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del: 移除安卓支持

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mofeng-git
2026-07-14 21:01:47 +08:00
parent 139064de35
commit 1ded7a8a66
88 changed files with 299 additions and 7107 deletions
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52
libs/v4l2r/Android.bp
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@@ -1,52 +0,0 @@
// This file is generated by cargo_embargo.
// Do not modify this file because the changes will be overridden on upgrade.
package {
default_applicable_licenses: ["external_rust_crates_v4l2r_license"],
}
rust_library {
name: "libv4l2r",
crate_name: "v4l2r",
cargo_env_compat: true,
cargo_pkg_version: "0.0.7",
crate_root: "src/lib.rs",
edition: "2021",
rustlibs: [
"libbitflags",
"liblog_rust",
"libnix",
"libthiserror",
],
proc_macros: ["libenumn"],
apex_available: [
"//apex_available:platform",
"//apex_available:anyapex",
],
product_available: true,
vendor_available: true,
// Bindgen-generated bindings of our local videodev2.h.
srcs: [":libv4l2r_bindgen"],
}
rust_test {
name: "v4l2r_test_src_lib",
crate_name: "v4l2r",
cargo_env_compat: true,
cargo_pkg_version: "0.0.7",
crate_root: "src/lib.rs",
test_suites: ["general-tests"],
auto_gen_config: true,
edition: "2021",
rustlibs: [
"libbitflags",
"liblog_rust",
"libnix",
"libthiserror",
],
proc_macros: ["libenumn"],
// Bindgen-generated bindings of our local videodev2.h.
srcs: [":libv4l2r_bindgen"],
}

4
libs/v4l2r/README.md
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@@ -17,7 +17,3 @@ parts are intentionally removed here so this dependency stays scoped to capture.
`cargo build` generates V4L2 bindings from the vendored Linux UAPI headers in
`include/`.
For Android targets, the build script uses the Android NDK sysroot. Set one of
`ANDROID_NDK_HOME`, `ANDROID_NDK_ROOT`, `NDK_HOME`, `ANDROID_HOME`, or
`ANDROID_SDK_ROOT` if the NDK cannot be found automatically.

2
libs/v4l2r/bindgen.rs
View File

@@ -1,7 +1,7 @@
// This file defines the customizations to the bindgen builder used to generate the v4l2r
// bindings.
//
// It is meant to be included from `lib/build.rs` and `android/build.rs`.
// It is meant to be included from `build.rs`.
#[derive(Debug)]
/// Workaround for https://github.com/rust-lang/rust-bindgen/issues/753.

126
libs/v4l2r/build.rs
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@@ -3,7 +3,7 @@ use std::path::PathBuf;
include!("bindgen.rs");
/// Vendored Linux UAPI include root used for non-Android targets.
/// Vendored Linux UAPI include root.
const VENDORED_INCLUDE_DIR: &str = "include";
/// Wrapper file to use as input of bindgen.
@@ -13,28 +13,16 @@ const WRAPPER_H: &str = "v4l2r_wrapper.h";
const FIX753_H: &str = "fix753.h";
fn main() {
let target = env::var("TARGET").unwrap_or_default();
let is_android = target.contains("android");
let include_root = if is_android {
android_sysroot().join("usr/include")
} else {
let include_root =
PathBuf::from(env::var("CARGO_MANIFEST_DIR").expect("`CARGO_MANIFEST_DIR` is not set"))
.join(VENDORED_INCLUDE_DIR)
};
.join(VENDORED_INCLUDE_DIR);
let videodev2_h = include_root.join("linux/videodev2.h");
println!("cargo::rerun-if-env-changed=ANDROID_NDK_HOME");
println!("cargo::rerun-if-env-changed=ANDROID_NDK_ROOT");
println!("cargo::rerun-if-env-changed=NDK_HOME");
println!("cargo::rerun-if-env-changed=ANDROID_HOME");
println!("cargo::rerun-if-env-changed=ANDROID_SDK_ROOT");
println!("cargo::rerun-if-env-changed=CARGO_NDK_PLATFORM");
println!("cargo::rerun-if-changed={}", videodev2_h.display());
println!("cargo::rerun-if-changed={}", FIX753_H);
println!("cargo::rerun-if-changed={}", WRAPPER_H);
let mut clang_args = vec![
let clang_args = vec![
format!("-I{}", include_root.display()),
#[cfg(all(feature = "arch64", not(feature = "arch32")))]
"--target=x86_64-linux-gnu".into(),
@@ -42,10 +30,6 @@ fn main() {
"--target=i686-linux-gnu".into(),
];
if is_android {
clang_args.extend(android_clang_args(&target));
}
let bindings = v4l2r_bindgen_builder(bindgen::Builder::default())
.header(WRAPPER_H)
.clang_args(clang_args)
@@ -57,105 +41,3 @@ fn main() {
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}
fn android_clang_args(target: &str) -> Vec<String> {
let ndk = android_ndk_home();
let toolchain = ndk.join("toolchains/llvm/prebuilt").join(host_tag());
let sysroot = toolchain.join("sysroot");
let clang_include = toolchain
.join("lib/clang")
.join(clang_version(&toolchain))
.join("include");
let api = env::var("CARGO_NDK_PLATFORM")
.ok()
.and_then(|value| value.parse::<u32>().ok())
.unwrap_or(21);
let clang_target = android_clang_target(target);
vec![
format!("--target={clang_target}"),
format!("--sysroot={}", sysroot.display()),
format!("-D__ANDROID_API__={api}"),
format!("-isystem{}", clang_include.display()),
format!("-isystem{}", sysroot.join("usr/include").display()),
format!(
"-isystem{}",
sysroot.join("usr/include").join(clang_target).display()
),
]
}
fn android_clang_target(target: &str) -> &'static str {
match target {
"aarch64-linux-android" => "aarch64-linux-android",
"armv7-linux-androideabi" => "armv7a-linux-androideabi",
"i686-linux-android" => "i686-linux-android",
"x86_64-linux-android" => "x86_64-linux-android",
other => panic!("unsupported Android target for v4l2r bindgen: {other}"),
}
}
fn android_sysroot() -> PathBuf {
android_ndk_home()
.join("toolchains/llvm/prebuilt")
.join(host_tag())
.join("sysroot")
}
fn android_ndk_home() -> PathBuf {
for key in ["ANDROID_NDK_HOME", "ANDROID_NDK_ROOT", "NDK_HOME"] {
if let Ok(value) = env::var(key) {
return PathBuf::from(value);
}
}
for key in ["ANDROID_HOME", "ANDROID_SDK_ROOT"] {
if let Ok(value) = env::var(key) {
let ndk_dir = PathBuf::from(value).join("ndk");
if let Some(newest) = newest_child_dir(&ndk_dir) {
return newest;
}
}
}
panic!(
"v4l2r Android bindgen requires ANDROID_NDK_HOME, ANDROID_NDK_ROOT, NDK_HOME, \
or ANDROID_HOME/ANDROID_SDK_ROOT with an ndk directory"
);
}
fn newest_child_dir(path: &PathBuf) -> Option<PathBuf> {
let mut entries = std::fs::read_dir(path)
.ok()?
.filter_map(|entry| entry.ok())
.map(|entry| entry.path())
.filter(|path| path.is_dir())
.collect::<Vec<_>>();
entries.sort();
entries.pop()
}
fn host_tag() -> &'static str {
if cfg!(target_os = "linux") {
"linux-x86_64"
} else if cfg!(target_os = "macos") {
"darwin-x86_64"
} else if cfg!(target_os = "windows") {
"windows-x86_64"
} else {
panic!("unsupported host OS for Android NDK");
}
}
fn clang_version(toolchain: &PathBuf) -> String {
let clang_dir = toolchain.join("lib/clang");
let mut entries = std::fs::read_dir(&clang_dir)
.unwrap_or_else(|err| panic!("failed to read {}: {err}", clang_dir.display()))
.filter_map(|entry| entry.ok())
.map(|entry| entry.file_name().to_string_lossy().into_owned())
.collect::<Vec<_>>();
entries.sort();
entries
.pop()
.unwrap_or_else(|| panic!("no clang resource directory in {}", clang_dir.display()))
}

6
libs/v4l2r/v4l2r_wrapper.h
View File

@@ -1,9 +1,3 @@
#ifdef __ANDROID__
#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>
#endif
#include <linux/videodev2.h>
#define MARK_FIX_753(name) const unsigned long int Fix753_##name = name;