1 files changed, 86 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/Effects_Buffer.h b/plugins/gme/game-music-emu-0.6.0/gme/Effects_Buffer.h
new file mode 100644
index 00000000..061f74ab
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6.0/gme/Effects_Buffer.h
@@ -0,0 +1,86 @@
+// Multi-channel effects buffer with panning, echo and reverb
+
+// Game_Music_Emu 0.5.5
+#ifndef EFFECTS_BUFFER_H
+#define EFFECTS_BUFFER_H
+
+#include "Multi_Buffer.h"
+
+// Effects_Buffer uses several buffers and outputs stereo sample pairs.
+class Effects_Buffer : public Multi_Buffer {
+public:
+	// If center_only is true, only center buffers are created and
+	// less memory is used.
+	Effects_Buffer( bool center_only = false );
+	
+	// Channel  Effect    Center Pan
+	// ---------------------------------
+	//    0,5    reverb       pan_1
+	//    1,6    reverb       pan_2
+	//    2,7    echo         -
+	//    3      echo         -
+	//    4      echo         -
+	
+	// Channel configuration
+	struct config_t {
+		double pan_1;           // -1.0 = left, 0.0 = center, 1.0 = right
+		double pan_2;
+		double echo_delay;      // msec
+		double echo_level;      // 0.0 to 1.0
+		double reverb_delay;    // msec
+		double delay_variance;  // difference between left/right delays (msec)
+		double reverb_level;    // 0.0 to 1.0
+		bool effects_enabled;   // if false, use optimized simple mixer
+		config_t();
+	};
+	
+	// Set configuration of buffer
+	virtual void config( const config_t& );
+	void set_depth( double );
+	
+public:
+	~Effects_Buffer();
+	blargg_err_t set_sample_rate( long samples_per_sec, int msec = blip_default_length );
+	void clock_rate( long );
+	void bass_freq( int );
+	void clear();
+	channel_t channel( int, int );
+	void end_frame( blip_time_t );
+	long read_samples( blip_sample_t*, long );
+	long samples_avail() const;
+private:
+	typedef long fixed_t;
+	
+	enum { max_buf_count = 7 };
+	Blip_Buffer bufs [max_buf_count];
+	enum { chan_types_count = 3 };
+	channel_t chan_types [3];
+	config_t config_;
+	long stereo_remain;
+	long effect_remain;
+	int buf_count;
+	bool effects_enabled;
+	
+	blargg_vector<blip_sample_t> reverb_buf;
+	blargg_vector<blip_sample_t> echo_buf;
+	int reverb_pos;
+	int echo_pos;
+	
+	struct {
+		fixed_t pan_1_levels [2];
+		fixed_t pan_2_levels [2];
+		int echo_delay_l;
+		int echo_delay_r;
+		fixed_t echo_level;
+		int reverb_delay_l;
+		int reverb_delay_r;
+		fixed_t reverb_level;
+	} chans;
+	
+	void mix_mono( blip_sample_t*, blargg_long );
+	void mix_stereo( blip_sample_t*, blargg_long );
+	void mix_enhanced( blip_sample_t*, blargg_long );
+	void mix_mono_enhanced( blip_sample_t*, blargg_long );
+};
+
+#endif