Begin work on communication of recording state between instances using static variables.

Source/PluginGui.cpp

@@ -27,7 +27,7 @@
 void PluginGui::updateFromParameters()
 {
 	emulatorSlider->setValue(processor->getEnumParameter("Emulator"), juce::NotificationType::dontSendNotification);
-	setRecordButtonState(processor->isRecording());
+	setRecordButtonState(processor->isThisInstanceRecording());
 
 	sineImageButton->setToggleState(false, false);
 	halfsineImageButton->setToggleState(false, false);
@@ -1498,7 +1498,7 @@ void PluginGui::buttonClicked (Button* buttonThatWasClicked)
     {
         //[UserButtonCode_recordButton] -- add your button handler code here..
 		recordButton->setToggleState(false, false);
-		if (!processor->isRecording()) {
+		if (!processor->isAnyInstanceRecording()) {
 			WildcardFileFilter wildcardFilter ("*.dro", String::empty, "DRO files");
 			FileBrowserComponent browser (FileBrowserComponent::saveMode,
 									  File::nonexistent,

Source/PluginProcessor.cpp

@@ -136,10 +136,14 @@ JuceOplvstiAudioProcessor::JuceOplvstiAudioProcessor()
 		available_channels.push_back(i);
 }
 
-bool JuceOplvstiAudioProcessor::isRecording() {
+bool JuceOplvstiAudioProcessor::isThisInstanceRecording() {
 	return NULL != recordingFile;
 }
 
+bool JuceOplvstiAudioProcessor::isAnyInstanceRecording() {
+	return Opl->IsAnInstanceRecording();
+}
+
 void JuceOplvstiAudioProcessor::startRecording(File *outputFile) {
 	recordingFile = outputFile;
 	Opl->StartCapture(outputFile->getFullPathName().toUTF8());

Source/PluginProcessor.h

@@ -26,7 +26,8 @@ public:
 	void applyPitchBend();
     ~JuceOplvstiAudioProcessor();
 
-	bool isRecording();
+	bool isThisInstanceRecording();
+	bool isAnyInstanceRecording();
 	void startRecording(File *outputFile);
 	void stopRecording();
 

Source/hiopl.cpp

@@ -5,9 +5,15 @@
 
 // A wrapper around the DOSBox and ZDoom OPL emulators.
 
+// Used by the first recording instance to claim master status
+Hiopl* Hiopl::master = NULL;
+
+bool Hiopl::IsAnInstanceRecording() {
+	return NULL != Hiopl::master;
+}
+
 Hiopl::Hiopl(int buflen, Emulator emulator) {
-	captureHandle = NULL;
-	StopCapture();
+	InitCaptureVariables();
 
 	adlib = new DBOPL::Handler();
 	zdoom = JavaOPLCreate(false);
@@ -244,9 +250,7 @@ static Bit8u dro_opl3_enable[]={
 };
 
 void Hiopl::StartCapture(const char* filepath) {
-	if (NULL != captureHandle) {
-		StopCapture();
-	} else {
+	Hiopl::master = this;
 	lastWrite = -1;
 	captureLengthBytes = 0;
 	captureStart = Time::currentTimeMillis();
@@ -294,7 +298,6 @@ void Hiopl::StartCapture(const char* filepath) {
 	for (Bit8u i = 0xe0; i <= 0xf5; i++) {
 		_CaptureRegWrite(i, regCache[i]);
 	}
-	}
 }
 
 INLINE void host_writed(Bit8u *off, Bit32u val) {
@@ -304,9 +307,18 @@ INLINE void host_writed(Bit8u *off, Bit32u val) {
 	off[3]=(Bit8u)(val >> 24);
 };
 
+void Hiopl::InitCaptureVariables() {
+	captureHandle = NULL;
+	captureLengthBytes = 0;
+	lastWrite = -1;
+	captureStart = -1;
+}
+
 void Hiopl::StopCapture() {
 	if (NULL != captureHandle) {
-		Bit32u lengthMilliseconds = (Bit32u)(3000 + Time::currentTimeMillis() - captureStart);
+		Bit16u finalDelay = (Bit16u)(Time::currentTimeMillis() - lastWrite);
+		_CaptureDelay(finalDelay);
+		Bit32u lengthMilliseconds = (Bit32u)(finalDelay + Time::currentTimeMillis() - captureStart);
 		host_writed(&dro_header[0x0c], lengthMilliseconds);
 		host_writed(&dro_header[0x10], captureLengthBytes);
 		//if (opl.raw.opl3 && opl.raw.dualopl2) host_writed(&dro_header[0x14],0x1);
@@ -317,10 +329,7 @@ void Hiopl::StopCapture() {
 		fwrite(dro_header, 1, sizeof(dro_header), captureHandle);
 		fclose(captureHandle);
 	}
-	captureHandle = NULL;
-	captureLengthBytes = 0;
-	lastWrite = -1;
-	captureStart = -1;
+	InitCaptureVariables();
 }
 
 void Hiopl::_CaptureDelay(Bit16u delayMs) {

Source/hiopl.h

@@ -58,6 +58,8 @@ class Hiopl {
 		void _WriteReg(Bit32u reg, Bit8u value, Bit8u mask=0x0);
 		void _ClearRegBits(Bit32u reg, Bit8u mask);
 
+		void InitCaptureVariables();
+		bool IsAnInstanceRecording();
 		void StartCapture(const char* filepath);
 		void StopCapture();
 
@@ -79,6 +81,7 @@ class Hiopl {
 		std::map<int, int> _op1offset;
 		std::map<int, int> _op2offset;
 
+		static Hiopl* master;
 		FILE* captureHandle;
 		Bit64s captureStart;
 		Bit64s lastWrite;