(load-sample ...) results in NullPointerException

[ericclack]

Following the lein instructions here:
https://github.com/overtone/overtone#installation

Then opening a REPL and running:

(use 'overtone.live)
(load-sample "resources/samples/clap.wav")

Results in:

1. Unhandled java.lang.NullPointerException
   (No message)
              Numbers.java: 1018  clojure.lang.Numbers/ops
              Numbers.java:  226  clojure.lang.Numbers/lt
                buffer.clj:   67  overtone.sc.buffer/assert-less-than-max-buffers
                buffer.clj:   62  overtone.sc.buffer/assert-less-than-max-buffers
                buffer.clj:  168  overtone.sc.buffer/buffer-alloc-read
                buffer.clj:  150  overtone.sc.buffer/buffer-alloc-read
                sample.clj:  128  overtone.sc.sample/load-sample*
                sample.clj:  119  overtone.sc.sample/load-sample*
                sample.clj:  163  overtone.sc.sample/load-sample
                sample.clj:  138  overtone.sc.sample/load-sample
               RestFn.java:  410  clojure.lang.RestFn/invoke
                  Var.java:  381  clojure.lang.Var/invoke
                      REPL:   97  user/eval17475
                      REPL:   97  user/eval17475
             Compiler.java: 7062  clojure.lang.Compiler/eval
             Compiler.java: 7025  clojure.lang.Compiler/eval
                  core.clj: 3206  clojure.core/eval
                  core.clj: 3202  clojure.core/eval
                  main.clj:  243  clojure.main/repl/read-eval-print/fn
                  main.clj:  243  clojure.main/repl/read-eval-print
                  main.clj:  261  clojure.main/repl/fn
                  main.clj:  261  clojure.main/repl
                  main.clj:  177  clojure.main/repl

This worked OK in Overtone 10.3.0.

[ericclack]

Also, I'm running Mac OS 10.14.6, with Emacs and Cider. I had been running Overtone 0.10.3 prior to changing to the latest version.

This works fine:

user> (use 'overtone.inst.synth)
user> (overpad)

I'm happy to test / explore if you give me some pointers.

[ericclack]

This is a duplicate of this closed issue?
#427

[hlolli]

Yes this should be fixed on master, I'll try to brew a new release in next days. So if you put this in your deps.edn

 {overtone/overtone {:git/url "https://github.com/overtone/overtone.git" :sha "e55205fe9d3b499d0fb12931791fe6299d9624a6"}}

you should be fine, otherwise I plan to increase the default max-buffer size before next release.

[garaud]

I had some similar issues. As @hlolli said, I increased the value of max-buffers.

I wrote this in my ~/.overtone/config.clj

:sc-args {:max-buffers 4096}

and this fixed the issue.

[heyarne]

Yes this should be fixed on master, I'll try to brew a new release in next days. So if you put this in your deps.edn

 {overtone/overtone {:git/url "https://github.com/overtone/overtone.git" :sha "e55205fe9d3b499d0fb12931791fe6299d9624a6"}}

I tried this via clj -Arebel -Sdeps '{:deps {overtone/overtone {:git/url "https://github.com/overtone/overtone.git" :sha "6ac57556014875357ef0c3355a11602069420a50"}}}' (latest master, -Arebel is an alias for rebel-readline). (use 'overtone.live) throws an error for me:

Checking out: https://github.com/overtone/overtone.git at 6ac57556014875357ef0c3355a11602069420a50
[Rebel readline] Type :repl/help for online help info
user=> (use 'overtone.live)
--> Loading Overtone...
Syntax error (IllegalArgumentException) compiling at (overtone/jna_path.clj:37:1).
Cannot open <nil> as a Reader.
user=>

The same happens with the commit you mentioned, so the sample problem remains for me. I can (use 'overtone.live) but can't play samples b/c of the mentioned NullPointerException. Any idea what's wrong? I'm using the linux kernel 5.6.5 and clojure 1.10.1.

[hlolli]

I think I know what's causing this. You could try to physically clone the repository. It looks like I made a silly decision there expecting the deps.edn to be always available on classpath or in resource-path (inside .jar file from classpath). Alternatively, since clj is an executable which badigeon calls, it could be because of the alpha state of tools-deps, some non-backwards compatable change happened and your version is too new. Either case, this needs fixing.

[hlolli]

I'm really caught up until sunday next week because of deadlines. You think you could debug that which is happening in this snippet

(defn- slurp-deps-edn []
  (if (.exists (io/file "deps.edn"))
    (deps-reader/slurp-deps "deps.edn")
    (-> "deps.edn"
        io/resource
        slurp
        edn/read-string
        canonicalize-all-syms)))

;; extract the native dependencies with badigeon
(bundle/extract-native-dependencies
 (System/getProperty "user.dir")
 {:deps-map (slurp-deps-edn)
  :allow-unstable-deps? true
  :native-path "native"
  :native-prefixes {'overtone/ableton-link ""
                    'overtone/scsynth "native"
                    'overtone/scsynth-extras "native"}})

Its only goal is to extract the .so files so that the ldload can call them from inside jna. In very simple term, just unzip operation.

I can approve a fixing pr quickly.

[heyarne]

I can confirm that it works with the clojure / clj command line tools when running it from the root of the coned repository – using the overtone.live namespace as well as setting up and playing samples. Cool! I'll try to take a look at the code you posted!

[bkushigian]

Any updates on this? I'm getting a similar error with Emacs/cider running (sample (freesound-path nnnn)).