public override void SetData(short[] data, int offset)
{
if (null == Buffer)
{
Format = new AVAudioFormat(AVAudioCommonFormat.PCMFloat32, (double)Frequency, (uint)(ChannelFormat == AudioChannelFormat.Mono ? 1 : 2), true);
Buffer = new AVAudioPcmBuffer(Format, (uint)SampleCount);
Buffer.FrameLength = (uint)(SampleCount / sizeof(float));
}
unsafe
{
try
{
float *f = (float *)Marshal.ReadIntPtr(Buffer.FloatChannelData, 0 * IntPtr.Size);
for (int i = 0; i < SampleCount; i++)
{
f[i] = data[i] / 32767.0f;
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
}
public void AllocateRenderResources(uint inMaxFrames)
{
MaxFrames = inMaxFrames;
pcmBuffer = new AVAudioPcmBuffer(Bus.Format, MaxFrames);
OriginalAudioBufferList = pcmBuffer.AudioBufferList;
MutableAudioBufferList = pcmBuffer.MutableAudioBufferList;
}
private void onDataAvailable(AVAudioPcmBuffer buffer, AVAudioTime when)
{
AudioBuffer audioBuffer = buffer.AudioBufferList[0];
byte[] data = new byte[audioBuffer.DataByteSize];
Marshal.Copy(audioBuffer.Data, data, 0, audioBuffer.DataByteSize);
encode(data, 0, data.Length);
}
public void Init(AVAudioFormat defaultFormat, uint maxChannels)
{
MaxFrames = 0;
pcmBuffer = null;
OriginalAudioBufferList = null;
MutableAudioBufferList = null;
NSError error;
Bus = new AUAudioUnitBus(defaultFormat, out error)
{
MaximumChannelCount = maxChannels
};
}
void Init()
{
FrequenciesByOctave = new FrequencyDictionary();
for (int i = 0; i < InFlightAudioBuffers; i++)
{
var buffer = new AVAudioPcmBuffer(AudioFormat, SamplesPerBuffer);
AudioBuffers.Add(buffer);
}
PlayerNode = new AVAudioPlayerNode {
Volume = .8f
};
AudioEngine.AttachNode(PlayerNode);
AudioEngine.Connect(PlayerNode, AudioEngine.MainMixerNode, AudioFormat);
AudioEngine.StartAndReturnError(out var error);
}
///<Summary>
/// Begin playback or resume if paused
///</Summary>
public void Play()
{
if (player == null)
{
return;
}
if (!_hasPlayedFirst)
{
NSError er;
var audioFileBuffer = new AVAudioPcmBuffer(audioFile.ProcessingFormat, (uint)audioFile.Length);
audioFile.ReadIntoBuffer(audioFileBuffer, out er);
player.ScheduleBuffer(audioFileBuffer, null, AVAudioPlayerNodeBufferOptions.Loops, null);
_hasPlayedFirst = true;
}
player.PlayAtTime(new AVAudioTime(0));
}
public void onDecodedData(float[] data)
{
if (!running)
{
return;
}
if (audioPlayer != null)
{
AVAudioPcmBuffer buffer = new AVAudioPcmBuffer(inputAudioFormat, (uint)data.Length);
IntPtr int_data = Marshal.AllocHGlobal(data.Length * sizeof(float));
Marshal.Copy(data, 0, int_data, data.Length);
buffer.AudioBufferList.SetData(0, int_data, data.Length);
buffer.FrameLength = (uint)data.Length;
audioPlayer.ScheduleBuffer(buffer, () => {
Marshal.FreeHGlobal(int_data);
buffer.Dispose();
GC.Collect();
GC.WaitForPendingFinalizers();
});
}
}
public IOSAudioClip(int samples, AudioChannelFormat channelFormat, int frequency) : base(samples, channelFormat, frequency)
{
Format = new AVAudioFormat((double)frequency, (uint)(channelFormat == AudioChannelFormat.Mono ? 1 : 2));
Buffer = new AVAudioPcmBuffer(Format, (uint)samples);
}
public void DeallocateRenderResources()
{
pcmBuffer = null;
OriginalAudioBufferList = null;
MutableAudioBufferList = null;
}