From bed9da8b9dbbaa19d317f71663e42875c1717fda Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Thu, 30 Apr 2015 00:01:30 -0400
Subject: AUDIO: Remove all AudioStream access to OPL

---
 engines/sherlock/scalpel/drivers/adlib.cpp | 31 ++++++++++--------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

(limited to 'engines/sherlock/scalpel/drivers')

diff --git a/engines/sherlock/scalpel/drivers/adlib.cpp b/engines/sherlock/scalpel/drivers/adlib.cpp
index 033b4740a7..29a39f0c39 100644
--- a/engines/sherlock/scalpel/drivers/adlib.cpp
+++ b/engines/sherlock/scalpel/drivers/adlib.cpp
@@ -216,11 +216,11 @@ uint16 frequencyLookUpTable[SHERLOCK_ADLIB_NOTES_COUNT] = {
 	0x1DE6, 0x1E03, 0x1E22, 0x1E42, 0x1E65, 0x1E89
 };
 
-class MidiDriver_SH_AdLib : public MidiDriver_Emulated {
+class MidiDriver_SH_AdLib : public MidiDriver {
 public:
 	MidiDriver_SH_AdLib(Audio::Mixer *mixer)
-		: MidiDriver_Emulated(mixer), _masterVolume(15), _opl(0),
-		  _adlibTimerProc(0), _adlibTimerParam(0) {
+		: _masterVolume(15), _opl(0),
+		  _adlibTimerProc(0), _adlibTimerParam(0), _isOpen(false) {
 		memset(_voiceChannelMapping, 0, sizeof(_voiceChannelMapping));
 	}
 	virtual ~MidiDriver_SH_AdLib() { }
@@ -231,17 +231,12 @@ public:
 	void send(uint32 b);
 	MidiChannel *allocateChannel() { return NULL; }
 	MidiChannel *getPercussionChannel() { return NULL; }
+	bool isOpen() const { return _isOpen; }
+	uint32 getBaseTempo() { return 1000000 / OPL::OPL::kDefaultCallbackFrequency; }
 
-	// AudioStream
-	int readBuffer(int16 *data, const int numSamples);
-	bool isStereo() const { return false; }
-	int getRate() const { return _mixer->getOutputRate(); }
 	int getPolyphony() const { return SHERLOCK_ADLIB_VOICES_COUNT; }
 	bool hasRhythmChannel() const { return false; }
 
-	// MidiDriver_Emulated
-	void generateSamples(int16 *buf, int len);
-
 	virtual void setTimerCallback(void *timerParam, Common::TimerManager::TimerProc timerProc);
 
 	void setVolume(byte volume);
@@ -268,6 +263,8 @@ private:
 	Common::TimerManager::TimerProc _adlibTimerProc;
 	void *_adlibTimerParam;
 
+	bool _isOpen;
+
 	// points to a MIDI channel for each of the new voice channels
 	byte _voiceChannelMapping[SHERLOCK_ADLIB_VOICES_COUNT];
 
@@ -299,16 +296,16 @@ int MidiDriver_SH_AdLib::open() {
 
 	_opl->init();
 
-	MidiDriver_Emulated::open();
+	_isOpen = true;
 
 	_opl->start(new Common::Functor0Mem<void, MidiDriver_SH_AdLib>(this, &MidiDriver_SH_AdLib::onTimer));
-	_mixer->playStream(Audio::Mixer::kPlainSoundType, &_mixerSoundHandle, this, -1, _mixer->kMaxChannelVolume, 0, DisposeAfterUse::NO);
 
 	return 0;
 }
 
 void MidiDriver_SH_AdLib::close() {
-	_mixer->stopHandle(_mixerSoundHandle);
+	// Stop the OPL timer
+	_opl->stop();
 
 	delete _opl;
 }
@@ -427,14 +424,6 @@ void MidiDriver_SH_AdLib::send(uint32 b) {
 	}
 }
 
-void MidiDriver_SH_AdLib::generateSamples(int16 *data, int len) {
-	// Dummy implementation until we no longer inherit from MidiDriver_Emulated
-}
-
-int MidiDriver_SH_AdLib::readBuffer(int16 *data, const int numSamples) {
-	return _opl->readBuffer(data, numSamples);
-}
-
 void MidiDriver_SH_AdLib::noteOn(byte MIDIchannel, byte note, byte velocity) {
 	int16  oldestInUseChannel = -1;
 	uint16 oldestInUseTimer   = 0;
-- 
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