133 lines
2.8 KiB
C#
133 lines
2.8 KiB
C#
using System;
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namespace MoonWorks.Audio
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{
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// NOTE: all sounds played with a playlist must have the same audio format!
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public class SoundQueue : SoundInstance
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{
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public int NeedBufferThreshold = 0;
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private uint queuedBufferCount = 0;
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public delegate void OnBufferNeededFunc();
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public OnBufferNeededFunc OnBufferNeeded;
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private object StateLock = new object();
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public SoundQueue(AudioDevice device, ushort formatTag, ushort bitsPerSample, ushort blockAlign, ushort channels, uint samplesPerSecond) : base(device, formatTag, bitsPerSample, blockAlign, channels, samplesPerSecond)
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{
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device.AddSoundQueueReference(this);
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}
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public SoundQueue(AudioDevice device, StaticSound templateSound) : base(device, templateSound.FormatTag, templateSound.BitsPerSample, templateSound.BlockAlign, templateSound.Channels, templateSound.SamplesPerSecond)
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{
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device.AddSoundQueueReference(this);
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}
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public void Update()
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{
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lock (StateLock)
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{
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if (IsDisposed) { return; }
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if (State != SoundState.Playing) { return; }
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if (NeedBufferThreshold > 0)
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{
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FAudio.FAudioSourceVoice_GetState(
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Voice,
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out var state,
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FAudio.FAUDIO_VOICE_NOSAMPLESPLAYED
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);
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var queuedBufferCount = state.BuffersQueued;
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for (int i = 0; i < NeedBufferThreshold - queuedBufferCount; i += 1)
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{
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if (OnBufferNeeded != null)
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{
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OnBufferNeeded();
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}
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}
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}
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}
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}
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public void EnqueueSound(StaticSound sound)
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{
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#if DEBUG
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if (
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sound.FormatTag != Format.wFormatTag ||
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sound.BitsPerSample != Format.wBitsPerSample ||
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sound.Channels != Format.nChannels ||
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sound.SamplesPerSecond != Format.nSamplesPerSec
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)
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{
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Logger.LogWarn("Playlist audio format mismatch!");
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}
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#endif
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lock (StateLock)
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{
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FAudio.FAudioSourceVoice_SubmitSourceBuffer(
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Voice,
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ref sound.Handle,
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IntPtr.Zero
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);
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}
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}
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public override void Pause()
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{
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lock (StateLock)
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{
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if (State == SoundState.Playing)
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{
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FAudio.FAudioSourceVoice_Stop(Voice, 0, 0);
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State = SoundState.Paused;
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}
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}
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}
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public override void Play()
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{
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PlayUsingOperationSet(0);
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}
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public override void QueueSyncPlay()
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{
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PlayUsingOperationSet(1);
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}
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private void PlayUsingOperationSet(uint operationSet)
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{
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lock (StateLock)
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{
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if (State == SoundState.Playing)
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{
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return;
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}
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FAudio.FAudioSourceVoice_Start(Voice, 0, operationSet);
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State = SoundState.Playing;
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}
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}
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public override void Stop()
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{
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lock (StateLock)
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{
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FAudio.FAudioSourceVoice_ExitLoop(Voice, 0);
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State = SoundState.Stopped;
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}
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}
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public override void StopImmediate()
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{
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lock (StateLock)
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{
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FAudio.FAudioSourceVoice_Stop(Voice, 0, 0);
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FAudio.FAudioSourceVoice_FlushSourceBuffers(Voice);
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State = SoundState.Stopped;
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}
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}
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}
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}
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