mirror of
https://git.do.srb2.org/KartKrew/Kart-Public.git
synced 2024-12-27 12:50:44 +00:00
36 lines
778 B
C++
36 lines
778 B
C++
// Simple audio waveform scope in a window, using SDL multimedia library
|
|
|
|
#ifndef AUDIO_SCOPE_H
|
|
#define AUDIO_SCOPE_H
|
|
|
|
#include "SDL.h"
|
|
|
|
class Audio_Scope {
|
|
public:
|
|
typedef const char* error_t;
|
|
|
|
// Initialize scope window of specified size. Height must be 256 or less.
|
|
error_t init( int width, int height );
|
|
|
|
// Draw at most 'count' samples from 'in', skipping 'step' samples after
|
|
// each sample drawn. Step can be less than 1.0.
|
|
error_t draw( const short* in, long count, double step = 1.0 );
|
|
|
|
Audio_Scope();
|
|
~Audio_Scope();
|
|
|
|
private:
|
|
typedef unsigned char byte;
|
|
SDL_Surface* screen;
|
|
SDL_Surface* surface;
|
|
byte* buf;
|
|
int buf_size;
|
|
int sample_shift;
|
|
int low_y;
|
|
int high_y;
|
|
int v_offset;
|
|
|
|
void render( short const* in, long count, long step );
|
|
};
|
|
|
|
#endif
|