using UnityEngine;
using System.Collections;
using System;
using System.Runtime.InteropServices;
using FMOD;
using FMODUnity;

public class clip_to_sound : MonoSingleton<clip_to_sound>
{
    public AudioClip audioclip;
    Channel channel;
    private ChannelGroup channel_Group;

    public void Start()
    {
        float[] samples = new float[audioclip.samples * audioclip.channels];
        audioclip.GetData(samples, 0);

        uint lenbytes = (uint)(audioclip.samples * audioclip.channels * sizeof(float));

        CREATESOUNDEXINFO soundinfo = new CREATESOUNDEXINFO();
        soundinfo.cbsize = Marshal.SizeOf(typeof(CREATESOUNDEXINFO));
        soundinfo.length = lenbytes;
        soundinfo.format = SOUND_FORMAT.PCMFLOAT;
        soundinfo.defaultfrequency = audioclip.frequency;
        soundinfo.numchannels = audioclip.channels;

        RESULT result;
        Sound sound;
        result = RuntimeManager.CoreSystem.createSound("abc", MODE.OPENUSER, ref soundinfo, out sound);

        IntPtr ptr1, ptr2;
        uint len1, len2;
        result = sound.@lock(0, lenbytes, out ptr1, out ptr2, out len1, out len2);
        Marshal.Copy(samples, 0, ptr1, (int)(len1 / sizeof(float)));
        if (len2 > 0)
        {
            Marshal.Copy(samples, (int)(len1 / sizeof(float)), ptr2, (int)(len2 / sizeof(float)));
        }
        result = sound.unlock(ptr1, ptr2, len1, len2);
        result = sound.setMode(MODE.LOOP_NORMAL);

        result = RuntimeManager.CoreSystem.playSound(sound, channel_Group, false, out channel);
        channel.setPaused(true);
        UnityEngine.Debug.LogError("RESULT => " + result);
    }
    
    public FMOD.Sound ConvertAudioClip(AudioClip clip)
    {
        RESULT result1;
        Factory.System_Create(out FMOD.System fmodSystem);
        result1 = fmodSystem.init(4, INITFLAGS.NORMAL, System.IntPtr.Zero);
        UnityEngine.Debug.LogError("RESULT => " + result1);

        float[] samples = new float[clip.samples * clip.channels];
        clip.GetData(samples, 0);
        uint lenbytes = (uint)(clip.samples * clip.channels * sizeof(float));

        FMOD.CREATESOUNDEXINFO soundinfo = new FMOD.CREATESOUNDEXINFO();
        soundinfo.length = lenbytes;
        soundinfo.format = FMOD.SOUND_FORMAT.PCMFLOAT;
        soundinfo.defaultfrequency = clip.frequency;
        soundinfo.numchannels = clip.channels;
        soundinfo.cbsize = Marshal.SizeOf(typeof(CREATESOUNDEXINFO));
        FMOD.RESULT result;
        FMOD.Sound sound = new FMOD.Sound();
        result = fmodSystem.createSound(soundinfo.fileuserread_internal , FMOD.MODE.OPENUSER, ref soundinfo, out sound);
        System.IntPtr ptr1 = System.IntPtr.Zero, ptr2 = System.IntPtr.Zero;
        uint len1 = (uint)0, len2 = (uint)0;
        result = sound.@lock(0, lenbytes, out ptr1, out ptr2, out len1, out len2);
        Marshal.Copy(samples, 0, ptr1, (int)(len1 / sizeof(float)));
        if (len2 > 0)
        {
            Marshal.Copy(samples, (int)(len1 / sizeof(float)), ptr2, (int)(len2 / sizeof(float)));
        }
        result = sound.unlock(ptr1, ptr2, len1, len2);
        result = sound.setMode(FMOD.MODE.LOOP_NORMAL);
        result = fmodSystem.playSound(sound, channel_Group, false, out channel);        
        return sound;
    }

}