use namespace Common a bit more; don't zero the RNG in scumm (else the seed gets reset); remove obsolete 256 color blending code

svn-id: r10592

14 files changed, 65 insertions, 137 deletions

diff --git a/backends/sdl/sdl-common.cpp b/backends/sdl/sdl-common.cpp
index cb4e49966f..ee28922e7e 100644
--- a/backends/sdl/sdl-common.cpp
+++ b/backends/sdl/sdl-common.cpp
@@ -150,7 +150,7 @@ void OSystem_SDL_Common::copy_rect(const byte *src, int pitch, int x, int y, int
 	if (_screen == NULL)
 		return;
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 	
 	if (((long)src & 3) == 0 && pitch == _screenWidth && x==0 && y==0 &&
 			w==_screenWidth && h==_screenHeight && _mode_flags&DF_WANT_RECT_OPTIM) {
@@ -218,7 +218,7 @@ void OSystem_SDL_Common::move_screen(int dx, int dy, int height) {
 	if ((dx == 0 && dy == 0) || height <= 0)
 		return;
 	
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 
 	byte *src, *dst;
 	int x, y;
@@ -1295,7 +1295,7 @@ void OSystem_SDL_Common::clear_overlay() {
 	if (!_overlayVisible)
 		return;
 	
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 	
 	// hide the mouse
 	undraw_mouse();
diff --git a/backends/sdl/sdl.cpp b/backends/sdl/sdl.cpp
index ad1c0d813c..93f8fb2a26 100644
--- a/backends/sdl/sdl.cpp
+++ b/backends/sdl/sdl.cpp
@@ -239,7 +239,7 @@ void OSystem_SDL::hotswap_gfx_mode() {
 void OSystem_SDL::update_screen() {
 	assert(_hwscreen != NULL);
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 
 	// If the shake position changed, fill the dirty area with blackness
 	if (_currentShakePos != _newShakePos) {
@@ -369,7 +369,7 @@ void OSystem_SDL::update_screen() {
 
 uint32 OSystem_SDL::property(int param, Property *value) {
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 
 	if (param == PROP_TOGGLE_FULLSCREEN) {
 		assert(_hwscreen != 0);
@@ -408,7 +408,7 @@ uint32 OSystem_SDL::property(int param, Property *value) {
 bool OSystem_SDL::save_screenshot(const char *filename) {
 	assert(_hwscreen != NULL);
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 	SDL_SaveBMP(_hwscreen, filename);
 	return true;
 }
diff --git a/backends/sdl/sdl_gl.cpp b/backends/sdl/sdl_gl.cpp
index 4fab4f0f5a..7177a9ceeb 100644
--- a/backends/sdl/sdl_gl.cpp
+++ b/backends/sdl/sdl_gl.cpp
@@ -359,7 +359,7 @@ void OSystem_SDL_OpenGL::hotswap_gfx_mode() {
 
 void OSystem_SDL_OpenGL::update_screen() {
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 
 	// If the shake position changed, fill the dirty area with blackness
 	if (_currentShakePos != _newShakePos) {
@@ -563,7 +563,7 @@ bool OSystem_SDL_OpenGL::poll_event(Event *event) {
 
 uint32 OSystem_SDL_OpenGL::property(int param, Property *value) {
 
-	StackLock lock(_graphicsMutex, this); // Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this); // Lock the mutex until this function ends
 
 	if (param == PROP_TOGGLE_FULLSCREEN) {
 		if (!_usingOpenGL)
@@ -686,7 +686,7 @@ bool OSystem_SDL_OpenGL::save_screenshot(const char *filename) {
 	if (_usingOpenGL)
 		return false;
 
-	StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
+	Common::StackLock lock(_graphicsMutex, this);	// Lock the mutex until this function ends
 
 	assert(_hwscreen != NULL);
 	SDL_SaveBMP(_hwscreen, filename);
diff --git a/common/timer.cpp b/common/timer.cpp
index cc8bf00efc..c6a139bd54 100644
--- a/common/timer.cpp
+++ b/common/timer.cpp
@@ -54,7 +54,7 @@ Timer::~Timer() {
 	_system->set_timer(0, 0);
 
 	{
-		StackLock lock(_mutex);
+		Common::StackLock lock(_mutex);
 		for (int i = 0; i < MAX_TIMERS; i++) {
 			_timerSlots[i].procedure = NULL;
 			_timerSlots[i].interval = 0;
@@ -81,7 +81,7 @@ int Timer::timer_handler(int t) {
 }
 
 int Timer::handler(int t) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	uint32 interval, l;
 
 	_lastTime = _thisTime;
@@ -102,7 +102,7 @@ int Timer::handler(int t) {
 }
 
 bool Timer::installProcedure(TimerProc procedure, int32 interval, void *refCon) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	int32 l;
 	bool found = false;
 
@@ -124,7 +124,7 @@ bool Timer::installProcedure(TimerProc procedure, int32 interval, void *refCon)
 }
 
 void Timer::releaseProcedure(TimerProc procedure) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	int32 l;
 
 	for (l = 0; l < MAX_TIMERS; l++) {
diff --git a/common/util.cpp b/common/util.cpp
index 7732372dbb..5c85e74c70 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -22,106 +22,34 @@
 #include "base/engine.h"
 #include "common/util.h"
 
-//
-// 8-bit alpha blending routines
-//
-#ifndef NEWGUI_256
-static int BlendCache[256][256];
-#endif
-//
-// Find the entry in the given palette which matches the color defined by
-// the tripel (r,b,g) most closely.
-//
-int RGBMatch(byte *palette, int r, int g, int b) {
-	int i, bestidx = 0, besterr = 0xFFFFFF;
-	int error = 0;
-
-	for (i = 0;i < 256;i++) {
-		byte *pal = palette + (i * 3);
-		int r_diff = r - (int)*pal++; 
-		int g_diff = g - (int)*pal++; 
-		int b_diff = b - (int)*pal++; 
-		r_diff *= r_diff; g_diff *= g_diff; b_diff *= b_diff;
-
-		error = r_diff + g_diff + b_diff;
-		if (error < besterr) {
-			besterr = error;
-			bestidx = i;
-		}
-	}
-	return bestidx;
-}
-
-//
-// Blend two 8 bit colors into a third, all colors being defined by palette indices.
-//
-int Blend(int src, int dst, byte *palette) {
-#ifndef NEWGUI_256
-	int r, g, b;
-	int alpha = 128;	// Level of transparency [0-256]
-	byte *srcpal = palette + (dst * 3);
-	byte *dstpal = palette + (src * 3);
-
-	if (BlendCache[dst][src] > -1)
-		return BlendCache[dst][src];
-
-	r =  (*srcpal++ * alpha);
-	r += (*dstpal++ * (256 - alpha));
-	r /= 256;
-
-	g =  (*srcpal++ * alpha);
-	g += (*dstpal++ * (256 - alpha));
-	g /= 256;
-
-	b =  (*srcpal++ * alpha);
-	b += (*dstpal++  * (256 - alpha));
-	b /= 256;
-
-	return (BlendCache[dst][src] = RGBMatch(palette, r , g , b ));
-#else
-	return 0;
-#endif
-}
-
-//
-// Reset the blending cache
-//
-void ClearBlendCache() {
-#ifndef NEWGUI_256
-	for (int i = 0; i < 256; i++)
-		for (int j = 0 ; j < 256 ; j++)
-//			BlendCache[i][j] = i;	// No alphablending
-//			BlendCache[i][j] = j;	// 100% translucent
-			BlendCache[i][j] = -1;	// Enable alphablending
-#endif
-}
+namespace Common {
 
 //
 // Print hexdump of the data passed in
 //
-void hexdump(const byte * data, int len, int bytes_per_line) {
-	assert(1 <= bytes_per_line && bytes_per_line <= 32);
+void hexdump(const byte * data, int len, int bytesPerLine) {
+	assert(1 <= bytesPerLine && bytesPerLine <= 32);
 	int i;
 	byte c;
 	int offset = 0;
-	while (len >= bytes_per_line) {
+	while (len >= bytesPerLine) {
 		printf("%06x: ", offset);
-		for (i = 0; i < bytes_per_line; i++) {
+		for (i = 0; i < bytesPerLine; i++) {
 			printf("%02x ", data[i]);
 			if (i % 4 == 3)
 				printf(" ");
 		}
 		printf(" |");
-		for (i = 0; i < bytes_per_line; i++) {
+		for (i = 0; i < bytesPerLine; i++) {
 			c = data[i];
 			if (c < 32 || c >= 127)
 				c = '.';
 			printf("%c", c);
 		}
 		printf("|\n");
-		data += bytes_per_line;
-		len -= bytes_per_line;
-		offset += bytes_per_line;
+		data += bytesPerLine;
+		len -= bytesPerLine;
+		offset += bytesPerLine;
 	}
 
 	if (len <= 0) 
@@ -133,7 +61,7 @@ void hexdump(const byte * data, int len, int bytes_per_line) {
 		if (i % 4 == 3)
 			printf(" ");
 	}
-	for (; i < bytes_per_line; i++)
+	for (; i < bytesPerLine; i++)
 		printf("   ");
 	printf(" |");
 	for (i = 0; i < len; i++) {
@@ -142,7 +70,7 @@ void hexdump(const byte * data, int len, int bytes_per_line) {
 			c = '.';
 		printf("%c", c);
 	}
-	for (; i < bytes_per_line; i++)
+	for (; i < bytesPerLine; i++)
 		printf(" ");
 	printf("|\n");
 }
@@ -187,3 +115,4 @@ void StackLock::unlock() {
 	_syst->unlock_mutex(_mutex);
 }
 
+}	// End of namespace Common
diff --git a/common/util.h b/common/util.h
index 14ab36f4b0..a62511d6da 100644
--- a/common/util.h
+++ b/common/util.h
@@ -35,22 +35,20 @@ template<typename T> inline void SWAP(T &a, T &b) { T tmp = a; a = b; b = tmp; }
 
 #define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0])))
 
-int RGBMatch(byte *palette, int r, int g, int b);
-int Blend(int src, int dst, byte *palette);
-void ClearBlendCache();
+namespace Common {
 
 /**
- * Print a hexdump of the data passed in. The number of bytes per line
- * is customizable.
+ * Print a hexdump of the data passed in. The number of bytes per line is
+ * customizable.
  * @param data	the data to be dumped
  * @param len	the lenght of that data
  * @param bytes_per_line	number of bytes to print per line (default: 16)
  */
-void hexdump(const byte * data, int len, int bytes_per_line = 16);
+void hexdump(const byte * data, int len, int bytesPerLine = 16);
 
 /**
- * A simple random number generator. Although it is definitely not suitable
- * for cryptographic purposes, it serves our purposes just fine.
+ * Simple random number generator. Although it is definitely not suitable for
+ * cryptographic purposes, it serves our purposes just fine.
  */
 class RandomSource {
 private:
@@ -88,6 +86,8 @@ public:
 	~StackLock();
 };
 
+}	// End of namespace Common
+
 
 
 #if defined(__GNUC__)
diff --git a/scumm/script_v5.cpp b/scumm/script_v5.cpp
index b06830ce08..857883cfa2 100644
--- a/scumm/script_v5.cpp
+++ b/scumm/script_v5.cpp
@@ -907,7 +907,7 @@ void ScummEngine_v5::saveVars() {
 void ScummEngine_v5::loadVars() {
 	int a, b;
 
-	hexdump(_scriptPointer, 64);
+//	Common::hexdump(_scriptPointer, 64);
 	while ((_opcode = fetchScriptByte()) != 0) {
 		switch (_opcode & 0x1F) {
 		case 0x01: // read a range of variables
diff --git a/scumm/scumm.h b/scumm/scumm.h
index 56fded1b2b..d6664263e9 100644
--- a/scumm/scumm.h
+++ b/scumm/scumm.h
@@ -362,7 +362,7 @@ protected:
 
 public:
 	/* Random number generation */
-	RandomSource _rnd;
+	Common::RandomSource _rnd;
 
 	/* Core variable definitions */
 	byte _gameId;
diff --git a/scumm/scummvm.cpp b/scumm/scummvm.cpp
index 9a23af9d6d..9bf268886c 100644
--- a/scumm/scummvm.cpp
+++ b/scumm/scummvm.cpp
@@ -296,7 +296,6 @@ ScummEngine::ScummEngine(GameDetector *detector, OSystem *syst)
 	_confirmExitDialog = NULL;
 	_debuggerDialog = NULL;
 	_fastMode = 0;
-	memset(&_rnd, 0, sizeof(RandomSource));
 	_gameId = 0;
 	memset(&gdi, 0, sizeof(Gdi));
 	_actors = NULL;
diff --git a/simon/simon.h b/simon/simon.h
index e9a4ce92c0..c5f47671f2 100644
--- a/simon/simon.h
+++ b/simon/simon.h
@@ -347,7 +347,7 @@ protected:
 	byte *_sdl_buf;
 	byte *_sdl_buf_attached;
 
-	RandomSource _rnd;
+	Common::RandomSource _rnd;
 
 	byte *_vc_10_base_ptr_old;
 	byte _hebrew_char_widths[32];
diff --git a/sky/logic.h b/sky/logic.h
index 52dfa4bb04..8b0859591b 100644
--- a/sky/logic.h
+++ b/sky/logic.h
@@ -255,7 +255,7 @@ protected:
 
 	uint32 _currentSection;
 
-	RandomSource _rnd;
+	Common::RandomSource _rnd;
 	
 	SkyScreen *_skyScreen;
 	SkyDisk *_skyDisk;
diff --git a/sound/mixer.cpp b/sound/mixer.cpp
index a8d611588f..a46ad18db7 100644
--- a/sound/mixer.cpp
+++ b/sound/mixer.cpp
@@ -161,18 +161,18 @@ bool SoundMixer::bindToSystem(OSystem *syst) {
 }
 
 void SoundMixer::setupPremix(PremixProc *proc, void *param) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	_premixParam = param;
 	_premixProc = proc;
 }
 
 int SoundMixer::newStream(PlayingSoundHandle *handle, void *sound, uint32 size, uint rate, byte flags, uint32 buffer_size, byte volume, int8 pan) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	return insertChannel(handle, new ChannelStream(this, handle, sound, size, rate, flags, buffer_size, volume, pan));
 }
 
 void SoundMixer::appendStream(PlayingSoundHandle handle, void *sound, uint32 size) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	
 	if (handle == 0)
 		return;
@@ -198,7 +198,7 @@ void SoundMixer::appendStream(PlayingSoundHandle handle, void *sound, uint32 siz
 }
 
 void SoundMixer::endStream(PlayingSoundHandle handle) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	
 	// Simply ignore stop requests for handles of sounds that already terminated
 	if (handle == 0)
@@ -245,7 +245,7 @@ int SoundMixer::insertChannel(PlayingSoundHandle *handle, Channel *chan) {
 }
 
 int SoundMixer::playRaw(PlayingSoundHandle *handle, void *sound, uint32 size, uint rate, byte flags, int id, byte volume, int8 pan, uint32 loopStart, uint32 loopEnd) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	// Prevent duplicate sounds
 	if (id != -1) {
@@ -259,24 +259,24 @@ int SoundMixer::playRaw(PlayingSoundHandle *handle, void *sound, uint32 size, ui
 
 #ifdef USE_MAD
 int SoundMixer::playMP3(PlayingSoundHandle *handle, File *file, uint32 size, byte volume, int8 pan) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	return insertChannel(handle, new ChannelMP3(this, handle, file, size, volume, pan));
 }
 int SoundMixer::playMP3CDTrack(PlayingSoundHandle *handle, File *file, mad_timer_t duration, byte volume, int8 pan) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	return insertChannel(handle, new ChannelMP3CDMusic(this, handle, file, duration, volume, pan));
 }
 #endif
 
 #ifdef USE_VORBIS
 int SoundMixer::playVorbis(PlayingSoundHandle *handle, OggVorbis_File *ov_file, int duration, bool is_cd_track, byte volume, int8 pan) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	return insertChannel(handle, new ChannelVorbis(this, handle, ov_file, duration, is_cd_track, volume, pan));
 }
 #endif
 
 void SoundMixer::mix(int16 *buf, uint len) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	if (_premixProc && !_paused) {
 		_premixProc(_premixParam, buf, len);
@@ -302,7 +302,7 @@ void SoundMixer::mixCallback(void *s, byte *samples, int len) {
 }
 
 void SoundMixer::stopAll() {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	for (int i = 0; i != NUM_CHANNELS; i++)
 		if (_channels[i])
 			_channels[i]->destroy();
@@ -314,13 +314,13 @@ void SoundMixer::stopChannel(int index) {
 		return;
 	}
 
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	if (_channels[index])
 		_channels[index]->destroy();
 }
 
 void SoundMixer::stopID(int id) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	for (int i = 0; i != NUM_CHANNELS; i++) {
 		if (_channels[i] != NULL && _channels[i]->_id == id) {
 			_channels[i]->destroy();
@@ -330,7 +330,7 @@ void SoundMixer::stopID(int id) {
 }
 
 void SoundMixer::stopHandle(PlayingSoundHandle handle) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	
 	// Simply ignore stop requests for handles of sounds that already terminated
 	if (handle == 0)
@@ -348,7 +348,7 @@ void SoundMixer::stopHandle(PlayingSoundHandle handle) {
 }
 
 void SoundMixer::setChannelVolume(PlayingSoundHandle handle, byte volume) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	
 	if (handle == 0)
 		return;
@@ -365,7 +365,7 @@ void SoundMixer::setChannelVolume(PlayingSoundHandle handle, byte volume) {
 }
 
 void SoundMixer::setChannelPan(PlayingSoundHandle handle, int8 pan) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	
 	if (handle == 0)
 		return;
@@ -391,13 +391,13 @@ void SoundMixer::pauseChannel(int index, bool paused) {
 		return;
 	}
 
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	if (_channels[index])
 		_channels[index]->pause(paused);
 }
 
 void SoundMixer::pauseID(int id, bool paused) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	for (int i = 0; i != NUM_CHANNELS; i++) {
 		if (_channels[i] != NULL && _channels[i]->_id == id) {
 			_channels[i]->pause(paused);
@@ -407,7 +407,7 @@ void SoundMixer::pauseID(int id, bool paused) {
 }
 
 void SoundMixer::pauseHandle(PlayingSoundHandle handle, bool paused) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	// Simply ignore pause/unpause requests for handles of sound that alreayd terminated
 	if (handle == 0)
@@ -429,7 +429,7 @@ bool SoundMixer::hasActiveSFXChannel() {
 	// (and maybe also voice) here to work properly in iMuseDigital
 	// games. In the past that was achieve using the _beginSlots hack.
 	// Since we don't have that anymore, it's not that simple anymore.
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 	for (int i = 0; i != NUM_CHANNELS; i++)
 		if (_channels[i] && !_channels[i]->isMusicChannel())
 			return true;
diff --git a/sound/mpu401.cpp b/sound/mpu401.cpp
index aa798005ad..e6391016c7 100644
--- a/sound/mpu401.cpp
+++ b/sound/mpu401.cpp
@@ -126,7 +126,7 @@ MidiChannel *MidiDriver_MPU401::allocateChannel() {
 	return NULL;
 }
 
-void MidiDriver_MPU401::setTimerCallback (void *timer_param, TimerProc timer_proc) {
+void MidiDriver_MPU401::setTimerCallback(void *timer_param, TimerProc timer_proc) {
 	if (!_timer_proc || !timer_proc) {
 		if (_timer_proc)
 			g_timer->releaseProcedure(_timer_proc);
diff --git a/sword2/driver/d_sound.cpp b/sword2/driver/d_sound.cpp
index eb160b7e27..856cddf8c6 100644
--- a/sword2/driver/d_sound.cpp
+++ b/sword2/driver/d_sound.cpp
@@ -180,7 +180,7 @@ void Sound::reverseStereo(void) {
 // after the credits.
 
 void Sound::saveMusicState() {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	int saveStream;
 
@@ -203,7 +203,7 @@ void Sound::saveMusicState() {
 }
 
 void Sound::restoreMusicState() {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	int restoreStream;
 
@@ -272,7 +272,7 @@ int32 Sound::isFxOpen(int32 id) {
 }
 
 void Sound::fxServer(int16 *data, uint len) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	if (!_soundOn)
 		return;
@@ -899,7 +899,7 @@ uint8 Sound::isFxMute(void) {
  */
 
 int32 Sound::streamCompMusic(const char *filename, uint32 musicId, bool looping) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	uint32 len;
 	int32 primaryStream = -1;
@@ -1062,7 +1062,7 @@ int32 Sound::dipMusic() {
  */
 
 int32 Sound::musicTimeRemaining() {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	for (int i = 0; i < MAXMUS; i++) {
 		if (_music[i]._streaming && !_music[i]._fading)
@@ -1077,7 +1077,7 @@ int32 Sound::musicTimeRemaining() {
  */
 
 void Sound::stopMusic(void) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	for (int i = 0; i < MAXMUS; i++) {
 		if (_music[i]._streaming)
@@ -1092,7 +1092,7 @@ void Sound::stopMusic(void) {
  */
 
 void Sound::pauseMusic(void) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	if (_soundOn) {
 		for (int i = 0; i < MAXMUS; i++) {
@@ -1110,7 +1110,7 @@ void Sound::pauseMusic(void) {
  */
 
 void Sound::unpauseMusic(void) {
-	StackLock lock(_mutex);
+	Common::StackLock lock(_mutex);
 
 	if (_soundOn) {
 		for (int i = 0; i < MAXMUS; i++)