; {} WAVECAPS_DIRECTSOUND = $0040; {} //举例:
相关文章推荐
- waveOutGetDevCaps - 查询输出设备的性能
- WinAPI: waveOutOpen - 打开波形输出设备
- WinAPI: waveOutWrite - 向输出设备发送一个数据块
- WinAPI: waveOutGetNumDevs - 获取波形输出设备的数目
- WinAPI: midiInGetDevCaps - 查询输入设备性能
- WinAPI: waveOutGetPitch - 获取输出设备当前的音调设置(音高的倍数值)
- WinAPI: midiOutGetDevCaps - 查询输出设备性能
- WinAPI: waveInGetDevCaps - 查询输入设备的性能
- WinAPI: waveOutGetPlaybackRate - 获取输出设备当前的播放速度设置(默认速度值的倍数)
- WinAPI: waveOutGetPosition - 获取输出设备当前的播放位置
- WinAPI: waveOutSetPitch - 设置输出设备的音调设置(音高的倍数值)
- WinAPI: waveOutGetPlaybackRate - 设置输出设备的播放速度(默认速度值的倍数)
- WinAPI: waveOutGetID - 获取输出设备 ID
- WinAPI: waveOutGetVolume - 获取输出设备当前的音量设置
- WinAPI: waveOutClose - 关闭设备
- WinAPI: waveOutGetVolume - 获取输出设备当前的音量设置
- WinAPI: waveOutMessage - 向波形输出设备发送一条消息
- WinAPI: waveInAddBuffer - 向波形输入设备发送一个输入缓冲区
- WinAPI: waveInGetPosition - 获取当前输入设备的输入位置
- WinAPI: midiOutReset - 重置输出设备