public static void LoadAudio(AudioStream audioStream)
{
// abort if audio data already loaded
if (audioStream.IsAudioLoaded())
{
return;
}
AudioDataHelper.LoadAudioData(audioStream);
var channel = Bass.BASS_StreamCreateFile(audioStream.AudioData.DataPointer,
0,
audioStream.AudioData.Data.Length,
BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN);
audioStream.AddChannel(channel);
if (audioStream.ChannelId == 0)
{
throw new Exception("Cannot load " + audioStream.Filename + ". Error code: " + Bass.BASS_ErrorGetCode());
}
// DebugHelper.WriteLine("Creating reverse FX stream " + audioStream.Description + "...");
audioStream.AddChannel(BassFx.BASS_FX_ReverseCreate(audioStream.ChannelId, 1, BASSFlag.BASS_STREAM_DECODE));
if (audioStream.ChannelId == 0)
{
throw new Exception("Cannot load " + audioStream.Filename + ". Error code: " + Bass.BASS_ErrorGetCode());
}
Bass.BASS_ChannelSetAttribute(audioStream.ChannelId, BASSAttribute.BASS_ATTRIB_REVERSE_DIR,
(float)BASSFXReverse.BASS_FX_RVS_FORWARD);
// DebugHelper.WriteLine("Creating tempo FX stream " + audioStream.Description + "...");
audioStream.AddChannel(BassFx.BASS_FX_TempoCreate(audioStream.ChannelId,
BASSFlag.BASS_FX_FREESOURCE | BASSFlag.BASS_STREAM_DECODE));
if (audioStream.ChannelId == 0)
{
throw new Exception("Cannot load " + audioStream.Filename + ". Error code: " + Bass.BASS_ErrorGetCode());
}
// DebugHelper.WriteLine("Calculating track length " + audioStream.Description + "...");
audioStream.Length = Bass.BASS_ChannelGetLength(audioStream.ChannelId);
audioStream.DefaultSampleRate = GetSampleRate(audioStream.ChannelId);
SetReplayGain(audioStream);
SetPosition(audioStream, 0);
}
public void OpenFile(string filePath)
{
Unload();
streamHandle = Bass.CreateStream(filePath, Flags: BassFlags.Decode | BassFlags.Prescan);
activeHandle = BassFx.TempoCreate(streamHandle, BassFlags.FxFreeSource);
syncHandle = Bass.ChannelSetSync(activeHandle, SyncFlags.End, 0, SyncProcedureEndStream);
Bass.ChannelSetAttribute(activeHandle, ChannelAttribute.TempoUseQuickAlgorithm, 1);
ApplyEffects();
status = PlayerStatus.FileLoaded;
}
void Load_Sound(string File_Name = "")
{
Location_S.Value = 0;
Location_T.Text = "00:00";
int StreamHandle;
StreamHandle = Bass.BASS_StreamCreateFile(File_Name, 0, 0, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_LOOP);
Stream = BassFx.BASS_FX_TempoCreate(StreamHandle, BASSFlag.BASS_FX_FREESOURCE);
Bass.BASS_ChannelSetAttribute(Stream, BASSAttribute.BASS_ATTRIB_VOL, (float)Volume_S.Value / 100);
Bass.BASS_ChannelSetDevice(Stream, Video_Mode.Sound_Device);
Location_S.Maximum = Bass.BASS_ChannelBytes2Seconds(Stream, Bass.BASS_ChannelGetLength(Stream, BASSMode.BASS_POS_BYTES));
Bass.BASS_ChannelPlay(Stream, true);
}
private void SimpleFX_Load(object sender, System.EventArgs e)
{
if (Bass.BASS_Init(-1, 44100, BASSInit.BASS_DEVICE_SPEAKERS, this.Handle))
{
// all ok
// load BASS_FX
BassFx.BASS_FX_GetVersion();
}
else
{
MessageBox.Show(this, "Bass_Init error!");
}
}
public void Play(string id, float volume = 1, float speed = 1)
{
if (_sounds.TryGetValue(id, out var sound))
{
var s = Bass.BASS_StreamCreateFile(sound, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN | BASSFlag.BASS_FX_FREESOURCE); //sound, 0, 0, BASSFlag.BASS_STREAM_AUTOFREE);
s = BassFx.BASS_FX_TempoCreate(s, BASSFlag.BASS_STREAM_PRESCAN | BASSFlag.BASS_STREAM_AUTOFREE | BASSFlag.BASS_FX_FREESOURCE | BASSFlag.BASS_MUSIC_AUTOFREE);
Bass.BASS_ChannelSetAttribute(s, BASSAttribute.BASS_ATTRIB_VOL, volume);
Bass.BASS_ChannelPlay(s, false);
}
}
/// <summary>
/// 曲全体のテンポを取得する
/// </summary>
/// <returns>テンポ値</returns>
/// <remarks>テンポ値の範囲は70-300</remarks>
public float GetTempo()
{
fTempo = BassFx.BASS_FX_BPM_DecodeGet(
this.hBassStream,
0,
nTotalSeconds,
(300 << 16) + 70, // MAX BPM=320, MIN BPM=70
//0,
BASSFXBpm.BASS_FX_BPM_DEFAULT, //BASSFXBpm.BASS_FX_BPM_MULT2,
null,
IntPtr.Zero);
return(fTempo);
}
/// <summary>
/// 曲の一部分のテンポを取得する
/// </summary>
/// <param name="startSec">開始位置</param>
/// <param name="endSec">終了位置</param>
/// <returns>テンポ値</returns>
/// <remarks>テンポ値の範囲は70-300</remarks>
public float GetTempo(double startSec, double endSec)
{
fTempo = BassFx.BASS_FX_BPM_DecodeGet(
this.hBassStream,
startSec,
endSec,
(300 << 16) + 70, // MAX BPM=320, MIN BPM=70
//0,
BASSFXBpm.BASS_FX_BPM_DEFAULT, //BASSFXBpm.BASS_FX_BPM_MULT2,
null,
IntPtr.Zero);
return(fTempo);
}
public override void Connect(IBassStreamComponent previous)
{
this.Rate = previous.Rate;
this.Channels = previous.Channels;
this.ChannelHandle = BassFx.TempoCreate(previous.ChannelHandle, previous.Flags);
if (this.ChannelHandle == 0)
{
BassUtils.Throw();
}
if (this.IsActive)
{
this.Update();
}
}
private void PlaySong(Song s)
{
if (s == null)
{
return;
}
if (_channel != 0)
{
StopSong();
}
if (settings.AudioDevice == 0)
{
MessageBox.Show("オーディオデバイスを設定してください。");
SongsList.SelectedIndex = -1;
OpenSettings(null, null);
return;
}
Bass.BASS_SetDevice(settings.AudioDevice);
Bass.BASS_Init(settings.AudioDevice, 44100, BASSInit.BASS_DEVICE_DEFAULT, IntPtr.Zero);
_channel = Bass.BASS_StreamCreateFile(s.AudioPath, 0L, 0L, BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_DECODE);
_channel = BassFx.BASS_FX_TempoCreate(_channel, BASSFlag.BASS_DEFAULT);
_playing = s;
if (_channel == 0)
{
return;
}
if (_isDoubleTime)
{
ToDoubleTime(null, null);
}
if (_isNightcore)
{
ToNightcore(null, null);
}
_timer.Start();
ChangeVolume(null, null);
Bass.BASS_ChannelPlay(_channel, false);
PlayingStatus.IsEnabled = true;
PlayingStatus.ToolTip = "曲の再生を一時停止します。";
PlayingStatus.Content = "";
PlayingTitle.Text = s.Title;
PlayingArtist.Text = s.Artist;
SongsList.ScrollIntoView(s);
}
public TrackBass(Stream data, bool quick = false)
{
PendingActions.Enqueue(() =>
{
Preview = quick;
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
//encapsulate incoming stream with async buffer if it isn't already.
dataStream = data as AsyncBufferStream ?? new AsyncBufferStream(data, quick ? 8 : -1);
var procs = new DataStreamFileProcedures(dataStream);
BassFlags flags = Preview ? 0 : BassFlags.Decode | BassFlags.Prescan;
activeStream = Bass.CreateStream(StreamSystem.NoBuffer, flags, procs.BassProcedures, IntPtr.Zero);
if (!Preview)
{
// We assign the BassFlags.Decode streams to the device "bass_nodevice" to prevent them from getting
// cleaned up during a Bass.Free call. This is necessary for seamless switching between audio devices.
// Further, we provide the flag BassFlags.FxFreeSource such that freeing the activeStream also frees
// all parent decoding streams.
const int bass_nodevice = 0x20000;
Bass.ChannelSetDevice(activeStream, bass_nodevice);
tempoAdjustStream = BassFx.TempoCreate(activeStream, BassFlags.Decode | BassFlags.FxFreeSource);
Bass.ChannelSetDevice(activeStream, bass_nodevice);
activeStream = BassFx.ReverseCreate(tempoAdjustStream, 5f, BassFlags.Default | BassFlags.FxFreeSource);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoUseQuickAlgorithm, 1);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoOverlapMilliseconds, 4);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoSequenceMilliseconds, 30);
}
Length = Bass.ChannelBytes2Seconds(activeStream, Bass.ChannelGetLength(activeStream)) * 1000;
float frequency;
Bass.ChannelGetAttribute(activeStream, ChannelAttribute.Frequency, out frequency);
initialFrequency = frequency;
bitrate = (int)Bass.ChannelGetAttribute(activeStream, ChannelAttribute.Bitrate);
isLoaded = true;
OnLoaded?.Invoke(this);
});
InvalidateState();
}
public void BassInit()
{
if (Global.EngineOnline)
{
//eq.intializeEQ();
foreach (FxItem i in Stack.Children)
{
i.Direct2Def();
}
BassFx.BASS_FX_GetVersion();
BassEngine engine = BassEngine.Instance;
engine.PropertyChanged += PropertyChanged;
}
}
public void Load(string file)
{
_file = file;
decode = Bass.BASS_StreamCreateFile(file, 0L, 0L, BASSFlag.BASS_STREAM_DECODE);
stream = BassFx.BASS_FX_TempoCreate(decode, BASSFlag.BASS_SAMPLE_FLOAT);
Bass.BASS_ChannelSetAttribute(stream, BASSAttribute.BASS_ATTRIB_VOL, _Vol);
if (_Pitch != -1024)
{
Bass.BASS_ChannelSetAttribute(stream, BASSAttribute.BASS_ATTRIB_TEMPO_PITCH, _Pitch);
}
if (_Speed != -1024)
{
Bass.BASS_ChannelSetAttribute(stream, BASSAttribute.BASS_ATTRIB_TEMPO, _Speed);
}
}
protected int GetHandle(string filepath)
{
int rawHandle = Bass.BASS_StreamCreateFile(filepath, 0, 0, BASSFlag.BASS_STREAM_DECODE);
if (rawHandle == 0)
{
throw new ArgumentException("cannot create a stream.");
}
int tempoHandle = BassFx.BASS_FX_TempoCreate(rawHandle, BASSFlag.BASS_FX_FREESOURCE);
if (tempoHandle == 0)
{
throw new ArgumentException("cannot create a stream.");
}
return(tempoHandle);
}
private void openfile_FileOk(object sender, CancelEventArgs e)
{
if (openfile.FileName != String.Empty)
{
audioPath = openfile.FileName;
fileName.Text = audioPath;
playButton.Enabled = true;
saveButton.Enabled = true;
Bass.BASS_StreamFree(audioStream);
Bass.BASS_StreamFree(fxStream);
audioStream = Bass.BASS_StreamCreateFile(audioPath, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN);
if (audioStream != 0)
{
fxStream = BassFx.BASS_FX_TempoCreate(audioStream, BASSFlag.BASS_FX_FREESOURCE);
if (fxStream != 0)
{
// Вешаем эффекты до воиспроизведения, чтобы не было задержки
distortion = Bass.BASS_ChannelSetFX(fxStream, BASSFXType.BASS_FX_BFX_DISTORTION, -4);
BASS_BFX_DISTORTION dist = new BASS_BFX_DISTORTION();
dist.fDrive = distAmount.Value;
dist.fDryMix = 5.0f;
dist.fWetMix = distAmount.Value / 3.0f;
dist.fFeedback = -0.5f;
dist.fVolume = 0.1f;
Bass.BASS_FXSetParameters(distortion, dist);
// --
bassboost = Bass.BASS_ChannelSetFX(fxStream, BASSFXType.BASS_FX_DX8_PARAMEQ, -4);
BASS_DX8_PARAMEQ eq = new BASS_DX8_PARAMEQ();
eq.fBandwidth = 24;
eq.fCenter = 80;
eq.fGain = bassAmount.Value;
Bass.BASS_FXSetParameters(bassboost, eq);
bassboost2 = Bass.BASS_ChannelSetFX(fxStream, BASSFXType.BASS_FX_DX8_PARAMEQ, -4);
Bass.BASS_FXSetParameters(bassboost2, eq); return;
}
}
MessageBox.Show(this, "Чот нихуя");
}
}
internal AudioTrackBass(Stream data, bool quick = false, bool loop = false)
{
procs = new BASS_FILEPROCS(ac_Close, ac_Length, ac_Read, ac_Seek);
Preview = quick;
Looping = loop;
BASSFlag flags = Preview ? 0 : (BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN);
if (data == null)
{
throw new AudioNotLoadedException();
}
else
{
//encapsulate incoming stream with async buffer if it isn't already.
DataStream = data as AsyncBufferStream;
if (DataStream == null)
{
DataStream = new AsyncBufferStream(data, quick ? 8 : -1);
}
audioStreamPrefilter = Bass.BASS_StreamCreateFileUser(BASSStreamSystem.STREAMFILE_NOBUFFER, flags, procs, IntPtr.Zero);
}
if (Preview)
{
audioStream = audioStreamForwards = audioStreamPrefilter;
}
else
{
audioStream = audioStreamForwards = BassFx.BASS_FX_TempoCreate(audioStreamPrefilter, loop ? BASSFlag.BASS_MUSIC_LOOP : BASSFlag.BASS_DEFAULT);
audioStreamBackwards = BassFx.BASS_FX_ReverseCreate(audioStreamPrefilter, 5f, BASSFlag.BASS_DEFAULT);
Bass.BASS_ChannelSetAttribute(audioStream, BASSAttribute.BASS_ATTRIB_TEMPO_OPTION_USE_QUICKALGO, Bass.TRUE);
Bass.BASS_ChannelSetAttribute(audioStream, BASSAttribute.BASS_ATTRIB_TEMPO_OPTION_OVERLAP_MS, 4);
Bass.BASS_ChannelSetAttribute(audioStream, BASSAttribute.BASS_ATTRIB_TEMPO_OPTION_SEQUENCE_MS, 30);
}
Length = (Bass.BASS_ChannelBytes2Seconds(audioStream, Bass.BASS_ChannelGetLength(audioStream)) * 1000);
Bass.BASS_ChannelGetAttribute(audioStream, BASSAttribute.BASS_ATTRIB_FREQ, ref initialAudioFrequency);
currentAudioFrequency = initialAudioFrequency;
AudioEngine.RegisterTrack(this);
}
public Speech()
{
DataContractJsonSerializer serialazer = new DataContractJsonSerializer(typeof(SpeechPart[]));
using (FileStream stream = new FileStream("Sounds.json", FileMode.Open))
{
parts = (SpeechPart[])serialazer.ReadObject(stream);
}
Bass.BASS_Init(-1, 44100, BASSInit.BASS_DEVICE_DEFAULT, IntPtr.Zero);
stream = Bass.BASS_StreamCreateFile("Sounds.wav", 0L, 0L, BASSFlag.BASS_STREAM_DECODE);
stream = BassFx.BASS_FX_TempoCreate(stream, BASSFlag.BASS_SAMPLE_LOOP | BASSFlag.BASS_FX_FREESOURCE);
worker = new BackgroundWorker();
worker.WorkerSupportsCancellation = true;
worker.DoWork += Run;
worker.RunWorkerCompleted += Done;
}
private void Scan()
{
long pos = Bass.BASS_ChannelGetLength(this.handle);
this.len = Bass.BASS_ChannelBytes2Seconds(this.handle, pos);
_beatProc = new BPMBEATPROC(MyBeatProc);
BassFx.BASS_FX_BPM_BeatCallbackSet(this.handle, _beatProc, IntPtr.Zero);
BassFx.BASS_FX_BPM_BeatSetParameters(this.handle, this.parameters.Width, this.parameters.Center, this.parameters.Release);
BassFx.BASS_FX_BPM_BeatDecodeGet(this.handle, 0.0, this.len, BASSFXBpm.BASS_FX_BPM_BKGRND, _beatProc, IntPtr.Zero);
Bass.BASS_StreamFree(this.handle);
if (OnComplete != null)
{
OnComplete(this.parameters.Index);
}
}
internal AudioStream(AudioManager manager, string path, ResourceContainer resourceContainer) : base(manager)
{
this.path = path;
decodeStream = Bass.CreateStream(path, 0, 0, BassFlags.Decode | BassFlags.Prescan);
if (decodeStream == 0)
{
Trace.WriteLine($"Failed to load audio stream ({path}): {Bass.LastError}");
return;
}
stream = BassFx.TempoCreate(decodeStream, BassFlags.Default);
Bass.ChannelSetAttribute(stream, ChannelAttribute.TempoUseQuickAlgorithm, 1);
Bass.ChannelSetAttribute(stream, ChannelAttribute.TempoOverlapMilliseconds, 4);
Bass.ChannelSetAttribute(stream, ChannelAttribute.TempoSequenceMilliseconds, 30);
Channel = stream;
}
public void Load(string file)
{
var stream = Bass.BASS_StreamCreateFile(file, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_STREAM_PRESCAN | BASSFlag.BASS_FX_FREESOURCE);
var volume = Volume;
var tempo = Tempo;
Bass.BASS_StreamFree(streamID);
Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_BUFFER, 250);
Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_UPDATEPERIOD, 5);
streamID = BassFx.BASS_FX_TempoCreate(stream, BASSFlag.BASS_STREAM_PRESCAN);
Volume = volume;
Tempo = tempo;
Reset();
}
private void mainForm_Load(object sender, EventArgs e)
{
// Подгружаем BASS
if (Bass.BASS_Init(-1, 44100, BASSInit.BASS_DEVICE_SPEAKERS, this.Handle))
{
BASS_INFO info = new BASS_INFO();
Bass.BASS_GetInfo(info);
debugInfo.Text += info + "\n" + BassFx.BASS_FX_GetVersion();
Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_UPDATEPERIOD, 200);
Bass.BASS_SetConfig(BASSConfig.BASS_CONFIG_BUFFER, 1000);
}
else
{
MessageBox.Show(this, "BASS_Init() не сработал, басов не будет");
Close();
}
}
public async void SaveToFile(string file, Action finished)
{
await Task.Factory.StartNew(() =>
{
//从文件中读取解码流
int strm = Bass.BASS_StreamCreateFile(_file, 0, 0, BASSFlag.BASS_STREAM_DECODE);
//从strm解码流中创建FX效果器
strm = BassFx.BASS_FX_TempoCreate(strm, BASSFlag.BASS_STREAM_DECODE);
//为效果器设置参数 Pitch&Speed
if (_Pitch != -1024)
{
Bass.BASS_ChannelSetAttribute(strm, BASSAttribute.BASS_ATTRIB_TEMPO_PITCH, _Pitch);
}
if (_Speed != -1024)
{
Bass.BASS_ChannelSetAttribute(strm, BASSAttribute.BASS_ATTRIB_TEMPO, _Speed);
}
//初始化编码器
EncoderLAME l = new EncoderLAME(strm);
l.InputFile = null; //STDIN
l.OutputFile = file; //输出文件路径
l.LAME_Bitrate = (int)EncoderLAME.BITRATE.kbps_128; //比特率
l.LAME_Mode = EncoderLAME.LAMEMode.Default; //默认模式
l.LAME_Quality = EncoderLAME.LAMEQuality.Quality; //高品质
l.LAME_TargetSampleRate = (int)EncoderLAME.SAMPLERATE.Hz_44100; //44100码率
//解码流开始(并不是播放，也不会有声音输出)
Bass.BASS_ChannelPlay(strm, false);
//开始编码
l.Start(null, IntPtr.Zero, false);
byte[] encBuffer = new byte[65536]; // our dummy encoder buffer
while (Bass.BASS_ChannelIsActive(strm) == BASSActive.BASS_ACTIVE_PLAYING)
{
// getting sample data will automatically feed the encoder
int len = Bass.BASS_ChannelGetData(strm, encBuffer, encBuffer.Length);
}
l.Stop(); // finish
Bass.BASS_StreamFree(strm);
finished();
});
}
void DecodingBPM(bool newStream, double startSec, double endSec, string fp)
{
if (newStream)
{
// open the same file as played but for bpm decoding detection
_bpmchan = Bass.CreateStream(fp, 0, 0, BassFlags.Decode);
if (_bpmchan == 0)
{
_bpmchan = Bass.MusicLoad(fp, 0, 0, BassFlags.Decode | BassFlags.Prescan, 0);
}
}
// detect bpm in background and return progress in GetBPM_ProgressCallback function
if (_bpmchan != 0)
{
Bpm = BassFx.BPMDecodeGet(_bpmchan, startSec, endSec, 0, BassFlags.FxBpmBackground | BassFlags.FXBpmMult2 | BassFlags.FxFreeSource, _progressProcedure);
}
}
public void Stop()
{
_threadDispatcher.Invoke(new Action(() =>
{
BassFx.BASS_FX_BPM_BeatCallbackReset(_recordChan);
if (HasWasapi)
{
_wasapi.Stop();
_wasapi.Dispose();
_wasapi = null;
BassWasapi.BASS_WASAPI_Free();
}
else
{
Bass.BASS_ChannelStop(_recordChan);
}
Bass.BASS_Free();
}));
}
private void LoadBassLibraries(string targetPath)
{
if (!Bass.LoadMe(targetPath))
{
throw new BassException("Could not load bass native libraries from the following path: " + targetPath);
}
if (!BassMix.LoadMe(targetPath))
{
throw new BassException("Could not load bassmix library from the following path: " + targetPath);
}
if (!BassFx.LoadMe(targetPath))
{
throw new BassException("Could not load bassfx library from the following path: " + targetPath);
}
DummyCallToLoadBassLibraries();
}
private void Setup()
{
if (this.FChannel != null)
{
if (this.FChannel.BassHandle.HasValue)
{
_beatProc = new BPMBEATPROC(MyBeatProc);
BassFx.BASS_FX_BPM_BeatCallbackSet(this.FChannel.BassHandle.Value, _beatProc, IntPtr.Zero);
double band, center, release;
this.FPinInBandWidth.GetValue(0, out band);
this.FPinInCenter.GetValue(0, out center);
this.FPinInRelease.GetValue(0, out release);
BassFx.BASS_FX_BPM_BeatSetParameters(this.FChannel.BassHandle.Value, (float)band, (float)center, (float)release);
}
}
}
public AudioTrackBass(Stream data, bool quick = false)
{
PendingActions.Enqueue(() =>
{
Preview = quick;
BassFlags flags = Preview ? 0 : (BassFlags.Decode | BassFlags.Prescan);
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
//encapsulate incoming stream with async buffer if it isn't already.
dataStream = data as AsyncBufferStream ?? new AsyncBufferStream(data, quick ? 8 : -1);
procs = new DataStreamFileProcedures(dataStream);
audioStreamPrefilter = Bass.CreateStream(StreamSystem.NoBuffer, flags, procs.BassProcedures, IntPtr.Zero);
if (Preview)
{
activeStream = audioStreamPrefilter;
}
else
{
activeStream = BassFx.TempoCreate(audioStreamPrefilter, BassFlags.Decode);
activeStream = BassFx.ReverseCreate(activeStream, 5f, BassFlags.Default);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoUseQuickAlgorithm, 1);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoOverlapMilliseconds, 4);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoSequenceMilliseconds, 30);
}
Length = (Bass.ChannelBytes2Seconds(activeStream, Bass.ChannelGetLength(activeStream)) * 1000);
Bass.ChannelGetAttribute(activeStream, ChannelAttribute.Frequency, out initialFrequency);
SampleRate = initialFrequency;
Bass.ChannelSetDSP(activeStream, dspProcessor);
});
InvalidateState();
}
public AudioTrackBass(Stream data, bool quick = false, bool loop = false)
{
Preview = quick;
Looping = loop;
BassFlags flags = Preview ? 0 : (BassFlags.Decode | BassFlags.Prescan);
if (data == null)
{
throw new Exception(@"Data couldn't be loaded!");
}
else
{
//encapsulate incoming stream with async buffer if it isn't already.
dataStream = data as AsyncBufferStream;
if (dataStream == null)
{
dataStream = new AsyncBufferStream(data, quick ? 8 : -1);
}
procs = new DataStreamFileProcedures(dataStream);
audioStreamPrefilter = Bass.CreateStream(StreamSystem.NoBuffer, flags, procs.BassProcedures, IntPtr.Zero);
}
if (Preview)
{
activeStream = audioStreamPrefilter;
}
else
{
activeStream = BassFx.TempoCreate(audioStreamPrefilter, BassFlags.Decode);
activeStream = BassFx.ReverseCreate(activeStream, 5f, BassFlags.Default);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoUseQuickAlgorithm, 1);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoOverlapMilliseconds, 4);
Bass.ChannelSetAttribute(activeStream, ChannelAttribute.TempoSequenceMilliseconds, 30);
}
Length = (Bass.ChannelBytes2Seconds(activeStream, Bass.ChannelGetLength(activeStream)) * 1000);
Bass.ChannelGetAttribute(activeStream, ChannelAttribute.Frequency, out initialFrequency);
}
public override async Task <(bool Changed, SongData song)> Execute(SongData song)
{
int stream = Bass.BASS_StreamCreateFile(song.FullFileName, 0, 0, BASSFlag.BASS_STREAM_DECODE);
if (stream == 0)
{
log.Error("BPM: Could not create stream for {0}. {1}", song.FullFileName, Bass.BASS_ErrorGetCode().ToString());
return(false, song);
}
_bpmProc = BpmProgressProc;
double len = Bass.BASS_ChannelBytes2Seconds(stream, Bass.BASS_ChannelGetLength(stream));
float bpm = BassFx.BASS_FX_BPM_DecodeGet(stream, 0.0, len, 0, BASSFXBpm.BASS_FX_BPM_BKGRND | BASSFXBpm.BASS_FX_FREESOURCE | BASSFXBpm.BASS_FX_BPM_MULT2,
_bpmProc, IntPtr.Zero);
song.BPM = Convert.ToInt32(bpm);
BassFx.BASS_FX_BPM_Free(stream);
return(true, song);
}
/// <summary>
/// Loads the File Channel with FX.
/// </summary>
protected override int OnLoad(string FileName)
{
var h = Bass.CreateStream(FileName, Flags: BassFlags.Decode);
if (h == 0)
{
return(0);
}
h = BassFx.TempoCreate(h, BassFlags.Decode | BassFlags.FxFreeSource);
if (h == 0)
{
return(0);
}
_tempoHandle = h;
return(BassFx.ReverseCreate(h, 2, BassFlags.FxFreeSource));
}
static void SaveReverse(string FilePath)
{
try
{
var sfd = ReverseSaveDialog.Value;
sfd.FileName = Path.GetFileNameWithoutExtension(FilePath) + ".Reverse";
if (!sfd.ShowDialog().Value)
{
return;
}
var fc = Bass.CreateStream(FilePath, Flags: BassFlags.Decode);
var rc = BassFx.ReverseCreate(fc, 2, BassFlags.Decode | BassFlags.FxFreeSource);
var wf = WaveFormat.FromChannel(fc);
var writer = new WaveFileWriter(new FileStream(sfd.FileName, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read), wf);
var blockLength = (int)Bass.ChannelSeconds2Bytes(rc, 2);
var buffer = new byte[blockLength];
var gch = GCHandle.Alloc(buffer, GCHandleType.Pinned);
while (Bass.ChannelIsActive(rc) == PlaybackState.Playing)
{
var bytesReceived = Bass.ChannelGetData(rc, gch.AddrOfPinnedObject(), blockLength);
writer.Write(buffer, bytesReceived);
}
gch.Free();
writer.Dispose();
Bass.StreamFree(rc);
MessageBox.Show("Saved");
}
catch (Exception e) { MessageBox.Show($"Failed\n\n{e}"); }
}
