Wrap more methods to get and set properties of ANativeWindow. (78c6534a) · Commits · e / os / android_frameworks_native

libs/nativewindow/rust/Android.bp

+2 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ rust_bindgen {
		source_stem: "bindings",
		bindgen_flags: [
		"--constified-enum-module=AHardwareBuffer_Format",
		"--bitfield-enum=ADataSpace",
		"--bitfield-enum=AHardwareBuffer_UsageFlags",

		"--allowlist-file=./nativewindow/include/.\\.h",
		@@ -110,6 +111,7 @@ rust_defaults {
		srcs: ["src/lib.rs"],
		rustlibs: [
		"libbinder_rs",
		"libbitflags",
		"libnativewindow_bindgen",
		],
		}

libs/nativewindow/rust/src/surface.rs

+112 −3

Original line number	Diff line number	Diff line
		@@ -20,10 +20,14 @@ use binder::{
		unstable_api::{status_result, AsNative},
		StatusCode,
		};
		use bitflags::bitflags;
		use nativewindow_bindgen::{
		AHardwareBuffer_Format, ANativeWindow, ANativeWindow_acquire, ANativeWindow_getFormat,
		ANativeWindow_getHeight, ANativeWindow_getWidth, ANativeWindow_readFromParcel,
		ANativeWindow_release, ANativeWindow_writeToParcel,
		ADataSpace, AHardwareBuffer_Format, ANativeWindow, ANativeWindow_acquire,
		ANativeWindow_getBuffersDataSpace, ANativeWindow_getBuffersDefaultDataSpace,
		ANativeWindow_getFormat, ANativeWindow_getHeight, ANativeWindow_getWidth,
		ANativeWindow_readFromParcel, ANativeWindow_release, ANativeWindow_setBuffersDataSpace,
		ANativeWindow_setBuffersGeometry, ANativeWindow_setBuffersTransform,
		ANativeWindow_writeToParcel,
		};
		use std::error::Error;
		use std::fmt::{self, Debug, Display, Formatter};
		@@ -60,6 +64,95 @@ impl Surface {
		let format = unsafe { ANativeWindow_getFormat(self.0.as_ptr()) };
		format.try_into().map_err(\|_\| ErrorCode(format))
		}

		/// Changes the format and size of the window buffers.
		///
		/// The width and height control the number of pixels in the buffers, not the dimensions of the
		/// window on screen. If these are different than the window's physical size, then its buffer
		/// will be scaled to match that size when compositing it to the screen. The width and height
		/// must be either both zero or both non-zero. If both are 0 then the window's base value will
		/// come back in force.
		pub fn set_buffers_geometry(
		&mut self,
		width: i32,
		height: i32,
		format: AHardwareBuffer_Format::Type,
		) -> Result<(), ErrorCode> {
		// SAFETY: The ANativeWindow pointer we pass is guaranteed to be non-null and valid because
		// it must have been allocated by `ANativeWindow_allocate` or `ANativeWindow_readFromParcel`
		// and we have not yet released it.
		let status = unsafe {
		ANativeWindow_setBuffersGeometry(
		self.0.as_ptr(),
		width,
		height,
		format.try_into().expect("Invalid format"),
		)
		};

		if status == 0 {
		Ok(())
		} else {
		Err(ErrorCode(status))
		}
		}

		/// Sets a transfom that will be applied to future buffers posted to the window.
		pub fn set_buffers_transform(&mut self, transform: Transform) -> Result<(), ErrorCode> {
		// SAFETY: The ANativeWindow pointer we pass is guaranteed to be non-null and valid because
		// it must have been allocated by `ANativeWindow_allocate` or `ANativeWindow_readFromParcel`
		// and we have not yet released it.
		let status =
		unsafe { ANativeWindow_setBuffersTransform(self.0.as_ptr(), transform.bits() as i32) };

		if status == 0 {
		Ok(())
		} else {
		Err(ErrorCode(status))
		}
		}

		/// Sets the data space that will be applied to future buffers posted to the window.
		pub fn set_buffers_data_space(&mut self, data_space: ADataSpace) -> Result<(), ErrorCode> {
		// SAFETY: The ANativeWindow pointer we pass is guaranteed to be non-null and valid because
		// it must have been allocated by `ANativeWindow_allocate` or `ANativeWindow_readFromParcel`
		// and we have not yet released it.
		let status = unsafe { ANativeWindow_setBuffersDataSpace(self.0.as_ptr(), data_space.0) };

		if status == 0 {
		Ok(())
		} else {
		Err(ErrorCode(status))
		}
		}

		/// Gets the data space of the buffers in the window.
		pub fn get_buffers_data_space(&mut self) -> Result<ADataSpace, ErrorCode> {
		// SAFETY: The ANativeWindow pointer we pass is guaranteed to be non-null and valid because
		// it must have been allocated by `ANativeWindow_allocate` or `ANativeWindow_readFromParcel`
		// and we have not yet released it.
		let data_space = unsafe { ANativeWindow_getBuffersDataSpace(self.0.as_ptr()) };

		if data_space < 0 {
		Err(ErrorCode(data_space))
		} else {
		Ok(ADataSpace(data_space))
		}
		}

		/// Gets the default data space of the buffers in the window as set by the consumer.
		pub fn get_buffers_default_data_space(&mut self) -> Result<ADataSpace, ErrorCode> {
		// SAFETY: The ANativeWindow pointer we pass is guaranteed to be non-null and valid because
		// it must have been allocated by `ANativeWindow_allocate` or `ANativeWindow_readFromParcel`
		// and we have not yet released it.
		let data_space = unsafe { ANativeWindow_getBuffersDefaultDataSpace(self.0.as_ptr()) };

		if data_space < 0 {
		Err(ErrorCode(data_space))
		} else {
		Ok(ADataSpace(data_space))
		}
		}
		}

		impl Drop for Surface {
		@@ -141,3 +234,19 @@ impl Display for ErrorCode {
		write!(f, "Error {}", self.0)
		}
		}

		bitflags! {
		/// Transforms that can be applied to buffers as they are displayed to a window.
		#[derive(Copy, Clone, Debug, Eq, PartialEq)]
		pub struct Transform: u32 {
		const MIRROR_HORIZONTAL = 0x01;
		const MIRROR_VERTICAL = 0x02;
		const ROTATE_90 = 0x04;
		}
		}

		impl Transform {
		pub const IDENTITY: Self = Self::empty();
		pub const ROTATE_180: Self = Self::MIRROR_HORIZONTAL.union(Self::MIRROR_VERTICAL);
		pub const ROTATE_270: Self = Self::ROTATE_180.union(Self::ROTATE_90);
		}