wavplay example not working on Linux #77

ntjess · 2019-07-21T19:20:48Z

Package documentation indicates I should be able to run the following code without issue, provided libpulse-simple is available on my machine:

using WAV;
w, Fs = wavread("myWavFile.wav");
wavplay(w, Fs);

However, I receive the following error after this attempt in the REPL:

w, Fs = wavread("myWavFile.wav")
([-0.00191915 0.00196099; -0.00176525 -0.00658834; … ; -4.05312e-6 9.17912e-6; -1.19209e-7 5.96047e-7], 48000.0f0, 0x0018, WAVChunk[WAVChunk(Symbol("fmt "), UInt8[0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x80, 0xbb, 0x00, 0x00, 0x00, 0x65, 0x04, 0x00, 0x06, 0x00, 0x18, 0x00])])

julia> wavplay(w, Fs)
ERROR: MethodError: no method matching wavplay(::Array{Float64,2}, ::Float32)
Closest candidates are:
  wavplay(::Any) at MY_DIR/.julia/packages/WAV/aZBXG/src/WAV.jl:38
Stacktrace:
 [1] top-level scope at none:0

Output of versionInfo():

Julia Version 1.1.1
Commit 55e36cc308 (2019-05-16 04:10 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: AMD A6-9220e RADEON R4, 5 COMPUTE CORES 2C+3G
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, btver1)

The text was updated successfully, but these errors were encountered:

minecraft2048 · 2019-09-05T06:32:33Z

Same:

julia> wavplay(sig2,48000)
ERROR: MethodError: no method matching wavplay(::Array{Real,1}, ::Int64)
Closest candidates are:
  wavplay(::Any) at /home/minato/.julia/packages/WAV/aZBXG/src/WAV.jl:38
Stacktrace:
 [1] top-level scope at REPL[22]:1

julia> versioninfo()
Julia Version 1.2.0
Commit c6da87ff4b (2019-08-20 00:03 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, skylake)

mgkuhn · 2019-11-26T20:34:58Z

I suspect the entire __init__() function in src/WAV.jl no longer works. It expects

module WAV
    WAV
end

to throw an UndefVarError exception, but under Julia 1.3 it just returns Main.WAV instead. As a result, "wavplay-pulse.jl" or "wavplay-audioqueue.jl" are never included now and therefore their wavplay() methods remain undefined.

The entire way in which __init__() includes source code at runtime, as the result of testing for the presence of a shared library, seems much more appropriate for an interpreted language than for compiled Julia. This programming style currently causes the Julia parser to be invoked each time WAV is loaded!

I think the entire __init__() function should be removed and this OS dependency should instead be dealt with at compile time, as described under Handling operating system variation in the Julia manual.

There should also be test cases for wavplay(). (They are currently commented out.)

Ronneesley · 2019-12-05T01:38:42Z

Same:

julia> wavplay(y, fs)
ERROR: MethodError: no method matching wavplay(::Array{Float64,2}, ::Float32)
Closest candidates are:
  wavplay(::Any) at /home/ronneesley/.julia/packages/WAV/T2P9V/src/WAV.jl:38
Stacktrace:
 [1] top-level scope at REPL[19]:1

kalvotom · 2020-03-06T22:08:33Z

I have stumbled into this too.

julia> versioninfo()
Julia Version 1.3.1
Commit 2d5741174c (2019-12-30 21:36 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, broadwell)

spirosbax · 2020-03-31T09:40:33Z

Not working on my system either. Same error message as previously mentioned.

julia> versioninfo()  
Julia Version 1.4.0  
Commit b8e9a9ecc6 (2020-03-21 16:36 UTC)  
Platform Info:  
  OS: Linux (x86_64-pc-linux-gnu)  
  CPU: AMD A10-7850K Radeon R7, 12 Compute Cores 4C+8G  
  WORD_SIZE: 64  
  LIBM: libopenlibm  
  LLVM: libLLVM-8.0.1 (ORCJIT, bdver3)

AshtonSBradley · 2020-04-06T21:44:32Z

Not just a linux issue. Same problem on:

julia> versioninfo()
Julia Version 1.4.0
Commit b8e9a9ecc6 (2020-03-21 16:36 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin18.6.0)
  CPU: Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-8.0.1 (ORCJIT, skylake)
Environment:
  JULIA_NUM_THREADS = 4

spirosbax · 2020-04-30T10:32:05Z

For the last couple of hours I have been trying to fix this issue. A dirty fix is to directly include the wavplay-pulse.jl file. Then wavplay works (at least for me). In my testing the __init__ function also works as expected, meaning it detects the libpulse library and it includes wavplay-pulse.jl. But for some weird reason the wavplay definition inside the wavplay-pulse.jl does not get reexported. Maybe someone with more experience can give me a push ?

spirosbax · 2020-04-30T10:46:39Z

I suspect the entire __init__() function in src/WAV.jl no longer works. It expects
module WAV
    WAV
end
to throw an UndefVarError exception, but under Julia 1.3 it just returns Main.WAV instead. As a result, "wavplay-pulse.jl" or "wavplay-audioqueue.jl" are never included now and therefore their wavplay() methods remain undefined.

The entire way in which __init__() includes source code at runtime, as the result of testing for the presence of a shared library, seems much more appropriate for an interpreted language than for compiled Julia. This programming style currently causes the Julia parser to be invoked each time WAV is loaded!

I think the entire __init__() function should be removed and this OS dependency should instead be dealt with at compile time, as described under Handling operating system variation in the Julia manual.

There should also be test cases for wavplay(). (They are currently commented out.)

In my testing UndefVarError is returned and __init__ works as expected. The exception would not be thrown only if WAV had been previously defined, which it shouldn't .

But I think you are right about the include statements inside it. OS handling should probably be written in a different way.

dancasimiro · 2020-05-01T09:53:07Z

I have not checked recently, but the tests used to blow up the online CI tools. The tests failed hard due to lacking audio hardware.

dancasimiro · 2020-05-01T09:57:37Z

It is entirely possible that this pattern is incompatible with modern Julia. The code was written a long time ago. I am open to different approaches. There might be other packages available today that render audio more portably.

AshtonSBradley · 2020-05-01T20:03:21Z

this does a great job at generating a player in Juno, Jupyter, but it reverts to WAV if WAV is installed, and then stops producing a player

https://github.com/JuliaAudio/LibSndFile.jl

also, WAV.jl is needed to easily load raw data from a .wav. So for example, to load, manipulate and then play, I first install WAV, then, load and manipulate data and save. Then I unstall WAV and play the new .wav file...

dancasimiro · 2020-05-25T18:07:28Z

It doesn't look like LibSndFile.jl can reproduce audio. Additionally, PortAudio is not working in Julia 1.4.2. Should I revert the runtime checking and assume that pulse audio is available @ntjess?

@AshtonSBradley: What are you using to play the WAV file (in your last comment above)?

I did not know about this long thread: https://discourse.julialang.org/t/how-to-play-an-audio-in-julia/31881/30

spirosbax · 2020-05-28T10:51:04Z

Not just a linux issue. Same problem on:

julia> versioninfo()
Julia Version 1.4.0
Commit b8e9a9ecc6 (2020-03-21 16:36 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin18.6.0)
  CPU: Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-8.0.1 (ORCJIT, skylake)
Environment:
  JULIA_NUM_THREADS = 4

On macOS you should include the wavplay-audioqueue.jl file with include("./wavplay-audioqueue.jl")

AshtonSBradley · 2020-05-29T06:20:57Z

By itself, LibSndFile.jl does play audio from WAV files. In Juno and Jupyter it generates a player on load, like this:

but the issue is that if you have WAV installed, then LibSndFile tries to use that for WAV files, and then the player no longer appears. So the WAV interaction of LibSndFile currently breaks its player...

contradict · 2020-06-12T05:11:41Z

I see one possible resolution here is to remove wavplay entirely ( #77 ), but I just created #85 , which fixes wavplay for linux.

The problem described above by @AshtonSBradley is an important one, and is due to both LibSndFile.jl and WAV.jl registering themselves with FileIO.jl. WAV.jl takes precedence (I'm still not sure why) and ends up being called for load. The load method registered by LibSndFile returns a SampledSignals.SampleBufobject, that object knows how to create the player in Juno and Jupyter. The object returned by WAV.jl does not implement this method.

However, the SampleBuf object does not implement audio playback in stand-alone applications or at the REPL, so removing it would disable REPL sound playback.

To play audio in a browser-based UI when WAV.jl is installed, you can wrap the output of wavread or FileIO.load in a SampleBuf like this:

using WAV
using SampledSignals
samples, fs = wavread("/usr/share/sounds/purple/alert.wav");
buf = SampleBuf{Float64, 2}(samples, fs)

dancasimiro · 2020-07-11T12:26:55Z

Fixed by #85

dancasimiro mentioned this issue May 25, 2020

Fix #77: Remove wavplay function #84

Closed

dancasimiro closed this as completed Jul 11, 2020

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wavplay example not working on Linux #77

wavplay example not working on Linux #77

ntjess commented Jul 21, 2019 •

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contradict commented Jun 12, 2020

dancasimiro commented Jul 11, 2020

wavplay example not working on Linux #77

wavplay example not working on Linux #77

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