/// <summary>
/// Attach a stream to the Mixer
/// </summary>
/// <returns></returns>
public bool AttachStream()
{
try
{
Bass.BASS_ChannelLock(_mixerHandle, true);
RegisterStreamFreedEvent(_inputStream);
bool result = BassMix.BASS_Mixer_StreamAddChannel(_mixerHandle, _inputStream.Handle,
BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_BUFFER |
BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_DOWNMIX |
BASSFlag.BASS_STREAM_AUTOFREE
);
if (!result)
{
throw new BassLibraryException("BASS_Mixer_StreamAddChannel");
}
return(true);
}
finally
{
Bass.BASS_ChannelLock(_mixerHandle, false);
}
}
private void buttonAddFile_Click(object sender, EventArgs e)
{
if (DialogResult.OK == openFileDialog.ShowDialog(this))
{
if (File.Exists(openFileDialog.FileName))
{
lock (listBoxPlaylist)
{
Track track = new Track(openFileDialog.FileName);
listBoxPlaylist.Items.Add(track);
// in the demo we already add each new track to the mixer
// this is in real life not the best place to do so (especially with larger playlists)
// but for the demo it is okay ;-)
// add the new track to the mixer (in PAUSED mode!)
BassMix.BASS_Mixer_StreamAddChannel(_mixer, track.Channel, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_DOWNMIX | BASSFlag.BASS_STREAM_AUTOFREE);
// an BASS_SYNC_END is used to trigger the next track in the playlist (if no POS sync was set)
track.TrackSync = new SYNCPROC(OnTrackSync);
BassMix.BASS_Mixer_ChannelSetSync(track.Channel, BASSSync.BASS_SYNC_END, 0L, track.TrackSync, new IntPtr(0));
}
if (_currentTrack == null)
{
PlayNextTrack();
}
}
}
}
/// <summary>
/// Recode the file
/// </summary>
/// <param name = "fileName">Initial file</param>
/// <param name = "outFileName">Target file</param>
/// <param name = "targetSampleRate">Target sample rate</param>
public void RecodeTheFile(string fileName, string outFileName, int targetSampleRate)
{
int stream = Un4seen.Bass.Bass.BASS_StreamCreateFile(fileName, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_MONO | BASSFlag.BASS_SAMPLE_FLOAT);
TAG_INFO tags = new TAG_INFO();
BassTags.BASS_TAG_GetFromFile(stream, tags);
int mixerStream = BassMix.BASS_Mixer_StreamCreate(targetSampleRate, 1, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_MONO | BASSFlag.BASS_SAMPLE_FLOAT);
if (BassMix.BASS_Mixer_StreamAddChannel(mixerStream, stream, BASSFlag.BASS_MIXER_FILTER))
{
WaveWriter waveWriter = new WaveWriter(outFileName, mixerStream, true);
const int length = 5512 * 10 * 4;
float[] buffer = new float[length];
while (true)
{
int bytesRead = Un4seen.Bass.Bass.BASS_ChannelGetData(mixerStream, buffer, length);
if (bytesRead == 0)
{
break;
}
waveWriter.Write(buffer, bytesRead);
}
waveWriter.Close();
}
else
{
throw new Exception(Un4seen.Bass.Bass.BASS_ErrorGetCode().ToString());
}
}
/// <summary>
/// Adds to the mixer channel, and sets the sync points.
/// </summary>
/// <param name="sample">The sample to sync.</param>
private void AddSampleToMixer(Sample sample)
{
if (sample == null)
{
return;
}
Debug.Print("Add sample to mixer " + sample.Description);
// load audio data if not loaded
if (sample.Channel == int.MinValue)
{
LoadSampleAudioData(sample);
}
//if (sample != this.PreviousSample && sample != this.CurrentSample)
//{
// add the new sample to the mixer (in paused mode)
//BassMix.BASS_Mixer_StreamAddChannel(_mixerChannel, sample.Channel, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_DOWNMIX | BASSFlag.BASS_STREAM_AUTOFREE);
BassMix.BASS_Mixer_StreamAddChannel(_sampleMixerChannel, sample.Channel, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_DOWNMIX);
//// set sample sync event
//sample.SampleSync = new SYNCPROC(OnSampleSync);
//// set replay gain
//BassHelper.SetSampleReplayGain(sample.Channel, sample.Gain);
//}
}
public void start(double delay)
{
latency = (float)delay / 10;
var str = (inlist.Items[inlist.SelectedIndex] as string);
var array = str.Split(' ');
sourceIndex = Convert.ToInt32(array[0]);
str = (outlist.Items[outlist.SelectedIndex] as string);
array = str.Split(' ');
outIndex = Convert.ToInt32(array[0]);
Console.WriteLine(sourceIndex + " " + outIndex);
Console.WriteLine(delay);
stop();
Bass.BASS_Init(0, 44100, BASSInit.BASS_DEVICE_DEFAULT, IntPtr.Zero); // "No Sound" device init
// Garbage collector can't track the reference BassWasapi holds,
// so we're adding a reference here to prevent garbage collection
inProc = sourceWasapiProc;
outProc = outWasapiProc;
BassWasapi.BASS_WASAPI_Init(sourceIndex, 44100, 0, 0, 1, 0, inProc, IntPtr.Zero);
BassWasapi.BASS_WASAPI_Init(outIndex, 44100, 0, 0, 4 * latency, 1 * latency, outProc, IntPtr.Zero);
BassWasapi.BASS_WASAPI_SetDevice(outIndex);
pushstr = Bass.BASS_StreamCreatePush(44100, 2, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT, IntPtr.Zero);
outstr = BassMix.BASS_Mixer_StreamCreate(44100, 2, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT);
BassMix.BASS_Mixer_StreamAddChannel(outstr, pushstr, 0);
BassWasapi.BASS_WASAPI_SetDevice(sourceIndex);
BassWasapi.BASS_WASAPI_Start();
BassWasapi.BASS_WASAPI_SetDevice(outIndex);
BassWasapi.BASS_WASAPI_Start();
}
public void LoadSample(Sample sample)
{
if (sample.FileName == null)
{
return;
}
if (sample.FileName.EndsWith(".wma"))
{
sample.Channel = BassWma.BASS_WMA_StreamCreateFile(sample.FileName, 0L, 0L,
BASSFlag.BASS_STREAM_DECODE |
BASSFlag.BASS_SAMPLE_FLOAT);
}
else
{
sample.Channel = Bass.BASS_StreamCreateFile(sample.FileName, 0L, 0L,
BASSFlag.BASS_STREAM_DECODE |
BASSFlag.BASS_SAMPLE_FLOAT);
}
BassMix.BASS_Mixer_StreamAddChannel(SoundEffectMixerChannel, sample.Channel,
BASSFlag.BASS_MIXER_PAUSE);
Bass.BASS_ChannelSetSync(sample.Channel, BASSSync.BASS_SYNC_END, 0, endSync, IntPtr.Zero);
//sample.Weight = 1;
if (CurrentSample == null)
{
CurrentSample = sample;
}
SetLoop();
}
/// <summary>
/// Attach a stream to the Mixer
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool AttachStream(MusicStream stream)
{
Bass.BASS_ChannelLock(_mixer, true);
// Set SynyPos at end of stream
SetSyncPos(stream, 0.0);
bool result = BassMix.BASS_Mixer_StreamAddChannel(_mixer, stream.BassStream,
BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_BUFFER |
BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_DOWNMIX |
BASSFlag.BASS_STREAM_AUTOFREE);
if (!result)
{
Log.Error("BASS: Error attaching stream to mixer. {0}", Bass.BASS_ErrorGetCode());
}
Bass.BASS_ChannelLock(_mixer, false);
if (result && _mixingMatrix != null)
{
Log.Debug("BASS: Setting mixing matrix...");
result = BassMix.BASS_Mixer_ChannelSetMatrix(stream.BassStream, _mixingMatrix);
if (!result)
{
Log.Error("BASS: Error attaching Mixing Matrix. {0}", Bass.BASS_ErrorGetCode());
}
}
return(result);
}
public void Resample_8To8() //broken only on Linux?
{
//-- 1. Create a raw sine sample which shall be 44100 Hz and 16 Bit
int sampleLength = 500;
byte[] buffer = new byte[sampleLength];
for (int i = 0; i < sampleLength; i++)
{
buffer [i] = (byte)(128 + 120.0f * Math.Sin(((float)i / (float)sampleLength) * (Math.PI * 2.0f)));
}
using (BinaryWriter writerRaw = new BinaryWriter(File.Open("test2_in_sine_44100_8.raw", FileMode.Create))) {
for (uint i = 0; i < sampleLength; i++)
{
writerRaw.Write(buffer [i]);
}
}
GCHandle _hGCFile;
// now create a pinned handle, so that the Garbage Collector will not move this object
_hGCFile = GCHandle.Alloc(buffer, GCHandleType.Pinned);
int handle = Bass.BASS_StreamCreate(44100, 1, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_8BITS, BASSStreamProc.STREAMPROC_PUSH);
int ret = Bass.BASS_StreamPutData(handle, _hGCFile.AddrOfPinnedObject(), buffer.Length * sizeof(byte) | (int)BASSStreamProc.BASS_STREAMPROC_END);
Assert.AreEqual(buffer.Length * sizeof(byte), ret);
//-- 2. Mix it
int mixer = BassMix.BASS_Mixer_StreamCreate(11025, 1, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_8BITS);
// add channel to mixer
bool isMixerGood = BassMix.BASS_Mixer_StreamAddChannel(mixer, handle, BASSFlag.BASS_MIXER_NORAMPIN);
Assert.AreEqual(true, isMixerGood);
//-- 3. grab Stream and compare
byte[] buffer2 = new byte[1000];
// total data written to the new byte[] buffer
int totalDataWritten = Bass.BASS_ChannelGetData(mixer, buffer2, (int)1000);
Console.WriteLine("totalDataWritten " + totalDataWritten);
using (BinaryWriter writerRaw = new BinaryWriter(File.Open("test2_out_sine_11025_8.raw", FileMode.Create))) {
for (uint i = 0; i < totalDataWritten; i++)
{
writerRaw.Write(buffer2 [i]);
}
}
string hashGen = MD5Utils.GenerateMd5Hash(buffer2);
Bass.BASS_StreamFree(handle);
Bass.BASS_StreamFree(mixer);
Assert.AreEqual("50bce9c536e98667534747f0a5f06ebd", hashGen);
}
public void AttachChannel(ChannelInfo info)
{
if (info is InputChannelInfo)
{
InputChannelInfo iinfo = (InputChannelInfo)info;
if (this.BassHandle.HasValue)
{
BassMix.BASS_Mixer_StreamAddChannel(this.BassHandle.Value, iinfo.Handler.OutputChannel, BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_BUFFER);
}
}
else
{
if (!info.BassHandle.HasValue)
{
//Initialize to no sound as it's decoding anyway
info.Initialize(0);
}
this.streams.Add(info);
if (this.BassHandle.HasValue)
{
BassMix.BASS_Mixer_StreamAddChannel(this.BassHandle.Value, info.BassHandle.Value, BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_BUFFER);
}
//Simple trick to refresh play status now it's attached
}
info.Play = info.Play;
}
public void StreamAddChannel(int channel, SYNCPROC trackSync)
{
//BassMix.BASS_Mixer_StreamAddChannel(Player.Mixer, channel, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_STREAM_AUTOFREE | BASSFlag.BASS_MIXER_DOWNMIX);
BassMix.BASS_Mixer_StreamAddChannel(Player.Mixer, channel, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_DOWNMIX | BASSFlag.BASS_STREAM_AUTOFREE);
// an BASS_SYNC_END is used to trigger the next track in the playlist (if no POS sync was set)
BassMix.BASS_Mixer_ChannelSetSync(channel, BASSSync.BASS_SYNC_END, 0L, trackSync, new IntPtr(1));
}
void Scenes_ListChanged(object sender, ListChangedEventArgs e)
{
if (e.ListChangedType == ListChangedType.ItemAdded)
{
Scenes[e.NewIndex].StoppingOthers += new EventHandler(Module_StoppingOthers);
BassMix.BASS_Mixer_StreamAddChannel(ModuleMixerChannel, Scenes[e.NewIndex].SceneMixerChannel,
BASSFlag.BASS_DEFAULT);
}
}
void SoundEffects_ListChanged(object sender, ListChangedEventArgs e)
{
Stop(false);
if (e.ListChangedType == ListChangedType.ItemAdded)
{
BassMix.BASS_Mixer_StreamAddChannel(SceneMixerChannel, SoundEffects[e.NewIndex].SoundEffectMixerChannel,
BASSFlag.BASS_DEFAULT);
}
}
public bool AddMixerChannel(int source)
{
int mixer = this.StreamMixer;
this.StreamMixer = mixer;
this.StreamPlugged = source;
return(BassMix.BASS_Mixer_StreamAddChannel(mixer, source, BASSFlag.BASS_MIXER_NORAMPIN));
}
/// <summary>
/// Creates the visualization Bass stream.
/// </summary>
private void CreateVizStream()
{
BASSFlag streamFlags = BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT;
int handle = Bass.BASS_StreamCreate(
_inputStream.SampleRate,
_inputStream.Channels,
streamFlags,
_vizRawStreamWriteProcDelegate,
IntPtr.Zero);
if (handle == BassConstants.BassInvalidHandle)
{
throw new BassLibraryException("BASS_StreamCreate");
}
_vizRawStream = BassStream.Create(handle);
// Todo: apply AGC
streamFlags = BASSFlag.BASS_MIXER_NONSTOP | BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE;
handle = BassMix.BASS_Mixer_StreamCreate(_inputStream.SampleRate, 2, streamFlags);
if (handle == BassConstants.BassInvalidHandle)
{
throw new BassLibraryException("BASS_StreamCreate");
}
_vizStream = BassStream.Create(handle);
streamFlags = BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_DOWNMIX | BASSFlag.BASS_MIXER_MATRIX;
if (!BassMix.BASS_Mixer_StreamAddChannel(_vizStream.Handle, _vizRawStream.Handle, streamFlags))
{
throw new BassLibraryException("BASS_Mixer_StreamAddChannel");
}
// TODO Albert 2010-02-27: What is this?
if (_inputStream.Channels == 1)
{
float[,] mixMatrix = new float[2, 1];
mixMatrix[0, 0] = 1;
mixMatrix[1, 0] = 1;
if (!BassMix.BASS_Mixer_ChannelSetMatrix(_vizRawStream.Handle, mixMatrix))
{
throw new BassLibraryException("BASS_Mixer_ChannelSetMatrix");
}
}
}
public bool loadDeckB(string songName)
{
if (running())
{
if (!songName.Equals(string.Empty))
{
_songB = songName;
_deckB = Bass.BASS_StreamCreateFile(songName, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT);
_bRunning = false; // definitely not playing
bool b = BassMix.BASS_Mixer_StreamAddChannel(_mixer, _deckB, BASSFlag.BASS_DEFAULT);
BassMix.BASS_Mixer_ChannelPause(_deckB); // pause as soon as it loads
return(b);
}
}
return(false);
}
/// <summary>
/// Creates the channel.
/// </summary>
/// <param name="file">The file.</param>
/// <returns></returns>
public ITrack CreateChannel(string file)
{
var channelHandle = Bassh.BASS_StreamCreateFile(file, 0, 0, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE);
Bassh.BASS_ChannelSetAttribute(channelHandle, BASSAttribute.BASS_ATTRIB_SRC, 2);
Debug.WriteLine(Bassh.BASS_ChannelGetInfo(channelHandle));
if (0 == channelHandle)
{
throw new InvalidOperationException("Unable to create stream");
}
if (!BassMix.BASS_Mixer_StreamAddChannel(mixerHandle, channelHandle, BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_BUFFER | BASSFlag.BASS_MIXER_NORAMPIN))
{
Trace.WriteLine(Bassh.BASS_ErrorGetCode());
throw new InvalidOperationException("Unable to add channel to mixer.");
}
return(new BassTrack(channelHandle, mixerHandle, file));
}
public static int PlugChannelToMixer(int handle, int freq, int chans, int res)
{
BASSFlag bassFlag = BASSFlag.BASS_STREAM_DECODE;
if (res == 8)
{
bassFlag |= BASSFlag.BASS_SAMPLE_8BITS;
}
// this will be the final mixer output stream being played
int mixer = BassMix.BASS_Mixer_StreamCreate(freq, chans, bassFlag);
// add channel to mixer
bool isMixerGood = BassMix.BASS_Mixer_StreamAddChannel(mixer, handle, BASSFlag.BASS_MIXER_NORAMPIN);
return(mixer);
}
/// <summary>
/// Called when a stream has been created. This actually starts the playback of the stream.
/// </summary>
/// <param name="track">The track that is to be played.</param>
/// <param name="stream">The BASS.NET stream pointer to play.</param>
protected virtual void StreamCreated(IAudioItem track, int stream)
{
// Init mixer
if (_mixer == -1)
{
_mixer = BassMix.BASS_Mixer_StreamCreate(44100, 6, BASSFlag.BASS_MIXER_END);
// Set playback done callback on mixer
_channelEndCallback = new SYNCPROC(ChannelEnd);
Bass.BASS_ChannelSetSync(_mixer, BASSSync.BASS_SYNC_END | BASSSync.BASS_SYNC_MIXTIME, 0, _channelEndCallback, IntPtr.Zero);
}
// Load streamin mixer
bool ok = BassMix.BASS_Mixer_StreamAddChannel(_mixer, stream, BASSFlag.BASS_STREAM_AUTOFREE | BASSFlag.BASS_MIXER_MATRIX);
if (!ok)
{
Log(Bass.BASS_ErrorGetCode().ToString(), Logger.LogLevel.Error);
}
// Set matrix
SetMatrix(stream);
// Remove current channel from mixer
if (_currentStream != -1)
{
BassMix.BASS_Mixer_ChannelRemove(_currentStream);
Bass.BASS_StreamFree(_currentStream);
}
//
if (track is IWebcast)
{
SYNCPROC _mySync = new SYNCPROC(MetaSync);
Bass.BASS_ChannelSetSync(_currentStream, BASSSync.BASS_SYNC_META, 0, _mySync, IntPtr.Zero);
}
// Play it!
Bass.BASS_ChannelSetPosition(_mixer, 0);
Bass.BASS_Start();
Bass.BASS_ChannelPlay(_mixer, false);
// Set current stuff
_currentStream = stream;
}
public bool AddOutputSource(int channel, BASSFlag flags)
{
BASS_CHANNELINFO bass_CHANNELINFO = Bass.Bass.BASS_ChannelGetInfo(channel);
if (bass_CHANNELINFO == null)
{
return(false);
}
if (!bass_CHANNELINFO.IsDecodingChannel && bass_CHANNELINFO.ctype != BASSChannelType.BASS_CTYPE_RECORD)
{
return(false);
}
if (flags < BASSFlag.BASS_SPEAKER_FRONT)
{
flags |= BASSFlag.BASS_WV_STEREO;
}
return(BassMix.BASS_Mixer_StreamAddChannel(this._internalMixer, channel, flags));
}
public override void Load(string file)
{
// Dispose on every new load
Dispose(false);
ready = false;
// Create a stream channel from a file (use BASS_STREAM_PRESCAN for mp3?)
bassStream = Bass.BASS_StreamCreateFile(file, 0L, 0L, BASSFlag.BASS_STREAM_DECODE);
if (bassStream != 0)
{
var info = Bass.BASS_ChannelGetInfo(bassStream);
this.sourceBitDepth = info.Is8bit ? 8 : (info.Is32bit ? 32 : 16);
this.sourceSampleRate = info.freq;
this.sourceChannels = info.chans;
this.sampleRate = info.freq;
this.channels = info.chans;
duration = (int)Bass.BASS_ChannelBytes2Seconds(bassStream, Bass.BASS_ChannelGetLength(bassStream));
if (this.resample)
{
this.sampleRate = 11025;
this.channels = 1;
// Create resample stream.
bassMixer = BassMix.BASS_Mixer_StreamCreate(this.sampleRate, this.channels,
BASSFlag.BASS_MIXER_END | BASSFlag.BASS_STREAM_DECODE);
if (bassMixer == 0)
{
return;
}
BassMix.BASS_Mixer_StreamAddChannel(bassMixer, bassStream, 0);
}
ready = (!info.Is8bit && !info.Is32bit);
}
}
private void buttonPlaySource_Click(object sender, System.EventArgs e)
{
Bass.BASS_StreamFree(_streamA);
Bass.BASS_StreamFree(_streamB);
Bass.BASS_StreamFree(_mixerStream);
// mixer setup
// now we need some channels to plug them in...create two decoding sources
_streamA = Bass.BASS_StreamCreateFile(_fileName, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT);
_streamB = Bass.BASS_StreamCreateFile(_fileNameOutput, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT);
BASS_CHANNELINFO i = new BASS_CHANNELINFO();
Bass.BASS_ChannelGetInfo(_streamA, i);
// this will be the final mixer output stream being played
_mixerStream = BassMix.BASS_Mixer_StreamCreate(i.freq, 4, BASSFlag.BASS_DEFAULT);
// finally we plug them into the mixer (and upmix it to 4 channels - we assume the source to be stereo)
bool okA = BassMix.BASS_Mixer_StreamAddChannel(_mixerStream, _streamA, BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_STREAM_AUTOFREE);
bool okB = BassMix.BASS_Mixer_StreamAddChannel(_mixerStream, _streamB, BASSFlag.BASS_STREAM_AUTOFREE);
// a matrix for A!
float[,] matrixA = new float[4, 2] { // stereo to quad matrix
{ 1, 0 }, // left front out = left in
{ 0, 1 }, // right front out = right in
{ 1, 0 }, // left rear out = left in
{ 0, 1 } // right rear out = right in
};
// apply the matrix to stream A only
BassMix.BASS_Mixer_ChannelSetMatrix(_streamA, matrixA);
// just so show how to get it back...
float[,] matrixGet = new float[4, 2];
BassMix.BASS_Mixer_ChannelGetMatrix(_streamA, matrixGet);
// mute streamB at the beginning
this.trackBarCrossFader.Value = -100;
Bass.BASS_ChannelSetAttribute(_streamB, BASSAttribute.BASS_ATTRIB_VOL, 0f);
// and play it...
if (Bass.BASS_ChannelPlay(_mixerStream, false))
{
this.label1.Text = "Playing! Use the crossfader...";
}
}
public static void Play(string file, bool loadOnly)
{
Stop();
baseStreamHandle = Bass.BASS_StreamCreateFile(file, 0, 0, BASSFlag.BASS_STREAM_DECODE);
BASS_CHANNELINFO info = Bass.BASS_ChannelGetInfo(baseStreamHandle);
mixStreamHandle = BassMix.BASS_Mixer_StreamCreate(info.freq, info.chans, BASSFlag.BASS_STREAM_DECODE);
BassMix.BASS_Mixer_StreamAddChannel(mixStreamHandle, baseStreamHandle, BASSFlag.BASS_MIXER_MATRIX);
streamHandle = BassFx.BASS_FX_TempoCreate(mixStreamHandle, BASSFlag.BASS_FX_FREESOURCE);
Mono = mono;
Speed = speed;
if (!loadOnly)
{
Bass.BASS_ChannelPlay(streamHandle, false);
}
BASSError er = Bass.BASS_ErrorGetCode();
syncProc = new SYNCPROC(AudioEnded);
Bass.BASS_ChannelSetSync(streamHandle, BASSSync.BASS_SYNC_END, 0, syncProc, IntPtr.Zero);
Playing = !loadOnly;
FileLoaded = true;
}
/// <summary>
/// Create a mixer to be used as Output stream.
/// We currently need this in case of Up- or Downmixing
/// </summary>
private void CreateMixer(int channels)
{
_mixerHandle = BassMix.BASS_Mixer_StreamCreate(_inputStream.SampleRate, channels, MIXER_FLAGS);
if (_mixerHandle == BassConstants.BassInvalidHandle)
{
throw new BassLibraryException("BASS_Mixer_StreamCreate");
}
_mixerStream = BassStream.Create(_mixerHandle);
// Now Attach the Input Stream to the mixer
try
{
Bass.BASS_ChannelLock(_mixerHandle, true);
bool result = BassMix.BASS_Mixer_StreamAddChannel(_mixerHandle, _inputStream.Handle,
BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_BUFFER |
BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_DOWNMIX |
BASSFlag.BASS_STREAM_AUTOFREE
);
if (!result)
{
throw new BassLibraryException("BASS_UpDownMix_StreamAddChannel");
}
}
finally
{
Bass.BASS_ChannelLock(_mixerHandle, false);
}
if (_mixingMatrix != null)
{
bool result = BassMix.BASS_Mixer_ChannelSetMatrix(_inputStream.Handle, _mixingMatrix);
if (!result)
{
throw new BassLibraryException("BASS_UpDownMix_SetMixingMatrix");
}
}
}
public void Play_With_Buildup()
{
Stop();
if (InitBass(HZ))
{
Channel = BassMix.BASS_Mixer_StreamCreate(HZ, 2, BASSFlag.BASS_MIXER_END);
point_B = GCHandle.Alloc(build_mem, GCHandleType.Pinned);
point_L = GCHandle.Alloc(loop_mem, GCHandleType.Pinned);
Stream_B = Bass.BASS_StreamCreateFile(point_B.AddrOfPinnedObject(), 0, build_mem.LongLength, BASSFlag.BASS_STREAM_DECODE);
build_len = Bass.BASS_ChannelGetLength(Stream_B, BASSMode.BASS_POS_BYTES);
Stream_L = Bass.BASS_StreamCreateFile(point_L.AddrOfPinnedObject(), 0, loop_mem.LongLength, BASSFlag.BASS_STREAM_DECODE);
loop_len = Bass.BASS_ChannelGetLength(Stream_L);
BassMix.BASS_Mixer_StreamAddChannel(Channel, Stream_B, BASSFlag.BASS_DEFAULT);
BassMix.BASS_Mixer_StreamAddChannelEx(Channel, Stream_L, BASSFlag.BASS_MIXER_NORAMPIN, build_len, 0);
_loopSync = BassMix.BASS_Mixer_ChannelSetSync(Stream_L, BASSSync.BASS_SYNC_POS | BASSSync.BASS_SYNC_MIXTIME, loop_len, _loopSyncCallback, new IntPtr(1));
}
}
public override void Initialize(int deviceid)
{
Bass.BASS_SetDevice(deviceid);
BASSFlag flag = BASSFlag.BASS_DEFAULT | BASSFlag.BASS_SAMPLE_FLOAT;
if (this.IsDecoding)
{
flag = flag | BASSFlag.BASS_STREAM_DECODE;
}
int handle = BassMix.BASS_Mixer_StreamCreate(44100, this.NumChans, flag);
this.BassHandle = handle;
//Add the channel list in bass now
foreach (ChannelInfo info in this.Streams)
{
if (!info.BassHandle.HasValue)
{
info.Initialize(deviceid);
}
else
{
if (info.BassHandle.Value == 0)
{
info.Initialize(deviceid);
}
}
BassMix.BASS_Mixer_StreamAddChannel(this.BassHandle.Value, info.BassHandle.Value, BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_BUFFER);
info.Play = info.Play;
}
this.Play = this.Play;
//Bass.BASS_ChannelPlay(this.BassHandle.Value, false);
this.OnInitialize();
}
/// <summary>
/// Adds an audio stream to a mixer
/// </summary>
/// <param name="audioStream">The audio stream.</param>
/// <param name="mixerChannel">The mixer channel.</param>
public static void AddToMixer(AudioStream audioStream, MixerChannel mixerChannel)
{
if (audioStream == null || !audioStream.IsAudioLoaded())
{
throw new Exception("Audio file null or not audio not loaded");
}
if (mixerChannel.ChannelId == int.MinValue)
{
throw new Exception("Mixer channel not initialized");
}
// DebugHelper.WriteLine($"AddToMixer {audioStream.Description} {mixerChannel} {audioStream.Channel}...");
BassMix.BASS_Mixer_StreamAddChannel(mixerChannel.ChannelId, audioStream.ChannelId,
BASSFlag.BASS_MIXER_PAUSE | BASSFlag.BASS_MIXER_DOWNMIX | BASSFlag.BASS_MIXER_NORAMPIN |
BASSFlag.BASS_MUSIC_AUTOFREE);
Thread.Sleep(1);
audioStream.MixerChannelId = mixerChannel.ChannelId;
// DebugHelper.WriteLine("done");
}
private void ProcessStreamData(byte[] buffer, int offset, int length)
{
if (length < 1)
{
return;
}
// Write compressed audio data to Circulairbuffer
byte[] data = new byte[length];
Buffer.BlockCopy(buffer, offset, data, 0, length);
lock (lockObject)
{
cbbChunkAudio.Write(buffer, offset, length);
}
// If basshandle wasn't opened then open it now (when there is enough data. Min 4010 bytes)
if (inputHandle == 0 && cbbChunkAudio.UsedBytes >= 8000)
{
// bass needs for mp3 atleast 4000 bytes before is can play
inputHandle = Bass.BASS_StreamCreateFileUser(BASSStreamSystem.STREAMFILE_BUFFERPUSH, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT, bassFileProcs, GCHandle.ToIntPtr((GCHandle)gcHandle));
Bass.BASS_ChannelSetSync(inputHandle, BASSSync.BASS_SYNC_STALL, 0, bassStalledSync, GCHandle.ToIntPtr((GCHandle)gcHandle));
Bass.BASS_ChannelSetSync(inputHandle, BASSSync.BASS_SYNC_END, 0, bassEndSync, GCHandle.ToIntPtr((GCHandle)gcHandle));
mixerHandle = BassMix.BASS_Mixer_StreamCreate(44100, 2, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT);
BassMix.BASS_Mixer_StreamAddChannel(mixerHandle, inputHandle, BASSFlag.BASS_MIXER_FILTER | BASSFlag.BASS_MIXER_DOWNMIX);
Bass.BASS_ChannelPlay(inputHandle, false);
Bass.BASS_ChannelPlay(mixerHandle, false);
return;
}
// push new audiodata when available (and basstream is opened)
if (inputHandle != 0)
{
// voed bass met audio data zodat deze het naar pcm data kan decompressen
long bassBufLen = Bass.BASS_StreamGetFilePosition(inputHandle, BASSStreamFilePosition.BASS_FILEPOS_END);
long bassBufPos = Bass.BASS_StreamGetFilePosition(inputHandle, BASSStreamFilePosition.BASS_FILEPOS_BUFFER);
int todo = Convert.ToInt32(bassBufLen - bassBufPos);
if (todo > 0)
{
int count = todo;
int writeBytes = 0;
while (!cbbChunkAudio.IsEmpty && todo > 0 && writeBytes > -1)
{
if (count > 16384)
{
count = 16384;
}
byte[] tmpBuffer = new byte[count];
lock (lockObject)
{
count = cbbChunkAudio.Read(tmpBuffer, count);
}
if (count > 0)
{
writeBytes = Bass.BASS_StreamPutFileData(inputHandle, tmpBuffer, count);
todo -= writeBytes;
}
} //while audio buffer not empty
}
ProcessDecompressedData();
}
}
/// <summary>
/// Read mono from file
/// </summary>
/// <param name = "filename">Name of the file</param>
/// <param name = "samplerate">Sample rate</param>
/// <param name = "milliseconds">milliseconds to read</param>
/// <param name = "startmillisecond">Start millisecond</param>
/// <returns>Array of samples</returns>
public float[] ReadMonoFromFile(string filename, int samplerate, int milliseconds, int startmillisecond)
{
int totalmilliseconds = milliseconds <= 0 ? Int32.MaxValue : milliseconds + startmillisecond;
float[] data = null;
//create streams for re-sampling
int stream = Un4seen.Bass.Bass.BASS_StreamCreateFile(filename, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_MONO | BASSFlag.BASS_SAMPLE_FLOAT); //Decode the stream
if (stream == 0)
{
throw new Exception(Un4seen.Bass.Bass.BASS_ErrorGetCode().ToString());
}
int mixerStream = BassMix.BASS_Mixer_StreamCreate(samplerate, 1, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_MONO | BASSFlag.BASS_SAMPLE_FLOAT);
if (mixerStream == 0)
{
throw new Exception(Un4seen.Bass.Bass.BASS_ErrorGetCode().ToString());
}
if (BassMix.BASS_Mixer_StreamAddChannel(mixerStream, stream, BASSFlag.BASS_MIXER_FILTER))
{
const int bufferSize = 5512 * 10 * 4; /*read ten seconds at each iteration*/
float[] buffer = new float[bufferSize];
List <float[]> chunks = new List <float[]>();
int size = 0;
while ((float)(size) / samplerate * 1000 < totalmilliseconds)
{
//get re-sampled/mono data
int bytesRead = Un4seen.Bass.Bass.BASS_ChannelGetData(mixerStream, buffer, bufferSize);
if (bytesRead == 0)
{
break;
}
float[] chunk = new float[bytesRead / 4]; //each float contains 4 bytes
Array.Copy(buffer, chunk, bytesRead / 4);
chunks.Add(chunk);
size += bytesRead / 4; //size of the data
}
if ((float)(size) / samplerate * 1000 < (milliseconds + startmillisecond))
{
return(null); /*not enough samples to return the requested data*/
}
int start = (int)((float)startmillisecond * samplerate / 1000);
int end = (milliseconds <= 0) ? size : (int)((float)(startmillisecond + milliseconds) * samplerate / 1000);
data = new float[size];
int index = 0;
/*Concatenate*/
foreach (float[] chunk in chunks)
{
Array.Copy(chunk, 0, data, index, chunk.Length);
index += chunk.Length;
}
/*Select specific part of the song*/
if (start != 0 || end != size)
{
float[] temp = new float[end - start];
Array.Copy(data, start, temp, 0, end - start);
data = temp;
}
}
else
{
throw new Exception(Un4seen.Bass.Bass.BASS_ErrorGetCode().ToString());
}
return(data);
}
public bool CombineMixerStreams(int mixerStream, int stream, BASSFlag flags)
{
return(BassMix.BASS_Mixer_StreamAddChannel(mixerStream, stream, flags));
}
// メソッド
public CSoundDeviceASIO(long n希望バッファサイズms, int _nASIODevice)
{
// 初期化。
Trace.TraceInformation("BASS (ASIO) の初期化を開始します。");
this.e出力デバイス = ESoundDeviceType.Unknown;
this.n実出力遅延ms = 0;
this.n経過時間ms = 0;
this.n経過時間を更新したシステム時刻ms = CTimer.n未使用;
this.tmシステムタイマ = new CTimer();
this.nASIODevice = _nASIODevice;
#region [ BASS registration ]
// BASS.NET ユーザ登録（BASSスプラッシュが非表示になる）。
BassNet.Registration("*****@*****.**", "2X9181017152222");
#endregion
#region [ BASS Version Check ]
// BASS のバージョンチェック。
int nBASSVersion = Utils.HighWord(Bass.BASS_GetVersion());
if (nBASSVersion != Bass.BASSVERSION)
{
throw new DllNotFoundException(string.Format("bass.dll のバージョンが異なります({0})。このプログラムはバージョン{1}で動作します。", nBASSVersion, Bass.BASSVERSION));
}
int nBASSMixVersion = Utils.HighWord(BassMix.BASS_Mixer_GetVersion());
if (nBASSMixVersion != BassMix.BASSMIXVERSION)
{
throw new DllNotFoundException(string.Format("bassmix.dll のバージョンが異なります({0})。このプログラムはバージョン{1}で動作します。", nBASSMixVersion, BassMix.BASSMIXVERSION));
}
int nBASSASIO = Utils.HighWord(BassAsio.BASS_ASIO_GetVersion());
if (nBASSASIO != BassAsio.BASSASIOVERSION)
{
throw new DllNotFoundException(string.Format("bassasio.dll のバージョンが異なります({0})。このプログラムはバージョン{1}で動作します。", nBASSASIO, BassAsio.BASSASIOVERSION));
}
#endregion
// BASS の設定。
this.bIsBASSFree = true;
if (!Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_UPDATEPERIOD, 0)) // 0:BASSストリームの自動更新を行わない。
{
Trace.TraceWarning($"BASS_SetConfig({nameof(BASSConfig.BASS_CONFIG_UPDATEPERIOD)}) に失敗しました。[{Bass.BASS_ErrorGetCode()}]");
}
if (!Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_UPDATETHREADS, 0)) // 0:BASSストリームの自動更新を行わない。
{
Trace.TraceWarning($"BASS_SetConfig({nameof(BASSConfig.BASS_CONFIG_UPDATETHREADS)}) に失敗しました。[{Bass.BASS_ErrorGetCode()}]");
}
// BASS の初期化。
int nデバイス = 0; // 0:"no device" … BASS からはデバイスへアクセスさせない。アクセスは BASSASIO アドオンから行う。
int n周波数 = 44100; // 仮決め。最終的な周波数はデバイス（≠ドライバ）が決める。
if (!Bass.BASS_Init(nデバイス, n周波数, BASSInit.BASS_DEVICE_DEFAULT, IntPtr.Zero))
{
throw new Exception(string.Format("BASS の初期化に失敗しました。(BASS_Init)[{0}]", Bass.BASS_ErrorGetCode().ToString()));
}
Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_CURVE_VOL, true);
//Debug.WriteLine( "BASS_Init()完了。" );
#region [ デバッグ用: ASIOデバイスのenumerateと、ログ出力 ]
// CEnumerateAllAsioDevices.GetAllASIODevices();
//Debug.WriteLine( "BassAsio.BASS_ASIO_GetDeviceInfo():" );
// int a, count = 0;
// BASS_ASIO_DEVICEINFO asioDevInfo;
// for ( a = 0; ( asioDevInfo = BassAsio.BASS_ASIO_GetDeviceInfo( a ) ) != null; a++ )
// {
// Trace.TraceInformation( "ASIO Device {0}: {1}, driver={2}", a, asioDevInfo.name, asioDevInfo.driver );
// count++; // count it
// }
#endregion
// BASS ASIO の初期化。
BASS_ASIO_INFO asioInfo = null;
if (BassAsio.BASS_ASIO_Init(nASIODevice, BASSASIOInit.BASS_ASIO_THREAD)) // 専用スレッドにて起動
{
#region [ ASIO の初期化に成功。]
//-----------------
this.e出力デバイス = ESoundDeviceType.ASIO;
asioInfo = BassAsio.BASS_ASIO_GetInfo();
this.n出力チャンネル数 = asioInfo.outputs;
this.db周波数 = BassAsio.BASS_ASIO_GetRate();
this.fmtASIOデバイスフォーマット = BassAsio.BASS_ASIO_ChannelGetFormat(false, 0);
Trace.TraceInformation("BASS を初期化しました。(ASIO, デバイス:\"{0}\", 入力{1}, 出力{2}, {3}Hz, バッファ{4}～{6}sample ({5:0.###}～{7:0.###}ms), デバイスフォーマット:{8})",
asioInfo.name,
asioInfo.inputs,
asioInfo.outputs,
this.db周波数.ToString("0.###"),
asioInfo.bufmin, asioInfo.bufmin * 1000 / this.db周波数,
asioInfo.bufmax, asioInfo.bufmax * 1000 / this.db周波数,
this.fmtASIOデバイスフォーマット.ToString()
);
this.bIsBASSFree = false;
#region [ debug: channel format ]
//BASS_ASIO_CHANNELINFO chinfo = new BASS_ASIO_CHANNELINFO();
//int chan = 0;
//while ( true )
//{
// if ( !BassAsio.BASS_ASIO_ChannelGetInfo( false, chan, chinfo ) )
// break;
// Debug.WriteLine( "Ch=" + chan + ": " + chinfo.name.ToString() + ", " + chinfo.group.ToString() + ", " + chinfo.format.ToString() );
// chan++;
//}
#endregion
//-----------------
#endregion
}
else
{
#region [ ASIO の初期化に失敗。]
//-----------------
BASSError errcode = Bass.BASS_ErrorGetCode();
string errmes = errcode.ToString();
if (errcode == BASSError.BASS_OK)
{
errmes = "BASS_OK; The device may be dissconnected";
}
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("BASS (ASIO) の初期化に失敗しました。(BASS_ASIO_Init)[{0}]", errmes));
//-----------------
#endregion
}
// ASIO 出力チャンネルの初期化。
this.tAsioProc = new ASIOPROC(this.tAsio処理); // アンマネージに渡す delegate は、フィールドとして保持しておかないとGCでアドレスが変わってしまう。
if (!BassAsio.BASS_ASIO_ChannelEnable(false, 0, this.tAsioProc, IntPtr.Zero)) // 出力チャンネル0 の有効化。
{
#region [ ASIO 出力チャンネルの初期化に失敗。]
//-----------------
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("Failed BASS_ASIO_ChannelEnable() [{0}]", BassAsio.BASS_ASIO_ErrorGetCode().ToString()));
//-----------------
#endregion
}
for (int i = 1; i < this.n出力チャンネル数; i++) // 出力チャネルを全てチャネル0とグループ化する。
{ // チャネル1だけを0とグループ化すると、3ch以上の出力をサポートしたカードでの動作がおかしくなる
if (!BassAsio.BASS_ASIO_ChannelJoin(false, i, 0))
{
#region [ 初期化に失敗。]
//-----------------
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("Failed BASS_ASIO_ChannelJoin({1}) [{0}]", BassAsio.BASS_ASIO_ErrorGetCode().ToString(), i));
//-----------------
#endregion
}
}
if (!BassAsio.BASS_ASIO_ChannelSetFormat(false, 0, this.fmtASIOチャンネルフォーマット)) // 出力チャンネル0のフォーマット
{
#region [ ASIO 出力チャンネルの初期化に失敗。]
//-----------------
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("Failed BASS_ASIO_ChannelSetFormat() [{0}]", BassAsio.BASS_ASIO_ErrorGetCode().ToString()));
//-----------------
#endregion
}
// ASIO 出力と同じフォーマットを持つ BASS ミキサーを作成。
var flag = BASSFlag.BASS_MIXER_NONSTOP | BASSFlag.BASS_STREAM_DECODE; // デコードのみ＝発声しない。ASIO に出力されるだけ。
if (this.fmtASIOデバイスフォーマット == BASSASIOFormat.BASS_ASIO_FORMAT_FLOAT)
{
flag |= BASSFlag.BASS_SAMPLE_FLOAT;
}
this.hMixer = BassMix.BASS_Mixer_StreamCreate((int)this.db周波数, this.n出力チャンネル数, flag);
if (this.hMixer == 0)
{
BASSError err = Bass.BASS_ErrorGetCode();
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("BASSミキサ(mixing)の作成に失敗しました。[{0}]", err));
}
// BASS ミキサーの1秒あたりのバイト数を算出。
var mixerInfo = Bass.BASS_ChannelGetInfo(this.hMixer);
int nサンプルサイズbyte = 0;
switch (this.fmtASIOチャンネルフォーマット)
{
case BASSASIOFormat.BASS_ASIO_FORMAT_16BIT: nサンプルサイズbyte = 2; break;
case BASSASIOFormat.BASS_ASIO_FORMAT_24BIT: nサンプルサイズbyte = 3; break;
case BASSASIOFormat.BASS_ASIO_FORMAT_32BIT: nサンプルサイズbyte = 4; break;
case BASSASIOFormat.BASS_ASIO_FORMAT_FLOAT: nサンプルサイズbyte = 4; break;
}
//long nミキサーの1サンプルあたりのバイト数 = /*mixerInfo.chans*/ 2 * nサンプルサイズbyte;
long nミキサーの1サンプルあたりのバイト数 = mixerInfo.chans * nサンプルサイズbyte;
this.nミキサーの1秒あたりのバイト数 = nミキサーの1サンプルあたりのバイト数 * mixerInfo.freq;
// 単純に、hMixerの音量をMasterVolumeとして制御しても、
// ChannelGetData()の内容には反映されない。
// そのため、もう一段mixerを噛ませて、一段先のmixerからChannelGetData()することで、
// hMixerの音量制御を反映させる。
this.hMixer_DeviceOut = BassMix.BASS_Mixer_StreamCreate(
(int)this.db周波数, this.n出力チャンネル数, flag);
if (this.hMixer_DeviceOut == 0)
{
BASSError errcode = Bass.BASS_ErrorGetCode();
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("BASSミキサ(最終段)の作成に失敗しました。[{0}]", errcode));
}
{
bool b1 = BassMix.BASS_Mixer_StreamAddChannel(this.hMixer_DeviceOut, this.hMixer, BASSFlag.BASS_DEFAULT);
if (!b1)
{
BASSError errcode = Bass.BASS_ErrorGetCode();
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception(string.Format("BASSミキサ(最終段とmixing)の接続に失敗しました。[{0}]", errcode));
}
;
}
// 出力を開始。
this.nバッファサイズsample = (int)(n希望バッファサイズms * this.db周波数 / 1000.0);
//this.nバッファサイズsample = (int) nバッファサイズbyte;
if (!BassAsio.BASS_ASIO_Start(this.nバッファサイズsample)) // 範囲外の値を指定した場合は自動的にデフォルト値に設定される。
{
BASSError err = BassAsio.BASS_ASIO_ErrorGetCode();
BassAsio.BASS_ASIO_Free();
Bass.BASS_Free();
this.bIsBASSFree = true;
throw new Exception("ASIO デバイス出力開始に失敗しました。" + err.ToString());
}
else
{
int n遅延sample = BassAsio.BASS_ASIO_GetLatency(false); // この関数は BASS_ASIO_Start() 後にしか呼び出せない。
int n希望遅延sample = (int)(n希望バッファサイズms * this.db周波数 / 1000.0);
this.n実バッファサイズms = this.n実出力遅延ms = (long)(n遅延sample * 1000.0f / this.db周波数);
Trace.TraceInformation("ASIO デバイス出力開始：バッファ{0}sample(希望{1}) [{2}ms(希望{3}ms)]", n遅延sample, n希望遅延sample, this.n実出力遅延ms, n希望バッファサイズms);
}
}
