zymon/PortAudio.jl
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adds warn_xrun option

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This commit is contained in:
Spencer Russell 2019-04-02 14:06:00 -04:00
parent 0425fbfe3b
commit 01ddd6b835
1 changed files with 13 additions and 6 deletions
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19
src/PortAudio.jl
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@ -77,6 +77,7 @@ mutable struct PortAudioStream{T}
samplerate::Float64
blocksize::Int
stream::PaStream
warn_xruns::Bool
sink # untyped because of circular type definition
source # untyped because of circular type definition
errbuf::RingBuffer{pa_shim_errmsg_t} # used to send errors from the portaudio callback
@ -86,7 +87,8 @@ mutable struct PortAudioStream{T}
# this inner constructor is generally called via the top-level outer
# constructor below
function PortAudioStream{T}(indev::PortAudioDevice, outdev::PortAudioDevice,
inchans, outchans, sr, blocksize, synced) where {T}
inchans, outchans, sr, blocksize, synced,
warn_xruns) where {T}
inchans = inchans == -1 ? indev.maxinchans : inchans
outchans = outchans == -1 ? outdev.maxoutchans : outchans
inparams = (inchans == 0) ?
@ -95,7 +97,7 @@ mutable struct PortAudioStream{T}
outparams = (outchans == 0) ?
Ptr{Pa_StreamParameters}(0) :
Ref(Pa_StreamParameters(outdev.idx, outchans, type_to_fmt[T], 0.0, C_NULL))
this = new(sr, blocksize, C_NULL)
this = new(sr, blocksize, C_NULL, warn_xruns)
@compat finalizer(close, this)
this.sink = PortAudioSink{T}(outdev.name, this, outchans, blocksize*2)
this.source = PortAudioSource{T}(indev.name, this, inchans, blocksize*2)
@ -150,9 +152,14 @@ Options:
frames, and the round-trip latency is guaranteed constant. If
`false`, you are free to read and write separately, but
overflow or underflow can affect the round-trip latency.
* `warn_xruns`: Display a warning if there is a stream overrun or underrun,
which often happens when Julia is compiling, or with a
particularly large GC run. This can be quite verbose so is
false by default.
"""
function PortAudioStream(indev::PortAudioDevice, outdev::PortAudioDevice,
inchans=2, outchans=2; eltype=Float32, samplerate=-1, blocksize=DEFAULT_BLOCKSIZE, synced=false)
inchans=2, outchans=2; eltype=Float32, samplerate=-1, blocksize=DEFAULT_BLOCKSIZE,
synced=false, warn_xruns=false)
if samplerate == -1
sampleratein = indev.defaultsamplerate
samplerateout = outdev.defaultsamplerate
@ -167,7 +174,7 @@ function PortAudioStream(indev::PortAudioDevice, outdev::PortAudioDevice,
samplerate = samplerateout
end
end
PortAudioStream{eltype}(indev, outdev, inchans, outchans, samplerate, blocksize, synced)
PortAudioStream{eltype}(indev, outdev, inchans, outchans, samplerate, blocksize, synced, warn_xruns)
end
# handle device names given as streams
@ -298,9 +305,9 @@ function handle_errors(stream::PortAudioStream)
if err[1] == PA_SHIM_ERRMSG_ERR_OVERFLOW
@warn "Error buffer overflowed on portaudio stream"
elseif err[1] == PA_SHIM_ERRMSG_OVERFLOW
@warn "Input overflowed from $(name(stream.source))"
stream.warn_xruns && @warn "Input overflowed from $(name(stream.source))"
elseif err[1] == PA_SHIM_ERRMSG_UNDERFLOW
@warn "Output underflowed to $(name(stream.sink))"
stream.warn_xruns && @warn "Output underflowed to $(name(stream.sink))"
else
error("""
Got unrecognized error code $(err[1]) from audio thread for