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support to compile ftgrays/ftraster/gpac-evg
preparing for new renderer implementation
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{ | ||
"C_Cpp.default.defines": [ "STANDALONE_", | ||
"FALL_THROUGH=((void)0)", "FT_BEGIN_HEADER" ], | ||
"C_Cpp.default.includePath": [ "src/evg", "src/raster" ] | ||
} |
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fn main() { // https://doc.rust-lang.org/stable/cargo/reference/build-scripts.html | ||
// https://doc.rust-lang.org/stable/cargo/reference/build-scripts.html | ||
fn main() -> Result<(), Box<dyn std::error::Error>> { | ||
//println!("cargo:rerun-if-changed=build.rs"); // XXX: prevent re-run indead | ||
// By default, cargo always re-run the build script if any file within the package | ||
// is changed, and no any rerun-if instruction is emitted. | ||
println!("cargo:rerun-if-changed=src/"); | ||
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println!("cargo:rerun-if-changed=.git/index"); | ||
let output = std::process::Command::new("git") | ||
.args(["rev-parse", "--short", "HEAD"]).output().unwrap(); | ||
println!("cargo:rustc-env=BUILD_GIT_HASH={}", String::from_utf8(output.stdout).unwrap()); | ||
.args(["rev-parse", "--short", "HEAD"]).output()?; | ||
println!("cargo:rustc-env=BUILD_GIT_HASH={}", String::from_utf8(output.stdout)?); | ||
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println!("cargo:rustc-env=BUILD_TIMESTAMP={}", | ||
chrono::Local::now().format("%H:%M:%S%z %Y-%m-%d")); | ||
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//println!("cargo:rerun-if-changed=build.rs"); // XXX: prevent re-run indead | ||
#[cfg(feature = "cc")] { use std::path::PathBuf; | ||
#[derive(Debug)] struct DoctestComment; | ||
impl bindgen::callbacks::ParseCallbacks for DoctestComment { | ||
fn process_comment(&self, comment: &str) -> Option<String> { | ||
Some(format!("````c,ignore\n{comment}\n````")) // FIXME: | ||
} | ||
} | ||
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let module = "ftgrays"; | ||
cc::Build::new().flag("-std=c99").flag("-pedantic") | ||
.define("FALL_THROUGH", "((void)0)").file("src/raster/ftgrays.c") | ||
.opt_level(3).define("NDEBUG", None).file("src/raster/ftraster.c") | ||
.files(glob::glob("src/raster/stroke/*.c")?.filter_map(Result::ok)) | ||
.flag("-Wno-unused-variable")//.flag("-Wno-unused-function") | ||
.define("STANDALONE_", None).compile(module); | ||
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// The bindgen::Builder is the main entry point to bindgen, | ||
// and lets you build up options for the resulting bindings. | ||
bindgen::Builder::default().header("src/raster/ftmisc.h") | ||
.clang_arg(r"-DFT_CONFIG_STANDARD_LIBRARY_H=<stdlib.h>") | ||
.clang_arg("-DSTANDALONE_").header("src/raster/ftgrays.h") | ||
.clang_arg("-DFT_BEGIN_HEADER=").clang_arg("-DFT_END_HEADER=") | ||
.allowlist_item("FT_OUTLINE_.*|FT_RASTER_FLAG_.*|FT_CURVE_TAG.*") | ||
.layout_tests(false).derive_copy(false).allowlist_var("ft_standard_raster") | ||
.allowlist_var("ft_grays_raster").allowlist_type("FT_Outline|FT_Pixel_Mode") | ||
.default_enum_style(bindgen::EnumVariation::Rust { non_exhaustive: true }) | ||
.default_macro_constant_type(bindgen::MacroTypeVariation::Signed) | ||
.parse_callbacks(Box::new(DoctestComment)).generate_comments(false) // XXX: | ||
// Tell cargo to invalidate the built crate whenever any of the | ||
// included header files changed. | ||
.parse_callbacks(Box::new(bindgen::CargoCallbacks)).generate()? | ||
.write_to_file(PathBuf::from(std::env::var("OUT_DIR")?).join(format!("{module}.rs")))?; | ||
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/* ln -s /path/to/freetype2/{include/freetype/ftimage.h,src/smooth/ftgrays.[ch],\ | ||
src/raster/ft{misc.h,raster.c}} src/raster/ | ||
* ln -s /path/to/freetype2/src/{raster/ftmisc.h,base/ft{stroke,trigon}.c} src/raster/stroke/ | ||
* ln -s /path/to/freetype2/include/freetype/ft{stroke,trigon,image}.h src/raster/stroke/ | ||
* ln -s /path/to/gpac/src/evg/{ftgrays.c,rast_soft.h,stencil.c,surface.c,\ | ||
raster_{argb,rgb,565,yuv}.c},raster3d.c src/evg/ | ||
* ln -s /path/to/gpac/src/utils/{path2d{,_stroke},math,alloc,color,error}.c src/evg/ | ||
* ln -s /path/gpac/include/gpac/{evg,setup,constants,maths,color,path2d,\ | ||
tools,thread}.h src/evg/gpac/ | ||
* touch src/evg/gpac/{Remotery,config_file,configuration,main,module,version}.h | ||
*/ | ||
let module = "gpac_evg"; | ||
cc::Build::new().flag("-std=c17").flag("-Isrc/evg").define("GPAC_FIXED_POINT", None) | ||
.flag("-Wno-unused-parameter").define("GPAC_DISABLE_THREADS", None) | ||
.flag("-Wno-pointer-sign").define("GPAC_DISABLE_LOG", None) | ||
.files(glob::glob("src/evg/*.c")?.filter_map(Result::ok)) | ||
.opt_level(3).define("NDEBUG", None).compile(module); | ||
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bindgen::Builder::default().header("src/evg/gpac/evg.h").clang_arg("-Isrc/evg") | ||
.default_enum_style(bindgen::EnumVariation::Rust { non_exhaustive: true }) | ||
.clang_arg("-DGPAC_DISABLE_THREADS").allowlist_function("gf_evg_s.*") | ||
.layout_tests(false).derive_copy(false).allowlist_item("GF_LINE_.*") | ||
.clang_arg("-DGPAC_FIXED_POINT").allowlist_function("gf_path_.*") | ||
.parse_callbacks(Box::new(bindgen::CargoCallbacks)).generate()? | ||
.write_to_file(PathBuf::from(std::env::var("OUT_DIR")?).join(format!("{module}.rs")))?; | ||
} | ||
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Ok(()) | ||
} |
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use core::{ptr::null_mut, ffi::c_void}; | ||
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#[cfg(feature = "cc")] | ||
#[test] fn raster_evg() -> Result<(), Box<dyn std::error::Error>> { | ||
use intvg::gpac_evg::*; | ||
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unsafe { | ||
let surf = gf_evg_surface_new(Bool::GF_FALSE); | ||
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//let _err = gf_evg_surface_attach_to_buffer(surf, pixels, width, height, | ||
// pitch_x, pitch_y, GF_PixelFormat::GF_PIXEL_RGB); | ||
//let _err = gf_evg_surface_viewport(surf, x, y, w, h); | ||
//let _err = gf_evg_surface_clear(surf, rc, 0xAARRGGBB); | ||
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let path = gf_path_new(); | ||
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//gf_path_add_move_to(path, x, y); | ||
//gf_path_add_line_to(path, x, y); | ||
//gf_path_add_bezier(path, pts, nb_pts); | ||
//gf_path_add_cubic_to(path, c1_x, c1_y, c2_x, c2_y, x, y); | ||
//gf_path_add_quadratic_to(path, c_x, c_y, x, y); | ||
//gf_path_add_rect(path, ox, oy, w, h); | ||
//gf_path_add_ellipse(path, cx, cy, a_axis, b_axis); | ||
//gf_path_add_svg_arc_to(path, end_x, end_y, r_x, r_y, x_rotation, large_arc, sweep); | ||
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let _err = gf_path_close(path); | ||
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let pen = GF_PenSettings { | ||
width: 0, path_length: 0, cap: 1, join: 1, // XXX: | ||
align: 0, dash: 0, miterLimit: 0, dash_offset: 0, dash_set: null_mut(), | ||
}; | ||
let gpol = gf_path_get_outline(path, pen); | ||
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let stencil = gf_evg_stencil_new(GF_StencilType::GF_STENCIL_SOLID); | ||
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//let _err = gf_evg_stencil_set_brush_color(stencil, 0xAARRGGBB); | ||
//let _err = gf_evg_stencil_set_gradient_mode(stencil, | ||
// GF_GradientMode::GF_GRADIENT_MODE_PAD); | ||
//let _err = gf_evg_stencil_set_linear_gradient(stencil, start_x, start_y, end_x, end_y); | ||
//let _err = gf_evg_stencil_set_radial_gradient(stencil, cx, cy, fx, fy, x_radius, y_radius); | ||
//let _err = gf_evg_stencil_set_gradient_interpolation(stencil, pos, col, count); | ||
//let _err = gf_evg_stencil_set_alpha(stencil, alpha); | ||
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let _err = gf_evg_surface_set_path(surf, gpol); | ||
let _err = gf_evg_surface_fill(surf, stencil); | ||
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let _err = gf_evg_surface_set_path(surf, path); | ||
let _err = gf_evg_surface_fill(surf, stencil); | ||
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gf_path_del(gpol); | ||
gf_path_del(path); | ||
gf_evg_surface_delete(surf); | ||
gf_evg_stencil_delete(stencil); | ||
} | ||
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Ok(()) | ||
} | ||
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#[cfg(feature = "cc")] | ||
#[test] fn raster_ftgrays() -> Result<(), Box<dyn std::error::Error>> { | ||
use intvg::ftgrays::*; | ||
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let mut points = vec![ // FTDemo_Icon @freetype2/demo/src/ftcommon.c | ||
( 4, 8).into(), ( 4,10).into(), ( 8,12).into(), ( 8,52).into(), ( 4,54).into(), | ||
( 4,56).into(), (60,56).into(), (60,44).into(), (58,44).into(), (56,52).into(), | ||
(44,52).into(), (44,12).into(), (48,10).into(), (48, 8).into(), (32, 8).into(), | ||
(32,10).into(), (36,12).into(), (36,52).into(), (16,52).into(), (16,36).into(), | ||
(24,36).into(), (26,40).into(), (28,40).into(), (28,28).into(), (26,28).into(), | ||
(24,32).into(), (16,32).into(), (16,12).into(), (20,10).into(), (20, 8).into(), ]; | ||
let mut tags = vec![FT_CURVE_TAG_ON as i8; points.len()]; | ||
let mut contours = vec![29]; | ||
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let mut bitmap = FT_Bitmap { | ||
rows: 0, width: 0, pitch: 0, buffer: null_mut(), // FIXME: | ||
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pixel_mode: FT_Pixel_Mode::FT_PIXEL_MODE_LCD as u8, // FT_PIXEL_MODE_BGRA | ||
// https://docs.rs/bindgen/latest/bindgen/struct.Builder.html#enums | ||
// Not used currently, or only used with FT_PIXEL_MODE_GRAY | ||
palette_mode: 0, palette: null_mut(), num_grays: 0, | ||
}; | ||
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#[allow(unused)] | ||
unsafe extern "C" fn span_func(y: i32, count: i32, // TODO: solid/linear/radial/stroke | ||
spans: *const FT_Span, user: *mut c_void) { // The gray span drawing callback. | ||
let bitmap = user as *mut FT_Bitmap; assert!(0 < count); | ||
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for span in core::slice::from_raw_parts(spans, count as usize) { | ||
for x in span.x..span.len as i16 { | ||
// TODO: handle pixel at (x, y) with span.coverage (alpha) | ||
} | ||
} | ||
} | ||
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let outline = FT_Outline { | ||
n_points: points.len() as i16, points: points.as_mut_ptr(), tags: tags.as_mut_ptr(), | ||
n_contours: contours.len() as i16, contours: contours.as_mut_ptr(), | ||
flags: FT_OUTLINE_NONE, // XXX: FT_OUTLINE_IGNORE_DROPOUTS | ||
}; assert!(tags.len() == points.len()); | ||
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let mut params = FT_Raster_Params { | ||
source: &outline as *const _ as *const c_void, | ||
user: &mut bitmap as *mut _ as *mut c_void, gray_spans: Some(span_func), | ||
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// ftgrays.c: `ft_grays_raster` are typoed as `ft_gray_raster` in some comments. | ||
// ftimage.h: FT_Pos can be typed as `signed int` rather than `long`? // XXX: | ||
clip_box: FT_BBox { xMin: 0, yMin: 0, xMax: 0, yMax: 0 }, // FT_RASTER_FLAG_CLIP | ||
flags: FT_RASTER_FLAG_AA | FT_RASTER_FLAG_DIRECT, | ||
black_spans: None, bit_test: None, bit_set: None, // Unused | ||
target: null_mut(), // &bitmap, unused in direct mode | ||
}; let mut raster = null_mut(); | ||
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unsafe { // use of extern static (ft_grays_raster/ft_standard_raster) is unsafe | ||
let _ = ft_grays_raster.raster_new.unwrap()(null_mut(), &mut raster); | ||
//if res != 0 { panic!("raster_new failed: {}", res); } | ||
//ft_grays_raster.raster_reset.unwrap()(raster, null_mut(), 0); | ||
//ft_grays_raster.raster_set_mode.unwrap()(raster, 0, null_mut()); | ||
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let res = ft_grays_raster.raster_render.unwrap()(raster, &mut params); | ||
if res != 0 { panic!("raster_render failed: {res}"); } | ||
//ft_grays_raster.raster_done.unwrap()(raster); | ||
} | ||
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Ok(()) | ||
} |