From 14a5fcf410da7d9db4af2cb0635da40ed2bdd2e2 Mon Sep 17 00:00:00 2001
From: jules <jules@rawmaterialsoftware.com>
Date: Thu, 6 Mar 2014 16:02:09 +0000
Subject: [PATCH] Attempt at better recovery from malformed sysex messages in a
 midi stream.

---
 .../native/juce_MidiDataConcatenator.h        | 22 ++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/modules/juce_audio_devices/native/juce_MidiDataConcatenator.h b/modules/juce_audio_devices/native/juce_MidiDataConcatenator.h
index 435e30c4b2..4dc70b9bb7 100644
--- a/modules/juce_audio_devices/native/juce_MidiDataConcatenator.h
+++ b/modules/juce_audio_devices/native/juce_MidiDataConcatenator.h
@@ -123,6 +123,14 @@ private:
         {
             if (pendingBytes > 0 && *d >= 0x80)
             {
+                if (*d == 0xf7)
+                {
+                    *dest++ = *d++;
+                    ++pendingBytes;
+                    --numBytes;
+                    break;
+                }
+
                 if (*d >= 0xfa || *d == 0xf8)
                 {
                     callback.handleIncomingMidiMessage (input, MidiMessage (*d, time));
@@ -131,11 +139,15 @@ private:
                 }
                 else
                 {
-                    if (*d == 0xf7)
+                    pendingBytes = 0;
+                    int used = 0;
+                    const MidiMessage m (d, numBytes, used, 0, time);
+
+                    if (used > 0)
                     {
-                        *dest++ = *d++;
-                        pendingBytes++;
-                        --numBytes;
+                        callback.handleIncomingMidiMessage (input, m);
+                        numBytes -= used;
+                        d += used;
                     }
 
                     break;
@@ -144,7 +156,7 @@ private:
             else
             {
                 *dest++ = *d++;
-                pendingBytes++;
+                ++pendingBytes;
                 --numBytes;
             }
         }