c# 使用waveOutOpen和waveOutwrite

[l2539641]

MMRESULT waveInOpen(
LPHWAVEIN phwi, //输入设备句柄
UINT uDeviceID, //输入设备ID
LPWAVEFORMATEX pwfx, //录音格式指针
DWORD dwCallback, //处理MM_WIM_***消息的回调函数或窗口句柄，线程ID
DWORD dwCallbackInstance,
DWORD fdwOpen //处理消息方式的符号位
);

MMRESULT waveOutWrite(
HWAVEOUT hwo,
LPWAVEHDR pwh,
UINT cbwh
);

用c#应该怎么写呢，在网上都没找到用c#相关的例子，可否指点一下参数在C#里的具体写法，谢谢

[ojekleen]

[DllImport("winmm.dll")]
MMRESULT waveInOpen(
LPHWAVEIN phwi, //输入设备句柄
UINT uDeviceID, //输入设备ID
LPWAVEFORMATEX pwfx, //录音格式指针
DWORD dwCallback, //处理MM_WIM_***消息的回调函数或窗口句柄，线程ID
DWORD dwCallbackInstance,
DWORD fdwOpen //处理消息方式的符号位
);

[zjhphc]

[DllImport(mmdll)]
public static extern int waveInOpen(out IntPtr phwi, int uDeviceID, WaveFormat lpFormat, WaveDelegate dwCallback, int dwInstance, int dwFlags);

[zjhphc]

private const string mmdll = "winmm.dll";

[wanghui0380]

http://www.codeproject.com/cs/media/cswavrec.asp?df=100&forumid=16677&exp=0&select=1107344

实际上，我个人建议你给你的vs装一个Pinvoke.net插件，通过这个插件，常用的C#下使用的api申明都可以直接找到

[zlkingdom]

在用DllImport声明的时候记得要把函数的参数类型转换成C#中的类型就可以了

[baihe_591]

		// WaveOut calls
		[DllImport(mmdll)]
		public static extern int waveOutGetNumDevs();
        [DllImport(mmdll)]
        public static extern int waveOutGetDevCaps(int hwo, ref WAVEOUTCAPS lpCaps, int uSize);
		[DllImport(mmdll)]
		public static extern int waveOutPrepareHeader(IntPtr hWaveOut, ref WaveHdr lpWaveOutHdr, int uSize);
		[DllImport(mmdll)]
		public static extern int waveOutUnprepareHeader(IntPtr hWaveOut, ref WaveHdr lpWaveOutHdr, int uSize);
		[DllImport(mmdll)]
		public static extern int waveOutWrite(IntPtr hWaveOut, ref WaveHdr lpWaveOutHdr, int uSize);
		[DllImport(mmdll)]
		public static extern int waveOutOpen(out IntPtr hWaveOut, int uDeviceID, WaveFormat lpFormat, WaveDelegate dwCallback, int dwInstance, int dwFlags);
		[DllImport(mmdll)]
		public static extern int waveOutReset(IntPtr hWaveOut);
		[DllImport(mmdll)]
		public static extern int waveOutClose(IntPtr hWaveOut);
		[DllImport(mmdll)]
		public static extern int waveOutPause(IntPtr hWaveOut);
		[DllImport(mmdll)]
		public static extern int waveOutRestart(IntPtr hWaveOut);
		[DllImport(mmdll)]
		//public static extern int waveOutGetPosition(IntPtr hWaveOut, out int lpInfo, int uSize);
        public static extern int waveOutGetPosition(IntPtr hWaveOut, out int time, int uSize);
		[DllImport(mmdll)]
		public static extern int waveOutSetVolume(IntPtr  hWaveOut, System .UInt32  dwVolume);
		[DllImport(mmdll)]
		public static extern int waveOutGetVolume(IntPtr  hWaveOut, out System .UInt32  dwVolume);

		// WaveIn calls
		[DllImport(mmdll)]
		public static extern int waveInGetNumDevs();
		[DllImport(mmdll)]
		public static extern int waveInAddBuffer(IntPtr hwi, ref WaveHdr pwh, int cbwh);
		[DllImport(mmdll)]
		public static extern int waveInClose(IntPtr hwi);
		[DllImport(mmdll)]
		public static extern int waveInOpen(out IntPtr phwi, int uDeviceID, WaveFormat lpFormat, WaveDelegate dwCallback, int dwInstance, int dwFlags);
		[DllImport(mmdll)]
		public static extern int waveInPrepareHeader(IntPtr hWaveIn, ref WaveHdr lpWaveInHdr, int uSize);
		[DllImport(mmdll)]
		public static extern int waveInUnprepareHeader(IntPtr hWaveIn, ref WaveHdr lpWaveInHdr, int uSize);
		[DllImport(mmdll)]
		public static extern int waveInReset(IntPtr hwi);
		[DllImport(mmdll)]
		public static extern int waveInStart(IntPtr hwi);
		[DllImport(mmdll)]
		public static extern int waveInStop(IntPtr hwi);
        [DllImport(mmdll)]
        public static extern int waveInGetDevCaps(int hwo,ref WAVEINCAPS lpCaps, int uSize);

网上就有现成的例子

[baihe_591]

http://www.codeproject.com/KB/audio-video/cswavrec.aspx

[baihe_591]

wave API函数的引用很复杂,我把它封装成一个类,如果你需要的话,可以跟我联系.

[wanglovec]

http://www.codeproject.com/KB/audio-video/cswavrec.aspx
》》这个东东有问题吧。 播放音频的时候 他把正在播放的数据 输出出来了 而不是 留一个接口 供外界调用输入播放的数据