/// <summary>
/// Воспроизведение
/// </summary>
/// <param name="parIsLooped">Зациклить воспроизведение?</param>
public void Play(bool parIsLooped)
{
AL.Source(AlSource, ALSourceb.Looping, parIsLooped);
AL.SourcePlay(AlSource);
OpenAlManager.CheckForError(
$"Cannot start playback: {AlSource} - {_linkedAssetData.ActualAssetMetadata.FilePath}");
}
/// <summary>
/// Стандартный конструктор
/// </summary>
/// <param name="parAssetMetadata">Метаданные об ассете</param>
/// <param name="parBinaryData">Аудио данные в бинарном формате</param>
public AssetDataOpenTkWaveSound(AssetMetadataOpenTk parAssetMetadata, byte[] parBinaryData) : base(parAssetMetadata)
{
OpenAlManager.GetInstance();
if (Path.GetExtension(parAssetMetadata.FilePath) == ".ogg")
{
AudioFormatProvider = new AudioFormatProviderOgg();
}
else
{
AudioFormatProvider = new AudioFormatProviderWav(parBinaryData);
}
AudioFormatProvider.InitAudioData(this);
}
/// <summary>
/// Инициализация и первоначальная загрузка аудио данных
/// </summary>
/// <param name="parLinkedOpenTkSound">Аудио данные OpenTK</param>
public void InitAudioData(AssetDataOpenTkWaveSound parOpenTkWaveSound)
{
_linkedAssetData = parOpenTkWaveSound;
AlBuffer = AL.GenBuffer();
AlSource = AL.GenSource();
OpenAlManager.CheckForError("AL loading not ready...");
using (MemoryStream ms = new MemoryStream(AudioBinaryData))
{
using (BinaryReader br = new BinaryReader(ms))
{
// проверка заголовка RIFF
string signature = new string(br.ReadChars(4));
if (signature != "RIFF")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
int riffChunckSize = br.ReadInt32();
string format = new string(br.ReadChars(4));
if (format != "WAVE")
{
throw new NotSupportedException("Specified stream is not a wave file.");
}
// проверка заголовка WAVE
string formatSignature = new string(br.ReadChars(4));
if (formatSignature != "fmt ")
{
throw new NotSupportedException("Specified wave file is not supported.");
}
int formatChunkSize = br.ReadInt32();
int audioFormat = br.ReadInt16();
int numChannels = br.ReadInt16();
int sampleRate = br.ReadInt32();
int byteRate = br.ReadInt32();
int blockAlign = br.ReadInt16();
int bitsPerSample = br.ReadInt16();
string dataSignature = new string(br.ReadChars(4));
if (dataSignature != "data")
{
throw new NotSupportedException("Specified wave file is not supported.");
}
int dataChunkSize = br.ReadInt32();
Channels = numChannels;
BitsPerSample = bitsPerSample;
SampleRate = sampleRate;
AudioBinaryData = br.ReadBytes((int)dataChunkSize);
}
}
Console.WriteLine(
$"Binary data length: {AudioBinaryData.Length}, Sample rate: {SampleRate}, {Environment.NewLine}BitsPerSample: {BitsPerSample}");
AL.BufferData(AlBuffer, GetSoundFormat(Channels, BitsPerSample), AudioBinaryData, AudioBinaryData.Length,
SampleRate);
if (!OpenAlManager.CheckForError($"Loading error: {_linkedAssetData.ActualAssetMetadata.FilePath}"))
{
}
AL.Source(AlSource, ALSourcei.Buffer, AlBuffer);
if (!OpenAlManager.CheckForError($"Loading error: {_linkedAssetData.ActualAssetMetadata.FilePath}"))
{
Console.WriteLine($"AL: Audio data {AlSource}:{AlBuffer} created in memory");
}
}
/// <summary>
/// Сбросить воспроизведение
/// </summary>
public void Reset()
{
AL.SourceRewind(AlSource);
OpenAlManager.CheckForError(
$"Cannot reset playback: {AlSource} - {_linkedAssetData.ActualAssetMetadata.FilePath}");
}
/// <summary>
/// Остановить воспроизведение
/// </summary>
public void Stop()
{
AL.SourceStop(AlSource);
OpenAlManager.CheckForError(
$"Cannot stop playback: {AlSource} - {_linkedAssetData.ActualAssetMetadata.FilePath}");
}
