87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
// Super Nintendo SFM music file emulator
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// Game_Music_Emu $vers
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#ifndef SPC_SFM_H
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#define SPC_SFM_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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#if GME_SPC_FAST_RESAMPLER
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#include "Upsampler.h"
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typedef Upsampler Spc_Emu_Resampler;
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#else
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#include "Fir_Resampler.h"
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typedef Fir_Resampler<24> Spc_Emu_Resampler;
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#endif
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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 ) { smp.dsp.disable_surround( disable ); }
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// Enables gaussian, cubic or sinc interpolation
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void interpolation_level( int level = 0 ) { smp.dsp.spc_dsp.interpolation_level( level ); }
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// Enables an analog signal simulation filter
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void enable_filter( bool enable = true ) { _enable_filter = enable; if (enable) filter.clear(); }
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// Enables native echo
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void enable_echo(bool enable = true) { smp.dsp.spc_dsp.enable_echo(enable); }
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virtual void mute_effects(bool mute) { enable_echo(!mute); }
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SuperFamicom::SMP const* get_smp() const;
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SuperFamicom::SMP * get_smp();
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blargg_err_t hash_( Hash_Function& ) const;
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static gme_type_t static_type() { return gme_sfm_type; }
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// Implementation
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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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virtual blargg_err_t load_mem_( byte const [], int );
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virtual blargg_err_t track_info_( track_info_t*, int track ) const;
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virtual blargg_err_t set_track_info_( const track_info_t*, int track );
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virtual blargg_err_t set_sample_rate_( int );
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virtual blargg_err_t start_track_( int );
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virtual blargg_err_t play_( int, sample_t [] );
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virtual blargg_err_t skip_( int );
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virtual void mute_voices_( int );
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virtual void set_tempo_( double );
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virtual blargg_err_t save_( gme_writer_t, void* ) const;
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private:
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Spc_Emu_Resampler resampler;
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Spc_Filter filter;
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SuperFamicom::SMP smp;
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bool _enable_filter;
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Bml_Parser metadata;
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void create_updated_metadata(Bml_Parser &out) const;
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blargg_err_t play_and_filter( int count, sample_t out [] );
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};
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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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