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use cpal::traits::{DeviceTrait, HostTrait};
/// Pick the best input device from the available list.
///
/// - `"auto"` → query OS default input device via cpal, match against list
/// - `"<name>"` → match by device ID or name; exits if not found
/// - `None` → exits with error
pub fn pick_device<'a>(
name: &Option<String>,
devices: &'a [vtx_engine::AudioDevice],
) -> Option<&'a vtx_engine::AudioDevice> {
let name = match name {
Some(n) if n == "auto" || n.is_empty() => return pick_auto(devices),
Some(n) => n.as_str(),
None => {
eprintln!(
"[dmvop] No device specified. Use --device=<name> or --list-devices to see available devices."
);
std::process::exit(1);
}
};
// Try exact match by id or name
if let Some(d) = devices.iter().find(|d| d.id == name || d.name == name) {
return Some(d);
}
eprintln!(
"[dmvop] Device '{}' not found. Use --list-devices to see available devices.",
name
);
std::process::exit(1);
}
/// Use cpal to find the system's default input device, then match it
/// against the vtx-engine device list by WASAPI ID.
fn pick_auto<'a>(devices: &'a [vtx_engine::AudioDevice]) -> Option<&'a vtx_engine::AudioDevice> {
let host = cpal::default_host();
let device = match host.default_input_device() {
Some(d) => d,
None => {
eprintln!("[dmvop] No default input device found.");
return devices.first();
}
};
// Get the WASAPI device ID from cpal
let cpal_device_id = match device.id() {
Ok(id) => id,
Err(_) => return devices.first(),
};
let cpal_raw_id = cpal_device_id.id().to_string();
// Match against vtx-engine devices by ID (substring — cpal might omit braces)
for dev in devices {
let dev_id_clean = dev.id.trim_matches('{').trim_matches('}');
let cpal_id_clean = cpal_raw_id.trim_matches('{').trim_matches('}');
if dev_id_clean.contains(cpal_id_clean) || cpal_id_clean.contains(dev_id_clean) {
return Some(dev);
}
}
// Fallback: match by name (cpal DeviceId Display includes host:raw_id)
let cpal_display = cpal_device_id.to_string().to_lowercase();
for dev in devices {
if cpal_display.contains(&dev.name.to_lowercase())
|| dev.name.to_lowercase().contains(&cpal_display)
{
return Some(dev);
}
}
eprintln!(
"[dmvop] Default device ({}) not matched, using first available.",
cpal_raw_id
);
devices.first()
}
|
