1 files changed, 119 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6pre/gme/Hes_Core.h b/plugins/gme/game-music-emu-0.6pre/gme/Hes_Core.h
new file mode 100644
index 00000000..0f5cbf8c
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6pre/gme/Hes_Core.h
@@ -0,0 +1,119 @@
+// TurboGrafx-16/PC Engine HES music file emulator core
+
+// Game_Music_Emu 0.6-pre
+#ifndef HES_CORE_H
+#define HES_CORE_H
+
+#include "Gme_Loader.h"
+#include "Rom_Data.h"
+#include "Hes_Apu.h"
+#include "Hes_Apu_Adpcm.h"
+#include "Hes_Cpu.h"
+
+class Hes_Core : public Gme_Loader {
+public:
+
+	// HES file header
+	enum { info_offset = 0x20 };
+	struct header_t
+	{
+		enum { size = 0x20 };
+		
+		byte tag       [4];
+		byte vers;
+		byte first_track;
+		byte init_addr [2];
+		byte banks     [8];
+		byte data_tag  [4];
+		byte data_size [4];
+		byte addr      [4];
+		byte unused    [4];
+		
+		// True if header has valid file signature
+		bool valid_tag() const;
+	};
+	
+	// Header for currently loaded file
+	header_t const& header() const      { return header_; }
+	
+	// Pointer to ROM data, for getting track information from
+	byte const* data() const            { return rom.begin(); }
+	
+	// Adjusts rate play routine is called at, where 1.0 is normal.
+	// Can be changed while track is playing.
+	void set_tempo( double );
+	
+	// Sound chip
+	Hes_Apu& apu()                      { return apu_; }
+
+	Hes_Apu_Adpcm& adpcm()              { return adpcm_; }
+	
+	// Starts track
+	blargg_err_t start_track( int );
+	
+	// Ends time frame at time t
+	typedef int time_t;
+	blargg_err_t end_frame( time_t );
+
+// Implementation
+public:
+	Hes_Core();
+	~Hes_Core();
+	virtual void unload();
+	
+protected:
+	virtual blargg_err_t load_( Data_Reader& );
+
+private:
+	enum { idle_addr = 0x1FFF };
+	
+	typedef int addr_t;
+	Hes_Cpu  cpu;
+	Rom_Data rom;
+	header_t header_;
+	time_t   play_period;
+	int      timer_base;
+	
+	struct {
+		time_t last_time;
+		int    count;
+		int    load;
+		int    raw_load;
+		byte   enabled;
+		byte   fired;
+	} timer;
+	
+	struct {
+		time_t next_vbl;
+		byte   latch;
+		byte   control;
+	} vdp;
+	
+	struct {
+		time_t timer;
+		time_t vdp;
+		byte   disables;
+	} irq;
+	
+	void recalc_timer_load();
+	
+	// large items
+	byte*   write_pages [Hes_Cpu::page_count + 1]; // 0 if unmapped or I/O space
+	Hes_Apu apu_;
+	Hes_Apu_Adpcm adpcm_;
+	byte    ram [Hes_Cpu::page_size];
+	byte    sgx [3 * Hes_Cpu::page_size + Hes_Cpu::cpu_padding];
+	
+	void irq_changed();
+	void run_until( time_t );
+	bool run_cpu( time_t end );
+	int  read_mem_( addr_t );
+	int  read_mem( addr_t );
+	void write_mem_( addr_t, int data );
+	void write_mem( addr_t, int );
+	void write_vdp( int addr, int data );
+	void set_mmr( int reg, int bank );
+	int  cpu_done();
+};
+
+#endif