/// <summary> /// Initializes a new instance of the BASSSoundEffect class. /// </summary> /// <param name="uv">The Ultraviolet context.</param> /// <param name="filename">The filename of the sample to load.</param> public BASSSoundEffect(UltravioletContext uv, String filename) : base(uv) { var fileSystemService = FileSystemService.Create(); var fileData = default(Byte[]); using (var stream = fileSystemService.OpenRead(filename)) { fileData = new Byte[stream.Length]; stream.Read(fileData, 0, fileData.Length); } sample = BASSNative.SampleLoad(fileData, 0, (UInt32)fileData.Length, UInt16.MaxValue, 0); if (!BASSUtil.IsValidHandle(sample)) { throw new BASSException(); } if (!BASSNative.SampleGetInfo(sample, out this.sampleInfo)) { throw new BASSException(); } this.data = Marshal.AllocHGlobal((int)sampleInfo.length); if (!BASSNative.SampleGetData(sample, this.data)) { throw new BASSException(); } }
/// <summary> /// Creates a BASS stream that represents the song. /// </summary> /// <param name="flags">The flags to apply to the stream that is created.</param> /// <returns>The handle to the BASS stream that was created.</returns> public UInt32 CreateInstance(UInt32 flags) { var fileSystemService = FileSystemService.Create(); var instance = fileSystemService.OpenRead(file); var instanceID = this.nextInstanceID++; instances.Add(instanceID, instance); var stream = 0u; try { var procs = new BASS_FILEPROCS(fnClose, fnLength, fnRead, fnSeek); unsafe { stream = BASSNative.StreamCreateFileUser(1, BASSNative.BASS_STREAM_DECODE, &procs, new IntPtr((int)instanceID)); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } } } catch { instance.Dispose(); instances.Remove(instanceID); throw; } return(stream); }
/// <inheritdoc/> public override void SlideVolume(Single volume, TimeSpan time) { Contract.EnsureNotDisposed(this, Disposed); EnsureChannelIsValid(); BASSUtil.SlideVolume(stream, volume, time); }
/// <inheritdoc/> public override void SlidePan(Single pan, TimeSpan time) { Contract.EnsureNotDisposed(this, Disposed); EnsureChannelIsValid(); BASSUtil.SlidePan(stream, pan, time); }
/// <inheritdoc/> public override void SlidePitch(Single pitch, TimeSpan time) { Contract.EnsureNotDisposed(this, Disposed); EnsureChannelIsValid(); PromoteToStream(0f); BASSUtil.SlidePitch(channel, pitch, time); }
/// <summary> /// Plays the specified song. /// </summary> private Boolean PlayInternal(Song song, Single volume, Single pitch, Single pan, TimeSpan?loopStart, TimeSpan?loopLength) { Ultraviolet.ValidateResource(song); Stop(); stream = ((BASSSong)song).CreateStream(BASSNative.BASS_STREAM_DECODE); stream = BASSFXNative.TempoCreate(stream, BASSNative.BASS_FX_FREESOURCE | BASSNative.BASS_STREAM_AUTOFREE); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } var autoloop = loopStart.HasValue && !loopLength.HasValue; var syncloop = loopStart.HasValue && !autoloop; BASSUtil.SetIsLooping(stream, autoloop); BASSUtil.SetVolume(stream, MathUtil.Clamp(volume, 0f, 1f)); BASSUtil.SetPitch(stream, MathUtil.Clamp(pitch, -1f, 1f)); BASSUtil.SetPan(stream, MathUtil.Clamp(pan, -1f, 1f)); if (loopStart > TimeSpan.Zero && loopLength <= TimeSpan.Zero) { throw new ArgumentException(nameof(loopLength)); } if (syncloop) { var loopStartInBytes = BASSNative.ChannelSeconds2Bytes(stream, loopStart.Value.TotalSeconds); var loopEndInBytes = BASSNative.ChannelSeconds2Bytes(stream, (loopStart + loopLength).Value.TotalSeconds); syncLoopDelegate = SyncLoop; syncLoop = BASSNative.ChannelSetSync(stream, BASSSync.SYNC_POS, loopEndInBytes, syncLoopDelegate, new IntPtr((Int32)loopStartInBytes)); if (syncLoop == 0) { throw new BASSException(); } } syncEndDelegate = SyncEnd; syncEnd = BASSNative.ChannelSetSync(stream, BASSSync.SYNC_END, 0, syncEndDelegate, IntPtr.Zero); if (syncEnd == 0) { throw new BASSException(); } if (!BASSNative.ChannelPlay(stream, true)) { throw new BASSException(); } OnStateChanged(); OnSongStarted(); return(true); }
/// <summary> /// Gets a value indicating whether the specified channel is looping. /// </summary> /// <param name="handle">The handle of the channel to evaluate.</param> /// <returns>true if the channel is looping; otherwise, false.</returns> public static Boolean GetIsLooping(UInt32 handle) { var flags = BASSNative.ChannelFlags(handle, 0, 0); if (!BASSUtil.IsValidValue(flags)) { throw new BASSException(); } return((flags & BASSNative.BASS_SAMPLE_LOOP) == BASSNative.BASS_SAMPLE_LOOP); }
/// <summary> /// Sets a value indicating whether the specified channel is looping. /// </summary> /// <param name="handle">The handle of the channel to modify.</param> /// <param name="looping">A value indicating whether the channel is looping.</param> public static void SetIsLooping(UInt32 handle, Boolean looping) { var flags = looping ? BASSNative.ChannelFlags(handle, BASSNative.BASS_SAMPLE_LOOP, BASSNative.BASS_SAMPLE_LOOP) : BASSNative.ChannelFlags(handle, 0, BASSNative.BASS_SAMPLE_LOOP); if (!BASSUtil.IsValidValue(flags)) { throw new BASSException(); } }
/// <summary> /// Sets the position of the specified channel. /// </summary> /// <param name="handle">The handle of the channel to modify.</param> /// <param name="position">The position in seconds to which to set the channel.</param> public static void SetPositionInSeconds(UInt32 handle, Double position) { var positionInBytes = BASSNative.ChannelSeconds2Bytes(handle, position); if (!BASSUtil.IsValidValue(positionInBytes)) { throw new BASSException(); } if (!BASSNative.ChannelSetPosition(handle, positionInBytes, 0)) { throw new BASSException(); } }
/// <inheritdoc/> public override void Play() { Contract.EnsureNotDisposed(this, Disposed); var channel = BASSNative.SampleGetChannel(sample, false); if (!BASSUtil.IsValidHandle(channel)) { throw new BASSException(); } if (!BASSNative.ChannelPlay(channel, true)) { throw new BASSException(); } }
/// <summary> /// Plays a sound effect. /// </summary> private Boolean PlayInternal(SoundEffect soundEffect, Single volume, Single pitch, Single pan, Boolean loop = false) { Contract.EnsureNotDisposed(this, Disposed); // Stop any sound that's already playing. Stop(); // Retrieve the sample data from the sound effect. Ultraviolet.ValidateResource(soundEffect); var bassfx = (BASSSoundEffect)soundEffect; var sample = bassfx.GetSampleData(out this.sampleData, out this.sampleInfo); // Get a channel on which to play the sample. channel = BASSNative.SampleGetChannel(sample, true); if (!BASSUtil.IsValidHandle(channel)) { var error = BASSNative.ErrorGetCode(); if (error == BASSNative.BASS_ERROR_NOCHAN) { return(false); } throw new BASSException(error); } // Set the channel's attributes. if (pitch == 0) { BASSUtil.SetIsLooping(channel, loop); BASSUtil.SetVolume(channel, MathUtil.Clamp(volume, 0f, 1f)); BASSUtil.SetPan(channel, MathUtil.Clamp(pan, -1f, 1f)); } else { PromoteToStream(volume, MathUtil.Clamp(pitch, -1f, 1f), pan, loop); } // Play the channel. if (!BASSNative.ChannelPlay(channel, true)) { throw new BASSException(); } this.playing = soundEffect; return(true); }
/// <inheritdoc/> public override void Play(Single volume, Single pitch, Single pan) { Contract.EnsureNotDisposed(this, Disposed); var channel = 0u; if (pitch == 0) { channel = BASSNative.SampleGetChannel(sample, false); if (!BASSUtil.IsValidHandle(channel)) { throw new BASSException(); } } else { var stream = BASSNative.StreamCreate(sampleInfo.freq, sampleInfo.chans, sampleInfo.flags | BASSNative.BASS_STREAM_DECODE, BASSNative.STREAMPROC_PUSH, IntPtr.Zero); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } var pushed = BASSNative.StreamPutData(stream, data, sampleInfo.length); if (!BASSUtil.IsValidValue(pushed)) { throw new BASSException(); } stream = BASSFXNative.TempoCreate(stream, BASSNative.BASS_FX_FREESOURCE | BASSNative.BASS_STREAM_AUTOFREE); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } channel = stream; BASSUtil.SetPitch(channel, MathUtil.Clamp(pitch, -1f, 1f)); } BASSUtil.SetVolume(channel, MathUtil.Clamp(volume, 0f, 1f)); BASSUtil.SetPan(channel, MathUtil.Clamp(pan, -1f, 1f)); if (!BASSNative.ChannelPlay(channel, false)) { throw new BASSException(); } }
/// <summary> /// Gets the duration of the specified channel in seconds. /// </summary> /// <param name="handle">The handle of the channel to evaluate.</param> /// <returns>The duration of the specified channel in seconds.</returns> public static Double GetDurationInSeconds(UInt32 handle) { var length = BASSNative.ChannelGetLength(handle, 0); if (!BASSUtil.IsValidValue(length)) { throw new BASSException(); } var seconds = BASSNative.ChannelBytes2Seconds(handle, length); if (seconds < 0) { throw new BASSException(); } return(seconds); }
/// <summary> /// Gets the position of the specified channel. /// </summary> /// <param name="handle">The handle of the channel to evaluate.</param> /// <returns>The current position of the channel in seconds.</returns> public static Double GetPositionInSeconds(UInt32 handle) { var position = BASSNative.ChannelGetPosition(handle, 0); if (!BASSUtil.IsValidValue(position)) { throw new BASSException(); } var seconds = BASSNative.ChannelBytes2Seconds(handle, position); if (seconds < 0) { throw new BASSException(); } return(seconds); }
/// <summary> /// Initializes a new instance of the BASSSong class. /// </summary> /// <param name="uv">The Ultraviolet context.</param> /// <param name="file">The path to the file from which to stream the song.</param> public BASSSong(UltravioletContext uv, String file) : base(uv) { Contract.RequireNotEmpty(file, nameof(file)); this.file = file; var stream = CreateStream(BASSNative.BASS_STREAM_DECODE); tags = new SongTagCollection(); ReadTagsFromStream(stream); var duration = BASSUtil.GetDurationInSeconds(stream); if (!BASSNative.StreamFree(stream)) { throw new BASSException(); } this.duration = TimeSpan.FromSeconds(duration); }
/// <summary> /// Creates a BASS stream that represents the song. /// </summary> /// <param name="flags">The flags to apply to the stream that is created.</param> /// <returns>The handle to the BASS stream that was created.</returns> internal UInt32 CreateStream(UInt32 flags) { if (FileSystemService.Source == null) { var stream = BASSNative.StreamCreateFile(file, flags); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } return(stream); } else { if (instanceManager == null) { instanceManager = new BASSSongInstanceManager(file); } return(instanceManager.CreateInstance(flags)); } }
/// <summary> /// Promotes the current channel to a stream. /// This is necessary if the pitch is shifted, because BASS_FX only works on streams. /// </summary> /// <param name="volume">The stream's initial volume.</param> /// <param name="pitch">The stream's initial pitch.</param> /// <param name="pan">The stream's initial pan.</param> /// <param name="loop">A value indicating whether to loop the stream.</param> private Boolean PromoteToStream(Single volume, Single pitch, Single pan, Boolean loop) { if (BASSUtil.IsValidHandle(stream)) { return(false); } // If the channel is currently playing, pause it. var playing = (State == PlaybackState.Playing); if (playing) { if (!BASSNative.ChannelPause(channel)) { throw new BASSException(); } } // Get the current position of the playing channel so that we can advance the stream to match. var streampos = (uint)BASSNative.ChannelGetPosition(channel, 0); if (!BASSUtil.IsValidValue(streampos)) { throw new BASSException(); } // Create a process for streaming data from our sample into the new stream. sampleDataPosition = (int)streampos; sampleDataLength = (int)sampleInfo.length; sampleDataStreamProc = new StreamProc((handle, buffer, length, user) => { if (sampleDataPosition >= sampleDataLength) { sampleDataPosition = 0; } var byteCount = Math.Min(length, (uint)sampleDataLength - streampos); unsafe { byte *pBufferSrc = (byte *)(sampleData + sampleDataPosition).ToPointer(); byte *pBufferDst = (byte *)(buffer).ToPointer(); for (int i = 0; i < byteCount; i++) { *pBufferDst++ = *pBufferSrc++; } } sampleDataPosition += (int)byteCount; return(streampos >= sampleDataLength ? byteCount | BASSNative.BASS_STREAMPROC_END : byteCount); }); // Create a decoding stream based on our sample channel. stream = BASSNative.StreamCreate(sampleInfo.freq, sampleInfo.chans, sampleInfo.flags | BASSNative.BASS_STREAM_DECODE, sampleDataStreamProc, IntPtr.Zero); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } // Create an FX stream to shift the sound effect's pitch. stream = BASSFXNative.TempoCreate(stream, BASSNative.BASS_FX_FREESOURCE); if (!BASSUtil.IsValidHandle(stream)) { throw new BASSException(); } // Set the new stream's attributes. BASSUtil.SetVolume(stream, volume); BASSUtil.SetPitch(stream, pitch); BASSUtil.SetPan(stream, pan); BASSUtil.SetIsLooping(stream, loop); // Stop the old channel and switch to the stream. if (!BASSNative.ChannelStop(channel)) { throw new BASSException(); } channel = stream; // If we were previously playing, play the stream. if (playing) { if (!BASSNative.ChannelPlay(channel, false)) { throw new BASSException(); } } promoted = true; return(true); }