mirror of
https://github.com/DrBeef/Raze.git
synced 2024-12-15 23:21:21 +00:00
718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
82 lines
2 KiB
C++
82 lines
2 KiB
C++
// Sega Genesis/Mega Drive GYM music file emulator
|
|
// Includes with PCM timing recovery to improve sample quality.
|
|
|
|
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
|
|
#ifndef GYM_EMU_H
|
|
#define GYM_EMU_H
|
|
|
|
#include "Dual_Resampler.h"
|
|
#include "Ym2612_Emu.h"
|
|
#include "Music_Emu.h"
|
|
#include "Sms_Apu.h"
|
|
|
|
class Gym_Emu : public Music_Emu, private Dual_Resampler {
|
|
public:
|
|
// GYM file header
|
|
enum { header_size = 428 };
|
|
struct header_t
|
|
{
|
|
char tag [4];
|
|
char song [32];
|
|
char game [32];
|
|
char copyright [32];
|
|
char emulator [32];
|
|
char dumper [32];
|
|
char comment [256];
|
|
byte loop_start [4]; // in 1/60 seconds, 0 if not looped
|
|
byte packed [4];
|
|
};
|
|
|
|
// Header for currently loaded file
|
|
header_t const& header() const { return header_; }
|
|
|
|
static gme_type_t static_type() { return gme_gym_type; }
|
|
|
|
public:
|
|
// deprecated
|
|
using Music_Emu::load;
|
|
blargg_err_t load( header_t const& h, Data_Reader& in ) // use Remaining_Reader
|
|
{ return load_remaining_( &h, sizeof h, in ); }
|
|
enum { gym_rate = 60 };
|
|
long track_length() const; // use track_info()
|
|
|
|
public:
|
|
Gym_Emu();
|
|
~Gym_Emu();
|
|
protected:
|
|
blargg_err_t load_mem_( byte const*, long );
|
|
blargg_err_t track_info_( track_info_t*, int track ) const;
|
|
blargg_err_t set_sample_rate_( long sample_rate );
|
|
blargg_err_t start_track_( int );
|
|
blargg_err_t play_( long count, sample_t* );
|
|
void mute_voices_( int );
|
|
void set_tempo_( double );
|
|
int play_frame( blip_time_t blip_time, int sample_count, sample_t* buf );
|
|
private:
|
|
// sequence data begin, loop begin, current position, end
|
|
const byte* data;
|
|
const byte* loop_begin;
|
|
const byte* pos;
|
|
const byte* data_end;
|
|
blargg_long loop_remain; // frames remaining until loop beginning has been located
|
|
header_t header_;
|
|
double fm_sample_rate;
|
|
blargg_long clocks_per_frame;
|
|
void parse_frame();
|
|
|
|
// dac (pcm)
|
|
int dac_amp;
|
|
int prev_dac_count;
|
|
bool dac_enabled;
|
|
bool dac_muted;
|
|
void run_dac( int );
|
|
|
|
// sound
|
|
Blip_Buffer blip_buf;
|
|
Ym2612_Emu fm;
|
|
Blip_Synth<blip_med_quality,1> dac_synth;
|
|
Sms_Apu apu;
|
|
byte dac_buf [1024];
|
|
};
|
|
|
|
#endif
|