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A couple of optimisations.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6981 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-07-02 07:21:21 +00:00
parent 876a044ae0
commit 3291ae6bfa
4 changed files with 87 additions and 44 deletions
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36
firmware/drivers/lcd-recorder.c
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@ -549,7 +549,7 @@ void lcd_drawline(int x1, int y1, int x2, int y2)
void lcd_hline(int x1, int x2, int y)
{
int x;
unsigned char *dst;
unsigned char *dst, *dst_end;
unsigned mask;
lcd_blockfunc_type *bfunc;
@ -575,8 +575,10 @@ void lcd_hline(int x1, int x2, int y)
dst = &lcd_framebuffer[y>>3][x1];
mask = 1 << (y & 7);
for (x = x1; x <= x2; x++)
dst_end = dst + x2 - x1;
do
bfunc(dst++, mask, 0xFFu);
while (dst <= dst_end);
}
/* Draw a vertical line (optimised) */
@ -639,8 +641,8 @@ void lcd_drawrect(int x, int y, int width, int height)
/* Fill a rectangular area */
void lcd_fillrect(int x, int y, int width, int height)
{
int ny, i;
unsigned char *dst;
int ny;
unsigned char *dst, *dst_end;
unsigned mask, mask_bottom;
unsigned bits = 0xFFu;
lcd_blockfunc_type *bfunc;
@ -685,8 +687,10 @@ void lcd_fillrect(int x, int y, int width, int height)
{
unsigned char *dst_row = dst;
for (i = width; i > 0; i--)
dst_end = dst_row + width;
do
bfunc(dst_row++, mask, 0xFFu);
while (dst_row < dst_end);
}
dst += LCD_WIDTH;
@ -698,8 +702,10 @@ void lcd_fillrect(int x, int y, int width, int height)
memset(dst, bits, width);
else
{
for (i = width; i > 0; i--)
dst_end = dst + width;
do
bfunc(dst++, mask, 0xFFu);
while (dst < dst_end);
}
}
@ -721,8 +727,8 @@ void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
{
int shift, ny, i;
unsigned char *dst;
int shift, ny;
unsigned char *dst, *dst_end;
unsigned mask, mask_bottom;
lcd_blockfunc_type *bfunc;
@ -772,9 +778,11 @@ void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
{
const unsigned char *src_row = src;
unsigned char *dst_row = dst;
for (i = width; i > 0; i--)
dst_end = dst_row + width;
do
bfunc(dst_row++, mask, *src_row++);
while (dst_row < dst_end);
}
src += stride;
@ -787,13 +795,16 @@ void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
memcpy(dst, src, width);
else
{
for (i = width; i > 0; i--)
dst_end = dst + width;
do
bfunc(dst++, mask, *src++);
while (dst < dst_end);
}
}
else
{
for (x = 0; x < width; x++)
dst_end = dst + width;
do
{
const unsigned char *src_col = src++;
unsigned char *dst_col = dst++;
@ -819,6 +830,7 @@ void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
data |= *src_col << shift;
bfunc(dst_col, mask_col & mask_bottom, data);
}
while (dst < dst_end);
}
}