freetype_ffi/
lib.rs

1// Copyright 2018 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#![allow(improper_ctypes)]
6#![allow(unused)]
7#![allow(non_snake_case)]
8#![allow(non_camel_case_types)]
9#![allow(non_upper_case_globals)]
10
11use libc::{self, c_char, c_int, c_long, c_uchar, c_uint, c_ulong, c_ushort, c_void, size_t};
12
13type FT_Alloc_Func = unsafe extern "C" fn(FT_Memory, c_long) -> *mut c_void;
14type FT_Free_Func = unsafe extern "C" fn(FT_Memory, *mut c_void);
15type FT_Realloc_Func = unsafe extern "C" fn(FT_Memory, c_long, c_long, *mut c_void) -> *mut c_void;
16
17type FT_Stream_IoFunc = unsafe extern "C" fn(FT_Stream, c_ulong, *mut c_uchar, c_ulong) -> c_ulong;
18type FT_Stream_CloseFunc = unsafe extern "C" fn(FT_Stream);
19
20#[repr(C)]
21pub struct FT_MemoryRec {
22    pub user: libc::intptr_t,
23    pub alloc: FT_Alloc_Func,
24    pub free: FT_Free_Func,
25    pub realloc: FT_Realloc_Func,
26}
27
28pub struct FT_Parameter {
29    tag: c_ulong,
30    data: *mut c_void,
31}
32
33#[repr(C)]
34pub struct FT_Open_Args {
35    pub flags: c_uint,
36    pub memory_base: *const c_uchar,
37    pub memory_size: c_long,
38    pub pathname: *const c_char,
39    pub stream: FT_Stream,
40    pub driver: FT_Module,
41    pub num_params: c_int,
42    pub params: *mut FT_Parameter,
43}
44
45#[repr(C)]
46pub struct FT_StreamRec {
47    pub base: *const c_uchar,
48    pub size: c_ulong,
49    pub pos: c_ulong,
50
51    pub descriptor: FT_StreamDesc,
52    pub pathname: FT_StreamDesc,
53    pub read: FT_Stream_IoFunc,
54    pub close: FT_Stream_CloseFunc,
55
56    pub memory: FT_Memory,
57    pub cursor: *mut c_uchar,
58    pub limit: *mut c_uchar,
59}
60
61#[derive(Debug)]
62#[repr(C)]
63pub struct FT_SfntName {
64    pub platform_id: c_ushort,
65    pub encoding_id: c_ushort,
66    pub language_id: c_ushort,
67    pub name_id: c_ushort,
68    /// NOT null-terminated!
69    pub string: *mut c_uchar,
70    pub string_len: c_uint,
71}
72
73impl Default for FT_SfntName {
74    fn default() -> Self {
75        Self {
76            platform_id: Default::default(),
77            encoding_id: Default::default(),
78            language_id: Default::default(),
79            name_id: Default::default(),
80            string: std::ptr::null_mut(),
81            string_len: Default::default(),
82        }
83    }
84}
85
86pub type FT_Memory = *const FT_MemoryRec;
87pub type FT_Error = c_int;
88pub type FT_Library = *mut c_void;
89pub type FT_Stream = *const FT_StreamRec;
90pub type FT_StreamDesc = *mut c_void;
91pub type FT_Module = *const c_void;
92pub type FT_Face = *mut c_void;
93
94pub const FT_Err_Ok: FT_Error = 0;
95
96pub const FT_OPEN_STREAM: c_uint = 0x2;
97pub const FT_OPEN_PATHNAME: c_uint = 0x4;
98
99// Font name IDs
100pub const TT_NAME_ID_FONT_FAMILY: c_ushort = 1;
101pub const TT_NAME_ID_FULL_NAME: c_ushort = 4;
102pub const TT_NAME_ID_PS_NAME: c_ushort = 6;
103
104// Platform IDs
105pub const TT_PLATFORM_MICROSOFT: c_ushort = 3;
106
107// Encoding IDs
108pub const TT_MS_ID_SYMBOL_CS: c_ushort = 0;
109pub const TT_MS_ID_UNICODE_CS: c_ushort = 1;
110
111// Language IDs
112pub const TT_MS_LANGID_ENGLISH_UNITED_STATES: c_ushort = 0x0409;
113
114// From libfreetype.so or libfreetype2_for_rust_host.a
115extern "C" {
116    pub fn FT_New_Library(memory: FT_Memory, alibrary: *mut FT_Library) -> FT_Error;
117    pub fn FT_Done_Library(library: FT_Library) -> FT_Error;
118    pub fn FT_Add_Default_Modules(library: FT_Library);
119    pub fn FT_New_Memory_Face(
120        library: FT_Library,
121        file_base: *const c_uchar,
122        file_size: c_long,
123        face_index: c_long,
124        aface: *mut FT_Face,
125    ) -> FT_Error;
126    pub fn FT_Open_Face(
127        library: FT_Library,
128        args: *const FT_Open_Args,
129        face_index: c_long,
130        aface: *mut FT_Face,
131    ) -> FT_Error;
132    pub fn FT_Done_Face(face: FT_Face) -> FT_Error;
133    pub fn FT_Get_First_Char(face: FT_Face, agindex: *mut c_uint) -> c_ulong;
134    pub fn FT_Get_Next_Char(face: FT_Face, charcode: c_ulong, agindex: *mut c_uint) -> c_ulong;
135    pub fn FT_Get_Postscript_Name(face: FT_Face) -> *const c_uchar;
136    pub fn FT_Get_Sfnt_Name_Count(face: FT_Face) -> c_uint;
137    pub fn FT_Get_Sfnt_Name(face: FT_Face, idx: c_uint, aname: *mut FT_SfntName) -> FT_Error;
138}
139
140extern "C" fn ft_alloc(_memory: FT_Memory, size: c_long) -> *mut c_void {
141    unsafe { libc::malloc(size as size_t) }
142}
143
144extern "C" fn ft_free(_memory: FT_Memory, block: *mut c_void) {
145    unsafe { libc::free(block) }
146}
147
148extern "C" fn ft_realloc(
149    _memory: FT_Memory,
150    _cur_size: c_long,
151    new_size: c_long,
152    block: *mut c_void,
153) -> *mut c_void {
154    unsafe { libc::realloc(block, new_size as size_t) }
155}
156
157pub static FT_MEMORY: FT_MemoryRec =
158    FT_MemoryRec { user: 0, alloc: ft_alloc, free: ft_free, realloc: ft_realloc };
freetype_ffi/lib.rs

freetype_ffi/
lib.rs
