using System;

using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace champ
{
    public static class FMODCEWrapper
    {
        // Use a stream handler
        public static IntPtr GetStream(string s)
        {
            // Get the filename in bytes
            byte[] sbytes = System.Text.Encoding.Default.GetBytes(s + null);
            //also need a handler for the framework that we will use
            GCHandle handler = GCHandle.Alloc(sbytes, GCHandleType.Pinned);
            if (Environment.Version.Major == 1) return new
            IntPtr(handler.AddrOfPinnedObject().ToInt32() + 4);
            else return handler.AddrOfPinnedObject();
        }
        // Start FMOD and initialize values
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Init", SetLastError =
        true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern bool Init(int mixrate, int
        maxsoftwarechannels, int flags);
        /// Get the length of a stream
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_GetLength",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
         
        CallingConvention.Winapi)]
        public static extern int GetStreamLength(IntPtr fstream);
        // Need to know the current position of the stream
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_GetPosition",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]


        public static extern UInt32 GetStreamPosition(IntPtr fstream);
        // Open the stream that we get
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_Open",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern IntPtr OpenStream(IntPtr data, int mode, int
        offset, int length);

        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_Close",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern IntPtr CloseStream(IntPtr fstream);

        // Start playing from the stream that we get
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_Play",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern int PlayStream(int channel, IntPtr fstream);
        // Set current possition of the stream
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_SetPosition",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern bool SetStreamPosition(IntPtr fstream, UInt32
        position);
        // Stop playing the sounds/stream
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Stream_Stop",
        SetLastError = true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern bool StopStream(IntPtr fstream);
         
        // Need to release whatever resources are used and close FMOD when no     longer needed
        [DllImport("fmodce.dll", EntryPoint = "FSOUND_Close", SetLastError =
        true, CharSet = CharSet.Unicode, CallingConvention =
        CallingConvention.Winapi)]
        public static extern void Close();
 
    }
}

        
IntPtr soundStream;  
IntPtr soundHandler; 
string AUDIO_FILE = @"***.mp3";
FMODCEWrapper.Init(44100, 16, 0);
soundStream = FMODCEWrapper.GetStream(AUDIO_FILE);
soundHandler = FMODCEWrapper.OpenStream(soundStream, 0x100, 0, 0);
FMODCEWrapper.PlayStream(0, soundHandler); 
FMODCEWrapper.CloseStream(soundHandler); //이거 안해주면 메모리릭 발생-_-;    
FMODCEWrapper.Close();