feat: working version

src/utils.rs

@@ -0,0 +1,28 @@
+use anyhow::anyhow;
+use pulse::{context::introspect::SinkInputInfo, volume};
+
+const FULL_VOLUME: u32 = 1 << 16;
+
+pub fn volume_to_percentage(volume: volume::ChannelVolumes) -> u8 {
+    let average = volume.avg().0;
+
+    total_volume_to_percentage(average)
+}
+
+pub fn total_volume_to_percentage(volume: u32) -> u8 {
+    ((volume as f32 / FULL_VOLUME as f32) * 100.0).round() as u8
+}
+
+pub fn percentage_to_total_volume(percentage: u8) -> u32 {
+    ((FULL_VOLUME as f32 / 100.0) * percentage as f32).round() as u32
+}
+
+pub fn get_sink_input_name(sink_input: &SinkInputInfo) -> anyhow::Result<String> {
+    let Some(name_bytes) = sink_input.proplist.get("application.name") else {
+        return Err(anyhow!("Invalid sink input name"));
+    };
+
+    Ok(String::from_utf8(
+        name_bytes[..name_bytes.len() - 1].to_vec(),
+    )?)
+}