feat(stereo): 新增不同型号的小爱音箱组立体声应用

2025-12-31 22:53:33 +08:00
parent 7bdbb30bd2
commit ab872180fc
23 changed files with 1905 additions and 0 deletions
@@ -0,0 +1,85 @@
+#![cfg(target_os = "linux")]
+
+use anyhow::{Context, Result};
+use std::fs;
+use std::process::Command;
+
+const FIFO_PATH: &str = "/tmp/stereo_out.fifo";
+const REAL_ASOUND_CONF: &str = "/etc/asound.conf";
+const TEMP_ASOUND_CONF: &str = "/tmp/asound.stereo.conf";
+
+/// ALSA 音频重定向器，用于拦截系统音频输出到 FIFO 管道
+pub struct AlsaRedirector;
+
+impl AlsaRedirector {
+    pub fn new() -> Result<Self> {
+        Self::cleanup(); // 确保环境干净
+
+        let original_conf = fs::read_to_string(REAL_ASOUND_CONF).unwrap_or_default();
+
+        if !original_conf.contains("pcm.original_default") {
+            // 重命名原有的 default 逻辑，插入拦截器
+            let mut new_conf = original_conf.replace("pcm.!default", "pcm.original_default");
+            new_conf.push_str(&format!(
+                "\npcm.!default {{ type plug slave {{ pcm \"stereo_interceptor\" format S16_LE rate 48000 channels 2 }} }}\n\
+                pcm.stereo_interceptor {{ type file slave.pcm \"null\" file \"{}\" format \"raw\" }}\n",
+                FIFO_PATH
+            ));
+
+            fs::write(TEMP_ASOUND_CONF, new_conf)?;
+
+            // 挂载覆盖 /etc/asound.conf
+            let status = Command::new("mount")
+                .arg("--bind")
+                .arg(TEMP_ASOUND_CONF)
+                .arg(REAL_ASOUND_CONF)
+                .status()
+                .context("执行 mount 命令失败")?;
+
+            if !status.success() {
+                return Err(anyhow::anyhow!("挂载 asound.conf 失败"));
+            }
+
+            Self::restart_applications();
+        }
+
+        // 创建 FIFO 管道
+        let _ = Command::new("mkfifo").arg(FIFO_PATH).status();
+        let _ = Command::new("chmod").arg("666").arg(FIFO_PATH).status();
+
+        Ok(Self)
+    }
+
+    pub fn cleanup() {
+        let _ = Command::new("sh")
+            .arg("-c")
+            .arg(format!("umount -l {} >/dev/null 2>&1", REAL_ASOUND_CONF))
+            .status();
+        let _ = fs::remove_file(TEMP_ASOUND_CONF);
+        let _ = fs::remove_file(FIFO_PATH);
+        Self::restart_applications();
+    }
+
+    pub fn fifo_path() -> &'static str {
+        FIFO_PATH
+    }
+
+    pub fn restart_applications() {
+        // 重启媒体播放器
+        let _ = Command::new("sh")
+            .arg("-c")
+            .arg("/etc/init.d/mediaplayer restart >/dev/null 2>&1")
+            .status();
+        // 重启蓝牙
+        let _ = Command::new("sh")
+            .arg("-c")
+            .arg("/etc/init.d/bluetooth restart >/dev/null 2>&1")
+            .status();
+    }
+}
+
+impl Drop for AlsaRedirector {
+    fn drop(&mut self) {
+        Self::cleanup();
+    }
+}