summaryrefslogtreecommitdiff
path: root/plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h')
-rw-r--r--plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h131
1 files changed, 0 insertions, 131 deletions
diff --git a/plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h b/plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h
deleted file mode 100644
index 97094897..00000000
--- a/plugins/gme/game-music-emu-0.5.5/gme/Nes_Fme7_Apu.h
+++ /dev/null
@@ -1,131 +0,0 @@
-// Sunsoft FME-7 sound emulator
-
-// Game_Music_Emu 0.5.5
-#ifndef NES_FME7_APU_H
-#define NES_FME7_APU_H
-
-#include "blargg_common.h"
-#include "Blip_Buffer.h"
-
-struct fme7_apu_state_t
-{
- enum { reg_count = 14 };
- BOOST::uint8_t regs [reg_count];
- BOOST::uint8_t phases [3]; // 0 or 1
- BOOST::uint8_t latch;
- BOOST::uint16_t delays [3]; // a, b, c
-};
-
-class Nes_Fme7_Apu : private fme7_apu_state_t {
-public:
- // See Nes_Apu.h for reference
- void reset();
- void volume( double );
- void treble_eq( blip_eq_t const& );
- void output( Blip_Buffer* );
- enum { osc_count = 3 };
- void osc_output( int index, Blip_Buffer* );
- void end_frame( blip_time_t );
- void save_state( fme7_apu_state_t* ) const;
- void load_state( fme7_apu_state_t const& );
-
- // Mask and addresses of registers
- enum { addr_mask = 0xE000 };
- enum { data_addr = 0xE000 };
- enum { latch_addr = 0xC000 };
-
- // (addr & addr_mask) == latch_addr
- void write_latch( int );
-
- // (addr & addr_mask) == data_addr
- void write_data( blip_time_t, int data );
-
-public:
- Nes_Fme7_Apu();
- BLARGG_DISABLE_NOTHROW
-private:
- // noncopyable
- Nes_Fme7_Apu( const Nes_Fme7_Apu& );
- Nes_Fme7_Apu& operator = ( const Nes_Fme7_Apu& );
-
- static unsigned char const amp_table [16];
-
- struct {
- Blip_Buffer* output;
- int last_amp;
- } oscs [osc_count];
- blip_time_t last_time;
-
- enum { amp_range = 192 }; // can be any value; this gives best error/quality tradeoff
- Blip_Synth<blip_good_quality,1> synth;
-
- void run_until( blip_time_t );
-};
-
-inline void Nes_Fme7_Apu::volume( double v )
-{
- synth.volume( 0.38 / amp_range * v ); // to do: fine-tune
-}
-
-inline void Nes_Fme7_Apu::treble_eq( blip_eq_t const& eq )
-{
- synth.treble_eq( eq );
-}
-
-inline void Nes_Fme7_Apu::osc_output( int i, Blip_Buffer* buf )
-{
- assert( (unsigned) i < osc_count );
- oscs [i].output = buf;
-}
-
-inline void Nes_Fme7_Apu::output( Blip_Buffer* buf )
-{
- for ( int i = 0; i < osc_count; i++ )
- osc_output( i, buf );
-}
-
-inline Nes_Fme7_Apu::Nes_Fme7_Apu()
-{
- output( NULL );
- volume( 1.0 );
- reset();
-}
-
-inline void Nes_Fme7_Apu::write_latch( int data ) { latch = data; }
-
-inline void Nes_Fme7_Apu::write_data( blip_time_t time, int data )
-{
- if ( (unsigned) latch >= reg_count )
- {
- #ifdef debug_printf
- debug_printf( "FME7 write to %02X (past end of sound registers)\n", (int) latch );
- #endif
- return;
- }
-
- run_until( time );
- regs [latch] = data;
-}
-
-inline void Nes_Fme7_Apu::end_frame( blip_time_t time )
-{
- if ( time > last_time )
- run_until( time );
-
- assert( last_time >= time );
- last_time -= time;
-}
-
-inline void Nes_Fme7_Apu::save_state( fme7_apu_state_t* out ) const
-{
- *out = *this;
-}
-
-inline void Nes_Fme7_Apu::load_state( fme7_apu_state_t const& in )
-{
- reset();
- fme7_apu_state_t* state = this;
- *state = in;
-}
-
-#endif