1 files changed, 106 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/Nsf_Emu.h b/plugins/gme/game-music-emu-0.6.0/gme/Nsf_Emu.h
new file mode 100644
index 00000000..6b213529
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6.0/gme/Nsf_Emu.h
@@ -0,0 +1,106 @@
+// Nintendo NES/Famicom NSF music file emulator
+
+// Game_Music_Emu 0.5.5
+#ifndef NSF_EMU_H
+#define NSF_EMU_H
+
+#include "Classic_Emu.h"
+#include "Nes_Apu.h"
+#include "Nes_Cpu.h"
+
+class Nsf_Emu : private Nes_Cpu, public Classic_Emu {
+	typedef Nes_Cpu cpu;
+public:
+	// Equalizer profiles for US NES and Japanese Famicom
+	static equalizer_t const nes_eq;
+	static equalizer_t const famicom_eq;
+	
+	// NSF file header
+	enum { header_size = 0x80 };
+	struct header_t
+	{
+		char tag [5];
+		byte vers;
+		byte track_count;
+		byte first_track;
+		byte load_addr [2];
+		byte init_addr [2];
+		byte play_addr [2];
+		char game [32];
+		char author [32];
+		char copyright [32];
+		byte ntsc_speed [2];
+		byte banks [8];
+		byte pal_speed [2];
+		byte speed_flags;
+		byte chip_flags;
+		byte unused [4];
+	};
+	
+	// Header for currently loaded file
+	header_t const& header() const { return header_; }
+	
+	static gme_type_t static_type() { return gme_nsf_type; }
+	
+public:
+	// deprecated
+	Music_Emu::load;
+	blargg_err_t load( header_t const& h, Data_Reader& in ) // use Remaining_Reader
+			{ return load_remaining_( &h, sizeof h, in ); }
+
+public:
+	Nsf_Emu();
+	~Nsf_Emu();
+	Nes_Apu* apu_() { return &apu; }
+protected:
+	blargg_err_t track_info_( track_info_t*, int track ) const;
+	blargg_err_t load_( Data_Reader& );
+	blargg_err_t start_track_( int );
+	blargg_err_t run_clocks( blip_time_t&, int );
+	void set_tempo_( double );
+	void set_voice( int, Blip_Buffer*, Blip_Buffer*, Blip_Buffer* );
+	void update_eq( blip_eq_t const& );
+	void unload();
+protected:
+	enum { bank_count = 8 };
+	byte initial_banks [bank_count];
+	nes_addr_t init_addr;
+	nes_addr_t play_addr;
+	double clock_rate_;
+	bool pal_only;
+	
+	// timing
+	Nes_Cpu::registers_t saved_state;
+	nes_time_t next_play;
+	nes_time_t play_period;
+	int play_extra;
+	int play_ready;
+	
+	enum { rom_begin = 0x8000 };
+	enum { bank_select_addr = 0x5FF8 };
+	enum { bank_size = 0x1000 };
+	Rom_Data<bank_size> rom;
+	
+public: private: friend class Nes_Cpu;
+	void cpu_jsr( nes_addr_t );
+	int cpu_read( nes_addr_t );
+	void cpu_write( nes_addr_t, int );
+	void cpu_write_misc( nes_addr_t, int );
+	enum { badop_addr = bank_select_addr };
+	
+private:
+	class Nes_Namco_Apu* namco;
+	class Nes_Vrc6_Apu*  vrc6;
+	class Nes_Fme7_Apu*  fme7;
+	Nes_Apu apu;
+	static int pcm_read( void*, nes_addr_t );
+	blargg_err_t init_sound();
+	
+	header_t header_;
+	
+	enum { sram_addr = 0x6000 };
+	byte sram [0x2000];
+	byte unmapped_code [Nes_Cpu::page_size + 8];
+};
+
+#endif