0
0
Fork 0
mirror of https://git.do.srb2.org/STJr/SRB2.git synced 2024-12-29 22:20:42 +00:00
SRB2/libs/gme/player/Audio_Scope.h
2014-03-15 13:11:35 -04:00

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