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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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27
apps/plugins/lib/playergfx.c
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@ -317,7 +317,7 @@ void pgfx_hline(int x1, int x2, int y)
void pgfx_vline(int x, int y1, int y2)
{
int y;
unsigned char *dst;
unsigned char *dst, *dst_end;
unsigned mask;
lcd_blockfunc_type *bfunc;
@ -344,8 +344,10 @@ void pgfx_vline(int x, int y1, int y2)
dst = &gfx_buffer[pixel_height * (x/5) + y1];
mask = 0x10 >> (x % 5);
for (y = y1; y <= y2; y++)
dst_end = dst + y2 - y1;
do
bfunc(dst++, mask, 0x1F);
while (dst <= dst_end);
}
/* Draw a rectangular box */
@ -366,8 +368,8 @@ void pgfx_drawrect(int x, int y, int width, int height)
/* Fill a rectangular area */
void pgfx_fillrect(int x, int y, int width, int height)
{
int nx, i;
unsigned char *dst;
int nx;
unsigned char *dst, *dst_end;
unsigned mask, mask_right;
lcd_blockfunc_type *bfunc;
@ -402,16 +404,20 @@ void pgfx_fillrect(int x, int y, int width, int height)
{
unsigned char *dst_col = dst;
for (i = height; i > 0; i--)
dst_end = dst_col + height;
do
bfunc(dst_col++, mask, 0x1F);
while (dst_col < dst_end);
dst += pixel_height;
mask = 0x1F;
}
mask &= mask_right;
for (i = height; i > 0; i--)
dst_end = dst + height;
do
bfunc(dst++, mask, 0x1F);
while (dst < dst_end);
}
/* About PlayerGFX internal bitmap format:
@ -429,7 +435,7 @@ void pgfx_bitmap_part(const unsigned char *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
{
int nx, shift;
unsigned char *dst;
unsigned char *dst, *dst_end;
unsigned mask, mask_right;
lcd_blockfunc_type *bfunc;
@ -465,10 +471,11 @@ void pgfx_bitmap_part(const unsigned char *src, int src_x, int src_y,
mask = 0x1F >> (x % 5);
mask_right = 0x1F0 >> (nx % 5);
for (y = 0; y < height; y++)
dst_end = dst + height;
do
{
const unsigned char *src_row = src;
unsigned char *dst_row = dst;
unsigned char *dst_row = dst++;
unsigned mask_row = mask;
unsigned data = *src_row++;
int extrabits = shift;
@ -493,8 +500,8 @@ void pgfx_bitmap_part(const unsigned char *src, int src_x, int src_y,
bfunc(dst_row, mask_row & mask_right, data >> extrabits);
src += stride;
dst++;
}
while (dst < dst_end);
}
/* Draw a full bitmap */