From cc2ff29def5534aec28345136a7b49ddabc83071 Mon Sep 17 00:00:00 2001
From: GHOSCHT <31184695+GHOSCHT@users.noreply.github.com>
Date: Tue, 30 Apr 2024 20:21:40 +0200
Subject: [PATCH] Add basic implementation of pulse mainloop

---
 src/pulse_client.rs | 98 +++++++++++++++++++++++++++------------------
 1 file changed, 60 insertions(+), 38 deletions(-)

diff --git a/src/pulse_client.rs b/src/pulse_client.rs
index ac97b8b..c7b1436 100644
--- a/src/pulse_client.rs
+++ b/src/pulse_client.rs
@@ -1,13 +1,15 @@
 extern crate libpulse_binding as pulse;
+
 use pulse::context::{Context, FlagSet as ContextFlagSet};
-use pulse::def::Retval;
-use pulse::mainloop::standard::{IterateResult, Mainloop};
+use pulse::mainloop::threaded::Mainloop;
 use pulse::proplist::Proplist;
+use regex::Regex;
 use std::cell::RefCell;
 use std::ops::Deref;
 use std::rc::Rc;
+use std::time;
 
-pub fn set_default_sink<'a>(name: &'a str) {
+pub fn run() {
     let mut proplist = Proplist::new().unwrap();
     proplist
         .set_str(
@@ -29,60 +31,80 @@ pub fn set_default_sink<'a>(name: &'a str) {
         .expect("Failed to create new context"),
     ));
 
+    // Context state change callback
+    {
+        let ml_ref = Rc::clone(&mainloop);
+        let context_ref = Rc::clone(&context);
+        context
+            .borrow_mut()
+            .set_state_callback(Some(Box::new(move || {
+                let state = unsafe { (*context_ref.as_ptr()).get_state() };
+                match state {
+                    pulse::context::State::Ready
+                    | pulse::context::State::Failed
+                    | pulse::context::State::Terminated => unsafe {
+                        (*ml_ref.as_ptr()).signal(false);
+                    },
+                    _ => {}
+                }
+            })));
+    }
+
     context
         .borrow_mut()
         .connect(None, ContextFlagSet::NOFLAGS, None)
         .expect("Failed to connect context");
 
+    mainloop.borrow_mut().lock();
+    mainloop
+        .borrow_mut()
+        .start()
+        .expect("Failed to start mainloop");
+
+    // Wait for context to be ready
     loop {
-        match mainloop.borrow_mut().iterate(false) {
-            IterateResult::Quit(_) | IterateResult::Err(_) => {
-                eprintln!("Iterate state was not success, quitting...");
-                return;
-            }
-            IterateResult::Success(_) => {}
-        }
         match context.borrow().get_state() {
             pulse::context::State::Ready => {
                 break;
             }
             pulse::context::State::Failed | pulse::context::State::Terminated => {
                 eprintln!("Context state failed/terminated, quitting...");
+                mainloop.borrow_mut().unlock();
+                mainloop.borrow_mut().stop();
                 return;
             }
-            _ => {}
+            _ => {
+                mainloop.borrow_mut().wait();
+            }
         }
     }
+    context.borrow_mut().set_state_callback(None);
+    mainloop.borrow_mut().unlock();
 
-    let op = context
+    //---------------------
+    mainloop.borrow_mut().lock();
+
+    let sink_filter = Regex::new("USB_Audio_CODEC").expect("Creating RegEx failed");
+    let callback_context = context.clone();
+    context
         .borrow_mut()
-        .set_default_sink(name, |was_successful| match was_successful {
-            true => {
-                println!("Successfully set default sink");
-            }
-            false => {
-                eprintln!("Failed to set default sink");
-            }
-        });
-    loop {
-        match mainloop.borrow_mut().iterate(false) {
-            IterateResult::Quit(_) | IterateResult::Err(_) => {
-                eprintln!("Iterate state was not success, quitting...");
-                return;
-            }
-            IterateResult::Success(_) => {}
-        }
-        match op.get_state() {
-            pulse::operation::State::Done => {
-                break;
-            }
-            pulse::operation::State::Cancelled => {
-                eprintln!("Setting default sink was cancelled...");
-                return;
+        .introspect()
+        .get_sink_info_list(move |items_result| match items_result {
+            pulse::callbacks::ListResult::Item(item) => {
+                let matches_regex = sink_filter.is_match(item.name.as_ref().unwrap());
+                if matches_regex {
+                    let name = item.name.as_ref().unwrap();
+                    println!("Setting default sink to: {}", name);
+                    callback_context.borrow_mut().set_default_sink(name, |_| {});
+                }
             }
             _ => {}
-        }
-    }
+        });
 
-    mainloop.borrow_mut().quit(Retval(0));
+    mainloop.borrow_mut().unlock();
+    //---------------------
+
+    loop {
+        std::thread::sleep(time::Duration::from_secs(u64::MAX));
+    }
 }