- Made some methods const

- Prefer const_iterator over iterator in SciMusic::findUsedChannels

svn-id: r49417

3 files changed, 4 insertions, 4 deletions

diff --git a/engines/sci/sound/midiparser_sci.h b/engines/sci/sound/midiparser_sci.h
index d9ae583aff..e33e613dd6 100644
--- a/engines/sci/sound/midiparser_sci.h
+++ b/engines/sci/sound/midiparser_sci.h
@@ -78,7 +78,7 @@ public:
 	}
 
 protected:
-	bool isChannelUsed(byte channel) { return _channelsUsed & (1 << channel); }
+	bool isChannelUsed(byte channel) const { return _channelsUsed & (1 << channel); }
 	void setChannelUsed(byte channel) { _channelsUsed |= (1 << channel); }
 
 	void parseNextEvent(EventInfo &info);
diff --git a/engines/sci/sound/music.cpp b/engines/sci/sound/music.cpp
index 1d186647f8..e1300373e7 100644
--- a/engines/sci/sound/music.cpp
+++ b/engines/sci/sound/music.cpp
@@ -179,8 +179,8 @@ void SciMusic::findUsedChannels() {
 	for (int k = 0; k < 16; k++)
 		_usedChannels[k] = false;
 
-	const MusicList::iterator end = _playList.end();
-	for (MusicList::iterator i = _playList.begin(); i != end; ++i) {
+	const MusicList::const_iterator end = _playList.end();
+	for (MusicList::const_iterator i = _playList.begin(); i != end; ++i) {
 		for (int channel = 0; channel < 16; channel++) {
 			if ((*i)->soundRes && (*i)->soundRes->isChannelUsed(channel))
 				_usedChannels[channel] = true;
diff --git a/engines/sci/sound/music.h b/engines/sci/sound/music.h
index f5eb7ce8d9..83cd59e89b 100644
--- a/engines/sci/sound/music.h
+++ b/engines/sci/sound/music.h
@@ -211,7 +211,7 @@ protected:
 private:
 	static void miditimerCallback(void *p);
 	void findUsedChannels();
-	int16 getNextUnusedChannel() {
+	int16 getNextUnusedChannel() const {
 		for (int i = 0; i < 16; i++) {
 			if (!_usedChannels[i])
 				return i;