[DllImport("fccore")] public static extern Bool fcFlacAddAudioSamples(fcFlacContext ctx, float[] samples, int num_samples);
[DllImport("fccore")] public static extern Bool fcFlacAddAudioFrame(fcFlacContext ctx, float[] samples, int num_samples, double timestamp = -1.0);
[DllImport("fccore")] public static extern void fcFlacAddOutputStream(fcFlacContext ctx, fcStream stream);
[DllImport("fccore")] private static extern void fcFlacDestroyContext(fcFlacContext ctx);