2025-12-29 16:58:01 +08:00
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#[derive(Debug, Clone)]
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2025-12-28 20:17:56 +08:00
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pub struct AudioConfig {
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pub capture_device: String,
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pub playback_device: String,
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pub sample_rate: u32,
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pub channels: u16,
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pub frame_size: usize,
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pub bitrate: i32,
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}
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impl Default for AudioConfig {
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fn default() -> Self {
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Self {
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// 根据 apps/runtime/squashfs-root/etc/asound.conf 分析：
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// 录音设备对应 pcm.Capture -> hw:0,3 (S32_LE, 48000Hz)
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// 播放设备对应 pcm.dmixer -> hw:0,2 (S16_LE, 48000Hz)
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// 使用 "default" 或 "plug" 设备可以由 ALSA 自动处理采样率和格式转换
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capture_device: "plug:Capture".to_string(),
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playback_device: "default".to_string(),
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sample_rate: 16000, // Opus 常用 16k，ALSA plug 会自动从 48k 转换
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channels: 1,
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frame_size: 320, // 20ms at 16kHz
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bitrate: 16000,
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}
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}
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}
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