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