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59 lines
2.3 KiB
59 lines
2.3 KiB
8 years ago
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<script type="text/x-red" data-help-name="AudioRecordQueue">
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<h3>Summary</h3>
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<div class=tooltipinfo>
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<p>Record audio data by sending to the Arduino sketch. This object allows
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sketch code to receive audio packets.</p>
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</div>
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<h3>Audio Connections</h3>
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<table class=doc align=center cellpadding=3>
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<tr class=top><th>Port</th><th>Purpose</th></tr>
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<tr class=odd><td align=center>In 0</td><td>Sound To Access</td></tr>
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</table>
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<h3>Functions</h3>
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<p class=func><span class=keyword>begin</span>();</p>
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<p class=desc>Begin capturing incoming audio to the queue. After calling
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begin, readBuffer() and freeBuffer(), or clear() must be used frequently
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to prevent the queue from filling up.
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</p>
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<p class=func><span class=keyword>available</span>();</p>
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<p class=desc>Returns the number of audio packets available to read.
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</p>
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<p class=func><span class=keyword>readBuffer</span>();</p>
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<p class=desc>Read a single audio packet. A pointer to a 128 sample
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array of 16 bit integers is returned. NULL is returned if no packets
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are available.
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</p>
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<p class=func><span class=keyword>freeBuffer</span>();</p>
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<p class=desc>Release the memory from the previously read packet returned
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from readBuffer(). Only a single packet at a time may be read, and
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each packet must be freed with this function, to return the memory to
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the audio library.
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</p>
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<p class=func><span class=keyword>clear</span>();</p>
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<p class=desc>Discard all audio held in the queue.
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</p>
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<p class=func><span class=keyword>end</span>();</p>
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<p class=desc>Stop capturing incoming audio into the queue. Data already
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captured remains in the queue and may be read with readBuffer().
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</p>
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<h3>Examples</h3>
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<p class=exam>File > Examples > Audio > Recorder
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</p>
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<h3>Notes</h3>
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<p>
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Up to 52 packets may be queued by this object, which allows approximately
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150 ms of audio to be held in the queue, to allow time for the Arduino
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sketch to write data to media or do other high-latency tasks.
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The actual packets are taken
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from the pool created by AudioMemory().
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</p>
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</script>
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<script type="text/x-red" data-template-name="AudioRecordQueue">
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<div class="form-row">
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<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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</script>
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