pipewire: add pipewire client
This commit is contained in:
Julian Orth
parent
2512470231
commit
2568b7b1f5
19 changed files with 4573 additions and 2 deletions
304
src/pipewire/pw_formatter.rs
Normal file
304
src/pipewire/pw_formatter.rs
Normal file
|
|
@ -0,0 +1,304 @@
|
|||
use {
|
||||
crate::pipewire::pw_pod::{
|
||||
PW_TYPE_Array, PW_TYPE_Bitmap, PW_TYPE_Bool, PW_TYPE_Bytes, PW_TYPE_Choice, PW_TYPE_Double,
|
||||
PW_TYPE_Fd, PW_TYPE_Float, PW_TYPE_Fraction, PW_TYPE_Id, PW_TYPE_Int, PW_TYPE_Long,
|
||||
PW_TYPE_None, PW_TYPE_Object, PW_TYPE_Rectangle, PW_TYPE_String, PW_TYPE_Struct,
|
||||
PwChoiceType, PwPodObjectType, PwPodType, PwPropFlag,
|
||||
},
|
||||
std::rc::Rc,
|
||||
uapi::OwnedFd,
|
||||
};
|
||||
|
||||
pub struct PwFormatter<'a> {
|
||||
data: &'a mut Vec<u8>,
|
||||
fds: &'a mut Vec<Rc<OwnedFd>>,
|
||||
array: bool,
|
||||
first: bool,
|
||||
}
|
||||
|
||||
impl<'a> PwFormatter<'a> {
|
||||
pub fn write_bool(&mut self, b: bool) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&4u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_Bool.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&(b as u32)));
|
||||
if !self.array {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
}
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
pub fn write_id(&mut self, id: u32) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&4u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_Id.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&id));
|
||||
if !self.array {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
}
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
pub fn write_object<F>(&mut self, ty: PwPodObjectType, id: u32, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwObjectFormatter),
|
||||
{
|
||||
let start = self.data.len();
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Object.0));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&ty.0));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&id));
|
||||
let mut fmt = PwObjectFormatter {
|
||||
data: self.data,
|
||||
fds: self.fds,
|
||||
};
|
||||
f(&mut fmt);
|
||||
let len = (self.data.len() - start - 8) as u32;
|
||||
self.data[start..start + 4].copy_from_slice(uapi::as_bytes(&len));
|
||||
}
|
||||
|
||||
pub fn write_uint(&mut self, int: u32) {
|
||||
self.write_int(int as _)
|
||||
}
|
||||
|
||||
pub fn write_int(&mut self, int: i32) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&4u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_Int.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&int));
|
||||
if !self.array {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
}
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
pub fn write_ulong(&mut self, long: u64) {
|
||||
self.write_long(long as _)
|
||||
}
|
||||
|
||||
pub fn write_long(&mut self, long: i64) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&8u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_Long.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&long));
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_float(&mut self, float: f32) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&4u32));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Float.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&float));
|
||||
if !self.array {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
}
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_double(&mut self, double: f64) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&8u32));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Double.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&double));
|
||||
}
|
||||
|
||||
pub fn write_string<S: AsRef<[u8]> + ?Sized>(&mut self, s: &S) {
|
||||
let s = s.as_ref();
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&(s.len() as u32 + 1)));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_String.0));
|
||||
self.data.extend_from_slice(s);
|
||||
self.data.push(0);
|
||||
self.pad();
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_bytes(&mut self, s: &[u8]) {
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&(s.len() as u32)));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Bytes.0));
|
||||
self.data.extend_from_slice(s);
|
||||
self.pad();
|
||||
}
|
||||
|
||||
pub fn write_rectangle(&mut self, width: u32, height: u32) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&8u32));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Rectangle.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&width));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&height));
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_fraction(&mut self, num: i32, denom: i32) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&8u32));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Fraction.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&num));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&denom));
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
pub fn write_none(&mut self) {
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_None.0));
|
||||
}
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_bitmap(&mut self, s: &[u8]) {
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&(s.len() as u32)));
|
||||
self.data
|
||||
.extend_from_slice(uapi::as_bytes(&PW_TYPE_Bitmap.0));
|
||||
self.data.extend_from_slice(s);
|
||||
self.pad();
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_fd(&mut self, fd: &Rc<OwnedFd>) {
|
||||
let pos = self.fds.len() as u64;
|
||||
self.fds.push(fd.clone());
|
||||
if !self.array || self.first {
|
||||
self.data.extend_from_slice(uapi::as_bytes(&8u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&PW_TYPE_Fd.0));
|
||||
}
|
||||
self.data.extend_from_slice(uapi::as_bytes(&pos));
|
||||
self.first = false;
|
||||
}
|
||||
|
||||
pub fn write_struct<F>(&mut self, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
self.write_compound(PW_TYPE_Struct, |fmt| {
|
||||
let mut fmt = PwFormatter {
|
||||
data: fmt.data,
|
||||
fds: fmt.fds,
|
||||
array: false,
|
||||
first: false,
|
||||
};
|
||||
f(&mut fmt);
|
||||
});
|
||||
}
|
||||
|
||||
#[allow(dead_code)]
|
||||
pub fn write_array<F>(&mut self, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
self.write_compound(PW_TYPE_Array, |fmt| {
|
||||
fmt.write_array_body(f);
|
||||
});
|
||||
self.pad();
|
||||
}
|
||||
|
||||
fn write_array_body<F>(&mut self, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
let mut fmt = PwFormatter {
|
||||
data: self.data,
|
||||
fds: self.fds,
|
||||
array: true,
|
||||
first: true,
|
||||
};
|
||||
f(&mut fmt);
|
||||
if fmt.first {
|
||||
fmt.write_none();
|
||||
}
|
||||
}
|
||||
|
||||
pub fn write_choice<F>(&mut self, ty: PwChoiceType, flags: u32, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
self.write_compound(PW_TYPE_Choice, |fmt| {
|
||||
fmt.data.extend_from_slice(uapi::as_bytes(&ty.0));
|
||||
fmt.data.extend_from_slice(uapi::as_bytes(&flags));
|
||||
fmt.write_array_body(f);
|
||||
});
|
||||
self.pad();
|
||||
}
|
||||
|
||||
fn write_compound<F>(&mut self, ty: PwPodType, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
let start = self.data.len();
|
||||
self.data.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&ty.0));
|
||||
f(self);
|
||||
let len = (self.data.len() - start - 8) as u32;
|
||||
self.data[start..start + 4].copy_from_slice(uapi::as_bytes(&len));
|
||||
}
|
||||
|
||||
fn pad(&mut self) {
|
||||
let todo = self.data.len().wrapping_neg() & 7;
|
||||
self.data.extend_from_slice(&uapi::as_bytes(&0u64)[..todo]);
|
||||
}
|
||||
}
|
||||
|
||||
pub struct PwObjectFormatter<'a> {
|
||||
data: &'a mut Vec<u8>,
|
||||
fds: &'a mut Vec<Rc<OwnedFd>>,
|
||||
}
|
||||
|
||||
impl<'a> PwObjectFormatter<'a> {
|
||||
pub fn write_property<F>(&mut self, key: u32, flags: PwPropFlag, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
self.data.extend_from_slice(uapi::as_bytes(&key));
|
||||
self.data.extend_from_slice(uapi::as_bytes(&flags.0));
|
||||
let mut fmt = PwFormatter {
|
||||
data: self.data,
|
||||
fds: self.fds,
|
||||
array: false,
|
||||
first: false,
|
||||
};
|
||||
f(&mut fmt);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn format<F>(buf: &mut Vec<u8>, fds: &mut Vec<Rc<OwnedFd>>, id: u32, opcode: u8, seq: u32, f: F)
|
||||
where
|
||||
F: FnOnce(&mut PwFormatter),
|
||||
{
|
||||
buf.clear();
|
||||
buf.extend_from_slice(uapi::as_bytes(&id));
|
||||
buf.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
buf.extend_from_slice(uapi::as_bytes(&seq));
|
||||
buf.extend_from_slice(uapi::as_bytes(&0u32));
|
||||
let mut fmt = PwFormatter {
|
||||
data: buf,
|
||||
fds,
|
||||
array: false,
|
||||
first: false,
|
||||
};
|
||||
f(&mut fmt);
|
||||
let p2 = (buf.len() - 16) as u32 | ((opcode as u32) << 24);
|
||||
buf[4..8].copy_from_slice(uapi::as_bytes(&p2));
|
||||
let nfds = fds.len() as u32;
|
||||
buf[12..16].copy_from_slice(uapi::as_bytes(&nfds));
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue