libspa/pod/
command.rs

1// Copyright The pipewire-rs Contributors.
2// SPDX-License-Identifier: MIT
3
4use std::ptr::addr_of;
5
6use crate::{constants::ID_INVALID, pod::SpaTypes};
7
8#[derive(Debug)]
9pub enum CommandError {
10    WrongCommandType,
11}
12
13impl std::fmt::Display for CommandError {
14    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
15        match self {
16            Self::WrongCommandType => f.write_str("Wrong command type"),
17        }
18    }
19}
20
21impl std::error::Error for CommandError {}
22
23#[repr(transparent)]
24pub struct Command(spa_sys::spa_command);
25
26impl Command {
27    pub fn into_raw(self) -> spa_sys::spa_command {
28        self.0
29    }
30
31    pub fn from_raw(raw: spa_sys::spa_command) -> Self {
32        Self(raw)
33    }
34
35    pub fn as_raw_ptr(&self) -> *mut spa_sys::spa_command {
36        addr_of!(self.0).cast_mut()
37    }
38
39    pub fn type_(&self) -> SpaTypes {
40        unsafe { SpaTypes::from_raw(spa_sys::spa_command_type(self.as_raw_ptr())) }
41    }
42
43    pub fn id(&self, type_: SpaTypes) -> Result<u32, CommandError> {
44        let id = unsafe { spa_sys::spa_command_id(self.as_raw_ptr(), type_.as_raw()) };
45
46        if id == ID_INVALID {
47            Err(CommandError::WrongCommandType)
48        } else {
49            Ok(id)
50        }
51    }
52
53    pub fn init(type_: SpaTypes, id: u32) -> Self {
54        Self(unsafe { spa_sys::spa_command_init(type_.as_raw(), id) })
55    }
56}
libspa/pod/command.rs

libspa/pod/
command.rs
