masker: sdl_gen.h

#ifndef __sdl_gen_h
#define __sdl_gen_h

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <SDL/SDL.h>


#define True (1)
#define False (0)

typedef char s8;
typedef unsigned char u8;
typedef short s16;
typedef unsigned short u16;
typedef int s32;
typedef unsigned int u32;
typedef long long s64;
typedef unsigned long long u64;

#define S8(n) ((s8)(n))
#define U8(n) ((u8)(n))
#define S16(n) ((s16)(n))
#define U16(n) ((u16)(n))
#define S32(n) ((s32)(n))
#define U32(n) ((u32)(n))
#define S64(n) ((s64)(n))
#define U64(n) ((u64)(n))

typedef u32 color_t;

color_t color_new( u8 r, u8 g, u8 b, u8 a );

// The 8 digital colors
#define c_black  0x000000FF
#define c_blue   0x0000FFFF
#define c_green  0x00FF00FF
#define c_cyan   0x00FFFFFF
#define c_red    0xFF0000FF
#define c_pink   0xFF00FFFF
#define c_yellow 0xFFFF00FF
#define c_white  0xFFFFFFFF

// various shades of gray
#define c_gray   0xAAAAAAFF
#define c_gray50 0x808080FF
#define c_gray25 0x404040FF

// an ugly color for transparent pixels
#define c_trans  0xFF00FEFF

size_t fsize( FILE* fp );

u32 color_to_surf( SDL_Surface* surf, color_t color );

u32 surf_to_color( SDL_Surface* surf, u32 color_sdl );

void SDL_Clear( SDL_Surface* surf, color_t color );

void SDL_Clear_rect_easy( SDL_Surface* surf, int x, int y, int w, int h, color_t color );

void SDL_PutPixel( SDL_Surface* surf, long x, long y, color_t color );

color_t SDL_GetPixel( SDL_Surface* surf, long x, long y ); // this could be broken

void SDL_Line( SDL_Surface* surf, int x1, int y1, int x2, int y2, color_t color );

void SDL_Line_Straight( SDL_Surface* surf, int x, int y, int dx, int dy, int length, color_t color );

void SDL_Circle( SDL_Surface* surf, int x, int y, int radius, color_t color );

SDL_Surface* surf_new( int w, int h );

// out=target_surface  - modify target_surface in place
// out=NULL            - return new surface
SDL_Surface* scale_surface( SDL_Surface* in, SDL_Surface* out, int new_w, int new_h );

int save_to_tga( SDL_Surface* surf, char* path );

typedef struct rgb96_t rgb96_t;
struct rgb96_t {
    u32 r;
    u32 g;
    u32 b;
};

#define RGB96_BLACK ((rgb96_t){.r=0,.g=0,.b=0})

u32 pixel_high_gray( rgb96_t c );

rgb96_t pixel_high_get( SDL_Surface* surf, long x, long y );
int     pixel_high_put( SDL_Surface* surf, long x, long y, rgb96_t c );

rgb96_t pixel_high_add( rgb96_t c1, rgb96_t c2 );
rgb96_t pixel_high_div_n( rgb96_t c1, u32 n );

//_Bool pixel_high_LT( rgb96_t c1, rgb96_t c2 );
//_Bool pixel_high_LTE( rgb96_t c1, rgb96_t c2 );
//_Bool pixel_high_GT( rgb96_t c1, rgb96_t c2 );
//_Bool pixel_high_GTE( rgb96_t c1, rgb96_t c2 );

#endif