#ifndef __XCB_PIXEL_H__
#define __XCB_PIXEL_H__
#include <inttypes.h>
#include <X11/Xfuncproto.h>
#ifndef BUILD
#include <xcb/xcb_bitops.h>
#include <xcb/xcb_image.h>
#endif
_X_INLINE static void
xcb_image_put_pixel_XY32M (xcb_image_t *image,
uint32_t x,
uint32_t y,
int pixel)
{
uint32_t unit = (x >> 3) & ~xcb_mask(2);
uint32_t byte = xcb_mask(2) - ((x >> 3) & xcb_mask(2));
uint32_t bit = xcb_mask(3) - (x & xcb_mask(3));
uint8_t m = 1 << bit;
uint8_t p = pixel << bit;
uint8_t * bp = image->data + (y * image->stride) + (unit | byte);
*bp = (*bp & ~m) | p;
}
_X_INLINE static void
xcb_image_put_pixel_XY32L (xcb_image_t *image,
uint32_t x,
uint32_t y,
int pixel)
{
uint32_t bit = x & xcb_mask(3);
uint8_t m = 1 << bit;
uint8_t p = pixel << bit;
uint8_t * bp = image->data + (y * image->stride) + (x >> 3);
*bp = (*bp & ~m) | p;
}
_X_INLINE static int
xcb_image_get_pixel_XY32M (xcb_image_t *image,
uint32_t x,
uint32_t y)
{
uint32_t unit = (x >> 3) & ~xcb_mask(2);
uint32_t byte = xcb_mask(2) - ((x >> 3) & xcb_mask(2));
uint32_t bit = xcb_mask(3) - (x & xcb_mask(3));
uint8_t * bp = image->data + (y * image->stride) + (unit | byte);
return (*bp >> bit) & 1;
}
_X_INLINE static int
xcb_image_get_pixel_XY32L (xcb_image_t *image,
uint32_t x,
uint32_t y)
{
uint32_t bit = x & xcb_mask(3);
uint8_t * bp = image->data + (y * image->stride) + (x >> 3);
return (*bp >> bit) & 1;
}
_X_INLINE static void
xcb_image_put_pixel_Z8 (xcb_image_t *image,
uint32_t x,
uint32_t y,
uint8_t pixel)
{
image->data[x + y * image->stride] = pixel;
}
_X_INLINE static uint8_t
xcb_image_get_pixel_Z8 (xcb_image_t *image,
uint32_t x,
uint32_t y)
{
return image->data[x + y * image->stride];
}
_X_INLINE static void
xcb_image_put_pixel_Z32M (xcb_image_t *image,
uint32_t x,
uint32_t y,
uint32_t pixel)
{
uint8_t * row = image->data + (y * image->stride);
row[x << 2] = pixel >> 24;
row[(x << 2) + 1] = pixel >> 16;
row[(x << 2) + 2] = pixel >> 8;
row[(x << 2) + 3] = pixel;
}
_X_INLINE static void
xcb_image_put_pixel_Z32L (xcb_image_t *image,
uint32_t x,
uint32_t y,
uint32_t pixel)
{
uint8_t * row = image->data + (y * image->stride);
row[x << 2] = pixel;
row[(x << 2) + 1] = pixel >> 8;
row[(x << 2) + 2] = pixel >> 16;
row[(x << 2) + 3] = pixel >> 24;
}
_X_INLINE static uint32_t
xcb_image_get_pixel_Z32M (xcb_image_t *image,
uint32_t x,
uint32_t y)
{
uint8_t * row = image->data + (y * image->stride);
uint32_t pixel = row[x << 2] << 24;
pixel |= row[(x << 2) + 1] << 16;
pixel |= row[(x << 2) + 2] << 8;
return pixel | row[(x << 2) + 3];
}
_X_INLINE static uint32_t
xcb_image_get_pixel_Z32L (xcb_image_t *image,
uint32_t x,
uint32_t y)
{
uint8_t * row = image->data + (y * image->stride);
uint32_t pixel = row[x << 2];
pixel |= row[(x << 2) + 1] << 8;
pixel |= row[(x << 2) + 2] << 16;
return pixel | row[(x << 2) + 3] << 24;
}
#endif