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use cty::c_int;
use ndless::prelude::*;
use crate::get_error;
use crate::video::ll::SDL_RWFromConstMem;
use crate::video::Surface;
pub mod ll {
#![allow(non_camel_case_types)]
use cty::{c_char, c_int, c_uint};
use crate::video::ll::{SDL_RWops, SDL_Surface};
pub type IMG_InitFlags = c_uint;
pub const IMG_INIT_JPG: IMG_InitFlags = 1;
pub const IMG_INIT_PNG: IMG_InitFlags = 2;
pub const IMG_INIT_TIF: IMG_InitFlags = 4;
pub const IMG_INIT_WEBP: IMG_InitFlags = 8;
extern "C" {
pub fn IMG_Init(flags: c_int) -> c_int;
pub fn IMG_Quit();
pub fn IMG_Load(file: *const c_char) -> *mut SDL_Surface;
pub fn IMG_LoadGIF_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
pub fn IMG_LoadLBM_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
pub fn IMG_LoadPCX_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
pub fn IMG_LoadPNM_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
pub fn IMG_LoadTGA_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
pub fn IMG_LoadXCF_RW(src: *mut SDL_RWops) -> *mut SDL_Surface;
}
}
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub enum InitFlag {
JPG = ll::IMG_INIT_JPG as isize,
PNG = ll::IMG_INIT_PNG as isize,
TIF = ll::IMG_INIT_TIF as isize,
}
pub fn init(flags: &[InitFlag]) -> Vec<InitFlag> {
let bitflags = unsafe {
ll::IMG_Init(
flags
.iter()
.fold(0i32, |flags, &flag| flags | flag as c_int),
)
};
let flags = [InitFlag::JPG, InitFlag::PNG, InitFlag::TIF];
flags
.iter()
.filter_map(|&flag| {
if bitflags & (flag as c_int) != 0 {
Some(flag)
} else {
None
}
})
.collect()
}
pub fn load_file(file: impl Into<String>) -> Result<Surface, String> {
let cfile = ndless::cstr!(file.into());
unsafe {
let raw = ll::IMG_Load(cfile.as_ptr());
if raw.is_null() {
Err(get_error())
} else {
Ok(Surface { raw, owned: true })
}
}
}
macro_rules! load_typed {
($name: ident, $function: ident) => {
pub fn $name(buffer: &[u8]) -> Result<Surface, String> {
unsafe {
let mem =
SDL_RWFromConstMem(buffer.as_ptr() as *const cty::c_void, buffer.len() as i32);
if mem.is_null() {
return Err(get_error());
}
let raw = ll::$function(mem);
if raw.is_null() {
Err(get_error())
} else {
Ok(Surface { raw, owned: true })
}
}
}
};
}
load_typed!(load_mem_gif, IMG_LoadGIF_RW);
load_typed!(load_mem_lbm, IMG_LoadLBM_RW);
load_typed!(load_mem_pcx, IMG_LoadPCX_RW);
load_typed!(load_mem_tga, IMG_LoadTGA_RW);
load_typed!(load_mem_xcf, IMG_LoadXCF_RW);
pub fn quit() {
unsafe {
ll::IMG_Quit();
}
}