Merge "MIDI docs: fix buffer allocation" into mnc-dev

<p>MIDI messages are sent as byte arrays. Here we encode a NoteOn message.</p>

<p>MIDI messages are sent as byte arrays. Here we encode a NoteOn message.</p>

<pre class=prettyprint>

<pre class=prettyprint>

byte[] buffer = new buffer[64];

byte[] buffer = new byte[32];

int numBytes = 0;

int numBytes = 0;

buffer[numBytes++] = 0x90 + channel; // note on

int channel = 3; // MIDI channels 1-16 are encoded as 0-15.

buffer[numBytes++] = pitch;

buffer[numBytes++] = (byte)(0x90 + (channel - 1)); // note on

buffer[numBytes++] = velocity;

buffer[numBytes++] = (byte)60; // pitch is middle C

buffer[numBytes++] = (byte)127; // max velocity

int offset = 0;

int offset = 0;

// post is non-blocking

// post is non-blocking

inputPort.send(buffer, offset, numBytes);

inputPort.send(buffer, offset, numBytes);