From 2f441f4669eb0c64dd9d521006971ecc3786d2d6 Mon Sep 17 00:00:00 2001
From: GHOSCHT <31184695+GHOSCHT@users.noreply.github.com>
Date: Wed, 30 Aug 2023 13:04:00 +0200
Subject: [PATCH] Implement set_default_sink with pulseaudio

---
 Cargo.lock   | 162 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml   |   4 ++
 src/pulse.rs |  79 +++++++++++++++++++++++++
 3 files changed, 245 insertions(+)
 create mode 100644 src/pulse.rs

diff --git a/Cargo.lock b/Cargo.lock
index 5b058fe..94fedcf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,18 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "darling"
 version = "0.14.4"
@@ -76,6 +88,12 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -103,6 +121,12 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -118,6 +142,16 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
+[[package]]
+name = "indexmap"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5477fe2230a79769d8dc68e0eabf5437907c0457a5614a9e8dddb67f65eb65d"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
 [[package]]
 name = "itertools"
 version = "0.11.0"
@@ -142,6 +176,39 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "libpulse-binding"
+version = "2.28.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3557a2dfc380c8f061189a01c6ae7348354e0c9886038dc6c171219c08eaff"
+dependencies = [
+ "bitflags",
+ "libc",
+ "libpulse-sys",
+ "num-derive",
+ "num-traits",
+ "winapi",
+]
+
+[[package]]
+name = "libpulse-sys"
+version = "1.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc19e110fbf42c17260d30f6d3dc545f58491c7830d38ecb9aaca96e26067a9b"
+dependencies = [
+ "libc",
+ "num-derive",
+ "num-traits",
+ "pkg-config",
+ "winapi",
+]
+
+[[package]]
+name = "memchr"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f478948fd84d9f8e86967bf432640e46adfb5a4bd4f14ef7e864ab38220534ae"
+
 [[package]]
 name = "mpris"
 version = "2.0.1"
@@ -155,12 +222,35 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "num-derive"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "876a53fff98e03a936a674b29568b0e605f06b29372c2489ff4de23f1949743d"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.33",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f30b0abd723be7e2ffca1272140fac1a2f084c77ec3e123c192b66af1ee9e6c2"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "pico_kontroller"
 version = "0.1.0"
 dependencies = [
  "itertools",
+ "libpulse-binding",
  "mpris",
+ "serde",
+ "toml",
 ]
 
 [[package]]
@@ -193,6 +283,35 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "serde"
+version = "1.0.188"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf9e0fcba69a370eed61bcf2b728575f726b50b55cba78064753d708ddc7549e"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.188"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4eca7ac642d82aa35b60049a6eccb4be6be75e599bd2e9adb5f875a737654af2"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.33",
+ "syn 2.0.29",
+]
+
+[[package]]
+name = "serde_spanned"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96426c9936fd7a0124915f9185ea1d20aa9445cc9821142f0a73bc9207a2e186"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -261,6 +380,40 @@ dependencies = [
  "syn 2.0.29",
 ]
 
+[[package]]
+name = "toml"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17e963a819c331dcacd7ab957d80bc2b9a9c1e71c804826d2f283dd65306542"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cda73e2f1397b1262d6dfdcef8aafae14d1de7748d66822d3bfeeb6d03e5e4b"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.19.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8123f27e969974a3dfba720fdb560be359f57b44302d280ba72e76a74480e8a"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.11"
@@ -300,3 +453,12 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winnow"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c2e3184b9c4e92ad5167ca73039d0c42476302ab603e2fec4487511f38ccefc"
+dependencies = [
+ "memchr",
+]
diff --git a/Cargo.toml b/Cargo.toml
index d142144..292fa20 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,4 +7,8 @@ edition = "2021"
 
 [dependencies]
 itertools = "0.11.0"
+libpulse-binding = "2.28.1"
 mpris = "2.0.1"
+serde = {version ="1.0.188", features = ["derive"]}
+toml = "0.7.6"
+
diff --git a/src/pulse.rs b/src/pulse.rs
new file mode 100644
index 0000000..013e53d
--- /dev/null
+++ b/src/pulse.rs
@@ -0,0 +1,79 @@
+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::proplist::Proplist;
+use std::cell::RefCell;
+use std::ops::Deref;
+use std::rc::Rc;
+
+pub fn set_default_sink(name: &str) {
+    let mut proplist = Proplist::new().unwrap();
+    proplist
+        .set_str(
+            pulse::proplist::properties::APPLICATION_NAME,
+            "picoKontroller",
+        )
+        .unwrap();
+
+    let mainloop = Rc::new(RefCell::new(
+        Mainloop::new().expect("Failed to create mainloop"),
+    ));
+
+    let context = Rc::new(RefCell::new(
+        Context::new_with_proplist(
+            mainloop.borrow().deref(),
+            "picoKontrollerContext",
+            &proplist,
+        )
+        .expect("Failed to create new context"),
+    ));
+
+    context
+        .borrow_mut()
+        .connect(None, ContextFlagSet::NOFLAGS, None)
+        .expect("Failed to connect context");
+
+    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...");
+                return;
+            }
+            _ => {}
+        }
+    }
+
+    let op = context.borrow_mut().set_default_sink(name, |_| {});
+    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;
+            }
+            _ => {}
+        }
+    }
+
+    mainloop.borrow_mut().quit(Retval(0));
+}