Rework ListMidi so it can be more easily added to more backends.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3836

src/gui/midi.cpp

@@ -25,6 +25,7 @@
 #include "SDL.h"
 
 #include "dosbox.h"
+#include "midi.h"
 #include "cross.h"
 #include "support.h"
 #include "setup.h"
@@ -33,7 +34,6 @@
 #include "hardware.h"
 #include "timer.h"
 
-#define SYSEX_SIZE 1024
 #define RAWBUF	1024
 
 Bit8u MIDI_evt_len[256] = {
@@ -59,23 +59,11 @@ Bit8u MIDI_evt_len[256] = {
   0,2,3,2, 0,0,1,0, 1,0,1,1, 1,0,1,0   // 0xf0
 };
 
-class MidiHandler;
+MidiHandler * handler_list = 0;
 
-MidiHandler * handler_list=0;
-
-class MidiHandler {
-public:
-	MidiHandler() {
-		next=handler_list;
-		handler_list=this;
-	};
-	virtual bool Open(const char * /*conf*/) { return true; };
-	virtual void Close(void) {};
-	virtual void PlayMsg(Bit8u * /*msg*/) {};
-	virtual void PlaySysex(Bit8u * /*sysex*/,Bitu /*len*/) {};
-	virtual const char * GetName(void) { return "none"; };
-	virtual ~MidiHandler() { };
-	MidiHandler * next;
+MidiHandler::MidiHandler(){
+	next = handler_list;
+	handler_list = this;
 };
 
 MidiHandler Midi_none;
@@ -103,21 +91,7 @@ MidiHandler Midi_none;
 
 #endif
 
-static struct {
-	Bitu status;
-	Bitu cmd_len;
-	Bitu cmd_pos;
-	Bit8u cmd_buf[8];
-	Bit8u rt_buf[8];
-	struct {
-		Bit8u buf[SYSEX_SIZE];
-		Bitu used;
-		Bitu delay;
-		Bit32u start;
-	} sysex;
-	bool available;
-	MidiHandler * handler;
-} midi;
+DB_Midi midi;
 
 void MIDI_RawOutByte(Bit8u data) {
 	if (midi.sysex.start) {

src/gui/midi_win32.h

@@ -87,6 +87,14 @@ public:
 			return;
 		}
 	}
+	void ListAll(Program* base) {
+		unsigned int total = midiOutGetNumDevs();	
+		for(unsigned int i = 0;i < total;i++) {
+			MIDIOUTCAPS mididev;
+			midiOutGetDevCaps(i, &mididev, sizeof(MIDIOUTCAPS));
+			base->WriteOut("%2d\t \"%s\"\n",i,mididev.szPname);
+		}
+	}
 };
 
 MidiHandler_win32 Midi_win32; 

src/hardware/mixer.cpp

@@ -47,6 +47,7 @@
 #include "mapper.h"
 #include "hardware.h"
 #include "programs.h"
+#include "midi.h"
 
 #define MIXER_SSIZE 4
 #define MIXER_SHIFT 14
@@ -577,15 +578,7 @@ private:
 	}
 
 	void ListMidi(){
-#if defined (WIN32)
-		unsigned int total = midiOutGetNumDevs();	
-		for(unsigned int i=0;i<total;i++) {
-			MIDIOUTCAPS mididev;
-			midiOutGetDevCaps(i, &mididev, sizeof(MIDIOUTCAPS));
-			WriteOut("%2d\t \"%s\"\n",i,mididev.szPname);
-		}
-#endif
-	return;
+		if(midi.handler) midi.handler->ListAll(this);
 	};
 
 };