scene_manager_structured_config/
scene_manager_structured_config_rust_config_lib_source.rs

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1use fidl::unpersist;
2use fidl_cf_sc_internal_scenemanagerstructuredconfig::Config as FidlConfig;
3use fuchsia_inspect::{ArrayProperty, Node};
4use fuchsia_runtime::{take_startup_handle, HandleInfo, HandleType};
5#[derive(Debug)]
6pub struct Config {
7    pub attach_a11y_view: bool,
8    pub display_pixel_density: String,
9    pub display_rotation: u64,
10    pub idle_threshold_ms: u64,
11    pub supported_input_devices: Vec<String>,
12    pub suspend_enabled: bool,
13    pub viewing_distance: String,
14}
15impl Config {
16    pub fn take_from_startup_handle() -> Self {
17        let config_vmo: zx::Vmo =
18            take_startup_handle(HandleInfo::new(HandleType::ComponentConfigVmo, 0))
19                .expect("Config VMO handle must be provided and cannot already have been taken.")
20                .into();
21        let config_size =
22            config_vmo.get_content_size().expect("must be able to read config vmo content size");
23        assert_ne!(config_size, 0, "config vmo must be non-empty");
24        let config_bytes =
25            config_vmo.read_to_vec(0, config_size).expect("must be able to read config vmo");
26        let checksum_length = u16::from_le_bytes([config_bytes[0], config_bytes[1]]) as usize;
27        let fidl_start = 2 + checksum_length;
28        let observed_checksum = &config_bytes[2..fidl_start];
29        let expected_checksum = vec![
30            0x54, 0xb2, 0x6f, 0x40, 0x5c, 0x8c, 0x28, 0x5d, 0x60, 0x79, 0xe5, 0x57, 0xd0, 0xb9,
31            0x58, 0x6d, 0x78, 0xad, 0x68, 0x60, 0x8a, 0xf7, 0x4a, 0xeb, 0xf2, 0x94, 0x07, 0xaf,
32            0x67, 0x9f, 0x95, 0xaa,
33        ];
34        assert_eq!(
35            observed_checksum, expected_checksum,
36            "checksum from config VMO does not match expected checksum"
37        );
38        let fidl_config: FidlConfig = unpersist(&config_bytes[fidl_start..])
39            .expect("must be able to parse bytes as config FIDL");
40        Self {
41            attach_a11y_view: fidl_config.attach_a11y_view,
42            display_pixel_density: fidl_config.display_pixel_density,
43            display_rotation: fidl_config.display_rotation,
44            idle_threshold_ms: fidl_config.idle_threshold_ms,
45            supported_input_devices: fidl_config.supported_input_devices,
46            suspend_enabled: fidl_config.suspend_enabled,
47            viewing_distance: fidl_config.viewing_distance,
48        }
49    }
50    pub fn record_inspect(&self, inspector_node: &Node) {
51        inspector_node.record_bool("attach_a11y_view", self.attach_a11y_view);
52        inspector_node.record_string("display_pixel_density", &self.display_pixel_density);
53        inspector_node.record_uint("display_rotation", self.display_rotation);
54        inspector_node.record_uint("idle_threshold_ms", self.idle_threshold_ms);
55        let arr = inspector_node
56            .create_string_array("supported_input_devices", self.supported_input_devices.len());
57        for i in 0..self.supported_input_devices.len() {
58            arr.set(i, &self.supported_input_devices[i]);
59        }
60        inspector_node.record(arr);
61        inspector_node.record_bool("suspend_enabled", self.suspend_enabled);
62        inspector_node.record_string("viewing_distance", &self.viewing_distance);
63    }
64}
scene_manager_structured_config/scene_manager_structured_config_rust_config_lib_source.rs

scene_manager_structured_config/
scene_manager_structured_config_rust_config_lib_source.rs
