diff options
Diffstat (limited to 'apps/codecs/libgme/sms_apu.h')
-rw-r--r-- | apps/codecs/libgme/sms_apu.h | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/apps/codecs/libgme/sms_apu.h b/apps/codecs/libgme/sms_apu.h deleted file mode 100644 index 6dd65591ce..0000000000 --- a/apps/codecs/libgme/sms_apu.h +++ /dev/null @@ -1,63 +0,0 @@ -// Sega Master System SN76489 PSG sound chip emulator - -// Sms_Snd_Emu 0.1.2 -#ifndef SMS_APU_H -#define SMS_APU_H - -#include "blargg_common.h" -#include "blip_buffer.h" - -// 0: Square 1, 1: Square 2, 2: Square 3, 3: Noise -enum { sms_osc_count = 4 }; // 0 <= chan < osc_count - -struct Osc -{ - struct Blip_Buffer* outputs [4]; // NULL, right, left, center - struct Blip_Buffer* output; - int last_amp; - - int volume; - int period; - int delay; - unsigned phase; -}; - -struct Sms_Apu { - struct Osc oscs [sms_osc_count]; - int ggstereo; - int latch; - - blip_time_t last_time; - int min_tone_period; - unsigned noise_feedback; - unsigned looped_feedback; - struct Blip_Synth synth; -}; - -// Basics - -void Sms_apu_init( struct Sms_Apu* this ); - -// Sets buffer(s) to generate sound into, or 0 to mute. If only center is not 0, -// output is mono. -void Sms_apu_set_output( struct Sms_Apu* this, int i, struct Blip_Buffer* center, struct Blip_Buffer* left, struct Blip_Buffer* right); - -// Emulates to time t, then writes data to Game Gear left/right assignment byte -void Sms_apu_write_ggstereo( struct Sms_Apu* this, blip_time_t t, int data ); - -// Emulates to time t, then writes data -void Sms_apu_write_data( struct Sms_Apu* this, blip_time_t t, int data ); - -// Emulates to time t, then subtracts t from the current time. -// OK if previous write call had time slightly after t. -void Sms_apu_end_frame( struct Sms_Apu* this, blip_time_t t ); - -// More features - -// Resets sound chip and sets noise feedback bits and width -void Sms_apu_reset( struct Sms_Apu* this, unsigned noise_feedback, int noise_width ); - -// Sets overall volume, where 1.0 is normal -void Sms_apu_volume( struct Sms_Apu* this, int vol ); - -#endif |