cog/Frameworks/GME/gme/Spc_Sfm.h

79 lines
2.4 KiB
C++

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