rfmod/

fmod_sys.rs

/*
* Rust-FMOD - Copyright (c) 2014 Gomez Guillaume.
*
* The Original software, FmodEx library, is provided by FIRELIGHT TECHNOLOGIES.
*
* This software is provided 'as-is', without any express or implied warranty.
* In no event will the authors be held liable for any damages arising from
* the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim
*    that you wrote the original software. If you use this software in a product,
*    an acknowledgment in the product documentation would be appreciated but is
*    not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
*    misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*/

use libc::{c_void, c_uint, c_int, c_char, c_short};
use ffi;
use types::*;
use sound;
use sound::Sound;
use sound_group;
use std::mem;
use channel_group;
use channel;
use dsp;
use dsp::Dsp;
use vector;
use reverb_properties;
use geometry;
use reverb;
use dsp_connection;
use std::default::Default;
use callbacks::*;
use std;
use file;
use libc::FILE;
use c_vec::CVec;
use std::ffi::CString;

fn get_saved_sys_callback<'r>() -> &'r mut SysCallback {
    static mut CALLBACK : SysCallback = SysCallback {
            file_open: None,
            file_close: None,
            file_read: None,
            file_seek: None
        };

    unsafe { &mut CALLBACK }
}

struct SysCallback {
    file_open: FileOpenCallback,
    file_close: FileCloseCallback,
    file_read: FileReadCallback,
    file_seek: FileSeekCallback
}

impl SysCallback {
    fn new() -> SysCallback {
        SysCallback {
            file_open: None,
            file_close: None,
            file_read: None,
            file_seek: None
        }
    }
}

extern "C" fn file_open_callback(name: *mut c_char, unicode: c_int, file_size: *mut c_uint,
                                 handle: *mut *mut c_void,
                                 user_data: *mut *mut c_void) -> ::Status {
    let tmp = get_saved_sys_callback();

    match tmp.file_open {
        Some(s) => {
            let t_name = if name.is_null() {
                String::new()
            } else {
                let l = ffi::strlen(name);

                unsafe { String::from_raw_parts(name as *mut u8, l, l) }
            };
            match s(t_name.as_ref(), unicode) {
                Some((f, s)) => {
                    unsafe {
                        *file_size = f.get_file_size() as u32;
                        *handle = file::get_ffi(&f) as *mut c_void;
                        *user_data = match s {
                            Some(mut d) => std::mem::transmute(&mut d),
                            None => ::std::ptr::null_mut()
                        };
                    }
                   ::Status::Ok
                }
                None => {
                    unsafe {
                        *file_size = 0u32;
                        *handle = std::ptr::null_mut();
                        *user_data = std::ptr::null_mut();
                    }
                    ::Status::FileNotFound
                }
            }
        },
        None => {
            unsafe {
                *file_size = 0u32;
                *handle = std::ptr::null_mut();
                *user_data = std::ptr::null_mut();
            }
            ::Status::Ok
        }
    }
}

extern "C" fn file_close_callback(handle: *mut c_void, user_data: *mut c_void) -> ::Status {
    let tmp = get_saved_sys_callback();

    match tmp.file_close {
        Some(s) => {
            unsafe {
                s(&mut file::from_ffi(handle as *mut FILE), if user_data.is_null() {
                    None
                } else {
                    Some(std::mem::transmute(user_data))
                });
            }
            ::Status::Ok
        }
        None => ::Status::Ok
    }
}

extern "C" fn file_read_callback(handle: *mut c_void, buffer: *mut c_void, size_bytes: c_uint,
                                 bytes_read: *mut c_uint, user_data: *mut c_void) -> ::Status {
    let tmp = get_saved_sys_callback();

    match tmp.file_read {
        Some(s) => {
            unsafe {
                let mut data_vec : CVec<u8> = CVec::new(buffer as *mut u8, size_bytes as usize);

                let read_bytes = s(&mut file::from_ffi(handle as *mut FILE), data_vec.as_mut(),
                                   size_bytes, if user_data.is_null() {
                    None
                } else {
                    Some(std::mem::transmute(user_data))
                });
                *bytes_read = read_bytes as u32;
                if read_bytes < size_bytes as usize {
                    ::Status::FileEOF
                } else {
                   ::Status::Ok
                }
            }
        }
        None => ::Status::Ok
    }
}

extern "C" fn file_seek_callback(handle: *mut c_void, pos: c_uint,
                                 user_data: *mut c_void) -> ::Status {
    let tmp = get_saved_sys_callback();

    match tmp.file_seek {
        Some(s) => {
            unsafe {
                s(&mut file::from_ffi(handle as *mut FILE), pos, if user_data.is_null() {
                    None
                } else {
                    Some(std::mem::transmute(user_data))
                });
            }
            ::Status::Ok
        }
        None => ::Status::Ok
    }
}

extern "C" fn pcm_read_callback(sound: *mut ffi::FMOD_SOUND, data: *mut c_void,
                                data_len: c_uint) -> ::Status {
    unsafe {
        if !sound.is_null() {
            let mut tmp = ::std::ptr::null_mut();

            ffi::FMOD_Sound_GetUserData(sound, &mut tmp);
            if !tmp.is_null() {
                let callbacks : &mut ffi::SoundData = std::mem::transmute(tmp);

                match callbacks.pcm_read {
                    Some(p) => {
                        let max = data_len as isize >> 2;
                        let mut data_vec = CVec::new(data as *mut c_short, max as usize * 2);

                        let ret = p(&ffi::FFI::wrap(sound), data_vec.as_mut());
                        ret
                    },
                    None => ::Status::Ok
                }
            } else {
               ::Status::Ok
            }
        } else {
            ::Status::Ok
        }
    }
}

extern "C" fn non_block_callback(sound: *mut ffi::FMOD_SOUND, result: ::Status) -> ::Status {
    unsafe {
        if !sound.is_null() {
            let mut tmp = ::std::ptr::null_mut();

            ffi::FMOD_Sound_GetUserData(sound, &mut tmp);
            if !tmp.is_null() {
                let callbacks : &mut ffi::SoundData = ::std::mem::transmute(tmp);

                match callbacks.non_block {
                    Some(p) => p(&ffi::FFI::wrap(sound), result),
                    None => ::Status::Ok
                }
            } else {
               ::Status::Ok
            }
        } else {
            ::Status::Ok
        }
    }
}

extern "C" fn pcm_set_pos_callback(sound: *mut ffi::FMOD_SOUND, sub_sound: c_int, position: c_uint,
                                   postype: ffi::FMOD_TIMEUNIT) -> ::Status {
    unsafe {
        if !sound.is_null() {
            let mut tmp = ::std::ptr::null_mut();

            ffi::FMOD_Sound_GetUserData(sound, &mut tmp);
            if !tmp.is_null() {
                let callbacks : &mut ffi::SoundData = ::std::mem::transmute(tmp);

                match callbacks.pcm_set_pos {
                    Some(p) => p(&ffi::FFI::wrap(sound), sub_sound, position, TimeUnit(postype)),
                    None => ::Status::Ok
                }
            } else {
               ::Status::Ok
            }
        } else {
            ::Status::Ok
        }
    }
}

/// Structure describing a globally unique identifier.
pub struct Guid
{
    /// Specifies the first 8 hexadecimal digits of the GUID
    pub data1: u32,
    /// Specifies the first group of 4 hexadecimal digits.
    pub data2: u16,
    /// Specifies the second group of 4 hexadecimal digits.
    pub data3: u16,
    /// Array of 8 bytes. The first 2 bytes contain the third group of 4 hexadecimal digits. The
    /// remaining 6 bytes contain the final 12 hexadecimal digits.
    pub data4: [u8; 8]
}

impl Default for Guid {
    fn default() -> Guid {
        Guid {
            data1: 0u32,
            data2: 0u16,
            data3: 0u16,
            data4: [0u8; 8]
        }
    }
}

/// Structure used to store user data for file callback
pub struct UserData {
    user_data: *mut c_void
}

impl UserData {
    pub fn set_user_data<'r, T>(&'r mut self, user_data: &'r mut T) {
        unsafe { self.user_data = std::mem::transmute(user_data) }
    }

    pub fn get_user_data<'r, T>(&self) -> Option<&'r mut T> {
        if self.user_data.is_null() {
            None
        } else {
            Some(unsafe { std::mem::transmute(self.user_data) })
        }
    }
}

impl Default for UserData {
    fn default() -> UserData {
        UserData {
            user_data: ::std::ptr::null_mut()
        }
    }
}

/// Wrapper for arguments of
/// [`Sys::set_software_format`](struct.Sys.html#method.set_software_format) and
/// [`Sys::get_software_format`](struct.Sys.html#method.get_software_format).
pub struct SoftwareFormat
{
    pub sample_rate        : i32,
    pub format             : ::SoundFormat,
    pub num_output_channels: i32,
    pub max_input_channels : i32,
    pub resample_method    : ::DspResampler,
    pub bits               : i32
}

impl Default for SoftwareFormat {
    fn default() -> SoftwareFormat {
        SoftwareFormat {
            sample_rate: 0i32,
            format: ::SoundFormat::None,
            num_output_channels: 0i32,
            max_input_channels: 0i32,
            resample_method: ::DspResampler::NoInterp,
            bits: 0i32
        }
    }
}

/// Settings for advanced features like configuring memory and cpu usage for the
/// FMOD_CREATECOMPRESSEDSAMPLE feature.
pub struct AdvancedSettings {
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. Mpeg
    /// codecs consume 21,684 bytes per instance and this number will determine how many mpeg
    /// channels can be played simultaneously. Default = 32.
    pub max_MPEG_codecs               : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. ADPCM
    /// codecs consume 2,136 bytes per instance and this number will determine how many ADPCM
    /// channels can be played simultaneously. Default = 32.
    pub max_ADPCM_codecs              : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. XMA
    /// codecs consume 14,836 bytes per instance and this number will determine how many XMA
    /// channels can be played simultaneously. Default = 32.
    pub max_XMA_codecs                : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. CELT
    /// codecs consume 11,500 bytes per instance and this number will determine how many CELT
    /// channels can be played simultaneously. Default = 32.
    pub max_CELT_codecs               : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. Vorbis
    /// codecs consume 12,000 bytes per instance and this number will determine how many Vorbis
    /// channels can be played simultaneously. Default = 32.
    pub max_VORBIS_codecs             : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_CREATECOMPRESSEDSAMPLE only. AT9
    /// codecs consume 8,720 bytes per instance and this number will determine how many AT9
    /// channels can be played simultaneously. Default = 32.
    pub max_AT9_codecs                : i32,
    /// [r/w] Optional. Specify 0 to ignore. For use with PS3 only. PCM codecs consume 12,672 bytes
    /// per instance and this number will determine how many streams and PCM voices can be played
    /// simultaneously. Default = 16.
    pub max_PCM_codecs                : i32,
    /// [r/w] Optional. Specify 0 to ignore. Number of channels available on the ASIO device.
    pub ASIO_num_channels             : i32,
    /// [r/w] Optional. Specify 0 to ignore. Pointer to an array of strings (number of entries
    /// defined by ASIONumChannels) with ASIO channel names.
    pub ASIO_channel_list             : Vec<String>,
    /// [r/w] Optional. Specify 0 to ignore. Pointer to a list of speakers that the ASIO channels
    /// map to. This can be called after [`Sys::init`](doc/rfmod/struct.Sys.html#method.init) to
    /// remap ASIO output.
    pub ASIO_speaker_list             : Vec<::Speaker>,
    /// [r/w] Optional. Specify 0 to ignore. The max number of 3d reverb DSP's in the system. (NOTE:
    /// CURRENTLY DISABLED / UNUSED)
    pub max_3D_reverb_DSPs            : i32,
    /// [r/w] Optional. For use with FMOD_INIT_HRTF_LOWPASS. The angle range (0-360) of a 3D sound
    /// in relation to the listener, at which the HRTF function begins to have an effect. 0 = in
    /// front of the listener. 180 = from 90 degrees to the left of the listener to 90 degrees to
    /// the right. 360 = behind the listener. Default = 180.0.
    pub HRTF_min_angle                : f32,
    /// [r/w] Optional. For use with FMOD_INIT_HRTF_LOWPASS. The angle range (0-360) of a 3D sound
    /// in relation to the listener, at which the HRTF function has maximum effect. 0 = front of the
    /// listener. 180 = from 90 degrees to the left of the listener to 90 degrees to the right. 360
    /// = behind the listener. Default = 360.0.
    pub HRTF_max_angle                : f32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_INIT_HRTF_LOWPASS. The cutoff
    /// frequency of the HRTF's lowpass filter function when at maximum effect. (i.e. at
    /// HRTFMaxAngle). Default = 4000.0.
    pub HRTF_freq                     : f32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_INIT_VOL0_BECOMES_VIRTUAL. If this
    /// flag is used, and the volume is 0.0, then the sound will become virtual. Use this value to
    /// raise the threshold to a different point where a sound goes virtual.
    pub vol0_virtual_vol              : f32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD Event system only. Specifies the
    /// number of slots available for simultaneous non blocking loads, across all threads. Default =
    /// 32.
    pub event_queue_size              : i32,
    /// [r/w] Optional. Specify 0 to ignore. For streams. This determines the default size of the
    /// double buffer (in milliseconds) that a stream uses. Default = 400ms
    pub default_decode_buffer_size    : u32,
    /// [r/w] Optional. Specify 0 to ignore. Gives fmod's logging system a path/filename. Normally
    /// the log is placed in the same directory as the executable and called fmod.log. When using
    /// [`Sys::get_advanced_settings`](doc/rfmod/struct.Sys.html#method.get_advanced_settings),
    /// provide at least 256 bytes of memory to copy into.
    pub debug_log_filename            : String,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_INIT_ENABLE_PROFILE. Specify the port
    /// to listen on for connections by the
    /// profiler application.
    pub profile_port                  : u16,
    /// [r/w] Optional. Specify 0 to ignore. The maximum time in miliseconds it takes for a channel
    /// to fade to the new level when its
    /// occlusion changes.
    pub geometry_max_fade_time        : u32,
    /// [r/w] Optional. Specify 0 to ignore. Tells
    /// [`Sys::init`](doc/rfmod/struct.Sys.html#method.init) to allocate a pool of wavedata/spectrum
    /// buffers to prevent memory fragmentation, any additional buffers will be allocated normally.
    pub max_spectrum_wave_data_buffers: u32,
    /// [r/w] Optional. Specify 0 to ignore. The delay the music system should allow for loading a
    /// sample from disk (in milliseconds). Default = 400 ms.
    pub music_system_cache_delay      : u32,
    /// [r/w] Optional. Specify 0 to ignore. For use with FMOD_INIT_DISTANCE_FILTERING. The default
    /// center frequency in Hz for the distance filtering effect. Default = 1500.0.
    pub distance_filter_center_freq   : f32,
    /// [r/w] Optional. Specify 0 to ignore. Specify the stack size for the FMOD Stream thread in
    /// bytes. Useful for custom codecs that use excess stack. Default 49,152 (48kb)
    pub stack_size_stream             : u32,
    /// [r/w] Optional. Specify 0 to ignore. Specify the stack size for the FMOD_NONBLOCKING loading
    /// thread. Useful for custom codecs that use excess stack. Default 65,536 (64kb)
    pub stack_size_non_blocking       : u32,
    /// [r/w] Optional. Specify 0 to ignore. Specify the stack size for the FMOD mixer thread.
    /// Useful for custom dsps that use excess stack. Default 49,152 (48kb)
    pub stack_size_mixer              : u32,
}

impl Default for AdvancedSettings {
    fn default() -> AdvancedSettings {
        AdvancedSettings {
            max_MPEG_codecs: 32i32,
            max_ADPCM_codecs: 32i32,
            max_XMA_codecs: 32i32,
            max_CELT_codecs: 32i32,
            max_VORBIS_codecs: 32i32,
            max_AT9_codecs: 32i32,
            max_PCM_codecs: 16i32,
            ASIO_num_channels: 0i32,
            ASIO_channel_list: Vec::new(),
            ASIO_speaker_list: Vec::new(),
            max_3D_reverb_DSPs: 0i32,
            HRTF_min_angle: 180f32,
            HRTF_max_angle: 360f32,
            HRTF_freq: 4000f32,
            vol0_virtual_vol: 0f32,
            event_queue_size: 32i32,
            default_decode_buffer_size: 400u32,
            debug_log_filename: String::new(),
            profile_port: 0u16,
            geometry_max_fade_time: 0u32,
            max_spectrum_wave_data_buffers: 0u32,
            music_system_cache_delay: 400u32,
            distance_filter_center_freq: 1500f32,
            stack_size_stream: 49152u32,
            stack_size_non_blocking: 65536u32,
            stack_size_mixer: 49152u32,
        }
    }
}

/// Use this structure with [`Sys::create_sound`](struct.Sys.html#method.create_sound) when more
/// control is needed over loading. The possible reasons to use this with
/// [`Sys::create_sound`](struct.Sys.html#method.create_sound) are:
///
/// * Loading a file from memory.
/// * Loading a file from within another larger (possibly wad/pak) file, by giving the loader an
///   offset and length.
/// * To create a user created / non file based sound.
/// * To specify a starting subsound to seek to within a multi-sample sounds (ie FSB/DLS/SF2) when
///   created as a stream.
/// * To specify which subsounds to load for multi-sample sounds (ie FSB/DLS/SF2) so that memory is
///   saved and only a subset is actually loaded/read from disk.
/// * To specify 'piggyback' read and seek callbacks for capture of sound data as fmod reads and
///   decodes it. Useful for ripping decoded PCM data from sounds as they are loaded / played.
/// * To specify a MIDI DLS/SF2 sample set file to load when opening a MIDI file.
///
/// See below on what members to fill for each of the above types of sound you want to create.
pub struct CreateSoundexInfo {
    /// [w] Optional. Specify 0 to ignore. Size in bytes of file to load, or sound to create (in
    /// this case only if FMOD_OPENUSER is used). Required if loading from memory. If 0 is
    /// specified, then it will use the size of the file (unless loading from memory then an error
    /// will be returned).
    pub length                 : u32,
    /// [w] Optional. Specify 0 to ignore. Offset from start of the file to start loading from. This
    /// is useful for loading files from inside big data files.
    pub file_offset            : u32,
    /// [w] Optional. Specify 0 to ignore. Number of channels in a sound mandatory if FMOD_OPENUSER
    /// or FMOD_OPENRAW is used.
    pub num_channels           : i32,
    /// [w] Optional. Specify 0 to ignore. Default frequency of sound in a sound mandatory if
    /// FMOD_OPENUSER or FMOD_OPENRAW is used. Other formats use the frequency determined by the
    /// file format.
    pub default_frequency      : i32,
    /// [w] Optional. Specify 0 or ::SoundFormatNone to ignore. Format of the sound mandatory if
    /// FMOD_OPENUSER or FMOD_OPENRAW is used. Other formats use the format determined by the file
    /// format.
    pub format                 : ::SoundFormat,
    /// [w] Optional. Specify 0 to ignore. For streams. This determines the size of the double
    /// buffer (in PCM samples) that a stream uses. Use this for user created streams if you want to
    /// determine the size of the callback buffer passed to you. Specify 0 to use FMOD's default
    /// size which is currently equivalent to 400ms of the sound format created/loaded.
    pub decode_buffer_size     : u32,
    /// [w] Optional. Specify 0 to ignore. In a multi-sample file format such as .FSB/.DLS/.SF2,
    /// specify the initial subsound to seek to, only if FMOD_CREATESTREAM is used.
    pub initial_subsound       : i32,
    /// [w] Optional. Specify 0 to ignore or have no subsounds. In a sound created with
    /// FMOD_OPENUSER, specify the number of subsounds that are accessable with
    /// [`Sound::get_sub_sound`](doc/rfmod/struct.Sound.html#method.get_sub_sound). If not created
    /// with FMOD_OPENUSER, this will limit the number of subsounds loaded within a multi-subsound
    /// file. If using FSB, then if FMOD_CREATESOUNDEXINFO::inclusionlist is used, this will shuffle
    /// subsounds down so that there are not any gaps. It will mean that the indices of the sounds
    /// will be different.
    pub num_subsounds          : i32,
    /// [w] Optional. Specify 0 to ignore. In a multi-sample format such as .FSB/.DLS/.SF2 it may be
    /// desirable to specify only a subset of sounds to be loaded out of the whole file. This is an
    /// array of subsound indices to load into memory when created.
    pub inclusion_list         : Vec<i32>,
    /// [w] Optional. Specify 0 to ignore. Callback to 'piggyback' on FMOD's read functions and
    /// accept or even write PCM data while FMOD is opening the sound. Used for user sounds created
    /// with FMOD_OPENUSER or for capturing decoded data as FMOD reads it.
    pub pcm_read_callback      : SoundPcmReadCallback,
    /// [w] Optional. Specify 0 to ignore. Callback for when the user calls a seeking function such
    /// as [`Channel::set_time`](doc/rfmod/struct.Channel.html#method.set_time) or
    /// [`Channel::set_position`](doc/rfmod/struct.Channel.html#method.set_position) within a
    /// multi-sample sound, and for when it is opened.
    pub pcm_set_pos_callback   : SoundPcmSetPosCallback,
    /// [w] Optional. Specify 0 to ignore. Callback for successful completion, or error while
    /// loading a sound that used the FMOD_NONBLOCKING flag. Also called duing seeking, when
    /// setPosition is called or a stream is restarted.
    pub non_block_callback     : SoundNonBlockCallback,
    /// [w] Optional. Specify 0 to ignore. Filename for a DLS or SF2 sample set when loading a MIDI
    /// file. If not specified, on Windows it will attempt to open /windows/system32/drivers/gm.dls
    /// or /windows/system32/drivers/etc/gm.dls, on Mac it will attempt to load
    /// /System/Library/Components/CoreAudio.component/Contents/Resources/gs_instruments.dls,
    /// otherwise the MIDI will fail to open. Current DLS support is for level 1 of the
    /// specification.
    pub dls_name               : String,
    dls_name_c                 : CString,
    /// [w] Optional. Specify 0 to ignore. Key for encrypted FSB file. Without this key an encrypted
    /// FSB file will not load.
    pub encryption_key         : String,
    encryption_key_c           : CString,
    /// [w] Optional. Specify 0 to ignore. For sequenced formats with dynamic channel allocation
    /// such as .MID and .IT, this specifies the maximum voice count allowed while playing. .IT
    /// defaults to 64. .MID defaults to 32.
    pub max_polyphony          : i32,
    /// [w] Optional. Specify 0 to ignore. This is user data to be attached to the sound during
    /// creation. Access via
    /// [`Sound::get_user_data`](doc/rfmod/struct.Sound.html#method.get_user_data). Note: This is
    /// not passed to FMOD_FILE_OPENCALLBACK, that is a different userdata that is file specific.
    user_data                  : Box<ffi::SoundData>,
    /// [w] Optional. Specify 0 or SoundTypeUnknown to ignore. Instead of scanning all codec types,
    /// use this to speed up loading by making it jump straight to this codec.
    pub suggested_sound_type   : ::SoundType,
    /// [w] Optional. Specify 0 to ignore. Callback for opening this file.
    user_open                  : ffi::FMOD_FILE_OPENCALLBACK,
    /// [w] Optional. Specify 0 to ignore. Callback for closing this file.
    user_close                 : ffi::FMOD_FILE_CLOSECALLBACK,
    /// [w] Optional. Specify 0 to ignore. Callback for reading from this file.
    user_read                  : ffi::FMOD_FILE_READCALLBACK,
    /// [w] Optional. Specify 0 to ignore. Callback for seeking within this file.
    user_seek                  : ffi::FMOD_FILE_SEEKCALLBACK,
    /// [w] Optional. Specify 0 to ignore. Callback for seeking within this file.
    user_async_read            : ffi::FMOD_FILE_ASYNCREADCALLBACK,
    /// [w] Optional. Specify 0 to ignore. Callback for seeking within this file.
    user_async_cancel          : ffi::FMOD_FILE_ASYNCCANCELCALLBACK,
    /// [w] Optional. Specify 0 to ignore. Use this to differ the way fmod maps multichannel sounds
    /// to speakers. See SpeakerMapType for more.
    pub speaker_map            : ::SpeakerMapType,
    /// [w] Optional. Specify 0 to ignore. Specify a sound group if required, to put sound in as it
    /// is created.
    pub initial_sound_group    : sound_group::SoundGroup,
    /// [w] Optional. Specify 0 to ignore. For streams. Specify an initial position to seek the
    /// stream to.
    pub initial_seek_position  : u32,
    /// [w] Optional. Specify 0 to ignore. For streams. Specify the time unit for the position set
    /// in initialseekposition.
    pub initial_seek_pos_type  : TimeUnit,
    /// [w] Optional. Specify true to ignore. Set to false to use fmod's built in file system.
    /// Ignores setFileSystem callbacks and also FMOD_CREATESOUNEXINFO file callbacks. Useful for
    /// specific cases where you don't want to use your own file system but want to use fmod's file
    /// system (ie net streaming).
    pub ignore_set_file_system : bool,
    /// [w] Optional. Specify 0 to ignore. For CDDA sounds only - if non-zero use ASPI instead of
    /// NTSCSI to access the specified CD/DVD device.
    pub cdda_force_aspi        : i32,
    /// [w] Optional. Specify 0 or FMOD_AUDIOQUEUE_CODECPOLICY_DEFAULT to ignore. Policy used to
    /// determine whether hardware or software is used for decoding, see FMOD_AUDIOQUEUE_CODECPOLICY
    /// for options (iOS >= 3.0 required, otherwise only hardware is available)
    pub audio_queue_policy     : u32,
    /// [w] Optional. Specify 0 to ignore. Allows you to set a minimum desired MIDI mixer
    /// granularity. Values smaller than 512 give greater than default accuracy at the cost of more
    /// CPU and vice versa. Specify 0 for default (512 samples).
    pub min_midi_granularity   : u32,
    /// [w] Optional. Specify 0 to ignore. Specifies a thread index to execute non blocking load on.
    /// Allows for up to 5 threads to be used for loading at once. This is to avoid one load
    /// blocking another. Maximum value = 4.
    pub non_block_thread_id    : i32,
}

impl Default for CreateSoundexInfo {
    fn default() -> CreateSoundexInfo {
        CreateSoundexInfo {
            length: 0u32,
            file_offset: 0u32,
            num_channels: 0i32,
            default_frequency: 0i32,
            format: ::SoundFormat::None,
            decode_buffer_size: 0u32,
            initial_subsound: 0i32,
            num_subsounds: 0i32,
            inclusion_list: Vec::new(),
            pcm_read_callback: None,
            pcm_set_pos_callback: None,
            non_block_callback: None,
            dls_name: String::new(),
            dls_name_c: CString::new("").expect("CString failed on empty string..."),
            encryption_key: String::new(),
            encryption_key_c: CString::new("").expect("CString failed on empty string..."),
            max_polyphony: 0i32,
            user_data: Box::new(ffi::SoundData::new()),
            suggested_sound_type: ::SoundType::Unknown,
            user_open: None,
            user_close: None,
            user_read: None,
            user_seek: None,
            user_async_read: None,
            user_async_cancel: None,
            speaker_map: ::SpeakerMapType::Default,
            initial_sound_group: ffi::FFI::wrap(::std::ptr::null_mut()),
            initial_seek_position: 0u32,
            initial_seek_pos_type: TimeUnit(0u32),
            ignore_set_file_system: true,
            cdda_force_aspi: 0i32,
            audio_queue_policy: 0u32,
            min_midi_granularity: 0u32,
            non_block_thread_id: 0i32,
        }
    }
}

impl CreateSoundexInfo {
    fn convert_to_c(&mut self) -> ffi::FMOD_CREATESOUNDEXINFO {
        self.dls_name_c = CString::new(self.dls_name.clone()).expect("CString failed");
        self.encryption_key_c = CString::new(self.encryption_key.clone()).expect("CString failed");

        ffi::FMOD_CREATESOUNDEXINFO{
            cbsize: mem::size_of::<ffi::FMOD_CREATESOUNDEXINFO>() as i32,
            length: self.length,
            fileoffset: self.file_offset,
            numchannels: self.num_channels,
            defaultfrequency: self.default_frequency,
            format: self.format,
            decodebuffersize: self.decode_buffer_size,
            initialsubsound: self.initial_subsound,
            numsubsounds: self.num_subsounds,
            inclusionlist: self.inclusion_list.as_mut_ptr(),
            inclusionlistnum: self.inclusion_list.len() as i32,
            pcmreadcallback: match self.pcm_read_callback {
                Some(_) => Some(pcm_read_callback as extern "C" fn(*mut _, *mut _, _) -> _),
                None => None
            },
            pcmsetposcallback: match self.pcm_set_pos_callback {
                Some(_) => Some(pcm_set_pos_callback as extern "C" fn(*mut _, _, _, _) -> _),
                None => None
            },
            nonblockcallback: match self.non_block_callback {
                Some(_) => Some(non_block_callback as extern "C" fn(*mut _, _) -> _),
                None => None
            },
            dlsname: if !self.dls_name.is_empty() {
                self.dls_name_c.as_c_str().as_ptr() as *mut c_char
            } else {
                ::std::ptr::null_mut()
            },
            encryptionkey: if !self.encryption_key.is_empty() {
                self.encryption_key_c.as_c_str().as_ptr() as *mut c_char
            } else {
                ::std::ptr::null_mut()
            },
            maxpolyphony: self.max_polyphony,
            userdata: {
                self.user_data.non_block = self.non_block_callback;
                self.user_data.pcm_read = self.pcm_read_callback;
                self.user_data.pcm_set_pos = self.pcm_set_pos_callback;
                unsafe { ::std::mem::transmute::<&mut ffi::SoundData, *mut c_void>(&mut *self.user_data) }
            },
            suggestedsoundtype: self.suggested_sound_type,
            useropen: self.user_open,
            userclose: self.user_close,
            userread: self.user_read,
            userseek: self.user_seek,
            userasynccancel: self.user_async_cancel,
            userasyncread: self.user_async_read,
            speakermap: self.speaker_map,
            initialsoundgroup: ffi::FFI::unwrap(&self.initial_sound_group),
            initialseekposition: self.initial_seek_position,
            initialseekpostype: match self.initial_seek_pos_type {TimeUnit(v) => v},
            ignoresetfilesystem: match self.ignore_set_file_system {
                true => 0i32,
                false => 1i32
            },
            cddaforceaspi: self.cdda_force_aspi,
            audioqueuepolicy: self.audio_queue_policy,
            minmidigranularity: self.min_midi_granularity,
            nonblockthreadid: self.non_block_thread_id,
        }
    }
}

/// When creating a codec, declare one of these and provide the relevant callbacks and name for FMOD
/// to use when it opens and reads a file.
pub struct FmodCodecDescription {
    /// [in] Name of the codec.
    pub name             : String,
    /// [in] Plugin writer's version number.
    pub version          : u32,
    /// [in] Tells FMOD to open the file as a stream when calling
    /// [`Sys::create_sound`](doc/rfmod/struct.Sys.html#method.create_sound), and not a static
    /// sample. Should normally be 0 (FALSE), because generally the user wants to decode the file
    /// into memory when using [`Sys::create_sound`](doc/rfmod/struct.Sys.html#method.create_sound).
    /// Mainly used for formats that decode for a very long time, or could use large amounts of
    /// memory when decoded. Usually sequenced formats such as mod/s3m/xm/it/midi fall into this
    /// category. It is mainly to stop users that don't know what they're doing from getting
    /// FMOD_ERR_MEMORY returned from createSound when they should have in fact called
    /// System::createStream or used FMOD_CREATESTREAM in
    /// [`Sys::create_sound`](doc/rfmod/struct.Sys.html#method.create_sound).
    pub default_as_stream: i32,
    /// [in] When setposition codec is called, only these time formats will be passed to the codec.
    /// Use bitwise OR to accumulate different
    /// types.
    pub time_units       : TimeUnit,
    /// [in] Open callback for the codec for when FMOD tries to open a sound using this codec.
    open                 : ffi::FMOD_CODEC_OPENCALLBACK,
    /// [in] Close callback for the codec for when FMOD tries to close a sound using this codec.
    close                : ffi::FMOD_CODEC_CLOSECALLBACK,
    /// [in] Read callback for the codec for when FMOD tries to read some data from the file to the
    /// destination format (specified in the open callback).
    read                 : ffi::FMOD_CODEC_READCALLBACK,
    /// [in] Callback to return the length of the song in whatever format required when
    /// [`Sound::get_length`](doc/rfmod/struct.Sound.html#method.get_length).
    /// is called.
    get_length           : ffi::FMOD_CODEC_GETLENGTHCALLBACK,
    /// [in] Seek callback for the codec for when FMOD tries to seek within the file with
    /// [`Channel::set_position`](doc/rfmod/struct.Channel.html#method.set_position).
    set_position         : ffi::FMOD_CODEC_SETPOSITIONCALLBACK,
    /// [in] Tell callback for the codec for when FMOD tries to get the current position within the
    /// with [`Channel::get_position`](doc/rfmod/struct.Channel.html#method.get_position).
    get_position         : ffi::FMOD_CODEC_GETPOSITIONCALLBACK,
    /// [in] Sound creation callback for the codec when FMOD finishes creating the sound. (So the
    /// codec can set more parameters for the related created sound, ie loop points/mode or 3D
    /// attributes etc).
    sound_create         : ffi::FMOD_CODEC_SOUNDCREATECALLBACK,
    /// [in] Callback to tell FMOD about the waveformat of a particular subsound. This is to save
    /// memory, rather than saving 1000 FMOD_CODEC_WAVEFORMAT structures in the codec, the codec
    /// might have a more optimal way of storing this information.
    get_wave_format      : ffi::FMOD_CODEC_GETWAVEFORMAT,
}

impl Default for FmodCodecDescription {
    fn default() -> FmodCodecDescription {
        FmodCodecDescription {
            name: String::new(),
            version: 0u32,
            default_as_stream: 0i32,
            time_units: TimeUnit(0u32),
            open: None,
            close: None,
            read: None,
            get_length: None,
            set_position: None,
            get_position: None,
            sound_create: None,
            get_wave_format: None,
        }
    }
}

/// Wrapper for OutputHandle
pub struct OutputHandle {
    handle: *mut c_void
}

/// Structure to be filled with detailed memory usage information of a FMOD object
#[derive(Clone, Copy)]
pub struct MemoryUsageDetails
{
    /// [out] Memory not accounted for by other types
    pub other                  : u32,
    /// [out] String data
    pub string                 : u32,
    /// [out] System object and various internals
    pub system                 : u32,
    /// [out] Plugin objects and internals
    pub plugins                : u32,
    /// [out] Output module object and internals
    pub output                 : u32,
    /// [out] Channel related memory
    pub channel                : u32,
    /// [out] ChannelGroup objects and internals
    pub channel_group          : u32,
    /// [out] Codecs allocated for streaming
    pub codec                  : u32,
    /// [out] File buffers and structures
    pub file                   : u32,
    /// [out] Sound objects and internals
    pub sound                  : u32,
    /// [out] Sound data stored in secondary RAM
    pub secondary_ram          : u32,
    /// [out] SoundGroup objects and internals
    pub sound_group            : u32,
    /// [out] Stream buffer memory
    pub stream_buffer          : u32,
    /// [out] DSPConnection objects and internals
    pub dsp_connection         : u32,
    /// [out] DSP implementation objects
    pub dsp                    : u32,
    /// [out] Realtime file format decoding DSP objects
    pub dsp_codec              : u32,
    /// [out] Profiler memory footprint.
    pub profile                : u32,
    /// [out] Buffer used to store recorded data from microphone
    pub record_buffer          : u32,
    /// [out] Reverb implementation objects
    pub reverb                 : u32,
    /// [out] Reverb channel properties structs
    pub reverb_channel_props   : u32,
    /// [out] Geometry objects and internals
    pub geometry               : u32,
    /// [out] Sync point memory.
    pub sync_point             : u32,
    /// [out] EventSystem and various internals
    pub event_system           : u32,
    /// [out] MusicSystem and various internals
    pub music_system           : u32,
    /// [out] Definition of objects contained in all loaded projects e.g. events, groups, categories
    pub fev                    : u32,
    /// [out] Data loaded with preloadFSB
    pub memory_fsb             : u32,
    /// [out] EventProject objects and internals
    pub event_project          : u32,
    /// [out] EventGroup objects and internals
    pub event_group_i          : u32,
    /// [out] Objects used to manage wave banks
    pub sound_bank_class       : u32,
    /// [out] Data used to manage lists of wave bank usage
    pub sound_bank_list        : u32,
    /// [out] Stream objects and internals
    pub stream_instance        : u32,
    /// [out] Sound definition objects
    pub sound_def_class        : u32,
    /// [out] Sound definition static data objects
    pub sound_def_def_class    : u32,
    /// [out] Sound definition pool data
    pub sound_def_pool         : u32,
    /// [out] Reverb definition objects
    pub reverb_def             : u32,
    /// [out] Reverb objects
    pub event_reverb           : u32,
    /// [out] User property objects
    pub user_property          : u32,
    /// [out] Event instance base objects
    pub event_instance         : u32,
    /// [out] Complex event instance objects
    pub event_instance_complex : u32,
    /// [out] Simple event instance objects
    pub event_instance_simple  : u32,
    /// [out] Event layer instance objects
    pub event_instance_layer   : u32,
    /// [out] Event sound instance objects
    pub event_instance_sound   : u32,
    /// [out] Event envelope objects
    pub event_envelope         : u32,
    /// [out] Event envelope definition objects
    pub event_envelope_def     : u32,
    /// [out] Event parameter objects
    pub event_parameter        : u32,
    /// [out] Event category objects
    pub event_category         : u32,
    /// [out] Event envelope point objects
    pub event_envelope_point   : u32,
    /// [out] Event instance pool memory
    pub event_instance_pool    : u32,
}

impl Default for MemoryUsageDetails {
    fn default() -> MemoryUsageDetails {
        MemoryUsageDetails {
            other: 0u32,
            string: 0u32,
            system: 0u32,
            plugins: 0u32,
            output: 0u32,
            channel: 0u32,
            channel_group: 0u32,
            codec: 0u32,
            file: 0u32,
            sound: 0u32,
            secondary_ram: 0u32,
            sound_group: 0u32,
            stream_buffer: 0u32,
            dsp_connection: 0u32,
            dsp: 0u32,
            dsp_codec: 0u32,
            profile: 0u32,
            record_buffer: 0u32,
            reverb: 0u32,
            reverb_channel_props: 0u32,
            geometry: 0u32,
            sync_point: 0u32,
            event_system: 0u32,
            music_system: 0u32,
            fev: 0u32,
            memory_fsb: 0u32,
            event_project: 0u32,
            event_group_i: 0u32,
            sound_bank_class: 0u32,
            sound_bank_list: 0u32,
            stream_instance: 0u32,
            sound_def_class: 0u32,
            sound_def_def_class: 0u32,
            sound_def_pool: 0u32,
            reverb_def: 0u32,
            event_reverb: 0u32,
            user_property: 0u32,
            event_instance: 0u32,
            event_instance_complex: 0u32,
            event_instance_simple: 0u32,
            event_instance_layer: 0u32,
            event_instance_sound: 0u32,
            event_envelope: 0u32,
            event_envelope_def: 0u32,
            event_parameter: 0u32,
            event_category: 0u32,
            event_envelope_point: 0u32,
            event_instance_pool: 0u32,
        }
    }
}

pub fn get_memory_usage_details_ffi(details: MemoryUsageDetails) -> ffi::FMOD_MEMORY_USAGE_DETAILS {
    ffi::FMOD_MEMORY_USAGE_DETAILS {
        other: details.other,
        string: details.string,
        system: details.system,
        plugins: details.plugins,
        output: details.output,
        channel: details.channel,
        channel_group: details.channel_group,
        codec: details.codec,
        file: details.file,
        sound: details.sound,
        secondary_ram: details.secondary_ram,
        sound_group: details.sound_group,
        stream_buffer: details.stream_buffer,
        dsp_connection: details.dsp_connection,
        dsp: details.dsp,
        dsp_codec: details.dsp_codec,
        profile: details.profile,
        record_buffer: details.record_buffer,
        reverb: details.reverb,
        reverb_channel_props: details.reverb_channel_props,
        geometry: details.geometry,
        sync_point: details.sync_point,
        event_system: details.event_system,
        music_system: details.music_system,
        fev: details.fev,
        memory_fsb: details.memory_fsb,
        event_project: details.event_project,
        event_group_i: details.event_group_i,
        sound_bank_class: details.sound_bank_class,
        sound_bank_list: details.sound_bank_list,
        stream_instance: details.stream_instance,
        sound_def_class: details.sound_def_class,
        sound_def_def_class: details.sound_def_def_class,
        sound_def_pool: details.sound_def_pool,
        reverb_def: details.reverb_def,
        event_reverb: details.event_reverb,
        user_property: details.user_property,
        event_instance: details.event_instance,
        event_instance_complex: details.event_instance_complex,
        event_instance_simple: details.event_instance_simple,
        event_instance_layer: details.event_instance_layer,
        event_instance_sound: details.event_instance_sound,
        event_envelope: details.event_envelope,
        event_envelope_def: details.event_envelope_def,
        event_parameter: details.event_parameter,
        event_category: details.event_category,
        event_envelope_point: details.event_envelope_point,
        event_instance_pool: details.event_instance_pool,
    }
}

pub fn from_memory_usage_details_ptr(details: ffi::FMOD_MEMORY_USAGE_DETAILS) -> MemoryUsageDetails {
    MemoryUsageDetails {
        other: details.other,
        string: details.string,
        system: details.system,
        plugins: details.plugins,
        output: details.output,
        channel: details.channel,
        channel_group: details.channel_group,
        codec: details.codec,
        file: details.file,
        sound: details.sound,
        secondary_ram: details.secondary_ram,
        sound_group: details.sound_group,
        stream_buffer: details.stream_buffer,
        dsp_connection: details.dsp_connection,
        dsp: details.dsp,
        dsp_codec: details.dsp_codec,
        profile: details.profile,
        record_buffer: details.record_buffer,
        reverb: details.reverb,
        reverb_channel_props: details.reverb_channel_props,
        geometry: details.geometry,
        sync_point: details.sync_point,
        event_system: details.event_system,
        music_system: details.music_system,
        fev: details.fev,
        memory_fsb: details.memory_fsb,
        event_project: details.event_project,
        event_group_i: details.event_group_i,
        sound_bank_class: details.sound_bank_class,
        sound_bank_list: details.sound_bank_list,
        stream_instance: details.stream_instance,
        sound_def_class: details.sound_def_class,
        sound_def_def_class: details.sound_def_def_class,
        sound_def_pool: details.sound_def_pool,
        reverb_def: details.reverb_def,
        event_reverb: details.event_reverb,
        user_property: details.user_property,
        event_instance: details.event_instance,
        event_instance_complex: details.event_instance_complex,
        event_instance_simple: details.event_instance_simple,
        event_instance_layer: details.event_instance_layer,
        event_instance_sound: details.event_instance_sound,
        event_envelope: details.event_envelope,
        event_envelope_def: details.event_envelope_def,
        event_parameter: details.event_parameter,
        event_category: details.event_category,
        event_envelope_point: details.event_envelope_point,
        event_instance_pool: details.event_instance_pool,
    }
}

/// FMOD System Object
pub struct Sys {
    system: *mut ffi::FMOD_SYSTEM,
    is_first: bool
}

impl ffi::FFI<ffi::FMOD_SYSTEM> for Sys {
    fn wrap(system: *mut ffi::FMOD_SYSTEM) -> Sys {
        Sys {system: system, is_first: false}
    }

    fn unwrap(s: &Sys) -> *mut ffi::FMOD_SYSTEM {
        s.system
    }
}

impl Drop for Sys {
    fn drop(&mut self) {
        self.release();
    }
}

impl Sys {
    /* the first one created has to be the last one released */
    pub fn new() -> Result<Sys, ::Status> {
        let mut tmp = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_Create(&mut tmp) } {
            ::Status::Ok => Ok(Sys{system: tmp, is_first: true}),
            err => Err(err)
        }
    }

    pub fn init(&self) -> ::Status {
        unsafe { ffi::FMOD_System_Init(self.system, 1, ::INIT_NORMAL, ::std::ptr::null_mut()) }
    }

    pub fn init_with_parameters(&self, max_channels: i32, InitFlag(flag): InitFlag) -> ::Status {
        unsafe { ffi::FMOD_System_Init(self.system, max_channels, flag, ::std::ptr::null_mut()) }
    }

    pub fn update(&self) -> ::Status {
        unsafe { ffi::FMOD_System_Update(self.system) }
    }

    pub fn release(&mut self) -> ::Status {
        if self.is_first && !self.system.is_null() {
            unsafe {
                match match ffi::FMOD_System_Close(self.system) {
                    ::Status::Ok => ffi::FMOD_System_Release(self.system),
                    e => e
                } {
                    ::Status::Ok => {
                        self.system = ::std::ptr::null_mut();
                       ::Status::Ok
                    }
                    e => e
                }
                
            }
        } else {
            ::Status::Ok
        }
    }

    /// If music is empty, null is sent
    pub fn create_sound(&self, music: &str, options: Option<Mode>,
                        exinfo: Option<&mut CreateSoundexInfo>) -> Result<Sound, ::Status> {
        let mut sound = sound::from_ptr_first(::std::ptr::null_mut());
        let op = match options {
            Some(Mode(t)) => t,
            None => ::SOFTWARE | ::LOOP_OFF | ::_2D | ::CREATESTREAM
        };
        let mut ex = exinfo.map(|e| {
            let user_data = sound::get_user_data(&mut sound);
            user_data.non_block = e.non_block_callback;
            user_data.pcm_read = e.pcm_read_callback;
            user_data.pcm_set_pos = e.pcm_set_pos_callback;
            unsafe {
                user_data.user_data =
                    ::std::mem::transmute::<&mut ffi::SoundData, *mut c_void>(
                        &mut *e.user_data);
            }
            e.convert_to_c()
        });
        let exptr = ex.as_mut().map(|ex| ex as *mut ffi::FMOD_CREATESOUNDEXINFO)
            .unwrap_or (std::ptr::null_mut());

        match if music.len() > 0 {
            let music_cstring = CString::new(music).expect("CString failed");
            unsafe { ffi::FMOD_System_CreateSound(self.system,
                                                  music_cstring.as_ptr() as *const c_char, op, exptr,
                                                  sound::get_fffi(&mut sound)) }
        } else {
            unsafe { ffi::FMOD_System_CreateSound(self.system, ::std::ptr::null(), op, exptr,
                                                  sound::get_fffi(&mut sound)) }
        } {
            ::Status::Ok => {
                Ok(sound)
            },
            e => Err(e)
        }
    }

    /// Create sound from a file contained in a byte slice.
    ///
    /// Automatically adds the `OPENMEMORY` mode flag and uses the length of the
    /// slice as the exinfo length parameter. Ignores the `CREATESTREAM` mode
    /// flag since this would keep a pointer to the passed in buffer.
    pub fn create_sound_openmemory(&self, music: &[u8], options: Option<Mode>,
                        exinfo: Option<&mut CreateSoundexInfo>) -> Result<Sound, ::Status> {
        let mut sound = sound::from_ptr_first(::std::ptr::null_mut());
        let op = {
            let mut op = match options {
                Some(Mode(t)) => t,
                None => ::SOFTWARE | ::LOOP_OFF | ::_2D | ::CREATESTREAM
            };
            op |= ::OPENMEMORY;
            op &= !::CREATESTREAM;
            op
        };
        let mut ex = exinfo.map(|e| {
            let user_data = sound::get_user_data(&mut sound);
            user_data.non_block = e.non_block_callback;
            user_data.pcm_read = e.pcm_read_callback;
            user_data.pcm_set_pos = e.pcm_set_pos_callback;
            unsafe {
                user_data.user_data =
                    ::std::mem::transmute::<&mut ffi::SoundData, *mut c_void>(
                        &mut *e.user_data);
            }
            e.length = music.len() as u32;
            e.convert_to_c()
        });
        let mut exinfo_default = CreateSoundexInfo {
            length: music.len() as u32, .. Default::default()
        }.convert_to_c();
        let exptr = ex.as_mut().unwrap_or(&mut exinfo_default) as *mut ffi::FMOD_CREATESOUNDEXINFO;

        match if music.len() > 0 {
            unsafe { ffi::FMOD_System_CreateSound(self.system,
                                                  music.as_ptr() as *const c_char, op, exptr,
                                                  sound::get_fffi(&mut sound)) }
        } else {
            unsafe { ffi::FMOD_System_CreateSound(self.system, ::std::ptr::null(), op, exptr,
                                                  sound::get_fffi(&mut sound)) }
        } {
            ::Status::Ok => {
                Ok(sound)
            },
            e => Err(e)
        }
    }

    pub fn create_stream(&self, music: &str, options: Option<Mode>,
                         exinfo: Option<&mut CreateSoundexInfo>) -> Result<Sound, ::Status> {
        let mut sound = sound::from_ptr_first(::std::ptr::null_mut());
        let op = match options {
            Some(Mode(t)) => t,
            None => ::SOFTWARE | ::LOOP_OFF | ::_2D | ::CREATESTREAM
        };
        let ex = match exinfo {
            Some(e) => {
                let user_data = sound::get_user_data(&mut sound);
                user_data.non_block = e.non_block_callback;
                user_data.pcm_read = e.pcm_read_callback;
                user_data.pcm_set_pos = e.pcm_set_pos_callback;
                unsafe {
                    user_data.user_data =
                        ::std::mem::transmute::<&mut ffi::SoundData, *mut c_void>(
                            &mut *e.user_data);
                }
                &mut e.convert_to_c() as *mut ffi::FMOD_CREATESOUNDEXINFO
            },
            None => ::std::ptr::null_mut()
        };

        match if music.len() > 0 {
            let music_cstring = CString::new(music).expect("CString failed");
            unsafe { ffi::FMOD_System_CreateStream(self.system,
                                                   music_cstring.as_ptr() as *const c_char, op, ex,
                                                   sound::get_fffi(&mut sound)) }
        } else {
            unsafe { ffi::FMOD_System_CreateStream(self.system, ::std::ptr::null(), op, ex,
                                                   sound::get_fffi(&mut sound)) }
        } {
            ::Status::Ok => Ok(sound),
            err => Err(err)
        }
    }

    pub fn create_channel_group(&self, group_name: &str)
                                -> Result<channel_group::ChannelGroup, ::Status> {
        let mut channel_group = ::std::ptr::null_mut();
            let tmp_group_name = CString::new(group_name).expect("CString failed");

        match unsafe { ffi::FMOD_System_CreateChannelGroup(self.system,
                                                          tmp_group_name.as_ptr() as *const c_char,
                                                          &mut channel_group) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(channel_group)),
            e => Err(e)
        }
    }

    pub fn create_sound_group(&self, group_name: &str)
                              -> Result<sound_group::SoundGroup, ::Status> {
        let mut sound_group = ::std::ptr::null_mut();
            let tmp_group_name = CString::new(group_name).expect("CString failed");

        match unsafe { ffi::FMOD_System_CreateSoundGroup(self.system,
                                                         tmp_group_name.as_ptr() as *const c_char,
                                                         &mut sound_group) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(sound_group)),
            e => Err(e)
        }
    }

    pub fn create_reverb(&self) -> Result<reverb::Reverb, ::Status>{
        let mut t_reverb = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_CreateReverb(self.system, &mut t_reverb) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(t_reverb)),
            e => Err(e)
        }
    }

    pub fn create_DSP(&self) -> Result<dsp::Dsp, ::Status> {
        let mut t_dsp = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_CreateDSP(self.system, ::std::ptr::null_mut(),
                                                  &mut t_dsp) } {
            ::Status::Ok => Ok(dsp::from_ptr_first(t_dsp)),
            e => Err(e)
        }
    }

    pub fn create_DSP_with_description(&self, description: &mut dsp::DspDescription)
                                       -> Result<dsp::Dsp, ::Status> {
        let mut t_dsp = ::std::ptr::null_mut();
        let mut t_description = dsp::get_description_ffi(description);

        match unsafe { ffi::FMOD_System_CreateDSP(self.system, &mut t_description, &mut t_dsp) } {
            ::Status::Ok => Ok(dsp::from_ptr_first(t_dsp)),
            e => Err(e)
        }
    }

    pub fn create_DSP_by_type(&self, _type: ::DspType) -> Result<dsp::Dsp, ::Status> {
        let mut t_dsp = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_CreateDSPByType(self.system, _type, &mut t_dsp) } {
            ::Status::Ok => Ok(dsp::from_ptr_first(t_dsp)),
            e => Err(e)
        }
    }

    pub fn set_output(&self, output_type: ::OutputType) -> ::Status {
        unsafe { ffi::FMOD_System_SetOutput(self.system, output_type) }
    }

    pub fn get_output(&self) -> Result<::OutputType, ::Status> {
        let mut output_type = ::OutputType::AutoDetect;
        
        match unsafe { ffi::FMOD_System_GetOutput(self.system, &mut output_type) } {
            ::Status::Ok => Ok(output_type),
            e => Err(e)
        }
    }

    pub fn get_num_drivers(&self) -> Result<i32, ::Status> {
        let mut num_drivers = 0i32;

        match unsafe { ffi::FMOD_System_GetNumDrivers(self.system,
                                                      &mut num_drivers as *mut c_int) } {
            ::Status::Ok => Ok(num_drivers),
            e => Err(e)
        }
    }

    pub fn get_driver_info(&self, id: i32, name_len: usize) -> Result<(Guid, String), ::RStatus> {
        let mut c = Vec::with_capacity(name_len + 1);
        let mut guid = ffi::FMOD_GUID {
                           Data1: 0,
                           Data2: 0,
                           Data3: 0,
                           Data4: [0, 0, 0, 0, 0, 0, 0, 0],
                       };

        for _ in 0..(name_len + 1) {
            c.push(0);
        }

        match unsafe { ffi::FMOD_System_GetDriverInfo(self.system, id as c_int,
                                                      c.as_mut_ptr() as *mut c_char,
                                                      name_len as c_int, &mut guid) } {
            ::Status::Ok => Ok((Guid { 
                                    data1: guid.Data1,
                                    data2: guid.Data2,
                                    data3: guid.Data3,
                                    data4: guid.Data4,
                                 }, from_utf8!(c))),
            e => Err(::RStatus::FMOD(e)),
        }
    }

    pub fn get_driver_caps(&self, id: i32) -> Result<(FmodCaps, i32, ::SpeakerMode), ::Status> {
        let mut fmod_caps = 0u32;
        let mut speaker_mode = ::SpeakerMode::Raw;
        let mut control_panel_output_rate = 0i32;

        match unsafe { ffi::FMOD_System_GetDriverCaps(self.system, id as c_int, &mut fmod_caps,
                                                      &mut control_panel_output_rate as *mut c_int,
                                                      &mut speaker_mode) } {
            ::Status::Ok => Ok((FmodCaps(fmod_caps), control_panel_output_rate, speaker_mode)),
            e => Err(e),
        }
    }

    pub fn set_driver(&self, driver: i32) -> ::Status {
        unsafe { ffi::FMOD_System_SetDriver(self.system, driver as c_int) }
    }

    pub fn get_driver(&self) -> Result<i32, ::Status> {
        let mut driver = 0i32;

        match unsafe { ffi::FMOD_System_GetDriver(self.system, &mut driver as *mut c_int) } {
            ::Status::Ok => Ok(driver),
            e => Err(e),
        }
    }

    pub fn set_hardware_channels(&self, num_hardware_channels: i32) -> ::Status {
        unsafe { ffi::FMOD_System_SetHardwareChannels(self.system, num_hardware_channels as c_int) }
    }

    pub fn get_hardware_channels(&self) -> Result<i32, ::Status> {
        let mut num_hardware_channels = 0i32;

        match unsafe {
            ffi::FMOD_System_GetHardwareChannels(self.system,
                                                 &mut num_hardware_channels as *mut c_int)
        } {
            ::Status::Ok => Ok(num_hardware_channels),
            e => Err(e),
        }
    }

    pub fn set_software_channels(&self, num_software_channels: i32) -> ::Status {
        unsafe { ffi::FMOD_System_SetSoftwareChannels(self.system, num_software_channels as c_int) }
    }

    pub fn get_software_channels(&self) -> Result<i32, ::Status> {
        let mut num_software_channels = 0i32;

        match unsafe {
            ffi::FMOD_System_GetSoftwareChannels(self.system,
                                                 &mut num_software_channels as *mut c_int)
        } {
            ::Status::Ok => Ok(num_software_channels),
            e => Err(e),
        }
    }

    pub fn set_software_format(&self, sample_rate: i32, format: ::SoundFormat,
                               num_output_channels: i32, max_input_channels: i32,
                               resample_method: ::DspResampler) -> ::Status {
        unsafe {
            ffi::FMOD_System_SetSoftwareFormat(self.system, sample_rate as c_int, format,
                                               num_output_channels as c_int,
                                               max_input_channels as c_int, resample_method)
        }
    }

    pub fn get_software_format(&self) -> Result<SoftwareFormat, ::Status> {
        let mut t = SoftwareFormat {
            sample_rate: 0,
            format: ::SoundFormat::None,
            num_output_channels: 0,
            max_input_channels: 0,
            resample_method: ::DspResampler::NoInterp,
            bits: 0,
        };

        match unsafe { ffi::FMOD_System_GetSoftwareFormat(self.system,
                                                          &mut t.sample_rate as *mut c_int,
                                                          &mut t.format,
                                                          &mut t.num_output_channels as *mut c_int,
                                                          &mut t.max_input_channels as *mut c_int,
                                                          &mut t.resample_method,
                                                          &mut t.bits as *mut c_int)
        } {
            ::Status::Ok => Ok(t),
            e => Err(e),
        }
    }

    pub fn set_DSP_buffer_size(&self, buffer_length: u32, num_buffers: i32) -> ::Status {
        unsafe { ffi::FMOD_System_SetDSPBufferSize(self.system, buffer_length as c_uint,
                                                   num_buffers as c_int) }
    }

    pub fn get_DSP_buffer_size(&self) -> Result<(u32, i32), ::Status> {
        let mut buffer_length = 0u32;
        let mut num_buffers = 0i32;

        match unsafe { ffi::FMOD_System_GetDSPBufferSize(self.system,
                                                         &mut buffer_length as *mut c_uint,
                                                         &mut num_buffers as *mut c_int) } {
            ::Status::Ok => Ok((buffer_length, num_buffers)),
            e => Err(e),
        }
    }

    pub fn set_advanced_settings(&self, settings: &mut AdvancedSettings) -> ::Status {
        let mut converted_c_char: Vec<*const c_char> =
            (0..settings.ASIO_channel_list.len()).map(|pos| {
            settings.ASIO_channel_list[pos].as_ptr() as *const c_char
        }).collect();
        let deb_log_filename = CString::new(settings.debug_log_filename.clone()).expect("cstring failed");
        let mut advanced_settings = ffi::FMOD_ADVANCEDSETTINGS{
            cbsize: mem::size_of::<ffi::FMOD_ADVANCEDSETTINGS>() as i32,
            maxMPEGcodecs: settings.max_MPEG_codecs,
            maxADPCMcodecs: settings.max_ADPCM_codecs,
            maxXMAcodecs: settings.max_XMA_codecs,
            maxCELTcodecs: settings.max_CELT_codecs,
            maxVORBIScodecs: settings.max_VORBIS_codecs,
            maxAT9Codecs: settings.max_AT9_codecs,
            maxPCMcodecs: settings.max_PCM_codecs,
            ASIONumChannels: settings.ASIO_num_channels,
            ASIOChannelList: converted_c_char.as_mut_ptr() as *mut *mut c_char,
            ASIOSpeakerList: settings.ASIO_speaker_list.as_mut_ptr(),
            max3DReverbDSPs: settings.max_3D_reverb_DSPs,
            HRTFMinAngle: settings.HRTF_min_angle,
            HRTFMaxAngle: settings.HRTF_max_angle,
            HRTFFreq: settings.HRTF_freq,
            vol0virtualvol: settings.vol0_virtual_vol,
            eventqueuesize: settings.event_queue_size,
            defaultDecodeBufferSize: settings.default_decode_buffer_size,
            debugLogFilename: deb_log_filename.as_ptr() as *mut c_char,
            profileport: settings.profile_port,
            geometryMaxFadeTime: settings.geometry_max_fade_time,
            maxSpectrumWaveDataBuffers: settings.max_spectrum_wave_data_buffers,
            musicSystemCacheDelay: settings.music_system_cache_delay,
            distanceFilterCenterFreq: settings.distance_filter_center_freq,
            stackSizeStream: settings.stack_size_stream,
            stackSizeNonBlocking: settings.stack_size_non_blocking,
            stackSizeMixer: settings.stack_size_mixer,
        };

        unsafe { ffi::FMOD_System_SetAdvancedSettings(self.system, &mut advanced_settings) }
    }

    pub fn get_advanced_settings(&self) -> Result<AdvancedSettings, ::Status> {
        let mut advanced_settings = ffi::FMOD_ADVANCEDSETTINGS{
            cbsize: mem::size_of::<ffi::FMOD_ADVANCEDSETTINGS>() as i32,
            maxMPEGcodecs: 0,
            maxADPCMcodecs: 0,
            maxXMAcodecs: 0,
            maxCELTcodecs: 0,
            maxVORBIScodecs: 0,
            maxAT9Codecs: 0,
            maxPCMcodecs: 0,
            ASIONumChannels: 0,
            ASIOChannelList: ::std::ptr::null_mut(),
            ASIOSpeakerList: ::std::ptr::null_mut(),
            max3DReverbDSPs: 0,
            HRTFMinAngle: 0f32,
            HRTFMaxAngle: 0f32,
            HRTFFreq: 0f32,
            vol0virtualvol: 0f32,
            eventqueuesize: 0,
            defaultDecodeBufferSize: 0,
            debugLogFilename: ::std::ptr::null_mut(),
            profileport: 0,
            geometryMaxFadeTime: 0,
            maxSpectrumWaveDataBuffers: 0,
            musicSystemCacheDelay: 0,
            distanceFilterCenterFreq: 0f32,
            stackSizeStream: 0,
            stackSizeNonBlocking: 0,
            stackSizeMixer: 0,
        };

        match unsafe { ffi::FMOD_System_GetAdvancedSettings(self.system, &mut advanced_settings) } {
            ::Status::Ok => {
                let mut converted_ASIO_channel_vec = Vec::new();
                let mut converted_ASIO_speaker_vec = Vec::new();

                unsafe {
                    if !advanced_settings.ASIOChannelList.is_null() {
                        let mut it = 0;
                        loop {
                            let tmp = advanced_settings.ASIOChannelList.offset(it);

                            if (*tmp).is_null() {
                                break;
                            }

                            let l = ffi::strlen(*tmp);
                            
                            converted_ASIO_channel_vec.push(
                                String::from_raw_parts(*tmp as *mut u8, l, l));
                            it += 1;
                        }
                    }
                    if !advanced_settings.ASIOSpeakerList.is_null() {
                        let mut it = 0;
                        loop {
                            let tmp = advanced_settings.ASIOSpeakerList.offset(it);

                            if *tmp == ::Speaker::Null {
                                break;
                            }
                            converted_ASIO_speaker_vec.push(*tmp);
                            it += 1;
                        }
                    }
                }
                Ok(AdvancedSettings {
                    max_MPEG_codecs: advanced_settings.maxMPEGcodecs,
                    max_ADPCM_codecs: advanced_settings.maxADPCMcodecs,
                    max_XMA_codecs: advanced_settings.maxXMAcodecs,
                    max_CELT_codecs: advanced_settings.maxCELTcodecs,
                    max_VORBIS_codecs: advanced_settings.maxVORBIScodecs,
                    max_AT9_codecs: advanced_settings.maxAT9Codecs,
                    max_PCM_codecs: advanced_settings.maxPCMcodecs,
                    ASIO_num_channels: advanced_settings.ASIONumChannels,
                    ASIO_channel_list: converted_ASIO_channel_vec.clone(),
                    ASIO_speaker_list: converted_ASIO_speaker_vec,
                    max_3D_reverb_DSPs: advanced_settings.max3DReverbDSPs,
                    HRTF_min_angle: advanced_settings.HRTFMinAngle,
                    HRTF_max_angle: advanced_settings.HRTFMaxAngle,
                    HRTF_freq: advanced_settings.HRTFFreq,
                    vol0_virtual_vol: advanced_settings.vol0virtualvol,
                    event_queue_size: advanced_settings.eventqueuesize,
                    default_decode_buffer_size: advanced_settings.defaultDecodeBufferSize,
                    debug_log_filename: {
                        if !advanced_settings.debugLogFilename.is_null() {
                            let l = ffi::strlen(advanced_settings.debugLogFilename);

                            unsafe { String::from_raw_parts(
                                advanced_settings.debugLogFilename as *mut u8, l, l) }
                        } else {
                            String::new()
                        }
                    },
                    profile_port: advanced_settings.profileport,
                    geometry_max_fade_time: advanced_settings.geometryMaxFadeTime,
                    max_spectrum_wave_data_buffers: advanced_settings.maxSpectrumWaveDataBuffers,
                    music_system_cache_delay: advanced_settings.musicSystemCacheDelay,
                    distance_filter_center_freq: advanced_settings.distanceFilterCenterFreq,
                    stack_size_stream: advanced_settings.stackSizeStream,
                    stack_size_non_blocking: advanced_settings.stackSizeNonBlocking,
                    stack_size_mixer: advanced_settings.stackSizeMixer,
                })
            }
            e => Err(e),
        }
    }

    pub fn set_speaker_mode(&self, speaker_mode: ::SpeakerMode) -> ::Status {
        unsafe { ffi::FMOD_System_SetSpeakerMode(self.system, speaker_mode) }
    }

    pub fn get_speaker_mode(&self) -> Result<::SpeakerMode, ::Status> {
        let mut speaker_mode = ::SpeakerMode::Raw;

        match unsafe { ffi::FMOD_System_GetSpeakerMode(self.system, &mut speaker_mode) } {
            ::Status::Ok => Ok(speaker_mode),
            e => Err(e)
        }
    }

    pub fn set_plugin_path(&self, path: &str) -> ::Status {
        let tmp_path = CString::new(path).expect("CString failed");

        unsafe { ffi::FMOD_System_SetPluginPath(self.system, tmp_path.as_ptr() as *const c_char) }
    }

    pub fn load_plugin(&self, filename: &str, priority: u32) -> Result<PluginHandle, ::Status> {
        let mut handle = 0u32;
        let tmp_filename = filename.as_ptr();

        match unsafe { ffi::FMOD_System_LoadPlugin(self.system, tmp_filename as *const c_char,
                                                   &mut handle as *mut c_uint,
                                                   priority as c_uint) } {
            ::Status::Ok => Ok(PluginHandle(handle)),
            e => Err(e),
        }
    }

    pub fn unload_plugin(&self, PluginHandle(handle): PluginHandle) -> ::Status {
        unsafe { ffi::FMOD_System_UnloadPlugin(self.system, handle) }
    }

    pub fn get_num_plugins(&self, plugin_type: ::PluginType) -> Result<i32, ::Status> {
        let mut num_plugins = 0i32;

        match unsafe { ffi::FMOD_System_GetNumPlugins(self.system, plugin_type,
                                                      &mut num_plugins) } {
            ::Status::Ok => Ok(num_plugins),
            e => Err(e),
        }
    }

    pub fn get_plugin_handle(&self, plugin_type: ::PluginType,
                             index: i32) -> Result<PluginHandle, ::Status> {
        let mut handle = 0u32;

        match unsafe { ffi::FMOD_System_GetPluginHandle(self.system, plugin_type, index as c_int,
                                                        &mut handle as *mut c_uint) } {
            ::Status::Ok => Ok(PluginHandle(handle)),
            e => Err(e),
        }
    }

    pub fn get_plugin_info(&self, PluginHandle(handle): PluginHandle,
                           name_len: usize) -> Result<(String, ::PluginType, u32), ::RStatus> {
        let mut plugin_type = ::PluginType::Output;
        let mut version = 0u32;
        let mut c = Vec::with_capacity(name_len + 1);

        for _ in 0..(name_len + 1) {
            c.push(0);
        }

        match unsafe { ffi::FMOD_System_GetPluginInfo(self.system, handle, &mut plugin_type,
                                                      c.as_mut_ptr() as *mut c_char,
                                                      name_len as c_int,
                                                      &mut version as *mut c_uint) } {
            ::Status::Ok => Ok((from_utf8!(c), plugin_type, version)),
            e => Err(::RStatus::FMOD(e)),
        }
    }

    pub fn set_output_by_plugin(&self, PluginHandle(handle): PluginHandle) -> ::Status {
        unsafe { ffi::FMOD_System_SetOutputByPlugin(self.system, handle) }
    }

    pub fn get_output_by_plugin(&self) -> Result<PluginHandle, ::Status> {
        let mut handle = 0u32;

        match unsafe { ffi::FMOD_System_GetOutputByPlugin(self.system, &mut handle) } {
            ::Status::Ok => Ok(PluginHandle(handle)),
            e => Err(e),
        }
    }

    pub fn create_DSP_by_plugin(&self,
                                PluginHandle(handle): PluginHandle) -> Result<Dsp, ::Status> {
        let mut dsp = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_CreateDSPByPlugin(self.system, handle, &mut dsp) } {
            ::Status::Ok => Ok(dsp::from_ptr_first(dsp)),
            e => Err(e),
        }
    }

    pub fn set_3D_num_listeners(&self, num_listeners: i32) -> ::Status {
        unsafe { ffi::FMOD_System_Set3DNumListeners(self.system, num_listeners as c_int) }
    }

    pub fn get_3D_num_listeners(&self) -> Result<i32, ::Status> {
        let mut num_listeners = 0i32;

        match unsafe { ffi::FMOD_System_Get3DNumListeners(self.system,
                                                          &mut num_listeners as *mut c_int) } {
            ::Status::Ok => Ok(num_listeners),
            e => Err(e),
        }
    }

    pub fn set_3D_listener_attributes(&self, listener: i32, pos: &vector::Vector,
                                      vel: &vector::Vector, forward: &vector::Vector,
                                      up: &vector::Vector) -> ::Status {
        let c_p = vector::get_ffi(pos);
        let c_v = vector::get_ffi(vel);
        let c_f = vector::get_ffi(forward);
        let c_u = vector::get_ffi(up);

        unsafe { ffi::FMOD_System_Set3DListenerAttributes(self.system, listener as c_int, &c_p,
                                                          &c_v, &c_f, &c_u) }
    }

    /// Returns:
    ///
    /// Ok(position, velocity, forward, up)
    pub fn get_3D_listener_attributes(&self, listener: i32)
                                      -> Result<(vector::Vector, vector::Vector, vector::Vector,
                                                 vector::Vector), ::Status> {
        let mut pos = vector::get_ffi(&vector::Vector::new());
        let mut vel = vector::get_ffi(&vector::Vector::new());
        let mut forward = vector::get_ffi(&vector::Vector::new());
        let mut up = vector::get_ffi(&vector::Vector::new());

        match unsafe { ffi::FMOD_System_Get3DListenerAttributes(self.system, listener as c_int,
                                                                &mut pos, &mut vel, &mut forward,
                                                                &mut up) } {
            ::Status::Ok => Ok((vector::from_ptr(pos), vector::from_ptr(vel),
                                vector::from_ptr(forward), vector::from_ptr(up))),
            e => Err(e),
        }
    }

    pub fn set_3D_speaker_position(&self, speaker: ::Speaker, x: f32, y: f32,
                                   active: bool) -> ::Status {
        let t_active : c_int = match active {
            true => 1,
            false => 0,
        };
        unsafe { ffi::FMOD_System_Set3DSpeakerPosition(self.system, speaker, x, y, t_active) }
    }

    /// Returns:
    ///
    /// Ok(x, y, is_active)
    pub fn get_3D_speaker_position(&self,
                                   speaker: ::Speaker) -> Result<(f32, f32, bool), ::Status> {
        let mut x = 0f32;
        let mut y = 0f32;
        let mut active : c_int = 0;

        match unsafe { ffi::FMOD_System_Get3DSpeakerPosition(self.system, speaker, &mut x, &mut y,
                                                             &mut active) } {
            ::Status::Ok => Ok((x, y, match active {
                0 => false,
                _ => true,
            })),
            e => Err(e),
        }
    }

    pub fn set_3D_settings(&self, doppler_scale: f32, distance_factor: f32,
                           roll_off_scale: f32) -> ::Status {
        unsafe { ffi::FMOD_System_Set3DSettings(self.system, doppler_scale, distance_factor,
                                                roll_off_scale) }
    }

    /// Returns:
    ///
    /// Ok(doppler_scale, distance_factor, roll_off_scale)
    pub fn get_3D_settings(&self) -> Result<(f32, f32, f32), ::Status> {
        let mut doppler_scale = 0f32;
        let mut distance_factor = 0f32;
        let mut roll_off_scale = 0f32;

        match unsafe { ffi::FMOD_System_Get3DSettings(self.system, &mut doppler_scale,
                                                      &mut distance_factor, &mut roll_off_scale) } {
            ::Status::Ok => Ok((doppler_scale, distance_factor, roll_off_scale)),
            e => Err(e),
        }
    }

    pub fn set_stream_buffer_size(&self, file_buffer_size: u32,
                                  TimeUnit(file_buffer_size_type): TimeUnit) -> ::Status {
        unsafe { ffi::FMOD_System_SetStreamBufferSize(self.system, file_buffer_size as c_uint,
                                                      file_buffer_size_type) }
    }

    /// Returns:
    ///
    /// Ok(file_buffer_size, distance_factor, time)
    pub fn get_stream_buffer_size(&self) -> Result<(u32, TimeUnit), ::Status> {
        let mut file_buffer_size = 0u32;
        let mut file_buffer_size_type = 0u32;

        match unsafe { ffi::FMOD_System_GetStreamBufferSize(self.system, &mut file_buffer_size,
                                                            &mut file_buffer_size_type) } {
            ::Status::Ok => Ok((file_buffer_size, TimeUnit(file_buffer_size_type))),
            e => Err(e),
        }
    }

    pub fn get_version(&self) -> Result<u32, ::Status> {
        let mut version : c_uint = 0;

        match unsafe { ffi::FMOD_System_GetVersion(self.system, &mut version) } {
            ::Status::Ok => Ok(version as u32),
            e => Err(e),
        }
    }

    pub fn get_output_handle(&self) -> Result<OutputHandle, ::Status> {
        let mut output_h = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_GetOutputHandle(self.system, &mut output_h) } {
            ::Status::Ok => Ok(OutputHandle{handle: output_h}),
            e => Err(e),
        }
    }

    pub fn get_channels_playing(&self) -> Result<i32, ::Status> {
        let mut playing_chans : c_int = 0;

        match unsafe { ffi::FMOD_System_GetChannelsPlaying(self.system, &mut playing_chans) } {
            ::Status::Ok => Ok(playing_chans as i32),
            e => Err(e),
        }
    }

    /// Returns:
    ///
    /// Ok(dsp, stream, geometry, update, total)
    pub fn get_CPU_usage(&self) -> Result<(f32, f32, f32, f32, f32), ::Status> {
        let mut dsp = 0f32;
        let mut stream = 0f32;
        let mut geometry = 0f32;
        let mut update = 0f32;
        let mut total = 0f32;

        match unsafe { ffi::FMOD_System_GetCPUUsage(self.system, &mut dsp, &mut stream,
                                                    &mut geometry, &mut update, &mut total) } {
            ::Status::Ok => Ok((dsp, stream, geometry, update, total)),
            e => Err(e),
        }
    }

    /// Returns:
    ///
    /// Ok(current_alloced, max_allocated, total)
    pub fn get_sound_RAM(&self) -> Result<(i32, i32, i32), ::Status> {
        let mut current_alloced : c_int = 0;
        let mut max_allocated : c_int = 0;
        let mut total : c_int = 0;

        match unsafe { ffi::FMOD_System_GetSoundRAM(self.system, &mut current_alloced,
                                                    &mut max_allocated, &mut total) } {
            ::Status::Ok => Ok((current_alloced as i32, max_allocated as i32, total as i32)),
            e => Err(e),
        }
    }

    pub fn get_num_CDROM_drives(&self) -> Result<i32, ::Status> {
        let mut num_drives : c_int= 0;

        match unsafe { ffi::FMOD_System_GetNumCDROMDrives(self.system, &mut num_drives) } {
            ::Status::Ok => Ok(num_drives as i32),
            e => Err(e)
        }
    }

    /// Returns:
    ///
    /// Ok(drive_name, scsi_name, device_name)
    pub fn get_CDROM_drive_name(&self, drive: i32, drive_name_len: usize, scsi_name_len: usize,
                                device_name_len: usize)
                                -> Result<(String, String, String), ::RStatus> {
        let mut drive_name = Vec::with_capacity(drive_name_len + 1);
        let mut scsi_name = Vec::with_capacity(scsi_name_len + 1);
        let mut device_name = Vec::with_capacity(device_name_len + 1);

        for _ in 0..(drive_name_len + 1) {
            drive_name.push(0);
        }
        for _ in 0..(scsi_name_len + 1) {
            scsi_name.push(0);
        }
        for _ in 0..(device_name_len + 1) {
            device_name.push(0);
        }

        match unsafe { ffi::FMOD_System_GetCDROMDriveName(self.system, drive as c_int,
                                                          drive_name.as_mut_ptr() as *mut c_char,
                                                          drive_name_len as c_int,
                                                          scsi_name.as_mut_ptr() as *mut c_char,
                                                          scsi_name_len as c_int,
                                                          device_name.as_mut_ptr() as *mut c_char,
                                                          device_name_len as c_int) } {
            ::Status::Ok => {
                let drive_name = from_utf8!(drive_name);
                let scsi_name = from_utf8!(scsi_name);
                let device_name = from_utf8!(device_name);
                Ok((drive_name, scsi_name, device_name))
            }
            e => Err(::RStatus::FMOD(e)),
        }
    }

    pub fn get_spectrum(&self, spectrum_size: usize, channel_offset: Option<i32>,
                        window_type: Option<::DspFftWindow>) -> Result<Vec<f32>, ::Status> {
        let mut ptr : Vec<f32> = ::std::iter::repeat(0f32).take(spectrum_size).collect();
        let c_window_type = match window_type {
            Some(wt) => wt,
            None => ::DspFftWindow::Rect
        };
        let c_channel_offset : c_int = match channel_offset {
            Some(co) => co as c_int,
            None => 0
        };

        match unsafe { ffi::FMOD_System_GetSpectrum(self.system, ptr.as_mut_ptr(),
                                                    spectrum_size as c_int, c_channel_offset,
                                                    c_window_type) } {
            ::Status::Ok => Ok(ptr),
            e => Err(e),
        }
    }

    pub fn get_wave_data(&self, wave_size: usize,
                         channel_offset: i32) -> Result<Vec<f32>, ::Status> {
        let mut ptr : Vec<f32> = ::std::iter::repeat(0f32).take(wave_size).collect();

        match unsafe { ffi::FMOD_System_GetWaveData(self.system, ptr.as_mut_ptr(),
                                                    wave_size as c_int, channel_offset as c_int) } {
            ::Status::Ok => Ok(ptr),
            e => Err(e),
        }
    }
    
    pub fn get_channel(&self, channel_id: i32) -> Result<channel::Channel, ::Status> {
        let mut channel = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_GetChannel(self.system, channel_id as c_int,
                                                   &mut channel) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(channel)),
            e => Err(e),
        }
    }

    pub fn get_master_channel_group(&self) -> Result<channel_group::ChannelGroup, ::Status> {
        let mut channel_group = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_GetMasterChannelGroup(self.system, &mut channel_group) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(channel_group)),
            e => Err(e),
        }
    }

    pub fn get_master_sound_group(&self) -> Result<sound_group::SoundGroup, ::Status> {
        let mut sound_group = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_GetMasterSoundGroup(self.system, &mut sound_group) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(sound_group)),
            e => Err(e),
        }
    }

    pub fn set_reverb_properties(&self,
                                 properties: reverb_properties::ReverbProperties) -> ::Status {
        let t_properties = reverb_properties::get_ffi(properties);

        unsafe { ffi::FMOD_System_SetReverbProperties(self.system, &t_properties) }
    }

    pub fn get_reverb_properties(&self) -> Result<reverb_properties::ReverbProperties, ::Status> {
        let mut properties = reverb_properties::get_ffi(Default::default());

        match unsafe { ffi::FMOD_System_GetReverbProperties(self.system, &mut properties) } {
            ::Status::Ok => Ok(reverb_properties::from_ptr(properties)),
            e => Err(e),
        }
    }

    pub fn set_reverb_ambient_properties(&self, properties: reverb_properties::ReverbProperties)
                                         -> ::Status {
        let mut t_properties = reverb_properties::get_ffi(properties);

        unsafe { ffi::FMOD_System_SetReverbAmbientProperties(self.system, &mut t_properties) }
    }

    pub fn get_reverb_ambient_properties(&self)
                                         -> Result<reverb_properties::ReverbProperties, ::Status> {
        let mut properties = reverb_properties::get_ffi(Default::default());

        match unsafe { ffi::FMOD_System_GetReverbAmbientProperties(self.system, &mut properties) } {
            ::Status::Ok => Ok(reverb_properties::from_ptr(properties)),
            e => Err(e),
        }
    }

    pub fn get_DSP_head(&self) -> Result<Dsp, ::Status> {
        let mut head = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_GetDSPHead(self.system, &mut head) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(head)),
            e => Err(e),
        }
    }

    pub fn add_DSP(&self, dsp: &dsp::Dsp) -> Result<dsp_connection::DspConnection, ::Status> {
        let mut t_connection = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_AddDSP(self.system, ffi::FFI::unwrap(dsp),
                                               &mut t_connection) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(t_connection)),
            e => Err(e),
        }
    }

    pub fn lock_DSP(&self) -> ::Status {
        unsafe { ffi::FMOD_System_LockDSP(self.system) }
    }

    pub fn unlock_DSP(&self) -> ::Status {
        unsafe { ffi::FMOD_System_UnlockDSP(self.system) }
    }

    /// Returns:
    ///
    /// Ok(hi, lo)
    pub fn get_DSP_clock(&self) -> Result<(u32, u32), ::Status> {
        let mut hi : c_uint = 0;
        let mut lo : c_uint = 0;

        match unsafe { ffi::FMOD_System_GetDSPClock(self.system, &mut hi, &mut lo) } {
            ::Status::Ok => Ok((hi as u32, lo as u32)),
            e => Err(e),
        }
    }

    pub fn get_record_num_drivers(&self) -> Result<i32, ::Status> {
        let mut num_drivers : c_int = 0;

        match unsafe { ffi::FMOD_System_GetRecordNumDrivers(self.system, &mut num_drivers) } {
            ::Status::Ok => Ok(num_drivers as i32),
            e => Err(e),
        }
    }

    pub fn get_record_driver_info(&self, id: i32,
                                  name_len: usize) -> Result<(Guid, String), ::RStatus> {
        let mut guid = ffi::FMOD_GUID{
            Data1: 0,
            Data2: 0,
            Data3: 0,
            Data4: [0, 0, 0, 0, 0, 0, 0, 0]
        };
        let mut c = Vec::with_capacity(name_len + 1);

        for _ in 0..(name_len + 1) {
            c.push(0);
        }

        match unsafe { ffi::FMOD_System_GetRecordDriverInfo(self.system, id as c_int,
                                                            c.as_mut_ptr() as *mut c_char,
                                                            name_len as c_int, &mut guid) } {
            ::Status::Ok => Ok((Guid {
                                    data1: guid.Data1,
                                    data2: guid.Data2,
                                    data3: guid.Data3,
                                    data4: guid.Data4
                                }, from_utf8!(c))),
            e => Err(::RStatus::FMOD(e)),
        }
    }

    /// Returns:
    ///
    /// Ok(caps, min_frequency, max_frequency)
    pub fn get_record_driver_caps(&self, id: i32) -> Result<(FmodCaps, i32, i32), ::Status> {
        let mut fmod_caps : c_uint = 0;
        let mut min_frequency : c_int = 0;
        let mut max_frequency : c_int = 0;

        match unsafe { ffi::FMOD_System_GetRecordDriverCaps(self.system, id as c_int,
                                                            &mut fmod_caps, &mut min_frequency,
                                                            &mut max_frequency) } {
            ::Status::Ok => Ok((FmodCaps(fmod_caps), min_frequency as i32, max_frequency as i32)),
            e => Err(e),
        }
    }

    pub fn get_record_position(&self, id: i32) -> Result<u32, ::Status> {
        let mut position : c_uint = 0;

        match unsafe { ffi::FMOD_System_GetRecordPosition(self.system, id as c_int,
                                                          &mut position) } {
            ::Status::Ok => Ok(position as u32),
            e => Err(e),
        }
    }

    pub fn start_record(&self, id: i32, sound: &sound::Sound, _loop: bool) -> ::Status {
        let t_loop = match _loop {
            true => 1,
            _ => 0,
        };

        unsafe { ffi::FMOD_System_RecordStart(self.system, id as c_int, ffi::FFI::unwrap(sound),
                                              t_loop) }
    }

    pub fn stop_record(&self, id: i32) -> ::Status {
        unsafe { ffi::FMOD_System_RecordStop(self.system, id as c_int) }
    }

    pub fn is_recording(&self, id: i32) -> Result<bool, ::Status> {
        let mut is_recording : c_int = 0;
        
        match unsafe { ffi::FMOD_System_IsRecording(self.system, id as c_int, &mut is_recording) } {
            ::Status::Ok => Ok(is_recording == 1),
            e => Err(e),
        }
    }

    pub fn create_geometry(&self, max_polygons: i32,
                           max_vertices: i32) -> Result<geometry::Geometry, ::Status> {
        let mut geometry = ::std::ptr::null_mut();

        match unsafe { ffi::FMOD_System_CreateGeometry(self.system, max_polygons as c_int,
                                                       max_vertices as c_int, &mut geometry) } {
            ::Status::Ok => Ok(ffi::FFI::wrap(geometry)),
            e => Err(e),
        }
    }

    pub fn set_geometry_settings(&self, max_world_size: f32) -> ::Status {
        unsafe { ffi::FMOD_System_SetGeometrySettings(self.system, max_world_size) }
    }

    pub fn get_geometry_settings(&self) -> Result<f32, ::Status> {
        let mut max_world_size = 0f32;

        match unsafe { ffi::FMOD_System_GetGeometrySettings(self.system, &mut max_world_size) } {
            ::Status::Ok => Ok(max_world_size),
            e => Err(e),
        }
    }

    /// Returns:
    ///
    /// Ok(listener, source, direct, reverb)
    pub fn get_geometry_occlusion(&self)
                                  -> Result<(vector::Vector, vector::Vector, f32, f32), ::Status> {
        let listener = vector::get_ffi(&vector::Vector::new());
        let source = vector::get_ffi(&vector::Vector::new());
        let mut direct = 0f32;
        let mut reverb = 0f32;

        match unsafe { ffi::FMOD_System_GetGeometryOcclusion(self.system, &listener, &source,
                                                             &mut direct, &mut reverb) } {
            ::Status::Ok => Ok((vector::from_ptr(listener),
                                vector::from_ptr(source), direct, reverb)),
            e => Err(e),
        }
    }

    /// Returns:
    ///
    /// Ok(memory_used, details)
    pub fn get_memory_info(&self, MemoryBits(memory_bits): MemoryBits,
                           EventMemoryBits(event_memory_bits): EventMemoryBits)
                           -> Result<(u32, MemoryUsageDetails), ::Status> {
        let mut details = get_memory_usage_details_ffi(Default::default());
        let mut memory_used : c_uint = 0;

        match unsafe { ffi::FMOD_System_GetMemoryInfo(self.system, memory_bits, event_memory_bits,
                                                      &mut memory_used, &mut details) } {
            ::Status::Ok => Ok((memory_used as u32, from_memory_usage_details_ptr(details))),
            e => Err(e),
        }
    }

    pub fn set_file_system(&self, user_open: FileOpenCallback, user_close: FileCloseCallback,
                           user_read: FileReadCallback, user_seek: FileSeekCallback,/*
                           user_async_read: ffi::FMOD_FILE_ASYNCREADCALLBACK,
                           user_async_cancel: ffi::FMOD_FILE_ASYNCCANCELCALLBACK,*/
                           block_align: i32) -> ::Status {
        let tmp = get_saved_sys_callback();

        tmp.file_open = user_open;
        tmp.file_read = user_read;
        tmp.file_close = user_close;
        tmp.file_seek = user_seek;
        unsafe { ffi::FMOD_System_SetFileSystem(self.system,
            match user_open {
                Some(_) => Some(file_open_callback as extern "C" fn(*mut _, _, *mut _, *mut *mut _,
                                                                    *mut *mut _) -> _),
                None => None
            },
            match user_close {
                Some(_) => Some(file_close_callback as extern "C" fn(*mut _, *mut _) -> _),
                None => None
            },
            match user_read {
                Some(_) => Some(file_read_callback as extern "C" fn(*mut _, *mut _, _, *mut _,
                                                                    *mut _) -> _),
                None => None
            },
            match user_seek {
                Some(_) => Some(file_seek_callback as extern "C" fn(*mut _, _, *mut _) -> _),
                None => None
            },
            None,
            None,
            block_align)
        }
    }
}