mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-02 00:43:43 +00:00
90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
// Multi-channel effects buffer with panning, echo and reverb
|
|
|
|
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
|
|
#ifndef EFFECTS_BUFFER_H
|
|
#define EFFECTS_BUFFER_H
|
|
|
|
#include "Multi_Buffer.h"
|
|
|
|
#include <vector>
|
|
|
|
// Effects_Buffer uses several buffers and outputs stereo sample pairs.
|
|
class Effects_Buffer : public Multi_Buffer {
|
|
public:
|
|
// nVoices indicates the number of voices for which buffers will be allocated
|
|
// to make Effects_Buffer work as "mix everything to one", nVoices will be 1
|
|
// If center_only is true, only center buffers are created and
|
|
// less memory is used.
|
|
Effects_Buffer( int nVoices = 1, bool center_only = false );
|
|
|
|
// Channel Effect Center Pan
|
|
// ---------------------------------
|
|
// 0,5 reverb pan_1
|
|
// 1,6 reverb pan_2
|
|
// 2,7 echo -
|
|
// 3 echo -
|
|
// 4 echo -
|
|
|
|
// Channel configuration
|
|
struct config_t {
|
|
double pan_1; // -1.0 = left, 0.0 = center, 1.0 = right
|
|
double pan_2;
|
|
double echo_delay; // msec
|
|
double echo_level; // 0.0 to 1.0
|
|
double reverb_delay; // msec
|
|
double delay_variance; // difference between left/right delays (msec)
|
|
double reverb_level; // 0.0 to 1.0
|
|
bool effects_enabled; // if false, use optimized simple mixer
|
|
config_t();
|
|
};
|
|
|
|
// Set configuration of buffer
|
|
virtual void config( const config_t& );
|
|
void set_depth( double );
|
|
|
|
public:
|
|
~Effects_Buffer();
|
|
blargg_err_t set_sample_rate( long samples_per_sec, int msec = blip_default_length );
|
|
void clock_rate( long );
|
|
void bass_freq( int );
|
|
void clear();
|
|
channel_t channel( int, int );
|
|
void end_frame( blip_time_t );
|
|
long read_samples( blip_sample_t*, long );
|
|
long samples_avail() const;
|
|
private:
|
|
typedef long fixed_t;
|
|
int max_voices;
|
|
enum { max_buf_count = 7 };
|
|
std::vector<Blip_Buffer> bufs;
|
|
enum { chan_types_count = 3 };
|
|
std::vector<channel_t> chan_types;
|
|
config_t config_;
|
|
long stereo_remain;
|
|
long effect_remain;
|
|
int buf_count;
|
|
bool effects_enabled;
|
|
|
|
std::vector<std::vector<blip_sample_t> > reverb_buf;
|
|
std::vector<std::vector<blip_sample_t> > echo_buf;
|
|
std::vector<int> reverb_pos;
|
|
std::vector<int> echo_pos;
|
|
|
|
struct {
|
|
fixed_t pan_1_levels [2];
|
|
fixed_t pan_2_levels [2];
|
|
int echo_delay_l;
|
|
int echo_delay_r;
|
|
fixed_t echo_level;
|
|
int reverb_delay_l;
|
|
int reverb_delay_r;
|
|
fixed_t reverb_level;
|
|
} chans;
|
|
|
|
void mix_mono( blip_sample_t*, blargg_long );
|
|
void mix_stereo( blip_sample_t*, blargg_long );
|
|
void mix_enhanced( blip_sample_t*, blargg_long );
|
|
void mix_mono_enhanced( blip_sample_t*, blargg_long );
|
|
};
|
|
|
|
#endif
|