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Merge pull request #104 from alboyer/fix-latency

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Fix latency
This commit is contained in:
Paul Lietar 2016-07-22 16:14:58 -07:00 committed by GitHub
commit 5388565652
2 changed files with 10 additions and 5 deletions
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4
Cargo.lock generated
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@ -564,7 +564,7 @@ dependencies = [
[[package]]
name = "portaudio"
version = "0.2.0"
source = "git+https://github.com/mvdnes/portaudio-rs#0b228f54a16814c52ba1ef449ac439af59f8cab0"
source = "git+https://github.com/mvdnes/portaudio-rs#2e1630843551a229bfe6cae6291fd157349bad60"
dependencies = [
"bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
@ -574,7 +574,7 @@ dependencies = [
[[package]]
name = "portaudio_sys"
version = "0.1.1"
source = "git+https://github.com/mvdnes/portaudio-rs#0b228f54a16814c52ba1ef449ac439af59f8cab0"
source = "git+https://github.com/mvdnes/portaudio-rs#2e1630843551a229bfe6cae6291fd157349bad60"
dependencies = [
"libc 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
"pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",

11
src/audio_backend/portaudio.rs
View file

@ -1,6 +1,7 @@
use super::{Open, Sink};
use std::io;
use std::process::exit;
use std::time::Duration;
use portaudio;
use portaudio::device::{DeviceIndex, DeviceInfo, get_default_output_index};
@ -53,12 +54,16 @@ impl <'a> Open for PortAudioSink<'a> {
None => get_default_output_index(),
}.expect("Could not find device");
let info = portaudio::device::get_info(device_idx);
let latency = match info {
Some(info) => info.default_high_output_latency,
None => Duration::new(0, 0),
};
let params = StreamParameters {
device: device_idx,
channel_count: 2,
// Super hacky workaround the fact that Duration is private
// in portaudio
suggested_latency: unsafe { ::std::mem::transmute(0i64) },
suggested_latency: latency,
data: 0i16,
};