void NXGL_FUNCNAME(nxgl_copyrectangle, NXGLIB_SUFFIX)
(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *dest,
FAR const void *src, FAR const struct nxgl_point_s *origin,
unsigned int srcstride)
{
FAR const uint8_t *sline;
unsigned int ncols;
unsigned int row;
unsigned int xoffset;
#if NXGLIB_BITSPERPIXEL < 8
unsigned int remainder;
#endif
/* Get the dimensions of the rectange to fill: width in pixels,
* height in rows
*/
ncols = dest->pt2.x - dest->pt1.x + 1;
/* Set up to copy the image */
xoffset = dest->pt1.x - origin->x;
sline = (FAR const uint8_t *)src + NXGL_SCALEX(xoffset) + (dest->pt1.y - origin->y) * srcstride;
#if NXGLIB_BITSPERPIXEL < 8
remainder = NXGL_REMAINDERX(xoffset);
#endif
/* Copy the image, one row at a time */
for (row = dest->pt1.y; row <= dest->pt2.y; row++)
{
#if NXGLIB_BITSPERPIXEL < 8
/* if the source pixel is not aligned with a byte boundary, then we will
* need to copy the image data to the run buffer first.
*/
if (remainder != 0)
{
NXGL_FUNCNAME(nxgl_copyrun, NXGLIB_SUFFIX)(sline, pinfo->buffer, remainder, ncols);
(void)pinfo->putrun(row, dest->pt1.x, pinfo->buffer, ncols);
}
else
#endif
{
/* The pixel data is byte aligned. Copy the image data directly from
* the image memory.
*/
(void)pinfo->putrun(row, dest->pt1.x, sline, ncols);
}
/* Then adjust the source pointer to refer to the next line in the source
* image.
*/
sline += srcstride;
}
}
void NXGL_FUNCNAME(nxgl_fillrectangle,NXGLIB_SUFFIX)
(FAR struct fb_planeinfo_s *pinfo,
FAR const struct nxgl_rect_s *rect,
NXGL_PIXEL_T color)
{
FAR uint8_t *line;
unsigned int width;
unsigned int stride;
int rows;
#if NXGLIB_BITSPERPIXEL < 8
FAR uint8_t *dest;
uint8_t mpixel = NXGL_MULTIPIXEL(color);
uint8_t leadmask;
uint8_t tailmask;
uint8_t mask;
int lnlen;
#endif
/* Get the width of the framebuffer in bytes */
stride = pinfo->stride;
/* Get the dimensions of the rectange to fill in pixels */
width = rect->pt2.x - rect->pt1.x + 1;
rows = rect->pt2.y - rect->pt1.y + 1;
/* Get the address of the first byte in the first line to write */
line = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x);
#if NXGLIB_BITSPERPIXEL < 8
# ifdef CONFIG_NX_PACKEDMSFIRST
/* Get the mask for pixels that are ordered so that they pack from the
* MS byte down.
*/
leadmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt2.x-1)));
# else
/* Get the mask for pixels that are ordered so that they pack from the
* LS byte up.
*/
leadmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x-1)));
# endif
#endif
/* Then fill the rectangle line-by-line */
while (rows-- > 0)
{
#if NXGLIB_BITSPERPIXEL < 8
/* Handle masking of the fractional initial byte */
mask = leadmask;
dest = line;
lnlen = width;
if (lnlen > 1 && mask)
{
dest[0] = (dest[0] & ~mask) | (mpixel & mask);
mask = 0xff;
dest++;
lnlen--;
}
/* Handle masking of the fractional final byte */
mask &= tailmask;
if (lnlen > 0 && mask)
{
dest[lnlen-1] = (dest[lnlen-1] & ~mask) | (mpixel & mask);
lnlen--;
}
/* Handle all of the unmasked bytes in-between */
if (lnlen > 0)
{
NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, lnlen);
}
#else
/* Draw the entire raster line */
NXGL_MEMSET(line, (NXGL_PIXEL_T)color, width);
#endif
line += stride;
}
}
void NXGL_FUNCNAME(nxgl_copyrectangle, NXGLIB_SUFFIX)
(FAR struct fb_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *dest,
FAR const void *src, FAR const struct nxgl_point_s *origin,
unsigned int srcstride)
{
FAR const uint8_t *sline;
FAR uint8_t *dline;
unsigned int width;
unsigned int deststride;
unsigned int rows;
#if NXGLIB_BITSPERPIXEL < 8
FAR const uint8_t *sptr;
FAR uint8_t *dptr;
uint8_t leadmask;
uint8_t tailmask;
uint8_t mask;
int lnlen;
#endif
/* Get the width of the framebuffer in bytes */
deststride = pinfo->stride;
/* Get the dimensions of the rectange to fill: width in pixels,
* height in rows
*/
width = dest->pt2.x - dest->pt1.x + 1;
rows = dest->pt2.y - dest->pt1.y + 1;
#if NXGLIB_BITSPERPIXEL < 8
# ifdef CONFIG_NX_PACKEDMSFIRST
/* Get the mask for pixels that are ordered so that they pack from the
* MS byte down.
*/
leadmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(dest->pt1.x)));
tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(dest->pt2.x-1)));
# else
/* Get the mask for pixels that are ordered so that they pack from the
* LS byte up.
*/
leadmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(dest->pt1.x)));
tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(dest->pt1.x-1)));
# endif
#endif
/* Then copy the image */
sline = (FAR const uint8_t *)src + NXGL_SCALEX(dest->pt1.x - origin->x) + (dest->pt1.y - origin->y) * srcstride;
dline = pinfo->fbmem + dest->pt1.y * deststride + NXGL_SCALEX(dest->pt1.x);
while (rows--)
{
#if NXGLIB_BITSPERPIXEL < 8
/* Handle masking of the fractional initial byte */
mask = leadmask;
sptr = sline;
dptr = dline;
lnlen = width;
if (lnlen > 1 && mask)
{
dptr[0] = (dptr[0] & ~mask) | (sptr[0] & mask);
mask = 0xff;
dptr++;
sptr++;
lnlen--;
}
/* Handle masking of the fractional final byte */
mask &= tailmask;
if (lnlen > 0 && mask)
{
dptr[lnlen-1] = (dptr[lnlen-1] & ~mask) | (sptr[lnlen-1] & mask);
lnlen--;
}
/* Handle all of the unmasked bytes in-between */
if (lnlen > 0)
{
NXGL_MEMCPY(dptr, sptr, lnlen);
}
#else
/* Copy the whole line */
NXGL_MEMCPY((NXGL_PIXEL_T *)dline, (NXGL_PIXEL_T *)sline, width);
#endif
dline += deststride;
sline += srcstride;
}
}
void NXGL_FUNCNAME(nxgl_moverectangle,NXGLIB_SUFFIX)
(FAR struct fb_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect,
FAR struct nxgl_point_s *offset)
{
FAR const uint8_t *sline;
FAR uint8_t *dline;
unsigned int width;
unsigned int stride;
unsigned int rows;
#if NXGLIB_BITSPERPIXEL < 8
uint8_t leadmask;
uint8_t tailmask;
#endif
/* Get the width of the framebuffer in bytes */
stride = pinfo->stride;
/* Get the dimensions of the rectange to fill: width in pixels, height
* in rows
*/
width = rect->pt2.x - rect->pt1.x + 1;
rows = rect->pt2.y - rect->pt1.y + 1;
#if NXGLIB_BITSPERPIXEL < 8
# ifdef CONFIG_NX_PACKEDMSFIRST
/* Get the mask for pixels that are ordered so that they pack from the
* MS byte down.
*/
leadmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt2.x-1)));
# else
/* Get the mask for pixels that are ordered so that they pack from the
* LS byte up.
*/
leadmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt1.x)));
tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x-1)));
# endif
#endif
/* sline = address of the first pixel in the top row of the source in
* framebuffer memory
*/
sline = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x);
/* dline = address of the first pixel in the top row of the destination
* in framebuffer memory. We get dline by subtract the offset from the
* source position.
*/
dline = pinfo->fbmem + offset->y * stride + NXGL_SCALEX(offset->x);
/* Case 1: Is the destination position above the displayed position?
* If the destination position is less then then the src address, then the
* destination is offset to a postion below (and or to the left) of the
* source in framebuffer memory.
*/
if (offset->y < rect->pt1.y ||
(offset->y < rect->pt1.y && offset->x <= rect->pt1.x))
{
/* Yes.. Copy the rectangle from top down (i.e., adding the stride
* to move to the next, lower row) */
while (rows--)
{
/* Copy the row */
#if NXGLIB_BITSPERPIXEL < 8
nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask);
#else
NXGL_MEMCPY(dline, sline, width);
#endif
/* Point to the next source/dest row below the current one */
dline += stride;
sline += stride;
}
}
/* Case 2: No.. the destination position is above (or to the left of)
* the displayed source position
*/
else
{
/* Adjust sline and dline to point to the bottom row (+1) of the
* source and destination rectangles in framebuffer memory.
*/
unsigned int hoffset = rows * stride;
sline += hoffset;
dline += hoffset;
/* Copy the rectangle from the bottom up (i.e., subtracting stride
* to re-position to the previous, higher row)
*/
while (rows--)
{
/* Point to the next source/dest row above the current one */
dline -= stride;
sline -= stride;
/* Copy the row */
#if NXGLIB_BITSPERPIXEL < 8
nxgl_lowresmemcpy(dline, sline, width, leadmask, tailmask);
#else
NXGL_MEMCPY(dline, sline, width);
#endif
}
}
}
void NXGL_FUNCNAME(nxgl_setpixel,NXGLIB_SUFFIX)
(FAR struct fb_planeinfo_s *pinfo,
FAR const struct nxgl_point_s *pos,
NXGL_PIXEL_T color)
{
FAR uint8_t *dest;
#if NXGLIB_BITSPERPIXEL < 8
uint8_t shift;
uint8_t mask;
#else
FAR NXGL_PIXEL_T *pixel;
#endif
/* Get the address of the first byte of the pixel to write */
dest = pinfo->fbmem + pos->y * pinfo->stride + NXGL_SCALEX(pos->x);
#if NXGLIB_BITSPERPIXEL < 8
/* Shift the color into the proper position */
# ifdef CONFIG_NX_PACKEDMSFIRST
#if NXGLIB_BITSPERPIXEL == 1
shift = (7 - (pos->x & 7)); /* Shift is 0, 1, ... 7 */
mask = (1 << shift); /* Mask is 0x01, 0x02, .. 0x80 */
color <<= shift; /* Color is positioned under the mask */
#elif NXGLIB_BITSPERPIXEL == 2
shift = (6 - ((pos->x & 3) << 1)); /* Shift is 0, 2, 4, or 6 */
mask = (3 << shift); /* Mask is 0x03, 0x0c, 0x30, or 0xc0 */
color <<= shift; /* Color is positioned under the mask */
#elif NXGLIB_BITSPERPIXEL == 4
shift = (4 - ((pos->x & 1) << 2)); /* Shift is 0 or 4 */
mask = (15 << shift); /* Mask is 0x0f or 0xf0 */
color <<= shift; /* Color is positioned under the mask */
#else
# error "Unsupport pixel depth"
#endif
# else /* CONFIG_NX_PACKEDMSFIRST */
#if NXGLIB_BITSPERPIXEL == 1
shift = (pos->x & 7); /* Shift is 0, 1, ... 7 */
mask = (1 << shift); /* Mask is 0x01, 0x02, .. 0x80 */
color <<= shift; /* Color is positioned under the mask */
#elif NXGLIB_BITSPERPIXEL == 2
shift = (pos->x & 3) << 1; /* Shift is 0, 2, 4, or 6 */
mask = (3 << shift); /* Mask is 0x03, 0x0c, 0x30, or 0xc0 */
color <<= shift; /* Color is positioned under the mask */
#elif NXGLIB_BITSPERPIXEL == 4
shift = (pos->x & 1) << 2; /* Shift is 0 or 4 */
mask = (15 << shift); /* Mask is 0x0f or 0xf0 */
color <<= shift; /* Color is positioned under the mask */
#else
# error "Unsupport pixel depth"
#endif
#endif /* CONFIG_NX_PACKEDMSFIRST */
/* Handle masking of the fractional byte */
*dest = (*dest & ~mask) | (color & mask);
#else
/* Write the pixel (proper alignment assumed) */
pixel = (FAR NXGL_PIXEL_T *)dest;
*pixel = color;
#endif
}
void NXGL_FUNCNAME(nxgl_filltrapezoid,NXGLIB_SUFFIX)(
FAR struct fb_planeinfo_s *pinfo,
FAR const struct nxgl_trapezoid_s *trap,
FAR const struct nxgl_rect_s *bounds,
NXGL_PIXEL_T color)
{
unsigned int stride;
unsigned int width;
FAR uint8_t *dest;
FAR uint8_t *line;
int nrows;
b16_t x1;
b16_t x2;
nxgl_coord_t y1;
nxgl_coord_t y2;
b16_t dx1dy;
b16_t dx2dy;
#if NXGLIB_BITSPERPIXEL < 8
uint8_t mpixel = NXGL_MULTIPIXEL(color);
uint8_t mask;
int lnlen;
#endif
/* Get the width of the framebuffer in bytes */
stride = pinfo->stride;
/* Get the top run position and the number of rows to draw */
x1 = trap->top.x1;
x2 = trap->top.x2;
/* Calculate the number of rows to render */
y1 = trap->top.y;
y2 = trap->bot.y;
nrows = y2 - y1 + 1;
/* Calculate the slope of the left and right side of the trapezoid */
if (nrows > 1)
{
dx1dy = b16divi((trap->bot.x1 - x1), nrows - 1);
dx2dy = b16divi((trap->bot.x2 - x2), nrows - 1);
}
else
{
/* The trapezoid is a run! Use the average width. */
x1 = (x1 + trap->bot.x1) >> 1;
x2 = (x2 + trap->bot.x2) >> 1;
dx1dy = 0;
dx2dy = 0;
}
/* Perform vertical clipping */
if (y1 < bounds->pt1.y)
{
/* Is the entire trapezoid "above" the clipping window? */
if (y2 < bounds->pt1.y)
{
/* Yes.. then do nothing */
return;
}
/* Calculate the x values for the new top run */
int dy = bounds->pt1.y - y1;
x1 += dy * dx1dy;
x2 += dy * dx2dy;
/* Clip and re-calculate the number of rows to render */
y1 = bounds->pt1.y;
nrows = y2 - y1 + 1;
}
if (y2 > bounds->pt2.y)
{
/* Is the entire trapezoid "below" the clipping window? */
if (y1 > bounds->pt2.y)
{
/* Yes.. then do nothing */
return;
}
/* Clip and re-calculate the number of rows to render */
y2 = bounds->pt2.y;
nrows = y2 - y1 + 1;
}
/* Get the address of the first byte on the first line */
line = pinfo->fbmem + y1 * stride ;
/* Then fill the trapezoid line-by-line */
while (nrows--)
{
int ix1;
int ix2;
/* Handle the special case where the sides cross (as in an hourglass) */
if (x1 > x2)
{
b16_t tmp;
ngl_swap(x1, x2, tmp);
ngl_swap(dx1dy, dx2dy, tmp);
}
/* Convert the positions to integer */
ix1 = b16toi(x1);
ix2 = b16toi(x2);
/* Handle some corner cases where we draw nothing. Otherwise, we will
* always draw at least one pixel.
*/
if (x1 <= x2 && ix2 >= bounds->pt1.x && ix1 <= bounds->pt2.x)
{
/* Get a clipped copies of the starting and ending X positions. This
* clipped truncates "down" and gives the quantized pixel holding the
* fractional X position
*/
ix1 = ngl_clipl(ix1, bounds->pt1.x);
ix2 = ngl_clipr(ix2, bounds->pt2.x);
/* Get the run length for the clipped row */
width = ix2 - ix1 + 1;
#if NXGLIB_BITSPERPIXEL < 8
/* Handle masking of the fractional initial byte */
#ifdef CONFIG_NX_PACKEDMSFIRST
mask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(ix1));
#else
mask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(ix1)));
#endif
dest = line;
lnlen = width;
if (lnlen > 1 && mask)
{
dest[0] = (dest[0] & ~mask) | (mpixel & mask);
mask = 0xff;
dest++;
lnlen--;
}
/* Handle masking of the fractional final byte */
#ifdef CONFIG_NX_PACKEDMSFIRST
mask &= (uint8_t)(0xff << (8 - NXGL_REMAINDERX(ix2)));
#else
mask &= (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(ix2)));
#endif
if (lnlen > 0 && mask)
{
dest[lnlen-1] = (dest[lnlen-1] & ~mask) | (mpixel & mask);
lnlen--;
}
/* Handle all of the unmasked bytes in-between */
if (lnlen > 0)
{
NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, lnlen);
}
#else
/* Then draw the run from (line + ix1) to (line + ix2) */
dest = line + NXGL_SCALEX(ix1);
NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, width);
#endif
}
/* Move to the start of the next line */
line += stride;
/* Add the dx/dy value to get the run positions on the next row */
x1 += dx1dy;
x2 += dx2dy;
}
