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Commit 191f23a4 authored by Phil Burk's avatar Phil Burk Committed by Glenn Kasten
Browse files

MIDI docs: fix buffer allocation 



Also describe NoteOn more clearly.

Bug: 23303608
Change-Id: I35f88022c854c2eb16ec606e58f28e06c52d18b7
Signed-off-by: default avatarPhil Burk <philburk@google.com>
(cherry picked from commit bda0caf0)
parent b6e91dfa

media/java/android/media/midi/package.html

+5 −4
Original line number Diff line number Diff line
@@ -202,11 +202,12 @@ MidiInputPort inputPort = device.openInputPort(index); 
<p>MIDI messages are sent as byte arrays. Here we encode a NoteOn message.</p>



<pre class=prettyprint>

byte[] buffer = new buffer[64];

byte[] buffer = new byte[32];

int numBytes = 0;

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

buffer[numBytes++] = pitch;

buffer[numBytes++] = velocity;

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

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

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

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

int offset = 0;

// post is non-blocking

inputPort.send(buffer, offset, numBytes);