mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-12-24 06:11:30 +11:00
Add libcaca backend
This commit is contained in:
parent
aca06d16e2
commit
d3cc9064f4
187
src/api/caca/libcaca.rs
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187
src/api/caca/libcaca.rs
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@ -0,0 +1,187 @@
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use libc;
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use std::ffi::CStr;
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use std::mem;
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use api::dlopen;
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pub type caca_display_t = libc::c_void;
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pub type caca_canvas_t = libc::c_void;
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pub type caca_dither_t = libc::c_void;
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pub struct LibCaca {
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lib: *mut libc::c_void,
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caca_create_display: unsafe extern fn(*mut caca_canvas_t) -> *mut caca_display_t,
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caca_free_display: unsafe extern fn(*mut caca_display_t) -> libc::c_int,
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caca_get_canvas: unsafe extern fn(*mut caca_display_t) -> *mut caca_canvas_t,
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caca_refresh_display: unsafe extern fn(*mut caca_display_t) -> libc::c_int,
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caca_dither_bitmap: unsafe extern fn(*mut caca_canvas_t, libc::c_int, libc::c_int, libc::c_int,
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libc::c_int, *const caca_dither_t, *const libc::c_void)
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-> libc::c_int,
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caca_free_dither: unsafe extern fn(*mut caca_dither_t) -> libc::c_int,
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caca_create_dither: unsafe extern fn(libc::c_int, libc::c_int, libc::c_int, libc::c_int,
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libc::uint32_t, libc::uint32_t, libc::uint32_t,
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libc::uint32_t) -> *mut caca_dither_t,
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caca_get_canvas_width: unsafe extern fn(*mut caca_canvas_t) -> libc::c_int,
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caca_get_canvas_height: unsafe extern fn(*mut caca_canvas_t) -> libc::c_int,
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}
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#[derive(Debug)]
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pub struct OpenError {
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reason: String
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}
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impl LibCaca {
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pub fn open() -> Result<LibCaca, OpenError> {
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let lib = unsafe { dlopen::dlopen(b"libcaca.so.0\0".as_ptr() as *const _,
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dlopen::RTLD_NOW) };
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if lib.is_null() {
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let cstr = unsafe { CStr::from_ptr(dlopen::dlerror()) };
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let reason = String::from_utf8(cstr.to_bytes().to_vec()).unwrap();
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return Err(OpenError { reason: reason });
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}
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let caca_create_display = match unsafe { dlopen::dlsym(lib,
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b"caca_create_display\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_create_display".to_string()
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}),
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ptr => ptr
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};
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let caca_free_display = match unsafe { dlopen::dlsym(lib,
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b"caca_free_display\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_free_display".to_string()
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}),
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ptr => ptr
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};
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let caca_get_canvas = match unsafe { dlopen::dlsym(lib,
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b"caca_get_canvas\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_get_canvas".to_string()
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}),
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ptr => ptr
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};
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let caca_refresh_display = match unsafe { dlopen::dlsym(lib,
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b"caca_refresh_display\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_refresh_display".to_string()
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}),
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ptr => ptr
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};
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let caca_dither_bitmap = match unsafe { dlopen::dlsym(lib,
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b"caca_dither_bitmap\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_dither_bitmap".to_string()
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}),
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ptr => ptr
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};
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let caca_free_dither = match unsafe { dlopen::dlsym(lib,
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b"caca_free_dither\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_free_dither".to_string()
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}),
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ptr => ptr
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};
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let caca_create_dither = match unsafe { dlopen::dlsym(lib,
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b"caca_create_dither\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_create_dither".to_string()
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}),
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ptr => ptr
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};
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let caca_get_canvas_width = match unsafe { dlopen::dlsym(lib,
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b"caca_get_canvas_width\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_get_canvas_width".to_string()
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}),
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ptr => ptr
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};
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let caca_get_canvas_height = match unsafe { dlopen::dlsym(lib,
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b"caca_get_canvas_height\0".as_ptr() as *const _) }
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{
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ptr if ptr.is_null() => return Err(OpenError {
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reason: "Could not load caca_get_canvas_height".to_string()
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}),
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ptr => ptr
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};
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Ok(LibCaca {
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lib: lib,
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caca_create_display: unsafe { mem::transmute(caca_create_display) },
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caca_free_display: unsafe { mem::transmute(caca_free_display) },
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caca_get_canvas: unsafe { mem::transmute(caca_get_canvas) },
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caca_refresh_display: unsafe { mem::transmute(caca_refresh_display) },
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caca_dither_bitmap: unsafe { mem::transmute(caca_dither_bitmap) },
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caca_free_dither: unsafe { mem::transmute(caca_free_dither) },
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caca_create_dither: unsafe { mem::transmute(caca_create_dither) },
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caca_get_canvas_width: unsafe { mem::transmute(caca_get_canvas_width) },
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caca_get_canvas_height: unsafe { mem::transmute(caca_get_canvas_height) },
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})
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}
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pub unsafe fn caca_create_display(&self, cv: *mut caca_canvas_t) -> *mut caca_display_t {
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(self.caca_create_display)(cv)
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}
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pub unsafe fn caca_free_display(&self, dp: *mut caca_display_t) -> libc::c_int {
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(self.caca_free_display)(dp)
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}
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pub unsafe fn caca_get_canvas(&self, dp: *mut caca_display_t) -> *mut caca_canvas_t {
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(self.caca_get_canvas)(dp)
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}
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pub unsafe fn caca_refresh_display(&self, dp: *mut caca_display_t) -> libc::c_int {
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(self.caca_refresh_display)(dp)
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}
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pub unsafe fn caca_dither_bitmap(&self, cv: *mut caca_canvas_t, x: libc::c_int, y: libc::c_int,
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w: libc::c_int, h: libc::c_int, d: *const caca_dither_t,
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pixels: *const libc::c_void) -> libc::c_int
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{
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(self.caca_dither_bitmap)(cv, x, y, w, h, d, pixels)
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}
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pub unsafe fn caca_free_dither(&self, d: *mut caca_dither_t) -> libc::c_int {
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(self.caca_free_dither)(d)
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}
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pub unsafe fn caca_create_dither(&self, bpp: libc::c_int, w: libc::c_int, h: libc::c_int,
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pitch: libc::c_int, rmask: libc::uint32_t, gmask: libc::uint32_t,
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bmask: libc::uint32_t, amask: libc::uint32_t) -> *mut caca_dither_t
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{
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(self.caca_create_dither)(bpp, w, h, pitch, rmask, gmask, bmask, amask)
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}
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pub unsafe fn caca_get_canvas_width(&self, cv: *mut caca_canvas_t) -> libc::c_int {
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(self.caca_get_canvas_width)(cv)
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}
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pub unsafe fn caca_get_canvas_height(&self, cv: *mut caca_canvas_t) -> libc::c_int {
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(self.caca_get_canvas_height)(cv)
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}
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}
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impl Drop for LibCaca {
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fn drop(&mut self) {
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unsafe { dlopen::dlclose(self.lib); }
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}
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}
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241
src/api/caca/mod.rs
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241
src/api/caca/mod.rs
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@ -0,0 +1,241 @@
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#![cfg(all(any(target_os = "linux", target_os = "freebsd"), feature="headless"))]
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use libc;
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use api::osmesa::OsMesaContext;
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use BuilderAttribs;
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use CreationError;
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use Event;
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use PixelFormat;
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use CursorState;
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use MouseCursor;
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use std::collections::VecDeque;
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use std::ptr;
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mod libcaca;
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pub struct Window {
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libcaca: libcaca::LibCaca,
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display: *mut libcaca::caca_display_t,
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opengl: OsMesaContext,
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dither: *mut libcaca::caca_dither_t,
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}
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#[derive(Clone)]
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pub struct WindowProxy;
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impl WindowProxy {
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pub fn wakeup_event_loop(&self) {
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unimplemented!()
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}
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}
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pub struct MonitorID;
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pub fn get_available_monitors() -> VecDeque<MonitorID> {
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VecDeque::new()
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}
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pub fn get_primary_monitor() -> MonitorID {
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MonitorID
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}
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impl MonitorID {
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pub fn get_name(&self) -> Option<String> {
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unimplemented!();
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}
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pub fn get_native_identifier(&self) -> ::native_monitor::NativeMonitorId {
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::native_monitor::NativeMonitorId::Unavailable
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}
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pub fn get_dimensions(&self) -> (u32, u32) {
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unimplemented!();
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}
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}
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pub struct PollEventsIterator<'a> {
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window: &'a Window,
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}
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impl<'a> Iterator for PollEventsIterator<'a> {
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type Item = Event;
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fn next(&mut self) -> Option<Event> {
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None
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}
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}
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pub struct WaitEventsIterator<'a> {
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window: &'a Window,
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}
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impl<'a> Iterator for WaitEventsIterator<'a> {
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type Item = Event;
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fn next(&mut self) -> Option<Event> {
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loop {}
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}
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}
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impl Window {
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pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
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let opengl = try!(OsMesaContext::new(builder));
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let opengl_dimensions = opengl.get_dimensions();
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let libcaca = match libcaca::LibCaca::open() {
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Err(_) => return Err(CreationError::NotSupported),
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Ok(l) => l
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};
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let display = unsafe { libcaca.caca_create_display(ptr::null_mut()) };
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if display.is_null() {
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return Err(CreationError::OsError("caca_create_display failed".to_string()));
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}
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let dither = unsafe {
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#[cfg(target_endian = "little")]
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fn get_masks() -> (u32, u32, u32, u32) { (0xff, 0xff00, 0xff0000, 0xff000000) }
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#[cfg(target_endian = "big")]
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fn get_masks() -> (u32, u32, u32, u32) { (0xff000000, 0xff0000, 0xff00, 0xff) }
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let masks = get_masks();
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libcaca.caca_create_dither(32, opengl_dimensions.0 as libc::c_int,
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opengl_dimensions.1 as libc::c_int,
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opengl_dimensions.0 as libc::c_int * 4,
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masks.0, masks.1, masks.2, masks.3)
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};
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if dither.is_null() {
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unsafe { libcaca.caca_free_display(display) };
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return Err(CreationError::OsError("caca_create_dither failed".to_string()));
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}
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Ok(Window {
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libcaca: libcaca,
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display: display,
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opengl: opengl,
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dither: dither,
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})
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}
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pub fn is_closed(&self) -> bool {
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false
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}
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pub fn set_title(&self, title: &str) {
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}
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pub fn show(&self) {
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}
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pub fn hide(&self) {
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}
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pub fn get_position(&self) -> Option<(i32, i32)> {
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unimplemented!()
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}
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pub fn set_position(&self, x: i32, y: i32) {
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}
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pub fn get_inner_size(&self) -> Option<(u32, u32)> {
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Some(self.opengl.get_dimensions())
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}
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pub fn get_outer_size(&self) -> Option<(u32, u32)> {
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self.get_inner_size()
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}
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pub fn set_inner_size(&self, _x: u32, _y: u32) {
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unimplemented!()
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}
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pub fn create_window_proxy(&self) -> WindowProxy {
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unimplemented!()
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}
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pub fn poll_events(&self) -> PollEventsIterator {
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PollEventsIterator {
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window: self
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}
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}
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pub fn wait_events(&self) -> WaitEventsIterator {
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WaitEventsIterator {
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window: self
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}
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}
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pub unsafe fn make_current(&self) {
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self.opengl.make_current()
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}
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pub fn is_current(&self) -> bool {
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self.opengl.is_current()
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}
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pub fn get_proc_address(&self, addr: &str) -> *const () {
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self.opengl.get_proc_address(addr) as *const _
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}
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pub fn swap_buffers(&self) {
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unsafe {
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let canvas = self.libcaca.caca_get_canvas(self.display);
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let width = self.libcaca.caca_get_canvas_width(canvas);
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let height = self.libcaca.caca_get_canvas_height(canvas);
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let buffer = self.opengl.get_framebuffer().chunks(self.opengl.get_dimensions().0 as usize)
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.flat_map(|i| i.iter().cloned()).rev().collect::<Vec<u32>>();
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self.libcaca.caca_dither_bitmap(canvas, 0, 0, width as libc::c_int,
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height as libc::c_int, self.dither,
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buffer.as_ptr() as *const _);
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self.libcaca.caca_refresh_display(self.display);
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};
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}
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pub fn platform_display(&self) -> *mut libc::c_void {
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unimplemented!()
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}
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pub fn platform_window(&self) -> *mut libc::c_void {
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unimplemented!()
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}
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pub fn get_api(&self) -> ::Api {
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self.opengl.get_api()
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}
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pub fn get_pixel_format(&self) -> PixelFormat {
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unimplemented!();
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}
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pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
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}
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pub fn set_cursor(&self, cursor: MouseCursor) {
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}
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pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
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Ok(())
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}
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pub fn hidpi_factor(&self) -> f32 {
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1.0
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}
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pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
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Ok(())
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}
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}
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impl Drop for Window {
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fn drop(&mut self) {
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unsafe {
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self.libcaca.caca_free_dither(self.dither);
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self.libcaca.caca_free_display(self.display);
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}
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}
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}
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@ -1,4 +1,5 @@
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pub mod android;
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pub mod caca;
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pub mod cocoa;
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pub mod dlopen;
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pub mod egl;
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@ -35,6 +35,14 @@ impl OsMesaContext {
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})
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}
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pub fn get_framebuffer(&self) -> &[u32] {
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&self.buffer
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}
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pub fn get_dimensions(&self) -> (u32, u32) {
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(self.width, self.height)
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}
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pub unsafe fn make_current(&self) {
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let ret = osmesa_sys::OSMesaMakeCurrent(self.context,
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self.buffer.as_ptr() as *mut libc::c_void,
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