79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
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// Super Nintendo SFM music file emulator
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#ifndef SPC_SFM_H
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#define SPC_SFM_H
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#include "Fir_Resampler.h"
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#include "Music_Emu.h"
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#include "../higan/smp/smp.hpp"
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#include "Spc_Filter.h"
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#include "Bml_Parser.h"
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class Sfm_Emu : public Music_Emu {
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public:
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// Minimum allowed file size
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enum { sfm_min_file_size = 8 + 65536 + 128 };
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// The Super Nintendo hardware samples at 32kHz. Other sample rates are
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// handled by resampling the 32kHz output; emulation accuracy is not affected.
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enum { native_sample_rate = 32000 };
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// This will serialize the current state of the emulator into a new SFM file
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blargg_err_t serialize( std::vector<uint8_t> & out );
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// Disables annoying pseudo-surround effect some music uses
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void disable_surround( bool disable = true );
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// Enables gaussian=0, cubic=1 or sinc=2 interpolation
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// Or sets worse quality, linear=-1, nearest=-2
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void interpolation_level( int level = 0 );
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// Enables native echo
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void enable_echo(bool enable = true);
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void mute_effects(bool mute);
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SuperFamicom::SMP const* get_smp() const;
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SuperFamicom::SMP * get_smp();
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static gme_type_t static_type() { return gme_sfm_type; }
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public:
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Sfm_Emu();
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~Sfm_Emu();
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protected:
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blargg_err_t load_mem_( byte const [], long );
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blargg_err_t track_info_( track_info_t*, int track ) const;
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blargg_err_t set_track_info_( const track_info_t*, int track );
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blargg_err_t set_sample_rate_( long );
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blargg_err_t start_track_( int );
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blargg_err_t play_( long, sample_t [] );
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blargg_err_t skip_( long );
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void mute_voices_( int );
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void set_tempo_( double );
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void enable_accuracy_( bool );
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byte const* file_data;
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long file_size;
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private:
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Fir_Resampler<24> resampler;
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SPC_Filter filter;
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SuperFamicom::SMP smp;
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Bml_Parser metadata;
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blargg_err_t play_and_filter( long count, sample_t out [] );
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};
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inline void Sfm_Emu::disable_surround( bool disable ) { smp.dsp.disable_surround( disable ); }
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inline void Sfm_Emu::interpolation_level( int level ) { smp.dsp.spc_dsp.interpolation_level( level ); }
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inline void Sfm_Emu::enable_echo(bool enable) { smp.dsp.spc_dsp.enable_echo(enable); }
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inline void Sfm_Emu::mute_effects(bool mute) { enable_echo(!mute); }
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inline SuperFamicom::SMP const* Sfm_Emu::get_smp() const { return &smp; }
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inline SuperFamicom::SMP * Sfm_Emu::get_smp() { return &smp; }
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#endif // SPC_SFM_H
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