public static AudioClip CreateAudioClip(string name, PCMAudioBuffer audioBuffer)
{
var sampleData = audioBuffer.ToFloatArray();
var audioClip = AudioClip.Create(name, sampleData.Length, audioBuffer.channelCount, audioBuffer.samplingRate, false);
audioClip.SetData(sampleData, 0);
return(audioClip);
}
/// <summary>
/// Create a Unity audio clip for an audio stream.
/// </summary>
private static AudioClip CreateStreamingAudioClip(string name, MP3StreamReader audioStream)
{
PCMAudioBuffer streamBuffer = new PCMAudioBuffer(audioStream.channelCount, audioStream.bitDepth, audioStream.samplingRate, 8192);
int bufferAudioClipSampleFrameCount = audioStream.samplingRate;
return(AudioClip.Create(name, bufferAudioClipSampleFrameCount, audioStream.channelCount, audioStream.samplingRate, true, delegate(float[] samples)
{
int samplesReturned = FillUnityStreamBuffer(samples, streamBuffer, audioStream);
if (audioStream.isOpen && audioStream.isDoneStreaming)
{
audioStream.Close();
}
}));
}
/// <summary>
/// Streams audio into a floating point sample buffer.
/// </summary>
/// <param name="unityBuffer"></param>
/// <param name="intermediateBuffer">A PCM sample buffer to act as an intermediary between the raw audio stream and Unity.</param>
/// <param name="audioStream"></param>
/// <returns>Returns the number of samples that were read from the stream.</returns>
public static int FillUnityStreamBuffer(float[] unityBuffer, PCMAudioBuffer intermediateBuffer, MP3StreamReader audioStream)
{
if (audioStream.isDoneStreaming)
{
// Fill the Unity sample buffer with zeros.
Array.Clear(unityBuffer, 0, unityBuffer.Length);
return(0);
}
int totalSampleFramesToRead = unityBuffer.Length / audioStream.channelCount;
int sampleFramesRead = 0;
while (sampleFramesRead < totalSampleFramesToRead)
{
// Read some sample frames.
int sampleFramesLeftToRead = totalSampleFramesToRead - sampleFramesRead;
int sampleFramesReturned = audioStream.ReadSampleFrames(intermediateBuffer.data, 0, Math.Min(sampleFramesLeftToRead, intermediateBuffer.sampleFrameCount));
if (sampleFramesReturned > 0)
{
// Convert the read samples to floats copy them to the output buffer.
intermediateBuffer.ToFloatArray(unityBuffer, sampleFramesRead, sampleFramesReturned);
sampleFramesRead += sampleFramesReturned;
}
else
{
// Fill the rest of the Unity sample buffer with zeros.
int samplesRead = sampleFramesRead * audioStream.channelCount;
Array.Clear(unityBuffer, samplesRead, unityBuffer.Length - samplesRead);
break;
}
}
return(sampleFramesRead * audioStream.channelCount);
}
public static GameObject Play2DAudioClip(PCMAudioBuffer audioBuffer)
{
var audioClip = CreateAudioClip("tmp2DAudioClip", audioBuffer);
return(Play2DAudioClip(audioClip));
}
void Start()
{
streamBuffer = new PCMAudioBuffer(audioStream.channelCount, audioStream.bitDepth, audioStream.samplingRate, 8192);
UnitySampleRate = AudioSettings.outputSampleRate;
}
