hasufell/pnmixer-rust
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This commit is contained in:
Ospald, Julian 2017-06-29 13:43:32 +02:00
parent d83209e67f
commit 537ab6bafe
2 changed files with 15 additions and 10 deletions
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7
src/app_state.rs
View File

@ -40,15 +40,16 @@ impl AlsaCard {
}
};
let mixer = audio::get_mixer(&card)?;
let rc_mixer = RefCell::new(audio::get_mixer(&card)?);
let selem_id = audio::get_selem_by_name(
&mixer,
elem_name.unwrap_or(String::from("Master")),
).unwrap()
.get_id();
let vec_pollfd = PollDescriptors::get(&mixer)?;
// let watch_ids = vec![];
let watch_ids = audio::watch_poll_descriptors(vec_pollfd, rc_mixer);
/* TODO: callback is registered here, which must be unregistered
* when the mixer is destroyed!! */
let watch_ids = audio::watch_poll_descriptors(vec_pollfd, &mixer);
return Ok(AlsaCard {
_cannot_construct: (),

18
src/audio.rs
View File

@ -15,6 +15,7 @@ use std::convert::From;
use libc::pollfd;
use app_state;
use std::cell::RefCell;
use std::rc::Rc;
use std::mem;
use std::ptr;
use std::u8;
@ -126,12 +127,11 @@ pub fn set_mute(selem: &Selem, mute: bool) -> Result<()> {
pub fn watch_poll_descriptors(
polls: Vec<pollfd>,
mixer: RefCell<Mixer>,
mixer: &Mixer,
) -> Vec<c_uint> {
let mut watch_ids: Vec<c_uint> = vec![];
let mixer = mixer.into_inner();
let mixer_ptr = unsafe {
mem::transmute::<Mixer, *mut alsa_sys::snd_mixer_t>(mixer)
mem::transmute::<&Mixer, &*mut alsa_sys::snd_mixer_t>(mixer)
};
for poll in polls {
unsafe {
@ -143,7 +143,7 @@ pub fn watch_poll_descriptors(
glib_sys::G_IO_IN.bits() | glib_sys::G_IO_ERR.bits(),
).unwrap(),
Some(watch_cb),
mixer_ptr as glib_sys::gpointer,
*mixer_ptr as glib_sys::gpointer,
));
}
}
@ -168,20 +168,24 @@ extern fn watch_cb(
}
let mut sread: size_t = 1;
let mut buf: u8 = 0;
let mut buf: Vec<u8> = vec![0; 256];
while sread > 0 {
let stat: glib_sys::GIOStatus = unsafe {
glib_sys::g_io_channel_read_chars(
chan,
&mut buf as *mut u8,
buf.as_mut_ptr() as *mut u8,
256,
&mut sread as *mut size_t,
ptr::null_mut(),
)
};
match stat {
glib_sys::G_IO_STATUS_AGAIN => continue,
glib_sys::G_IO_STATUS_AGAIN => {
println!("G_IO_STATUS_AGAIN");
continue
},
glib_sys::G_IO_STATUS_NORMAL => println!("G_IO_STATUS_NORMAL"),
glib_sys::G_IO_STATUS_ERROR => println!("G_IO_STATUS_ERROR"),
glib_sys::G_IO_STATUS_EOF => println!("G_IO_STATUS_EOF"),