1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/sdl/gfx.c	Thu Oct 26 15:49:56 2017 +0300
     1.3 @@ -0,0 +1,160 @@
     1.4 +#include <stdio.h>
     1.5 +#include <SDL/SDL.h>
     1.6 +#include "gfx.h"
     1.7 +#include "image.h"
     1.8 +
     1.9 +static SDL_Surface *fbsurf;
    1.10 +static int scr_width, scr_height;
    1.11 +static int fb_width, fb_height;
    1.12 +static int num_bitplanes;
    1.13 +
    1.14 +
    1.15 +int gfx_init(int nbpl, unsigned int flags)
    1.16 +{
    1.17 +	num_bitplanes = nbpl;
    1.18 +	scr_width = fb_width = (flags & GFX_HIRES) ? 640 : 320;
    1.19 +	scr_height = fb_height = (flags & GFX_ILACE) ? 512 : 256;
    1.20 +
    1.21 +	if(SDL_Init(SDL_INIT_VIDEO) == -1) {
    1.22 +		fprintf(stderr, "failed to initialize SDL\n");
    1.23 +		return -1;
    1.24 +	}
    1.25 +	if(!(fbsurf = SDL_SetVideoMode(scr_width, scr_height, 32, SDL_SWSURFACE))) {
    1.26 +		fprintf(stderr, "failed to set video mode %dx%d\n", scr_width, scr_height);
    1.27 +		SDL_Quit();
    1.28 +		return -1;
    1.29 +	}
    1.30 +
    1.31 +	return 0;
    1.32 +}
    1.33 +
    1.34 +void gfx_shutdown(void)
    1.35 +{
    1.36 +	SDL_Quit();
    1.37 +}
    1.38 +
    1.39 +
    1.40 +int gfx_screen_width(void)
    1.41 +{
    1.42 +	return scr_width;
    1.43 +}
    1.44 +
    1.45 +int gfx_screen_height(void)
    1.46 +{
    1.47 +	return scr_height;
    1.48 +}
    1.49 +
    1.50 +
    1.51 +void *gfx_set_framebuffer(void *fb, int width, int height)
    1.52 +{
    1.53 +	return 0;
    1.54 +}
    1.55 +
    1.56 +void *gfx_get_framebuffer(void)
    1.57 +{
    1.58 +	return 0;
    1.59 +}
    1.60 +
    1.61 +
    1.62 +int get_framebuffer_width(void)
    1.63 +{
    1.64 +	return fb_width;
    1.65 +}
    1.66 +
    1.67 +int get_framebuffer_height(void)
    1.68 +{
    1.69 +	return fb_height;
    1.70 +}
    1.71 +
    1.72 +
    1.73 +void gfx_begin_copperlist(void)
    1.74 +{
    1.75 +}
    1.76 +
    1.77 +
    1.78 +int gfx_next_event(union gfx_event *ev, int block)
    1.79 +{
    1.80 +	SDL_Event sdlev;
    1.81 +
    1.82 +	if(block) {
    1.83 +		SDL_WaitEvent(&sdlev);
    1.84 +	} else {
    1.85 +		if(!SDL_PollEvent(&sdlev)) {
    1.86 +			return 0;
    1.87 +		}
    1.88 +	}
    1.89 +
    1.90 +	switch(sdlev.type) {
    1.91 +	case SDL_QUIT:
    1.92 +		ev->type = GFX_EV_QUIT;
    1.93 +		return 1;
    1.94 +
    1.95 +	case SDL_KEYDOWN:
    1.96 +	case SDL_KEYUP:
    1.97 +		ev->type = GFX_EV_KEY;
    1.98 +		ev->key.key = sdlev.key.keysym.sym;
    1.99 +		ev->key.pressed = sdlev.key.state == SDL_PRESSED;
   1.100 +		return 1;
   1.101 +
   1.102 +	default:
   1.103 +		break;
   1.104 +	}
   1.105 +	return 0;
   1.106 +}
   1.107 +
   1.108 +
   1.109 +void gfx_wait_vpos(int x)
   1.110 +{
   1.111 +}
   1.112 +
   1.113 +void gfx_wait_vblank(void)
   1.114 +{
   1.115 +}
   1.116 +
   1.117 +#define ARED(x)		((((x) & 0xf00) >> 4) | (((x) & 0xf00) >> 8))
   1.118 +#define AGREEN(x)	(((x) & 0xf0) | (((x) & 0xf0) >> 4))
   1.119 +#define ABLUE(x)	((((x) & 0xf) << 4) | ((x) & 0xf))
   1.120 +
   1.121 +void gfx_show_image(struct ham_image *img)
   1.122 +{
   1.123 +	int i, j, k;
   1.124 +	uint32_t palette[16];
   1.125 +	uint32_t *dest;
   1.126 +	unsigned char *src;
   1.127 +
   1.128 +	for(i=0; i<16; i++) {
   1.129 +		uint16_t pcol = img->palette[i];
   1.130 +		int red = ARED(pcol);
   1.131 +		int green = AGREEN(pcol);
   1.132 +		int blue = ABLUE(pcol);
   1.133 +		palette[i] = (red << fbsurf->format->Rshift) | (green << fbsurf->format->Gshift) |
   1.134 +			(blue << fbsurf->format->Bshift);
   1.135 +	}
   1.136 +
   1.137 +	if(SDL_MUSTLOCK(fbsurf)) {
   1.138 +		SDL_LockSurface(fbsurf);
   1.139 +	}
   1.140 +
   1.141 +	dest = fbsurf->pixels;
   1.142 +	src = img->pixels;
   1.143 +	for(i=0; i<img->height; i++) {
   1.144 +		for(j=0; j<img->width; j++) {
   1.145 +			unsigned char idx = 0;
   1.146 +			int bit = j & 7;
   1.147 +			for(k=0; k<img->nbitplanes; k++) {
   1.148 +				idx = (idx << 1) | ((*(src + k * img->width / 8) >> bit) & 1);
   1.149 +			}
   1.150 +			*dest++ = palette[idx];
   1.151 +			if(bit == 7) {
   1.152 +				++src;
   1.153 +			}
   1.154 +		}
   1.155 +		src += img->width / 8 * (img->nbitplanes - 1);
   1.156 +	}
   1.157 +
   1.158 +	if(SDL_MUSTLOCK(fbsurf)) {
   1.159 +		SDL_UnlockSurface(fbsurf);
   1.160 +	}
   1.161 +
   1.162 +	SDL_Flip(fbsurf);
   1.163 +}