225 lines
11 KiB
C
225 lines
11 KiB
C
/*
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* File : blit.h
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* This file is part of RT-Thread GUI Engine
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2013-10-04 Bernard porting SDL software render to RT-Thread GUI
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*/
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef __RTGUI_BLIT_H__
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#define __RTGUI_BLIT_H__
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#include <rtgui/rtgui.h>
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#include <rtgui/dc.h>
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/* Assemble R-G-B values into a specified pixel format and store them */
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#define RGB565_FROM_RGB(Pixel, r, g, b) \
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{ \
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Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \
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}
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#define BGR565_FROM_RGB(Pixel, r, g, b) \
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{ \
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Pixel = ((b>>3)<<11)|((g>>2)<<5)|(r>>3); \
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}
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#define RGB555_FROM_RGB(Pixel, r, g, b) \
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{ \
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Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \
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}
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#define RGB888_FROM_RGB(Pixel, r, g, b) \
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{ \
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Pixel = (r<<16)|(g<<8)|b; \
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}
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#define ARGB8888_FROM_RGBA(Pixel, r, g, b, a) \
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{ \
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Pixel = (a<<24)|(r<<16)|(g<<8)|b; \
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}
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#define RGBA8888_FROM_RGBA(Pixel, r, g, b, a) \
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{ \
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Pixel = (r<<24)|(g<<16)|(b<<8)|a; \
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}
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#define ABGR8888_FROM_RGBA(Pixel, r, g, b, a) \
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{ \
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Pixel = (a<<24)|(b<<16)|(g<<8)|r; \
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}
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#define BGRA8888_FROM_RGBA(Pixel, r, g, b, a) \
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{ \
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Pixel = (b<<24)|(g<<16)|(r<<8)|a; \
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}
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#define ARGB2101010_FROM_RGBA(Pixel, r, g, b, a) \
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{ \
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r = r ? ((r << 2) | 0x3) : 0; \
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g = g ? ((g << 2) | 0x3) : 0; \
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b = b ? ((b << 2) | 0x3) : 0; \
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a = (a * 3) / 255; \
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Pixel = (a<<30)|(r<<20)|(g<<10)|b; \
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}
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/* Load pixel of the specified format from a buffer and get its R-G-B values */
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#define RGB_FROM_RGB565(Pixel, r, g, b) \
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{ \
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r = rtgui_blit_expand_byte[3][((Pixel&0xF800)>>11)]; \
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g = rtgui_blit_expand_byte[2][((Pixel&0x07E0)>>5)]; \
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b = rtgui_blit_expand_byte[3][(Pixel&0x001F)]; \
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}
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#define RGB_FROM_BGR565(Pixel, r, g, b) \
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{ \
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b = rtgui_blit_expand_byte[3][((Pixel&0xF800)>>11)]; \
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g = rtgui_blit_expand_byte[2][((Pixel&0x07E0)>>5)]; \
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r = rtgui_blit_expand_byte[3][(Pixel&0x001F)]; \
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}
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#define RGB_FROM_RGB555(Pixel, r, g, b) \
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{ \
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r = rtgui_blit_expand_byte[3][((Pixel&0x7C00)>>10)]; \
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g = rtgui_blit_expand_byte[3][((Pixel&0x03E0)>>5)]; \
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b = rtgui_blit_expand_byte[3][(Pixel&0x001F)]; \
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}
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#define RGB_FROM_RGB888(Pixel, r, g, b) \
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{ \
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r = ((Pixel&0xFF0000)>>16); \
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g = ((Pixel&0xFF00)>>8); \
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b = (Pixel&0xFF); \
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}
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#define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \
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{ \
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r = (Pixel>>24); \
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g = ((Pixel>>16)&0xFF); \
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b = ((Pixel>>8)&0xFF); \
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a = (Pixel&0xFF); \
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}
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#define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \
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{ \
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r = ((Pixel>>16)&0xFF); \
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g = ((Pixel>>8)&0xFF); \
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b = (Pixel&0xFF); \
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a = (Pixel>>24); \
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}
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#define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \
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{ \
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r = (Pixel&0xFF); \
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g = ((Pixel>>8)&0xFF); \
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b = ((Pixel>>16)&0xFF); \
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a = (Pixel>>24); \
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}
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#define RGBA_FROM_BGRA8888(Pixel, r, g, b, a) \
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{ \
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r = ((Pixel>>8)&0xFF); \
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g = ((Pixel>>16)&0xFF); \
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b = (Pixel>>24); \
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a = (Pixel&0xFF); \
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}
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#define RGBA_FROM_ARGB2101010(Pixel, r, g, b, a) \
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{ \
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r = ((Pixel>>22)&0xFF); \
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g = ((Pixel>>12)&0xFF); \
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b = ((Pixel>>2)&0xFF); \
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a = rtgui_blit_expand_byte[6][(Pixel>>30)]; \
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}
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/* 4-times unrolled loop */
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#define DUFFS_LOOP4(pixel_copy_increment, width) \
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{ int n = (width+3)/4; \
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switch (width & 3) { \
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case 0: do { pixel_copy_increment; \
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case 3: pixel_copy_increment; \
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case 2: pixel_copy_increment; \
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case 1: pixel_copy_increment; \
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} while (--n > 0); \
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} \
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}
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/* 8-times unrolled loop */
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#define DUFFS_LOOP8(pixel_copy_increment, width) \
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{ int n = (width+7)/8; \
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switch (width & 7) { \
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case 0: do { pixel_copy_increment; \
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case 7: pixel_copy_increment; \
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case 6: pixel_copy_increment; \
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case 5: pixel_copy_increment; \
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case 4: pixel_copy_increment; \
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case 3: pixel_copy_increment; \
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case 2: pixel_copy_increment; \
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case 1: pixel_copy_increment; \
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} while ( --n > 0 ); \
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} \
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}
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/* Use the 8-times version of the loop by default */
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#define DUFFS_LOOP(pixel_copy_increment, width) \
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DUFFS_LOOP8(pixel_copy_increment, width)
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struct rtgui_blit_info
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{
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rt_uint8_t *src;
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int src_w, src_h;
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int src_pitch;
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int src_skip;
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rt_uint8_t *dst;
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int dst_w, dst_h;
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int dst_pitch;
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int dst_skip;
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rt_uint8_t src_fmt;
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rt_uint8_t dst_fmt;
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rt_uint8_t r, g, b, a;
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};
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struct rtgui_image_info
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{
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rt_uint8_t *pixels;
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int src_pitch;
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rt_uint8_t src_fmt;
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rt_uint8_t a;
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};
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extern const rt_uint8_t* rtgui_blit_expand_byte[9];
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typedef void (*rtgui_blit_line_func)(rt_uint8_t *dst, rt_uint8_t *src, int line);
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rtgui_blit_line_func rtgui_blit_line_get(int dst_bpp, int src_bpp);
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rtgui_blit_line_func rtgui_blit_line_get_inv(int dst_bpp, int src_bpp);
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void rtgui_blit(struct rtgui_blit_info * info);
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void rtgui_image_info_blit(struct rtgui_image_info* image, struct rtgui_dc* dc, struct rtgui_rect *dc_rect);
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#endif
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