/// <summary>
/// Shave off as much start up time as possible to play a sound. The majority of load time is already in `Load` but `Prepare` might help a bit more, or not at all. You can also call `Play()` without calling this first. The effectiveness depends on platform's audio library's approach :
/// [iOS] Assigns OpenAL audio buffer to a source. `NativeAudioPointer` then remembers this source index. The next `Play()` you call will immediately play this remembered source without caring what sound is in it instead of using a buffer index to get sound to pair with the next available source. This means if in between `Prepare()` and `Play()` you have played 32 sounds, the resulting sound will be something else as other sound has already put their buffer into the source you have remembered.
/// [Android] `write` a loaded audio byte array to any non-playing `AudioTrack` so that the next `Play()` does not require a `write` and can play right away. If all `AudioTrack` is playing the first `AudioTrack` will immediately stop to receive a new `byte[]` data.
/// </summary>
public void Prepare()
{
#if UNITY_IOS
prepareIndex = NativeAudio._PrepareAudio(NextIndex);
prepared = true;
#elif UNITY_ANDROID
NativeAudio.AndroidNativeAudio.CallStatic(NativeAudio.AndroidPrepareAudio, NextIndex);
#endif
}
/// <summary>
/// Shave off as much start up time as possible to play a sound. The majority of load time is already in `Load` but `Prepare` might help a bit more, or not at all. You can also call `Play()` without calling this first. The effectiveness depends on platform's audio library's approach :
/// [iOS] Assigns OpenAL audio buffer to a source. `NativeAudioPointer` then remembers this source index. The next `Play()` you call will immediately play this remembered source without caring what sound is in it instead of using a buffer index to get sound to pair with the next available source. This means if in between `Prepare()` and `Play()` you have played 16 sounds, the resulting sound will be something else as other sound has already put their buffer into the source you have remembered.
/// [Android] No effect as OpenSL ES play audio by pushing data into `SLAndroidSimpleBufferQueueItf`. All the prepare is already at the `Load()`.
/// </summary>
public void Prepare()
{
#if UNITY_IOS
prepareIndex = NativeAudio._PrepareAudio(NextIndex);
prepared = true;
#elif UNITY_ANDROID
//There is no possible preparation for OpenSL ES at the moment..
#endif
}