2 Skelton for retropc emulator
4 Author : Takeda.Toshiya
17 #define SIG_PCM1BIT_SIGNAL 0
18 #define SIG_PCM1BIT_ON 1
19 #define SIG_PCM1BIT_MUTE 2
21 class PCM1BIT : public DEVICE
24 bool signal, on, mute;
27 int positive_clocks, negative_clocks;
28 int max_vol, last_vol_l, last_vol_r;
29 int volume_l, volume_r;
32 PCM1BIT(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
34 volume_l = volume_r = 1024;
35 set_device_name(_T("1BIT PCM"));
42 void write_signal(int id, uint32_t data, uint32_t mask);
44 void mix(int32_t* buffer, int cnt);
45 void set_volume(int ch, int decibel_l, int decibel_r);
46 void save_state(FILEIO* state_fio);
47 bool load_state(FILEIO* state_fio);
49 void initialize_sound(int rate, int volume);