/// <summary>
/// Constructor
/// </summary>
/// <param name="soundEffect">Sound effect</param>
/// <param name="sourceVoice">Source voice</param>
/// <param name="emitterDescription">Emitter description</param>
/// <param name="listenerDescription">Listener description</param>
/// <param name="destroyWhenFinished">Sets whether the instance must be disposed after it's finished</param>
internal GameAudioEffectInstance(
GameAudioEffect soundEffect,
SourceVoice sourceVoice,
GameAudioSourceDescription emitterDescription,
GameAudioSourceDescription listenerDescription,
bool destroyWhenFinished)
{
Effect = soundEffect;
voice = sourceVoice;
paused = false;
IsLooped = false;
volume = 1.0f;
pan = 0.0f;
pitch = 0.0f;
outputMatrix = null;
Emitter = new GameAudioEmitter(emitterDescription);
Listener = new GameAudioListener(listenerDescription);
voice.BufferStart += SourceVoice_BufferStart;
voice.BufferEnd += SourceVoice_BufferEnd;
voice.LoopEnd += SourceVoice_LoopEnd;
this.destroyWhenFinished = destroyWhenFinished;
}
/// <summary>
/// Gets an effect from de audio
/// </summary>
/// <param name="name">Effect name</param>
/// <param name="fileName">File name</param>
/// <returns>Returns the new created effect</returns>
internal GameAudioEffect GetEffect(string name, string fileName)
{
if (effects.ContainsKey(name))
{
return(effects[name]);
}
var effect = GameAudioEffect.Load(this, name, fileName);
effects.Add(name, effect);
return(effect);
}
/// <summary>
/// Loads a file in the audio buffer
/// </summary>
/// <param name="gameAudio">Game audio</param>
/// <param name="name">Effect name</param>
/// <param name="fileName">File name</param>
internal static GameAudioEffect Load(GameAudio gameAudio, string name, string fileName)
{
GameAudioEffect effect = new GameAudioEffect(gameAudio, name);
using (var stream = new SoundStream(File.OpenRead(fileName)))
{
var buffer = stream.ToDataStream();
effect.WaveFormat = stream.Format;
effect.DecodedPacketsInfo = stream.DecodedPacketsInfo;
effect.AudioBuffer = new AudioBuffer
{
Stream = buffer,
AudioBytes = (int)buffer.Length,
Flags = BufferFlags.EndOfStream
};
effect.LoopedAudioBuffer = new AudioBuffer
{
Stream = buffer,
AudioBytes = (int)buffer.Length,
Flags = BufferFlags.EndOfStream,
LoopCount = AudioBuffer.LoopInfinite,
};
effect.Duration = TimeSpan.Zero;
if (stream.Format.SampleRate > 0)
{
var samplesDuration = GetSamplesDuration(
stream.Format,
buffer.Length,
stream.DecodedPacketsInfo);
var milliseconds = samplesDuration * 1000 / stream.Format.SampleRate;
effect.Duration = TimeSpan.FromMilliseconds(milliseconds);
}
}
return(effect);
}