public static AudioClipStream LoadClip(AudioClip clip)
{
if (string.IsNullOrEmpty(clip.FilePath))
{
return(null);
}
Log.Debug($"Loading audioClip {clip.FilePath} ...");
if (!File.Exists(clip.FilePath))
{
Log.Error($"AudioClip file '{clip.FilePath}' does not exist.");
return(null);
}
var streamHandle = Bass.CreateStream(clip.FilePath, 0, 0, BassFlags.Prescan);
Bass.ChannelGetAttribute(streamHandle, ChannelAttribute.Frequency, out var defaultPlaybackFrequency);
Bass.ChannelSetAttribute(streamHandle, ChannelAttribute.Volume, AudioEngine.IsMuted ? 0 : 1);
var bytes = Bass.ChannelGetLength(streamHandle);
if (bytes < 0)
{
Log.Error($"Failed to initialize audio playback for {clip.FilePath}.");
}
var duration = (float)Bass.ChannelBytes2Seconds(streamHandle, bytes);
var stream = new AudioClipStream()
{
AudioClip = clip,
StreamHandle = streamHandle,
DefaultPlaybackFrequency = defaultPlaybackFrequency,
Duration = duration,
};
clip.LengthInSeconds = duration;
return(stream);
}
public static void CompleteFrame(Playback playback)
{
if (!_bassInitialized)
{
Bass.Free();
Bass.Init();
_bassInitialized = true;
}
AudioAnalysis.CompleteFrame();
// Create new streams
foreach (var(audioClip, time) in _updatedClipTimes)
{
if (_clipPlaybacks.TryGetValue(audioClip.Id, out var clip))
{
clip.TargetTime = time;
}
else
{
var audioClipStream = AudioClipStream.LoadClip(audioClip);
if (audioClipStream != null)
{
_clipPlaybacks[audioClip.Id] = audioClipStream;
}
}
}
List <Guid> obsoleteIds = new();
var playbackSpeedChanged = Math.Abs(_lastPlaybackSpeed - playback.PlaybackSpeed) > 0.001f;
_lastPlaybackSpeed = playback.PlaybackSpeed;
var handledMainSoundtrack = false;
foreach (var(audioClipId, clipStream) in _clipPlaybacks)
{
clipStream.IsInUse = _updatedClipTimes.ContainsKey(clipStream.AudioClip);
if (!clipStream.IsInUse)
{
obsoleteIds.Add(audioClipId);
}
else
{
if (playbackSpeedChanged)
{
clipStream.UpdatePlaybackSpeed(playback.PlaybackSpeed);
}
if (!handledMainSoundtrack && clipStream.AudioClip.IsSoundtrack)
{
UpdateFftBuffer(clipStream.StreamHandle);
handledMainSoundtrack = true;
}
clipStream.UpdateTime();
}
}
foreach (var id in obsoleteIds)
{
_clipPlaybacks[id].Disable();
_clipPlaybacks.Remove(id);
}
_updatedClipTimes.Clear();
}