protected override void FreeBASS()
{
this._waveInfo = null;
base.FreeBASS();
if (base.HandleValid())
{
WavHelper.BASS_ChannelRemoveSync(base._handle, this._playEndSyncHandle);
}
}
//private void PlayPositionChangedNotify(int handle, int channel, int data, IntPtr user)
//{
// WavLoger.OnRaiseLog(this, "PlayPositionChangedNotify");
//}
private void PlayEndNotify(int handle, int channel, int data, IntPtr user)
{
this._waveInfo = null;
var handler = this.PlayEnd;
if (handler != null)
{
handler(this, new PlayEndArgs(this._fileName));
}
}
/// <summary>
/// 播放状态改变通知
/// </summary>
protected override void OnPlayStatusChanged()
{
base.OnPlayStatusChanged();
var state = WavHelper.ChannelIsActive(base._handle);
if (state != BASSActive.BASS_ACTIVE_PAUSED &&
state != BASSActive.BASS_ACTIVE_PAUSED_DEVICE &&
state != BASSActive.BASS_ACTIVE_PLAYING)
{
this._waveInfo = null;
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="waveInfo">音频信息</param>
/// <param name="bufferCapcity">缓存容量,小于等于0自动计算</param>
public StreamSoundPlayer(WaveInfo waveInfo, int bufferCapcity = -1)
: base(SoundPlayerType.Stream)
{
this._waveInfo = waveInfo;
int bitByteCount;
BASSFlag flags;
switch (waveInfo.SampleBit)
{
case SampleType.Sample8Bit:
flags = BASSFlag.BASS_DEFAULT | BASSFlag.BASS_SAMPLE_8BITS;
bitByteCount = 1;
break;
case SampleType.Sample16Bit:
flags = BASSFlag.BASS_DEFAULT;
bitByteCount = 2;
break;
case SampleType.Sample32Bit:
flags = BASSFlag.BASS_DEFAULT | BASSFlag.BASS_SAMPLE_FLOAT;
bitByteCount = 4;
break;
default:
throw new NotImplementedException($"未实现的采样类型:{waveInfo.SampleBit.ToString()}");
}
if (bufferCapcity == -1)
{
bufferCapcity = waveInfo.SampleRate * waveInfo.ChannelCount * bitByteCount * 10;//默认缓存10秒数据
}
if (bufferCapcity > 0)
{
this._buffer = new byte[bufferCapcity];
}
this._streamProc = new STREAMPROC(this.StreamProcCallback);
base._handle = WavHelper.StreamCreate(waveInfo.SampleRate, waveInfo.ChannelCount, flags, this._streamProc, IntPtr.Zero);
//base._device = WavHelper.ChannelGetDevice(base._handle);
}