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#![crate_name="allegro_image"]
#![crate_type = "lib"]
#![allow(non_upper_case_globals)]
extern crate allegro;
#[macro_use]
extern crate allegro_util;
extern crate libc;
use std::cell::RefCell;
use std::marker::PhantomData;
use allegro::Core;
use ffi::allegro_image::*;
#[cfg(not(manual_link))]
mod link_name
{
#[link(name = "allegro_image")]
extern "C" {}
}
pub mod ffi
{
pub use self::allegro_image::*;
pub mod allegro_image
{
use libc::*;
use allegro::c_bool;
extern "C"
{
pub fn al_init_image_addon() -> c_bool;
pub fn al_shutdown_image_addon();
pub fn al_get_allegro_image_version() -> uint32_t;
}
}
}
static mut initialized: bool = false;
thread_local!(static spawned_on_this_thread: RefCell<bool> = RefCell::new(false));
pub struct ImageAddon
{
no_send_marker: PhantomData<*mut u8>
}
impl ImageAddon
{
pub fn init(core: &Core) -> Result<ImageAddon, String>
{
let mutex = core.get_core_mutex();
let _guard = mutex.lock();
unsafe
{
if initialized
{
if spawned_on_this_thread.with(|x| *x.borrow())
{
Err("The image addon has already been created in this task.".to_string())
}
else
{
spawned_on_this_thread.with(|x| *x.borrow_mut() = true);
Ok(ImageAddon{ no_send_marker: PhantomData })
}
}
else
{
if al_init_image_addon() != 0
{
initialized = true;
spawned_on_this_thread.with(|x| *x.borrow_mut() = true);
Ok(ImageAddon{ no_send_marker: PhantomData })
}
else
{
Err("Could not initialize the image addon.".to_string())
}
}
}
}
pub fn get_version() -> i32
{
unsafe
{
al_get_allegro_image_version() as i32
}
}
}