// Audio duration.
public void getAllAudioChannelData(out float[] data, out double time, out int samplesPerChannel)
{
if (!isAllAudioChEnabled)
{
print(LOG_TAG + " this function only works for isAllAudioEnabled == true.");
data = null;
time = 0;
samplesPerChannel = 0;
return;
}
var dataPtr = new IntPtr();
var lengthPerChannel = 0;
double audioNativeTime = DecoderNative.nativeGetAudioData(decoderID, ref dataPtr, ref lengthPerChannel);
float[] buff = null;
if (lengthPerChannel > 0)
{
buff = new float[lengthPerChannel * audioChannels];
Marshal.Copy(dataPtr, buff, 0, buff.Length);
DecoderNative.nativeFreeAudioData(decoderID);
}
data = buff;
time = audioNativeTime;
samplesPerChannel = lengthPerChannel;
}
private void pullAudioData(object sender, DoWorkEventArgs e)
{
var dataPtr = IntPtr.Zero; // Pointer to get audio data from native.
var tempBuff = new float[0]; // Buffer to copy audio data from dataPtr to audioDataBuff.
var audioFrameLength = 0;
double lastTime = -1.0f; // Avoid to schedule the same audio data set.
audioDataBuff = new List <float>();
while (decoderState >= DecoderNative.DecoderState.START)
{
if (decoderState != DecoderNative.DecoderState.SEEK_FRAME)
{
double audioNativeTime =
DecoderNative.nativeGetAudioData(decoderID, ref dataPtr, ref audioFrameLength);
if (0 < audioNativeTime && lastTime != audioNativeTime &&
decoderState != DecoderNative.DecoderState.SEEK_FRAME &&
audioFrameLength != 0)
{
if (firstAudioFrameTime == -1.0)
{
firstAudioFrameTime = audioNativeTime;
}
lastTime = audioNativeTime;
audioFrameLength *= audioChannels;
if (tempBuff.Length != audioFrameLength)
{
tempBuff = new float[audioFrameLength];
}
Marshal.Copy(dataPtr, tempBuff, 0, audioFrameLength);
lock (_lock)
{
audioDataBuff.AddRange(tempBuff);
}
}
if (audioNativeTime != -1.0)
{
DecoderNative.nativeFreeAudioData(decoderID);
}
Thread.Sleep(2);
}
}
lock (_lock)
{
audioDataBuff.Clear();
audioDataBuff = null;
}
}
