1 files changed, 58 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6pre/gme/Dual_Resampler.h b/plugins/gme/game-music-emu-0.6pre/gme/Dual_Resampler.h
new file mode 100644
index 00000000..6d77fd59
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6pre/gme/Dual_Resampler.h
@@ -0,0 +1,58 @@
+// Combination of Fir_Resampler and Stereo_Buffer mixing. Used by Sega FM emulators.
+
+// Game_Music_Emu 0.6-pre
+#ifndef DUAL_RESAMPLER_H
+#define DUAL_RESAMPLER_H
+
+#include "Multi_Buffer.h"
+
+#if GME_VGM_FAST_RESAMPLER
+	#include "Downsampler.h"
+	typedef Downsampler Dual_Resampler_Downsampler;
+#else
+	#include "Fir_Resampler.h"
+	typedef Fir_Resampler_Norm Dual_Resampler_Downsampler;
+#endif
+
+class Dual_Resampler {
+public:
+	typedef short dsample_t;
+	
+	blargg_err_t setup( double oversample, double rolloff, double gain );
+	double rate() const { return resampler.rate(); }
+	blargg_err_t reset( int max_pairs );
+	void resize( int pairs_per_frame );
+	void clear();
+	
+	void dual_play( int count, dsample_t out [], Stereo_Buffer& );
+	
+	blargg_callback<int (*)( void*, blip_time_t, int, dsample_t* )> set_callback;
+
+// Implementation
+public:
+	Dual_Resampler();
+	~Dual_Resampler();
+
+private:
+	enum { gain_bits = 14 };
+	blargg_vector<dsample_t> sample_buf;
+	int sample_buf_size;
+	int oversamples_per_frame;
+	int buf_pos;
+	int resampler_size;
+	int gain_;
+	
+	Dual_Resampler_Downsampler resampler;
+	void mix_samples( Stereo_Buffer&, dsample_t []);
+	void mix_mono( Stereo_Buffer&, dsample_t []);
+	void mix_stereo( Stereo_Buffer&, dsample_t []);
+	void play_frame_( Stereo_Buffer&, dsample_t []);
+};
+
+inline blargg_err_t Dual_Resampler::setup( double oversample, double rolloff, double gain )
+{
+	gain_ = (int) ((1 << gain_bits) * gain);
+	return resampler.set_rate( oversample );
+}
+
+#endif