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Introduce play-cycle-complete? #5

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11 changes: 10 additions & 1 deletion src/clj_audio/core.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -147,21 +147,30 @@
(ref false)
)

(def play-cycle-complete?
"True if `play*` is not blocking due to I/O operations.
You can observe this variable for ensuring `play*` is not being used concurrently."
(ref true))

(defn play*
"Write the given audio stream bytes to the given source data line
using a buffer of the given size. Returns the number of bytes played."
[#^SourceDataLine source audio-stream buffer-size]
(let [buffer (byte-array buffer-size)]
(dosync (ref-set *playing* true))
(loop [cnt 0 total 0]
(dosync (ref-set play-cycle-complete? false))
(if (and (> cnt -1) @*playing*)
(do
(when (> cnt 0)
(.write source buffer 0 cnt))
(recur (.read audio-stream buffer 0 (alength buffer))
(recur (let [v (.read audio-stream buffer 0 (alength buffer))]
(dosync (ref-set play-cycle-complete? true))
v)
(+ total cnt)))
(dosync
(ref-set *playing* false)
(ref-set play-cycle-complete? true)
total)))))

(defn stop
Expand Down