1 files changed, 82 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/Gym_Emu.h b/plugins/gme/game-music-emu-0.6.0/gme/Gym_Emu.h
new file mode 100644
index 00000000..f2e13238
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6.0/gme/Gym_Emu.h
@@ -0,0 +1,82 @@
+// Sega Genesis/Mega Drive GYM music file emulator
+// Includes with PCM timing recovery to improve sample quality.
+
+// Game_Music_Emu 0.5.5
+#ifndef GYM_EMU_H
+#define GYM_EMU_H
+
+#include "Dual_Resampler.h"
+#include "Ym2612_Emu.h"
+#include "Music_Emu.h"
+#include "Sms_Apu.h"
+
+class Gym_Emu : public Music_Emu, private Dual_Resampler {
+public:
+	// GYM file header
+	enum { header_size = 428 };
+	struct header_t
+	{
+	    char tag [4];
+	    char song [32];
+	    char game [32];
+	    char copyright [32];
+	    char emulator [32];
+	    char dumper [32];
+	    char comment [256];
+	    byte loop_start [4]; // in 1/60 seconds, 0 if not looped
+	    byte packed [4];
+	};
+	
+	// Header for currently loaded file
+	header_t const& header() const { return header_; }
+	
+	static gme_type_t static_type() { return gme_gym_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 ); }
+	enum { gym_rate = 60 }; 
+	long track_length() const; // use track_info()
+
+public:
+	Gym_Emu();
+	~Gym_Emu();
+protected:
+	blargg_err_t load_mem_( byte const*, long );
+	blargg_err_t track_info_( track_info_t*, int track ) const;
+	blargg_err_t set_sample_rate_( long sample_rate );
+	blargg_err_t start_track_( int );
+	blargg_err_t play_( long count, sample_t* );
+	void mute_voices_( int );
+	void set_tempo_( double );
+	int play_frame( blip_time_t blip_time, int sample_count, sample_t* buf );
+private:
+	// sequence data begin, loop begin, current position, end
+	const byte* data;
+	const byte* loop_begin;
+	const byte* pos;
+	const byte* data_end;
+	blargg_long loop_remain; // frames remaining until loop beginning has been located
+	header_t header_;
+	double fm_sample_rate;
+	blargg_long clocks_per_frame;
+	void parse_frame();
+	
+	// dac (pcm)
+	int dac_amp;
+	int prev_dac_count;
+	bool dac_enabled;
+	bool dac_muted;
+	void run_dac( int );
+	
+	// sound
+	Blip_Buffer blip_buf;
+	Ym2612_Emu fm;
+	Blip_Synth<blip_med_quality,1> dac_synth;
+	Sms_Apu apu;
+	byte dac_buf [1024];
+};
+
+#endif