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// SPDX-License-Identifier: MIT
// Test is done in `src/subclass/efw_protocol.rs`.
use crate::*;
/// Trait containing the rest of [`struct@EfwProtocol`] methods.
///
/// # Implementors
///
/// [`EfwProtocol`][struct@crate::EfwProtocol], [`SndEfw`][struct@crate::SndEfw]
pub trait EfwProtocolExtManual {
/// Transfer asynchronous transaction for request frame of Echo Efw protocol and wait for response
///
/// matched to the command. The call results in [`responded`][struct@crate::EfwProtocol#responded]
/// signal with data of response.
/// ## `category`
/// One of category for the transaction.
/// ## `command`
/// One of commands for the transaction.
/// ## `args`
/// An array with elements for quadlet data as
/// arguments for command.
/// ## `params`
/// An array with elements for quadlet data
/// to save parameters in response. Callers should give it for buffer with enough space
/// against the request since this library performs no reallocation. Due to the reason, the
/// value of this argument should point to the pointer to the array and immutable. The
/// content of array is mutable for parameters in response.
/// ## `timeout_ms`
/// The timeout to wait for response.
///
/// # Returns
///
/// TRUE if the overall operation finished successfully, else FALSE.
#[doc(alias = "hitaki_efw_protocol_transaction")]
fn transaction(
&self,
category: u32,
command: u32,
args: &[u32],
params: &mut Vec<u32>,
timeout_ms: u32,
) -> Result<(), glib::Error>;
#[doc(alias = "responded")]
fn emit_responded(
&self,
version: u32,
seqnum: u32,
command: u32,
category: u32,
status: EfwProtocolError,
params: &[u32],
);
/// Emitted when the unit transfers asynchronous packet as response of Echo Audio Efw
/// transaction and the process successfully reads the content of response from ALSA Efw
/// driver.
/// ## `version`
/// The version of transaction protocol.
/// ## `seqnum`
/// The sequence number of response.
/// ## `category`
/// The value of category field in the response.
/// ## `command`
/// The value of command field in the response.
/// ## `status`
/// The status of response.
/// ## `params`
/// The array with quadlet elements
/// of parameters in response of Fireworks protocol.
#[doc(alias = "responded")]
fn connect_responded<F>(&self, f: F) -> SignalHandlerId
where
F: Fn(&Self, u32, u32, u32, u32, EfwProtocolError, &[u32]) + 'static;
}
impl<O: IsA<EfwProtocol>> EfwProtocolExtManual for O {
fn transaction(
&self,
category: u32,
command: u32,
args: &[u32],
params: &mut Vec<u32>,
timeout_ms: u32,
) -> Result<(), glib::Error> {
unsafe {
let mut param_count = params.len();
let mut error = std::ptr::null_mut();
let is_ok = ffi::hitaki_efw_protocol_transaction(
self.as_ref().to_glib_none().0,
category,
command,
args.as_ptr(),
args.len(),
&mut params.as_mut_ptr(),
&mut param_count,
timeout_ms,
&mut error,
);
assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
params.set_len(param_count);
if error.is_null() {
params.set_len(param_count);
Ok(())
} else {
Err(from_glib_full(error))
}
}
}
fn emit_responded(
&self,
version: u32,
seqnum: u32,
command: u32,
category: u32,
status: EfwProtocolError,
params: &[u32],
) {
let params_pointer = params.as_ptr() as *mut std::ffi::c_void;
let params_count = params.len() as u32;
self.emit_by_name::<()>(
"responded",
&[
&version,
&seqnum,
&command,
&category,
&status,
¶ms_pointer,
¶ms_count,
],
)
}
fn connect_responded<F>(&self, f: F) -> SignalHandlerId
where
F: Fn(&Self, u32, u32, u32, u32, EfwProtocolError, &[u32]) + 'static,
{
unsafe extern "C" fn responded_trampoline<P, F>(
this: *mut ffi::HitakiEfwProtocol,
version: u32,
seqnum: u32,
command: u32,
category: u32,
status: ffi::HitakiEfwProtocolError,
params: *const u32,
params_count: std::ffi::c_uint,
f: glib::ffi::gpointer,
) where
P: IsA<EfwProtocol>,
F: Fn(&P, u32, u32, u32, u32, EfwProtocolError, &[u32]) + 'static,
{
let f: &F = &*(f as *const F);
f(
&EfwProtocol::from_glib_borrow(this).unsafe_cast_ref(),
version,
seqnum,
command,
category,
from_glib(status),
std::slice::from_raw_parts(params, params_count as usize),
)
}
unsafe {
let f: std::boxed::Box<F> = std::boxed::Box::new(f);
connect_raw(
self.as_ptr() as *mut _,
c"responded".as_ptr() as *const _,
Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
responded_trampoline::<Self, F> as *const (),
)),
std::boxed::Box::into_raw(f),
)
}
}
}