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Improve error reporting in beep example

This commit is contained in:
tomaka 2016-01-15 18:05:29 +01:00
parent 71a40fdc4f
commit ec0bd9ebbc
1 changed files with 3 additions and 3 deletions
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6
examples/beep.rs
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@ -1,9 +1,9 @@
extern crate cpal;
fn main() {
let endpoint = cpal::get_default_endpoint().unwrap();
let format = endpoint.get_supported_formats_list().unwrap().next().unwrap();
let mut channel = cpal::Voice::new(&endpoint, &format).unwrap();
let endpoint = cpal::get_default_endpoint().expect("Failed to get default endpoint");
let format = endpoint.get_supported_formats_list().unwrap().next().expect("Failed to get endpoint format");
let mut channel = cpal::Voice::new(&endpoint, &format).expect("Failed to create a channel");
// Produce a sinusoid of maximum amplitude.
let mut data_source = (0u64..).map(|t| t as f32 * 440.0 * 2.0 * 3.141592 / format.samples_rate.0 as f32) // 440 Hz