diff options
Diffstat (limited to 'plugins/gme/game-music-emu-0.5.5/gme/Gb_Apu.h')
-rw-r--r-- | plugins/gme/game-music-emu-0.5.5/gme/Gb_Apu.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/plugins/gme/game-music-emu-0.5.5/gme/Gb_Apu.h b/plugins/gme/game-music-emu-0.5.5/gme/Gb_Apu.h deleted file mode 100644 index e74ebc55..00000000 --- a/plugins/gme/game-music-emu-0.5.5/gme/Gb_Apu.h +++ /dev/null @@ -1,90 +0,0 @@ -// Nintendo Game Boy PAPU sound chip emulator - -// Gb_Snd_Emu 0.1.5 -#ifndef GB_APU_H -#define GB_APU_H - -#include "Gb_Oscs.h" - -class Gb_Apu { -public: - - // Set overall volume of all oscillators, where 1.0 is full volume - void volume( double ); - - // Set treble equalization - void treble_eq( const blip_eq_t& ); - - // Outputs can be assigned to a single buffer for mono output, or to three - // buffers for stereo output (using Stereo_Buffer to do the mixing). - - // Assign all oscillator outputs to specified buffer(s). If buffer - // is NULL, silences all oscillators. - void output( Blip_Buffer* mono ); - void output( Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right ); - - // Assign single oscillator output to buffer(s). Valid indicies are 0 to 3, - // which refer to Square 1, Square 2, Wave, and Noise. If buffer is NULL, - // silences oscillator. - enum { osc_count = 4 }; - void osc_output( int index, Blip_Buffer* mono ); - void osc_output( int index, Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right ); - - // Reset oscillators and internal state - void reset(); - - // Reads and writes at addr must satisfy start_addr <= addr <= end_addr - enum { start_addr = 0xFF10 }; - enum { end_addr = 0xFF3F }; - enum { register_count = end_addr - start_addr + 1 }; - - // Write 'data' to address at specified time - void write_register( blip_time_t, unsigned addr, int data ); - - // Read from address at specified time - int read_register( blip_time_t, unsigned addr ); - - // Run all oscillators up to specified time, end current time frame, then - // start a new frame at time 0. - void end_frame( blip_time_t ); - - void set_tempo( double ); - -public: - Gb_Apu(); -private: - // noncopyable - Gb_Apu( const Gb_Apu& ); - Gb_Apu& operator = ( const Gb_Apu& ); - - Gb_Osc* oscs [osc_count]; - blip_time_t next_frame_time; - blip_time_t last_time; - blip_time_t frame_period; - double volume_unit; - int frame_count; - - Gb_Square square1; - Gb_Square square2; - Gb_Wave wave; - Gb_Noise noise; - BOOST::uint8_t regs [register_count]; - Gb_Square::Synth square_synth; // used by squares - Gb_Wave::Synth other_synth; // used by wave and noise - - void update_volume(); - void run_until( blip_time_t ); - void write_osc( int index, int reg, int data ); -}; - -inline void Gb_Apu::output( Blip_Buffer* b ) { output( b, b, b ); } - -inline void Gb_Apu::osc_output( int i, Blip_Buffer* b ) { osc_output( i, b, b, b ); } - -inline void Gb_Apu::volume( double vol ) -{ - volume_unit = 0.60 / osc_count / 15 /*steps*/ / 2 /*?*/ / 8 /*master vol range*/ * vol; - update_volume(); -} - -#endif |