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update on blit function. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@844 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-08-11 09:48:21 +00:00
parent a385dc3940
commit 084a39897f
2 changed files with 48 additions and 88 deletions
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54
components/rtgui/common/blit.c
View File

@ -27,18 +27,16 @@ static void rtgui_blit_line_3_1(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int li
/* 4 bpp to 1 bpp */
static void rtgui_blit_line_4_1(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
{
line = line / 4;
while (line)
{
*dst_ptr = (rt_uint8_t)(((*src_ptr & 0x00E00000)>>16)|
((*(src_ptr + 1) & 0x0000E000)>>11) |
((*(src_ptr + 2) & 0x000000C0)>>6));
struct _color {rt_uint8_t r, g, b, a;} *c;
src_ptr += 4;
c = (struct _color*)src_ptr;
while (line-- > 0)
{
*dst_ptr = (c->r & 0xe0) | (c->g & 0xc0) >> 3 | (c->b & 0xe0) >> 5 ;
c ++;
dst_ptr ++;
line --;
}
return;
}
/* 1 bpp to 2 bpp */
@ -72,22 +70,20 @@ static void rtgui_blit_line_3_2(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int li
/* 4 bpp to 2 bpp */
static void rtgui_blit_line_4_2(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
{
rt_uint16_t* dst;
struct _color {rt_uint8_t r, g, b, a;} *c;
rt_uint16_t* ptr;
c = (struct _color*)src_ptr;
ptr = (rt_uint16_t*)dst_ptr;
dst = (rt_uint16_t*)dst_ptr;
line = line / 4;
while (line)
while (line-- > 0)
{
*dst = (((*(src_ptr + 1) << 8) & 0x0000F800) |
((*(src_ptr + 1) << 3) & 0x000007E0) |
((*src_ptr >> 3) & 0x0000001F));
*ptr = ((c->r & 0xf8) << 8) | ((c->g & 0xfc) << 3) | (c->b >> 3);
src_ptr += 4; /* skip alpha */
dst ++;
line --;
c ++;
ptr ++;
}
return;
}
static void rtgui_blit_line_1_3(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
@ -253,11 +249,16 @@ void rtgui_blit_line_direct(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
rt_memcpy(dst_ptr, src_ptr, line);
}
/* convert 4bpp to 3bpp */
static void rtgui_blit_line_4_3(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
{
line = line / 4;
while (line)
{
*dst_ptr++ = *src_ptr++;
*dst_ptr++ = *src_ptr++;
*dst_ptr++ = *src_ptr++;
src_ptr ++;
line --;
}
}
@ -270,9 +271,18 @@ static void rtgui_blit_line_2_4(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int li
{
}
/* convert 3bpp to 4bpp */
static void rtgui_blit_line_3_4(rt_uint8_t* dst_ptr, rt_uint8_t* src_ptr, int line)
{
line = line / 4;
while (line)
{
*dst_ptr++ = *src_ptr++;
*dst_ptr++ = *src_ptr++;
*dst_ptr++ = *src_ptr++;
*dst_ptr++ = 0;
line --;
}
}
static const rtgui_blit_line_func _blit_table[5][5] =
@ -291,8 +301,8 @@ static const rtgui_blit_line_func _blit_table[5][5] =
const rtgui_blit_line_func rtgui_blit_line_get(int dst_bpp, int src_bpp)
{
RT_ASSERT(dst_bpp>1 && dst_bpp < 5);
RT_ASSERT(src_bpp>1 && src_bpp < 5);
RT_ASSERT(dst_bpp>0 && dst_bpp < 5);
RT_ASSERT(src_bpp>0 && src_bpp < 5);
return _blit_table[dst_bpp][src_bpp];
}

68
components/rtgui/common/dc_buffer.c
View File

@ -13,6 +13,7 @@
*/
#include <rtgui/rtgui.h>
#include <rtgui/dc.h>
#include <rtgui/blit.h>
#include <rtgui/dc_hw.h>
#include <rtgui/color.h>
#include <rtgui/rtgui_system.h>
@ -207,45 +208,6 @@ static void rtgui_dc_buffer_fill_rect (struct rtgui_dc* self, struct rtgui_rect*
}
}
/* rtgui_color to RGB323 */
rt_inline void rtgui_blit_line_1(rtgui_color_t* color, rt_uint8_t* dest, int line)
{
struct _color {rt_uint8_t r, g, b, a;} *c;
c = (struct _color*)color;
while (line-- > 0)
{
*dest = (c->r & 0xe0) | (c->g & 0xc0) >> 3 | (c->b & 0xe0) >> 5 ;
c ++;
dest ++;
}
}
/* rtgui_color to RGB565 */
rt_inline void rtgui_blit_line_2(rtgui_color_t* color, rt_uint8_t* dest, int line)
{
struct _color {rt_uint8_t r, g, b, a;} *c;
rt_uint16_t* ptr;
c = (struct _color*)color;
ptr = (rt_uint16_t*)dest;
while (line-- > 0)
{
*ptr = ((c->r & 0xf8) << 8) | ((c->g & 0xfc) << 3) | (c->b >> 3);
c ++;
ptr ++;
}
}
/* rtgui_color to RGB888 */
rt_inline void rtgui_blit_line_4(rtgui_color_t* color, rt_uint8_t* dest, int line)
{
rt_memcpy(dest, color, line * 4);
}
/* blit a dc to a hardware dc */
static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_point, struct rtgui_dc* dest, rtgui_rect_t* rect)
{
@ -259,7 +221,9 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
rtgui_color_t* pixel;
rt_uint8_t *line_ptr;
rt_uint16_t rect_width, rect_height, index;
void (*blit_line)(rtgui_color_t* color, rt_uint8_t* dest, int line);
rtgui_blit_line_func blit_line;
if (rtgui_dc_get_visible(hw) == RT_FALSE) return;
/* calculate correct width and height */
if (rtgui_rect_width(*rect) > (dc->width - dc_point->x))
@ -273,23 +237,7 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
rect_height = rtgui_rect_height(*rect);
/* get blit line function */
switch (rtgui_graphic_driver_get_default()->byte_per_pixel)
{
case 1:
blit_line = rtgui_blit_line_1;
break;
case 2:
blit_line = rtgui_blit_line_2;
break;
case 4:
blit_line = rtgui_blit_line_4;
break;
default:
/* not support byte per pixel */
return;
}
blit_line = rtgui_blit_line_get(rtgui_graphic_driver_get_default()->byte_per_pixel, 4);
/* create line buffer */
line_ptr = (rt_uint8_t*) rtgui_malloc(rect_width * rtgui_graphic_driver_get_default()->byte_per_pixel);
@ -297,11 +245,14 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
/* prepare pixel line */
pixel = (rtgui_color_t*)(dc->pixel + dc_point->y * dc->pitch + dc_point->x * sizeof(rtgui_color_t));
/* calculate pitch */
rect_width = rect_width * rtgui_graphic_driver_get_default()->byte_per_pixel;
/* draw each line */
for (index = rect->y1; index < rect->y1 + rect_height; index ++)
{
/* blit on line buffer */
blit_line(pixel, line_ptr, rect_width);
blit_line(line_ptr, (rt_uint8_t*)pixel, rect_width);
pixel += dc->width;
/* draw on hardware dc */
@ -313,7 +264,6 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
}
}
static void rtgui_dc_buffer_set_gc(struct rtgui_dc* self, rtgui_gc_t *gc)
{
struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;