private void Awake()
{
// First we run through some Android specifics. Android requires explicit permission requests before the audio context can be created.
// Beware that failing these will not necessarily report permission errors, but rather device creation errors.
// Additionally, the library prefers the audio in communication mode, so we switch that too.
if (Application.platform == RuntimePlatform.Android)
{
if (!Permission.HasUserAuthorizedPermission(Permission.Microphone))
{
Permission.RequestUserPermission(Permission.Microphone);
}
try
{
AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject activity = unityPlayer.GetStatic <AndroidJavaObject>("currentActivity");
AndroidJavaObject audioManager = activity.Call <AndroidJavaObject>("getSystemService", "audio");
int mode1 = audioManager.Call <Int32>("getMode");
audioManager.Call("setMode", 3); // 3 is Communication Mode
int mode2 = audioManager.Call <Int32>("getMode");
Debug.Log($"Android Audio Mode changed from {mode1} to {mode2}");
}
catch (Exception e)
{
Debug.Log(e.ToString());
}
}
threads = WebRtcThreads.Acquire();
// the default audio device module must be created on the worker thread
adm = AudioDeviceModuleFactory.CreateDefault(threads.threads[1]); // by convention 1 is the worker (see call below)
// adm is now initialised
factory = PeerConnectionFactory.Create(
threads.threads[0],
threads.threads[1],
threads.threads[2], // This is the main signalling thread
adm,
AudioEncoderFactory.CreateBuiltin(),
AudioDecoderFactory.CreateBuiltin(),
VideoEncoderFactory.CreateBuiltin(),
VideoDecoderFactory.CreateBuiltin(),
null,
null);
playoutHelper = new AudioDeviceHelper(PlayoutDevices, ChangePlayoutDevice);
recordingHelper = new AudioDeviceHelper(RecordingDevices, ChangeRecordingDevice);
pcs = new List <WebRtcPeerConnection>();
}
static unsafe Waveform GetWaveform(string path)
{
Waveform waveform;
if (waveforms.TryGetValue(path, out waveform))
{
return(waveform);
}
waveform = new Waveform();
var textureWidth = 256;
var textureHeight = 64;
using (var fs = AssetBundle.Current.OpenFile(path + ".ogg")) {
using (var decoder = AudioDecoderFactory.CreateDecoder(fs)) {
var stereo = decoder.GetFormat() == AudioFormat.Stereo16;
while (true)
{
var maxPartLength = textureWidth / (AnimationUtils.FramesPerSecond * pixelsPerFrame);
var maxPartSamples = (int)(maxPartLength * decoder.GetFrequency());
var maxBlocks = maxPartSamples / decoder.GetBlockSize() * (stereo ? 4 : 2);
var samples = Marshal.AllocHGlobal(maxBlocks * decoder.GetBlockSize());
try {
var numBlocks = decoder.ReadBlocks(samples, 0, maxBlocks);
if (numBlocks == 0)
{
break;
}
var numSamples = numBlocks * decoder.GetBlockSize() / (stereo ? 4 : 2);
var pixels = new Color4[textureWidth * textureHeight];
int width = numSamples * textureWidth / maxPartSamples;
if (stereo)
{
BuildMonoWaveform((short *)samples, 2, numSamples, pixels, textureWidth, width, 0, textureHeight / 2 - 1);
BuildMonoWaveform(((short *)samples + 1), 2, numSamples, pixels, textureWidth, width, textureHeight / 2 + 1, textureHeight - 1);
}
else
{
BuildMonoWaveform((short *)samples, 1, numSamples, pixels, textureWidth, width, 0, textureHeight - 1);
}
var texture = new Texture2D();
texture.LoadImage(pixels, textureWidth, textureHeight);
waveform.Parts.Add(new Waveform.Part {
Texture = texture, Width = width
});
} finally {
Marshal.FreeHGlobal(samples);
}
}
}
}
waveforms.Add(path, waveform);
return(waveform);
}