mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-14 16:41:13 +00:00
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
// Low-level parts of Vgm_Emu
|
|
|
|
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
|
|
#ifndef VGM_EMU_IMPL_H
|
|
#define VGM_EMU_IMPL_H
|
|
|
|
#include "Dual_Resampler.h"
|
|
#include "Classic_Emu.h"
|
|
#include "Ym2413_Emu.h"
|
|
#include "Ym2612_Emu.h"
|
|
#include "Sms_Apu.h"
|
|
|
|
template<class Emu>
|
|
class Ym_Emu : public Emu {
|
|
protected:
|
|
int last_time;
|
|
short* out;
|
|
enum { disabled_time = -1 };
|
|
public:
|
|
Ym_Emu() : last_time( disabled_time ), out( NULL ) { }
|
|
void enable( bool b ) { last_time = b ? 0 : disabled_time; }
|
|
bool enabled() const { return last_time != disabled_time; }
|
|
void begin_frame( short* p );
|
|
int run_until( int time );
|
|
};
|
|
|
|
class Vgm_Emu_Impl : public Classic_Emu, private Dual_Resampler {
|
|
public:
|
|
typedef Classic_Emu::sample_t sample_t;
|
|
protected:
|
|
enum { stereo = 2 };
|
|
|
|
typedef int vgm_time_t;
|
|
|
|
enum { fm_time_bits = 12 };
|
|
typedef int fm_time_t;
|
|
long fm_time_offset;
|
|
int fm_time_factor;
|
|
fm_time_t to_fm_time( vgm_time_t ) const;
|
|
|
|
enum { blip_time_bits = 12 };
|
|
int blip_time_factor;
|
|
blip_time_t to_blip_time( vgm_time_t ) const;
|
|
|
|
byte const* data;
|
|
byte const* loop_begin;
|
|
byte const* data_end;
|
|
void update_fm_rates( long* ym2413_rate, long* ym2612_rate ) const;
|
|
|
|
vgm_time_t vgm_time;
|
|
byte const* pos;
|
|
blip_time_t run_commands( vgm_time_t );
|
|
int play_frame( blip_time_t blip_time, int sample_count, sample_t* buf );
|
|
|
|
byte const* pcm_data;
|
|
byte const* pcm_pos;
|
|
int dac_amp;
|
|
int dac_disabled; // -1 if disabled
|
|
void write_pcm( vgm_time_t, int amp );
|
|
|
|
Ym_Emu<Ym2612_Emu> ym2612;
|
|
Ym_Emu<Ym2413_Emu> ym2413;
|
|
|
|
Blip_Buffer blip_buf;
|
|
Sms_Apu psg;
|
|
Blip_Synth<blip_med_quality,1> dac_synth;
|
|
|
|
friend class Vgm_Emu;
|
|
};
|
|
|
|
#endif
|