381 lines
13 KiB
C#
381 lines
13 KiB
C#
using System.Collections.Generic;
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using System.Diagnostics;
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using Microsoft.Xna.Framework;
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using OpenTK.Audio.OpenAL;
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using OpenTK.Audio;
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using System;
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namespace Subsurface.Sounds
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{
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static class SoundManager
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{
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public const int DefaultSourceCount = 16;
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private static List<int> alSources = new List<int>();
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private static int[] alBuffers = new int[DefaultSourceCount];
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private static int lowpassFilterId;
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//private static float overrideLowPassGain;
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//public static float OverrideLowPassGain
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//{
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// get { return overrideLowPassGain; }
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// set { overrideLowPassGain = MathHelper.Clamp(overrideLowPassGain, 0.0f, 1.0f); }
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//}
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static AudioContext AC;
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public static OggStreamer oggStreamer;
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public static OggStream oggStream;
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public static void Init()
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{
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AC = new AudioContext();
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for (int i = 0 ; i < DefaultSourceCount; i++)
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{
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alSources.Add(OpenTK.Audio.OpenAL.AL.GenSource());
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}
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if (ALHelper.Efx.IsInitialized)
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{
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lowpassFilterId = ALHelper.Efx.GenFilter();
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//alFilters.Add(alFilterId);
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ALHelper.Efx.Filter(lowpassFilterId, OpenTK.Audio.OpenAL.EfxFilteri.FilterType, (int)OpenTK.Audio.OpenAL.EfxFilterType.Lowpass);
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LowPassHFGain = 1.0f;
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}
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}
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//public SoundManager(int bufferCount = DefaultSourceCount)
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//{
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// Stopwatch sw = new Stopwatch();
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// sw.Start();
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// alSourceId = AL.GenSource();
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// //AL.Source(alSourceId, ALSourcei.Buffer, alBufferId);
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// Volume = 1;
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// if (ALHelper.Efx.IsInitialized)
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// {
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// alFilterId = ALHelper.Efx.GenFilter();
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// ALHelper.Efx.Filter(alFilterId, EfxFilteri.FilterType, (int)EfxFilterType.Lowpass);
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// ALHelper.Efx.Filter(alFilterId, EfxFilterf.LowpassGain, 1);
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// LowPassHFGain = 1;
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// }
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// sw.Stop();
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// System.Diagnostics.Debug.WriteLine("oggsource: "+sw.ElapsedMilliseconds);
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//}
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// public static int Play(Sound sound, float volume = 1.0f)
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// {
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// return Play(sound, volume, new Vector2(0.0f, 0.0f));
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//}
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public static int Play(Sound sound, float volume = 1.0f)
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{
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return Play(sound, Vector2.Zero, volume, 0.0f);
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//for (int i = 2; i < DefaultSourceCount; i++)
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//{
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// AL.SourceStop(alSources[i]);
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// AL.Source(alSources[i], ALSourceb.Looping, false);
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// System.Diagnostics.Debug.WriteLine(i + ": " + AL.GetSourceState(alSources[i]));
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// System.Diagnostics.Debug.WriteLine(AL.GetSourceType(alSources[i]));
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//}
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//for (int i = 1; i < DefaultSourceCount; i++)
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//{
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// //find a source that's free to use (not playing or paused)
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// if (AL.GetSourceState(alSources[i]) == ALSourceState.Playing
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// || AL.GetSourceState(alSources[i]) == ALSourceState.Paused) continue;
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// //if (position!=Vector2.Zero)
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// // position /= 1000.0f;
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// alBuffers[i]=sound.AlBufferId;
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// AL.Source(alSources[i], ALSourceb.Looping, false);
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// AL.Source(alSources[i], ALSource3f.Position, 0.0f, 0.0f, 0.0f);
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// AL.Source(alSources[i], ALSourcei.Buffer, sound.AlBufferId);
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// AL.Source(alSources[i], ALSourcef.Gain, volume);
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// //AL.Source(alSources[i], ALSource3f.Position, position.X, position.Y, 0.0f);
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// AL.SourcePlay(alSources[i]);
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// //sound.sourceIndex = i;
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// return i;
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//}
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//return -1;
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}
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public static int Play(Sound sound, Vector2 position, float volume = 1.0f, float lowPassGain = 0.0f, bool loop=false)
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{
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//for (int i = 2; i < DefaultSourceCount; i++)
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//{
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// AL.SourceStop(alSources[i]);
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// AL.Source(alSources[i], ALSourceb.Looping, false);
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// System.Diagnostics.Debug.WriteLine(i + ": " + AL.GetSourceState(alSources[i]));
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// System.Diagnostics.Debug.WriteLine(AL.GetSourceType(alSources[i]));
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//}
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for (int i = 1; i < DefaultSourceCount; i++)
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{
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//find a source that's free to use (not playing or paused)
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if (OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Playing
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|| OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) == OpenTK.Audio.OpenAL.ALSourceState.Paused) continue;
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//if (position!=Vector2.Zero)
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// position /= 1000.0f;
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alBuffers[i] = sound.AlBufferId;
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OpenTK.Audio.OpenAL.AL.Source(alSources[i], OpenTK.Audio.OpenAL.ALSourceb.Looping, loop);
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OpenTK.Audio.OpenAL.AL.Source(alSources[i], OpenTK.Audio.OpenAL.ALSourcei.Buffer, sound.AlBufferId);
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UpdateSoundPosition(i, position, volume);
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//AL.Source(alSources[i], ALSource3f.Position, position.X, position.Y, 0.0f);
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OpenTK.Audio.OpenAL.AL.SourcePlay(alSources[i]);
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//sound.sourceIndex = i;
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return i;
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}
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return -1;
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}
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public static int Loop(Sound sound, int sourceIndex, float volume = 1.0f)
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{
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return Loop(sound,sourceIndex, Vector2.Zero, volume);
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}
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public static int Loop(Sound sound, int sourceIndex, Vector2 position, float volume = 1.0f)
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{
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if (!MathUtils.IsValid(volume))
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{
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volume = 0.0f;
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}
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if (sourceIndex<1)
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{
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sourceIndex = Play(sound, position, volume, 0.0f, true);
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//if (sourceIndex>0)
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//{
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// AL.Source(alSources[sourceIndex], ALSourceb.Looping, true);
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// AL.Source(alSources[sourceIndex], ALSourcef.Gain, volume);
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//}
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ALHelper.Check();
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return sourceIndex;
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}
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else
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{
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UpdateSoundPosition(sourceIndex, position, volume);
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//position /= 1000.0f;
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//OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSource3f.Position, position.X, position.Y, 0.0f);
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AL.Source(alSources[sourceIndex], ALSourceb.Looping, true);
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//AL.Source(alSources[sourceIndex], ALSourcef.Gain, volume);
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ALHelper.Check();
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return sourceIndex;
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}
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}
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//public static int Loop(int sourceIndex, float volume = 1.0f)
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//{
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// if (sourceIndex > 0 && alSources[sourceIndex]>0)
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// {
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// ALSourceState state = AL.GetSourceState(alSources[sourceIndex]);
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// ALHelper.Check();
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// if (state == ALSourceState.Playing) return sourceIndex;
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// }
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// int newSourceIndex = Play(sound, volume);
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// AL.Source(alSources[sourceIndex], ALSourceb.Looping, true);
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// return sourceIndex;
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//}
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public static void Pause(int sourceIndex)
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{
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if (AL.GetSourceState(alSources[sourceIndex]) != ALSourceState.Playing)
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return;
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AL.SourcePause(alSources[sourceIndex]);
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ALHelper.Check();
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}
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public static void Resume(int sourceIndex)
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{
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if (AL.GetSourceState(alSources[sourceIndex]) != ALSourceState.Paused)
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return;
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AL.SourcePlay(alSources[sourceIndex]);
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ALHelper.Check();
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}
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public static void Stop(int sourceIndex)
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{
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if (sourceIndex < 1) return;
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var state = AL.GetSourceState(alSources[sourceIndex]);
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if (state == ALSourceState.Playing || state == ALSourceState.Paused)
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{
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AL.SourceStop(alSources[sourceIndex]);
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AL.Source(alSources[sourceIndex], ALSourceb.Looping, false);
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}
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}
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public static bool IsPlaying(int sourceIndex)
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{
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if (sourceIndex < 1 || sourceIndex>alSources.Count-1) return false;
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var state = AL.GetSourceState(alSources[sourceIndex]);
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return (state == ALSourceState.Playing);
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}
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public static void Volume(int sourceIndex, float volume)
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{
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AL.Source(alSources[sourceIndex], ALSourcef.Gain, volume);
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ALHelper.Check();
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}
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//int alFilterId;
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static float lowPassHfGain;
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public static float LowPassHFGain
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{
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get { return lowPassHfGain; }
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set
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{
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if (ALHelper.Efx.IsInitialized)
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{
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lowPassHfGain = value;
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for (int i = 0; i < DefaultSourceCount; i++)
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{
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//find a source that's free to use (not playing or paused)
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if (OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]) != OpenTK.Audio.OpenAL.ALSourceState.Playing
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&& OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i])!= OpenTK.Audio.OpenAL.ALSourceState.Paused) continue;
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ALHelper.Efx.Filter(lowpassFilterId, OpenTK.Audio.OpenAL.EfxFilterf.LowpassGainHF, lowPassHfGain = value);
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ALHelper.Efx.BindFilterToSource(alSources[i], lowpassFilterId);
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ALHelper.Check();
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}
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}
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}
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}
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//float volume;
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//public float Volume
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//{
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// get { return volume; }
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// set
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// {
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// AL.Source(alSourceId, ALSourcef.Gain, volume = value);
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// ALHelper.Check();
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// }
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//}
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public static void UpdateSoundPosition(int sourceIndex, Vector2 position, float baseVolume = 1.0f)
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{
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if (sourceIndex < 1) return;
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if (!MathUtils.IsValid(position))
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{
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position = Vector2.Zero;
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}
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//Resume(sourceIndex);
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position/= 1000.0f;
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OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSourcef.Gain, baseVolume);
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OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSource3f.Position, position.X, position.Y, 0.0f);
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float lowPassGain = lowPassHfGain / Math.Max(position.Length() * 5.0f, 1.0f);
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ALHelper.Efx.Filter(lowpassFilterId, OpenTK.Audio.OpenAL.EfxFilterf.LowpassGainHF, lowPassGain);
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ALHelper.Efx.BindFilterToSource(alSources[sourceIndex], lowpassFilterId);
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ALHelper.Check();
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}
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public static OggStream StartStream(string file, float volume = 1.0f)
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{
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if (oggStreamer == null)
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oggStreamer = new OggStreamer();
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oggStream = new OggStream(file);
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oggStreamer.AddStream(oggStream);
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oggStream.Volume = volume;
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oggStream.Play();
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return oggStream;
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}
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public static void StopStream()
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{
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if (oggStream!=null) oggStream.Stop();
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}
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public static void ClearAlSource(int bufferId)
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{
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for (int i = 1; i < DefaultSourceCount; i++)
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{
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if (alBuffers[i] == bufferId)
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{
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OpenTK.Audio.OpenAL.AL.Source(alSources[i], OpenTK.Audio.OpenAL.ALSourcei.Buffer, 0);
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}
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}
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}
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public static void Dispose()
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{
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if (ALHelper.Efx.IsInitialized)
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ALHelper.Efx.DeleteFilter(lowpassFilterId);
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for (int i = 0; i < DefaultSourceCount; i++)
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{
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var state = OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]);
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if (state == OpenTK.Audio.OpenAL.ALSourceState.Playing || state == OpenTK.Audio.OpenAL.ALSourceState.Paused)
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Stop(i);
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OpenTK.Audio.OpenAL.AL.DeleteSource(alSources[i]);
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ALHelper.Check();
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}
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if (oggStream!=null)
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{
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oggStream.Stop();
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oggStream.Dispose();
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}
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if (oggStreamer != null)
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oggStreamer.Dispose();
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}
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}
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}
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