//设置播放源文件
public void SelectFile(string fileName)
{
this._fileName = fileName;
if (_stream != 0)
{
_updateTimer.Stop();
Bass.BASS_StreamFree(_stream);
}
// create the stream
_stream = Bass.BASS_StreamCreateFile(_fileName, 0, 0, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_PRESCAN);
// set dsp
_myDSPAddr = new DSPPROC(MyDSPGainUnsafe);
Bass.BASS_ChannelSetDSP(_stream, _myDSPAddr, IntPtr.Zero, 2);
//if (_stream != 0)
//{
// // get some channel info
// //info = new BASS_CHANNELINFO();
// //Bass.BASS_ChannelGetInfo(_stream, info);
// // get the tags...
// //tagInfo = new TAG_INFO(_fileName);
//}
GetWaveForm();
}
private void btnPlay_Click(object sender, EventArgs e)
{
updateTimer.Stop();
Bass.BASS_StreamFree(stream);
if (filename != string.Empty)
{
stream = Bass.BASS_StreamCreateFile(filename, 0, 0, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_PRESCAN);
if (stream != 0)
{
mslength = (int)Bass.BASS_ChannelSeconds2Bytes(stream, 0.03);
deviceLatencyBytes = (int)Bass.BASS_ChannelSeconds2Bytes(stream, deviceLatencyMS / 1000.0);
myDSPAddr = new DSPPROC(MyDSPGain);
Bass.BASS_ChannelSetDSP(stream, myDSPAddr, IntPtr.Zero, 2);
if (WF2 != null && WF2.IsRendered)
{
WF2.SyncPlayback(stream);
long cuein = WF2.GetMarker("CUE");
long cueout = WF2.GetMarker("END");
int cueinFrame = WF2.Position2Frames(cuein);
int cueoutFrame = WF2.Position2Frames(cueout);
if (cuein >= 0)
{
Bass.BASS_ChannelSetPosition(stream, cuein);
}
if (cueout >= 0)
{
Bass.BASS_ChannelRemoveSync(stream, syncer);
syncer = Bass.BASS_ChannelSetSync(stream, BASSSync.BASS_SYNC_POS, cueout, sync, IntPtr.Zero);
}
}
}
if (stream != 0 && Bass.BASS_ChannelPlay(stream, false))
{
textBox1.Text = "";
updateTimer.Start();
BASS_CHANNELINFO info = new BASS_CHANNELINFO();
Bass.BASS_ChannelGetInfo(stream, info);
textBox1.Text += "Info: " + info.ToString() + Environment.NewLine;
TAG_INFO tagInfo = new TAG_INFO();
if (BassTags.BASS_TAG_GetFromFile(stream, tagInfo))
{
textBoxAlbum.Text = tagInfo.album;
textBoxArtist.Text = tagInfo.artist;
textBoxTitle.Text = tagInfo.title;
textBoxComment.Text = tagInfo.comment;
textBoxGenre.Text = tagInfo.genre;
textBoxYear.Text = tagInfo.year;
textBoxTrack.Text = tagInfo.track;
}
btnStop.Enabled = true;
btnPlay.Enabled = false;
}
}
}