initial work

master
Ondřej Hruška 7 years ago
parent f330f1356f
commit 9edf507423
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
  1. 100
      main.c

100
main.c

@ -0,0 +1,100 @@
#include <X11/Xlib.h>
#include <X11/X.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
typedef struct RGB_struct {
uint8_t b;
uint8_t g;
uint8_t r;
} RGB;
int main()
{
Display *display = XOpenDisplay(NULL);
Window root = DefaultRootWindow(display);
XWindowAttributes gwa;
XGetWindowAttributes(display, root, &gwa);
uint32_t width = gwa.width;
uint32_t height = gwa.height;
// The first image, to measure the screen
XImage *image = XGetImage(display, root, 0, 0, width, height, AllPlanes, ZPixmap);
uint8_t array[width * height * 3];
const uint32_t red_mask = image->red_mask;
const uint32_t green_mask = image->green_mask;
const uint32_t blue_mask = image->blue_mask;
printf("mask: %p %p %p\nbyte_order: %d\nunit: %d\nbit_order: %d\npad: %d\ndepth: %d\nBPL: %d\nbPPx: %d\n",
red_mask, green_mask, blue_mask, image->byte_order, image->bitmap_unit,
image->bitmap_bit_order, image->bitmap_pad, image->depth, image->bytes_per_line, image->bits_per_pixel);
union Color {
uint32_t hex;
RGB rgb;
struct {
uint8_t b;
uint8_t g;
uint8_t r;
};
};
const uint32_t xnum = 32;
const uint32_t ynum = 24;
const uint32_t xstep = width/xnum;
const uint32_t ystep = height/ynum;
union Color *C;
while (XGetSubImage(display, root, 0, 0, width, height, AllPlanes, ZPixmap, image, 0, 0)) {
//color.hex = XGetPixel(image, 40,40);
printf("\033[2J\033[H");
for (int i = 0; i < ynum; i++) {
printf("\n");
for (int j = 0; j < xnum; j++) {
C = ((union Color*)image->data + i*ystep*width + j*xstep);
printf("\x1b[48;2;%d;%d;%dm \x1b[m", C->r, C->g, C->b);
}
}
usleep(50000);
}
return 0;
}
#if 0
typedef struct _XImage {
int width, height; /* size of image */
int xoffset; /* number of pixels offset in X direction */
int format; /* XYBitmap, XYPixmap, ZPixmap */
char *data; /* pointer to image data */
int byte_order; /* data byte order, LSBFirst, MSBFirst */
int bitmap_unit; /* quant. of scanline 8, 16, 32 */
int bitmap_bit_order; /* LSBFirst, MSBFirst */
int bitmap_pad; /* 8, 16, 32 either XY or ZPixmap */
int depth; /* depth of image */
int bytes_per_line; /* accelerator to next scanline */
int bits_per_pixel; /* bits per pixel (ZPixmap) */
unsigned long red_mask; /* bits in z arrangement */
unsigned long green_mask;
unsigned long blue_mask;
XPointer obdata; /* hook for the object routines to hang on */
struct funcs { /* image manipulation routines */
struct _XImage *(*create_image)();
int (*destroy_image)();
unsigned long (*get_pixel)();
int (*put_pixel)();
struct _XImage *(*sub_image)();
int (*add_pixel)();
} f;
} XImage;
#endif
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