// Checks whether the audio and video file formats of the song are supported.
// Returns true iff the audio file of the SongMeta exists and is supported.
private bool CheckSupportedMediaFormats(SongMeta songMeta)
{
// Check video format.
// Video is optional.
if (!songMeta.Video.IsNullOrEmpty())
{
if (!ApplicationUtils.IsSupportedVideoFormat(Path.GetExtension(songMeta.Video)))
{
Debug.LogWarning("Unsupported video format: " + songMeta.Video);
songMeta.Video = "";
}
else if (!File.Exists(SongMetaUtils.GetAbsoluteSongVideoPath(songMeta)))
{
Debug.LogWarning("Video file does not exist: " + SongMetaUtils.GetAbsoluteSongVideoPath(songMeta));
songMeta.Video = "";
}
}
// Check audio format.
// Audio is mandatory. Without working audio file, the song cannot be played.
if (!ApplicationUtils.IsSupportedAudioFormat(Path.GetExtension(songMeta.Mp3)))
{
Debug.LogWarning("Unsupported audio format: " + songMeta.Mp3);
return(false);
}
else if (!File.Exists(SongMetaUtils.GetAbsoluteSongFilePath(songMeta)))
{
Debug.LogWarning("Audio file does not exist: " + SongMetaUtils.GetAbsoluteSongFilePath(songMeta));
return(false);
}
return(true);
}
public void Init(SongMeta songMeta)
{
this.SongMeta = songMeta;
string songPath = SongMetaUtils.GetAbsoluteSongFilePath(songMeta);
AudioClip audioClip = AudioManager.Instance.GetAudioClip(songPath);
if (audioClip != null)
{
audioPlayer.clip = audioClip;
DurationOfSongInMillis = 1000.0 * audioClip.samples / audioClip.frequency;
}
else
{
DurationOfSongInMillis = 0;
}
}
public void CheckAudioAndStartSingScene()
{
if (SelectedSong != null)
{
// Check that the audio file exists
string audioPath = SongMetaUtils.GetAbsoluteSongFilePath(SelectedSong);
if (!File.Exists(audioPath))
{
UiManager.Instance.CreateWarningDialog("Audio Error", "Audio file does not exist: " + audioPath);
return;
}
// Check that the used audio format can be loaded.
songAudioPlayer.Init(SelectedSong);
if (!songAudioPlayer.HasAudioClip)
{
UiManager.Instance.CreateWarningDialog("Audio Error", "Audio file could not be loaded.\nPlease use a supported format.");
return;
}
StartSingScene(SelectedSong);
}
}
void Update()
{
// Automatically stop playback after a given threshold (e.g. only play the selected notes)
if (songAudioPlayer.IsPlaying &&
StopPlaybackAfterPositionInSongInMillis > 0 &&
songAudioPlayer.PositionInSongInMillis > StopPlaybackAfterPositionInSongInMillis)
{
songAudioPlayer.PauseAudio();
StopPlaybackAfterPositionInSongInMillis = 0;
}
// Create the audio waveform image if not done yet.
if (!audioWaveFormInitialized && songAudioPlayer.HasAudioClip && songAudioPlayer.AudioClip.samples > 0)
{
using (new DisposableStopwatch($"Created audio waveform in <millis> ms"))
{
// For drawing the waveform, the AudioClip must not be streamed. All data must have been fully loaded.
AudioClip audioClip = AudioManager.Instance.GetAudioClip(SongMetaUtils.GetAbsoluteSongFilePath(SongMeta), false);
audioWaveFormInitialized = true;
audioWaveFormVisualizer.DrawWaveFormMinAndMaxValues(audioClip);
}
}
}
