diff options
Diffstat (limited to 'plugins/gme/Game_Music_Emu-0.5.2/gme/Kss_Scc_Apu.h')
-rw-r--r-- | plugins/gme/Game_Music_Emu-0.5.2/gme/Kss_Scc_Apu.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/gme/Kss_Scc_Apu.h b/plugins/gme/Game_Music_Emu-0.5.2/gme/Kss_Scc_Apu.h deleted file mode 100644 index 03a6a108..00000000 --- a/plugins/gme/Game_Music_Emu-0.5.2/gme/Kss_Scc_Apu.h +++ /dev/null @@ -1,106 +0,0 @@ -// Konami SCC sound chip emulator - -// Game_Music_Emu 0.5.2 -#ifndef KSS_SCC_APU_H -#define KSS_SCC_APU_H - -#include "blargg_common.h" -#include "Blip_Buffer.h" -#include <string.h> - -class Scc_Apu { -public: - // Set buffer to generate all sound into, or disable sound if NULL - void output( Blip_Buffer* ); - - // Reset sound chip - void reset(); - - // Write to register at specified time - enum { reg_count = 0x90 }; - void write( blip_time_t time, int reg, int data ); - - // Run sound to specified time, end current time frame, then start a new - // time frame at time 0. Time frames have no effect on emulation and each - // can be whatever length is convenient. - void end_frame( blip_time_t length ); - -// Additional features - - // Set sound output of specific oscillator to buffer, where index is - // 0 to 4. If buffer is NULL, the specified oscillator is muted. - enum { osc_count = 5 }; - void osc_output( int index, Blip_Buffer* ); - - // Set overall volume (default is 1.0) - void volume( double ); - - // Set treble equalization (see documentation) - void treble_eq( blip_eq_t const& ); - -public: - Scc_Apu(); -private: - enum { amp_range = 0x8000 }; - struct osc_t - { - int delay; - int phase; - int last_amp; - Blip_Buffer* output; - }; - osc_t oscs [osc_count]; - blip_time_t last_time; - unsigned char regs [reg_count]; - Blip_Synth<blip_med_quality,1> synth; - - void run_until( blip_time_t ); -}; - -inline void Scc_Apu::volume( double v ) { synth.volume( 0.43 / osc_count / amp_range * v ); } - -inline void Scc_Apu::treble_eq( blip_eq_t const& eq ) { synth.treble_eq( eq ); } - -inline void Scc_Apu::osc_output( int index, Blip_Buffer* b ) -{ - assert( (unsigned) index < osc_count ); - oscs [index].output = b; -} - -inline void Scc_Apu::write( blip_time_t time, int addr, int data ) -{ - assert( (unsigned) addr < reg_count ); - run_until( time ); - regs [addr] = data; -} - -inline void Scc_Apu::end_frame( blip_time_t end_time ) -{ - if ( end_time > last_time ) - run_until( end_time ); - last_time -= end_time; - assert( last_time >= 0 ); -} - -inline void Scc_Apu::output( Blip_Buffer* buf ) -{ - for ( int i = 0; i < osc_count; i++ ) - oscs [i].output = buf; -} - -inline Scc_Apu::Scc_Apu() -{ - output( 0 ); -} - -inline void Scc_Apu::reset() -{ - last_time = 0; - - for ( int i = 0; i < osc_count; i++ ) - memset( &oscs [i], 0, offsetof (osc_t,output) ); - - memset( regs, 0, sizeof regs ); -} - -#endif |