static WavHelper()
{
//默认加载插件
LoadPlugins(NativeMethods.DllDir);
//默认初始化
int device = 0;
BASS_DEVICEINFO_INTERNAL info = new BASS_DEVICEINFO_INTERNAL();
for (int i = 0; ; i++)
{
if (!GetDeviceInfo(i, ref info))
{
break;
}
if (info.driver != IntPtr.Zero &&
info.flags == (BASSDeviceInfo.BASS_DEVICE_DEFAULT | BASSDeviceInfo.BASS_DEVICE_ENABLED | BASSDeviceInfo.BASS_DEVICE_TYPE_SPEAKERS))
{
device = -1;
break;
}
}
Init(device, 48000, BASSInit.BASS_DEVICE_DEFAULT);
}
/// <summary>
/// 获取设备信息
/// </summary>
/// <param name="device"></param>
/// <param name="info"></param>
/// <returns></returns>
public static bool BASS_GetDeviceInfo(int device, ref BASS_DEVICEINFO_INTERNAL info)
{
if (Environment.Is64BitProcess)
{
return(BassX64.BASS_GetDeviceInfo(device, ref info));
}
else
{
return(BassX86.BASS_GetDeviceInfo(device, ref info));
}
}
/// <summary>
/// 重写OnCreateControl
/// </summary>
protected override void OnCreateControl()
{
base.OnCreateControl();
try
{
//加载默认目录存放的bass插件
if (WavePlayer._instanceCount == 1)
{
Bass.BASS_PluginLoad();
}
//创建默认双缓冲
this.CreateBufferedGraphics();
//初始化
if (this.DesignMode)
{
return;
}
//bass.dll版本验证
if (this.IsVersionValidate && !Bass.BASS_VersionValidate())
{
MessageBox.Show("bass.dll版本不匹配,可能会导致程序运行异常", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
//查找是否有声音驱动
int iDevice = 0;
BASS_DEVICEINFO_INTERNAL info = new BASS_DEVICEINFO_INTERNAL();
for (int i = 0; Bass.BASS_GetDeviceInfo(i, ref info); i++)
{
if (info.driver != IntPtr.Zero && info.flags == (BASSDeviceInfo.BASS_DEVICE_DEFAULT | BASSDeviceInfo.BASS_DEVICE_ENABLED | BASSDeviceInfo.BASS_DEVICE_TYPE_SPEAKERS))
{
iDevice = -1;
break;
}
}
bool ret = Bass.BASS_Init(iDevice, this._freq, BASSInit.BASS_DEVICE_CPSPEAKERS, this.Handle, IntPtr.Zero);
if (!ret)
{
this.OnRaiseLog(new Exception("初始化失败" + BassErrorCode.GetErrorInfo()));
}
}
catch (Exception ex)
{
this.OnRaiseLog(ex);
}
}
/// <summary>
/// 获取设备数
/// </summary>
/// <returns>设备数</returns>
public static int GetDeviceCount()
{
int deviceCount = 0;
BASS_DEVICEINFO_INTERNAL info = new BASS_DEVICEINFO_INTERNAL();
for (int i = 0; ; i++)
{
if (WavHelper.GetDeviceInfo(i, ref info))
{
deviceCount++;
}
else
{
break;
}
}
return(deviceCount);
}
/// <summary>
/// Retrieves information on an output device
/// </summary>
/// <param name="device">The device to get the information of... 0 = first. </param>
/// <param name="info">Pointer to a structure to receive the information</param>
/// <returns>If successful, then TRUE is returned, else FALSE is returned. Use BASS_ErrorGetCode to get the error code</returns>
public static bool GetDeviceInfo(int device, ref BASS_DEVICEINFO_INTERNAL info)
{
return(NativeMethods.BASS_GetDeviceInfo(device, ref info));
}
public static extern bool BASS_GetDeviceInfo([In] int device, [In, Out] ref BASS_DEVICEINFO_INTERNAL info);
