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added in sniperrifle2004 code from PR 431

This commit is contained in:
JoshuaBatty 2020-07-14 14:10:00 +02:00
parent f285389002
commit e854c4e54c
1 changed files with 7 additions and 2 deletions
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9
src/host/alsa/mod.rs
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@ -879,7 +879,7 @@ fn set_hw_params_from_format<'a>(
config: &StreamConfig, config: &StreamConfig,
sample_format: SampleFormat, sample_format: SampleFormat,
) -> Result<alsa::pcm::HwParams<'a>, BackendSpecificError> { ) -> Result<alsa::pcm::HwParams<'a>, BackendSpecificError> {
let mut hw_params = alsa::pcm::HwParams::any(pcm_handle)?; let hw_params = alsa::pcm::HwParams::any(pcm_handle)?;
hw_params.set_access(alsa::pcm::Access::RWInterleaved)?; hw_params.set_access(alsa::pcm::Access::RWInterleaved)?;
let sample_format = if cfg!(target_endian = "big") { let sample_format = if cfg!(target_endian = "big") {
@ -902,7 +902,12 @@ fn set_hw_params_from_format<'a>(
match config.buffer_size { match config.buffer_size {
BufferSize::Fixed(v) => hw_params.set_buffer_size(v as i64)?, BufferSize::Fixed(v) => hw_params.set_buffer_size(v as i64)?,
BufferSize::Default => (), BufferSize::Default => {
// These values together represent a moderate latency and wakeup interval.
// Without them we are at the mercy of the device
hw_params.set_period_time_near(25_000, alsa::ValueOr::Nearest)?;
hw_params.set_buffer_time_near(100_000, alsa::ValueOr::Nearest)?;
},
} }
pcm_handle.hw_params(&hw_params)?; pcm_handle.hw_params(&hw_params)?;