1130 lines
32 KiB
C
1130 lines
32 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Dave Chapman
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* Copyright (C) 2009 by Karl Kurbjun
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*
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* Rockbox driver for 16-bit colour LCDs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include "config.h"
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#include "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "thread.h"
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#include <stdlib.h>
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#include "string-extra.h" /* mem*() */
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "rbunicode.h"
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#include "bidi.h"
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#include "scroll_engine.h"
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#define ROW_INC LCD_WIDTH
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#define COL_INC 1
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extern lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_backdrop[];
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extern lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_bgcolor[];
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static void ICODE_ATTR lcd_alpha_bitmap_part_mix(const fb_data* image,
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const unsigned char *src, int src_x,
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int src_y, int x, int y,
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int width, int height,
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int stride_image, int stride_src);
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#include "lcd-color-common.c"
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#include "lcd-bitmap-common.c"
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/* Clear the current viewport */
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void lcd_clear_viewport(void)
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{
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fb_data *dst, *dst_end;
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int x, y, width, height;
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int len, step;
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x = current_vp->x;
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y = current_vp->y;
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width = current_vp->width;
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height = current_vp->height;
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#if defined(HAVE_VIEWPORT_CLIP)
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/********************* Viewport on screen clipping ********************/
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/* nothing to draw? */
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if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clip image in viewport in screen */
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if (x < 0)
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{
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width += x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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y = 0;
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}
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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#endif
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len = STRIDE_MAIN(width, height);
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step = STRIDE_MAIN(ROW_INC, COL_INC);
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dst = FBADDR(x, y);
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dst_end = FBADDR(x + width - 1 , y + height - 1);
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if (current_vp->drawmode & DRMODE_INVERSEVID)
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{
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fb_data px = FB_SCALARPACK(current_vp->fg_pattern);
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do
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{
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fb_data *end = dst + len;
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do {
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*dst++ = px;
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} while (dst < end);
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dst += step - len;
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}
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while (dst <= dst_end);
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}
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else
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{
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if (!lcd_backdrop)
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{
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fb_data px = FB_SCALARPACK(current_vp->bg_pattern);
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do
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{
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fb_data *end = dst + len;
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do {
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*dst++ = px;
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} while (dst < end);
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dst += step - len;
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}
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while (dst <= dst_end);
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}
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else
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{
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do
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{
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memcpy(dst, (void *)((long)dst + lcd_backdrop_offset),
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len * sizeof(fb_data));
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dst += step;
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}
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while (dst <= dst_end);
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}
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}
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if (current_vp == &default_vp)
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lcd_scroll_stop();
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else
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lcd_scroll_stop_viewport(current_vp);
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}
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/*** low-level drawing functions ***/
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static void ICODE_ATTR setpixel(fb_data *address)
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{
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*address = FB_SCALARPACK(current_vp->fg_pattern);
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}
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static void ICODE_ATTR clearpixel(fb_data *address)
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{
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*address = FB_SCALARPACK(current_vp->bg_pattern);
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}
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static void ICODE_ATTR clearimgpixel(fb_data *address)
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{
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*address = *(fb_data *)((long)address + lcd_backdrop_offset);
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}
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static void ICODE_ATTR flippixel(fb_data *address)
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{
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unsigned px = FB_UNPACK_SCALAR_LCD(*address);
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*address = FB_SCALARPACK(~px);
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}
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static void ICODE_ATTR nopixel(fb_data *address)
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{
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(void)address;
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}
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lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_bgcolor[8] = {
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flippixel, nopixel, setpixel, setpixel,
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nopixel, clearpixel, nopixel, clearpixel
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};
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lcd_fastpixelfunc_type* const lcd_fastpixelfuncs_backdrop[8] = {
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flippixel, nopixel, setpixel, setpixel,
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nopixel, clearimgpixel, nopixel, clearimgpixel
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};
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lcd_fastpixelfunc_type* const * lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor;
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/* Fill a rectangular area */
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void lcd_fillrect(int x, int y, int width, int height)
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{
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enum fill_opt fillopt = OPT_NONE;
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fb_data *dst, *dst_end;
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int len, step;
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fb_data bits;
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memset(&bits, 0, sizeof(fb_data));
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/******************** In viewport clipping **********************/
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
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(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
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return;
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if (x < 0)
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{
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width += x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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y = 0;
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}
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if (x + width > current_vp->width)
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width = current_vp->width - x;
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if (y + height > current_vp->height)
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height = current_vp->height - y;
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/* adjust for viewport */
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x += current_vp->x;
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y += current_vp->y;
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#if defined(HAVE_VIEWPORT_CLIP)
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/********************* Viewport on screen clipping ********************/
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/* nothing to draw? */
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if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clip image in viewport in screen */
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if (x < 0)
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{
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width += x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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y = 0;
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}
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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#endif
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/* drawmode and optimisation */
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if (current_vp->drawmode & DRMODE_INVERSEVID)
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{
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if (current_vp->drawmode & DRMODE_BG)
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{
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if (!lcd_backdrop)
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{
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fillopt = OPT_SET;
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bits = FB_SCALARPACK(current_vp->bg_pattern);
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}
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else
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fillopt = OPT_COPY;
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}
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}
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else
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{
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if (current_vp->drawmode & DRMODE_FG)
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{
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fillopt = OPT_SET;
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bits = FB_SCALARPACK(current_vp->fg_pattern);
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}
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}
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if (fillopt == OPT_NONE && current_vp->drawmode != DRMODE_COMPLEMENT)
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return;
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dst = FBADDR(x, y);
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dst_end = FBADDR(x + width - 1, y + height - 1);
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len = STRIDE_MAIN(width, height);
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step = STRIDE_MAIN(ROW_INC, COL_INC);
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do
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{
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switch (fillopt)
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{
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case OPT_SET:
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{
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fb_data *start = dst;
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fb_data *end = start + len;
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do {
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*start = bits;
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} while (++start < end);
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break;
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}
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case OPT_COPY:
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memcpy(dst, (void *)((long)dst + lcd_backdrop_offset),
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len * sizeof(fb_data));
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break;
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case OPT_NONE: /* DRMODE_COMPLEMENT */
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{
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fb_data *start = dst;
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fb_data *end = start + len;
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do {
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flippixel(start);
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} while (++start < end);
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break;
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}
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}
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dst += step;
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}
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while (dst <= dst_end);
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}
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/* About Rockbox' internal monochrome bitmap format:
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*
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* A bitmap contains one bit for every pixel that defines if that pixel is
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* black (1) or white (0). Bits within a byte are arranged vertically, LSB
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* at top.
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* The bytes are stored in row-major order, with byte 0 being top left,
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* byte 1 2nd from left etc. The first row of bytes defines pixel rows
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* 0..7, the second row defines pixel row 8..15 etc.
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*
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* This is the mono bitmap format used on all other targets so far; the
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* pixel packing doesn't really matter on a 8bit+ target. */
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/* Draw a partial monochrome bitmap */
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void ICODE_ATTR lcd_mono_bitmap_part(const unsigned char *src, int src_x,
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int src_y, int stride, int x, int y,
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int width, int height)
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{
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const unsigned char *src_end;
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fb_data *dst, *dst_col;
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unsigned dmask = 0x100; /* bit 8 == sentinel */
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int drmode = current_vp->drawmode;
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int row;
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/******************** Image in viewport clipping **********************/
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
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(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
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return;
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if (x < 0)
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{
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width += x;
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src_x -= x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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src_y -= y;
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y = 0;
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}
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if (x + width > current_vp->width)
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width = current_vp->width - x;
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if (y + height > current_vp->height)
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height = current_vp->height - y;
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/* adjust for viewport */
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x += current_vp->x;
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y += current_vp->y;
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#if defined(HAVE_VIEWPORT_CLIP)
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/********************* Viewport on screen clipping ********************/
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/* nothing to draw? */
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if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clip image in viewport in screen */
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if (x < 0)
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{
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width += x;
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src_x -= x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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src_y -= y;
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y = 0;
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}
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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#endif
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src += stride * (src_y >> 3) + src_x; /* move starting point */
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src_y &= 7;
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src_end = src + width;
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dst_col = FBADDR(x, y);
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if (drmode & DRMODE_INVERSEVID)
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{
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dmask = 0x1ff; /* bit 8 == sentinel */
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drmode &= DRMODE_SOLID; /* mask out inversevid */
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}
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/* Use extra bit to avoid if () in the switch-cases below */
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if ((drmode & DRMODE_BG) && lcd_backdrop)
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drmode |= DRMODE_INT_BD;
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/* go through each column and update each pixel */
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do
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{
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const unsigned char *src_col = src++;
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unsigned data = (*src_col ^ dmask) >> src_y;
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fb_data fg, bg;
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uintptr_t bo;
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dst = dst_col;
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dst_col += COL_INC;
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row = height;
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#define UPDATE_SRC do { \
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data >>= 1; \
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if (data == 0x001) { \
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src_col += stride; \
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data = *src_col ^ dmask; \
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} \
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} while (0)
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switch (drmode)
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{
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case DRMODE_COMPLEMENT:
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do
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{
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if (data & 0x01)
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flippixel(dst);
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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case DRMODE_BG|DRMODE_INT_BD:
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bo = lcd_backdrop_offset;
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do
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{
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if (!(data & 0x01))
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*dst = *(fb_data *)((long)dst + bo);
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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case DRMODE_BG:
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bg = FB_SCALARPACK(current_vp->bg_pattern);
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do
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{
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if (!(data & 0x01))
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*dst = bg;
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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case DRMODE_FG:
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fg = FB_SCALARPACK(current_vp->fg_pattern);
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do
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{
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if (data & 0x01)
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*dst = fg;
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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case DRMODE_SOLID|DRMODE_INT_BD:
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fg = FB_SCALARPACK(current_vp->fg_pattern);
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bo = lcd_backdrop_offset;
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do
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{
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*dst = (data & 0x01) ? fg
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: *(fb_data *)((long)dst + bo);
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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case DRMODE_SOLID:
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fg = FB_SCALARPACK(current_vp->fg_pattern);
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bg = FB_SCALARPACK(current_vp->bg_pattern);
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do
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{
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*dst = (data & 0x01) ? fg : bg;
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dst += ROW_INC;
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UPDATE_SRC;
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}
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while (--row);
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break;
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}
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}
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while (src < src_end);
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}
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/* Draw a full monochrome bitmap */
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void lcd_mono_bitmap(const unsigned char *src, int x, int y, int width, int height)
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{
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lcd_mono_bitmap_part(src, 0, 0, width, x, y, width, height);
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}
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|
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/* About Rockbox' internal alpha channel format (for ALPHA_COLOR_FONT_DEPTH == 2)
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*
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* For each pixel, 4bit of alpha information is stored in a byte-stream,
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* so two pixels are packed into one byte.
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* The lower nibble is the first pixel, the upper one the second. The stride is
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* horizontal. E.g row0: pixel0: byte0[0:3], pixel1: byte0[4:7], pixel2: byte1[0:3],...
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* The format is independant of the internal display orientation and color
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* representation, as to support the same font files on all displays.
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* The values go linear from 0 (fully opaque) to 15 (fully transparent)
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* (note how this is the opposite of the alpha channel in the ARGB format).
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*
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* This might suggest that rows need to have an even number of pixels.
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* However this is generally not the case. lcd_alpha_bitmap_part_mix() can deal
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* with uneven colums (i.e. two rows can share one byte). And font files do
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* exploit this.
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* However, this is difficult to do for image files, especially bottom-up bitmaps,
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* so lcd_bmp() do expect even rows.
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*/
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|
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#define ALPHA_COLOR_FONT_DEPTH 2
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#define ALPHA_COLOR_LOOKUP_SHIFT (1 << ALPHA_COLOR_FONT_DEPTH)
|
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#define ALPHA_COLOR_LOOKUP_SIZE ((1 << ALPHA_COLOR_LOOKUP_SHIFT) - 1)
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#define ALPHA_COLOR_PIXEL_PER_BYTE (8 >> ALPHA_COLOR_FONT_DEPTH)
|
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#define ALPHA_COLOR_PIXEL_PER_WORD (32 >> ALPHA_COLOR_FONT_DEPTH)
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|
|
/* This is based on SDL (src/video/SDL_RLEaccel.c) ALPHA_BLIT32_888() macro */
|
|
static inline fb_data blend_two_colors(unsigned c1, unsigned c2, unsigned a)
|
|
{
|
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unsigned s = c1;
|
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unsigned d = c2;
|
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unsigned s1 = s & 0xff00ff;
|
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unsigned d1 = d & 0xff00ff;
|
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a += a >> (ALPHA_COLOR_LOOKUP_SHIFT - 1);
|
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d1 = (d1 + ((s1 - d1) * a >> ALPHA_COLOR_LOOKUP_SHIFT)) & 0xff00ff;
|
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s &= 0xff00;
|
|
d &= 0xff00;
|
|
d = (d + ((s - d) * a >> ALPHA_COLOR_LOOKUP_SHIFT)) & 0xff00;
|
|
|
|
return FB_SCALARPACK(d1 | d);
|
|
}
|
|
|
|
/* Blend an image with an alpha channel
|
|
* if image is NULL, drawing will happen according to the drawmode
|
|
* src is the alpha channel (4bit per pixel) */
|
|
static void ICODE_ATTR lcd_alpha_bitmap_part_mix(const fb_data* image,
|
|
const unsigned char *src, int src_x,
|
|
int src_y, int x, int y,
|
|
int width, int height,
|
|
int stride_image, int stride_src)
|
|
{
|
|
fb_data *dst, *dst_row;
|
|
unsigned dmask = 0x00000000;
|
|
int drmode = current_vp->drawmode;
|
|
/* nothing to draw? */
|
|
if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
|
|
(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
if (x + width > current_vp->width)
|
|
width = current_vp->width - x;
|
|
if (y + height > current_vp->height)
|
|
height = current_vp->height - y;
|
|
|
|
/* adjust for viewport */
|
|
x += current_vp->x;
|
|
y += current_vp->y;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
|
|| (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clip image in viewport in screen */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
if (x + width > LCD_WIDTH)
|
|
width = LCD_WIDTH - x;
|
|
if (y + height > LCD_HEIGHT)
|
|
height = LCD_HEIGHT - y;
|
|
#endif
|
|
|
|
/* the following drawmode combinations are possible:
|
|
* 1) COMPLEMENT: just negates the framebuffer contents
|
|
* 2) BG and BG+backdrop: draws _only_ background pixels with either
|
|
* the background color or the backdrop (if any). The backdrop
|
|
* is an image in native lcd format
|
|
* 3) FG and FG+image: draws _only_ foreground pixels with either
|
|
* the foreground color or an image buffer. The image is in
|
|
* native lcd format
|
|
* 4) SOLID, SOLID+backdrop, SOLID+image, SOLID+backdrop+image, i.e. all
|
|
* possible combinations of 2) and 3). Draws both, fore- and background,
|
|
* pixels. The rules of 2) and 3) apply.
|
|
*
|
|
* INVERSEVID swaps fore- and background pixels, i.e. background pixels
|
|
* become foreground ones and vice versa.
|
|
*/
|
|
if (drmode & DRMODE_INVERSEVID)
|
|
{
|
|
dmask = 0xffffffff;
|
|
drmode &= DRMODE_SOLID; /* mask out inversevid */
|
|
}
|
|
|
|
/* Use extra bits to avoid if () in the switch-cases below */
|
|
if (image != NULL)
|
|
drmode |= DRMODE_INT_IMG;
|
|
|
|
if ((drmode & DRMODE_BG) && lcd_backdrop)
|
|
drmode |= DRMODE_INT_BD;
|
|
|
|
dst_row = FBADDR(x, y);
|
|
|
|
int col, row = height;
|
|
unsigned data, pixels;
|
|
unsigned skip_end = (stride_src - width);
|
|
unsigned skip_start = src_y * stride_src + src_x;
|
|
unsigned skip_start_image = STRIDE_MAIN(src_y * stride_image + src_x,
|
|
src_x * stride_image + src_y);
|
|
|
|
#ifdef ALPHA_BITMAP_READ_WORDS
|
|
uint32_t *src_w = (uint32_t *)((uintptr_t)src & ~3);
|
|
skip_start += ALPHA_COLOR_PIXEL_PER_BYTE * ((uintptr_t)src & 3);
|
|
src_w += skip_start / ALPHA_COLOR_PIXEL_PER_WORD;
|
|
data = letoh32(*src_w++) ^ dmask;
|
|
pixels = skip_start % ALPHA_COLOR_PIXEL_PER_WORD;
|
|
#else
|
|
src += skip_start / ALPHA_COLOR_PIXEL_PER_BYTE;
|
|
data = *src ^ dmask;
|
|
pixels = skip_start % ALPHA_COLOR_PIXEL_PER_BYTE;
|
|
#endif
|
|
data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT;
|
|
#ifdef ALPHA_BITMAP_READ_WORDS
|
|
pixels = 8 - pixels;
|
|
#endif
|
|
|
|
/* image is only accessed in DRMODE_INT_IMG cases, i.e. when non-NULL.
|
|
* Therefore NULL accesses are impossible and we can increment
|
|
* unconditionally (applies for stride at the end of the loop as well) */
|
|
image += skip_start_image;
|
|
/* go through the rows and update each pixel */
|
|
do
|
|
{
|
|
/* saving current_vp->fg/bg_pattern and lcd_backdrop_offset into these
|
|
* temp vars just before the loop helps gcc to opimize the loop better
|
|
* (testing showed ~15% speedup) */
|
|
unsigned fg, bg;
|
|
ptrdiff_t bo, img_offset;
|
|
col = width;
|
|
dst = dst_row;
|
|
dst_row += ROW_INC;
|
|
#ifdef ALPHA_BITMAP_READ_WORDS
|
|
#define UPDATE_SRC_ALPHA do { \
|
|
if (--pixels) \
|
|
data >>= ALPHA_COLOR_LOOKUP_SHIFT; \
|
|
else \
|
|
{ \
|
|
data = letoh32(*src_w++) ^ dmask; \
|
|
pixels = ALPHA_COLOR_PIXEL_PER_WORD; \
|
|
} \
|
|
} while (0)
|
|
#elif ALPHA_COLOR_PIXEL_PER_BYTE == 2
|
|
#define UPDATE_SRC_ALPHA do { \
|
|
if (pixels ^= 1) \
|
|
data >>= ALPHA_COLOR_LOOKUP_SHIFT; \
|
|
else \
|
|
data = *(++src) ^ dmask; \
|
|
} while (0)
|
|
#else
|
|
#define UPDATE_SRC_ALPHA do { \
|
|
if (pixels = (++pixels % ALPHA_COLOR_PIXEL_PER_BYTE)) \
|
|
data >>= ALPHA_COLOR_LOOKUP_SHIFT; \
|
|
else \
|
|
data = *(++src) ^ dmask; \
|
|
} while (0)
|
|
#endif
|
|
|
|
switch (drmode)
|
|
{
|
|
case DRMODE_COMPLEMENT:
|
|
do
|
|
{
|
|
unsigned px = FB_UNPACK_SCALAR_LCD(*dst);
|
|
*dst = blend_two_colors(px, ~px,
|
|
data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_BG|DRMODE_INT_BD:
|
|
bo = lcd_backdrop_offset;
|
|
do
|
|
{
|
|
unsigned px = FB_UNPACK_SCALAR_LCD(*dst);
|
|
unsigned c = FB_UNPACK_SCALAR_LCD(*(fb_data *)((uintptr_t)dst + bo));
|
|
*dst = blend_two_colors(c, px, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
image += STRIDE_MAIN(1, stride_image);
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_BG:
|
|
bg = current_vp->bg_pattern;
|
|
do
|
|
{
|
|
unsigned px = FB_UNPACK_SCALAR_LCD(*dst);
|
|
*dst = blend_two_colors(bg, px, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_FG|DRMODE_INT_IMG:
|
|
img_offset = image - dst;
|
|
do
|
|
{
|
|
unsigned px1 = FB_UNPACK_SCALAR_LCD(*dst);
|
|
unsigned px2 = FB_UNPACK_SCALAR_LCD(*(dst + img_offset));
|
|
*dst = blend_two_colors(px1, px2, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_FG:
|
|
fg = current_vp->fg_pattern;
|
|
do
|
|
{
|
|
unsigned px = FB_UNPACK_SCALAR_LCD(*dst);
|
|
*dst = blend_two_colors(px, fg, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_SOLID|DRMODE_INT_BD:
|
|
bo = lcd_backdrop_offset;
|
|
fg = current_vp->fg_pattern;
|
|
do
|
|
{
|
|
unsigned c = FB_UNPACK_SCALAR_LCD(*(fb_data *)((uintptr_t)dst + bo));
|
|
*dst = blend_two_colors(c, fg, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_SOLID|DRMODE_INT_IMG:
|
|
bg = current_vp->bg_pattern;
|
|
img_offset = image - dst;
|
|
do
|
|
{
|
|
unsigned c = FB_UNPACK_SCALAR_LCD(*(dst + img_offset));
|
|
*dst = blend_two_colors(bg, c, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_SOLID|DRMODE_INT_BD|DRMODE_INT_IMG:
|
|
bo = lcd_backdrop_offset;
|
|
img_offset = image - dst;
|
|
do
|
|
{
|
|
unsigned px = FB_UNPACK_SCALAR_LCD(*(fb_data *)((uintptr_t)dst + bo));
|
|
unsigned c = FB_UNPACK_SCALAR_LCD(*(dst + img_offset));
|
|
*dst = blend_two_colors(px, c, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_SOLID:
|
|
bg = current_vp->bg_pattern;
|
|
fg = current_vp->fg_pattern;
|
|
do
|
|
{
|
|
*dst = blend_two_colors(bg, fg, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
}
|
|
#ifdef ALPHA_BITMAP_READ_WORDS
|
|
if (skip_end < pixels)
|
|
{
|
|
pixels -= skip_end;
|
|
data >>= skip_end * ALPHA_COLOR_LOOKUP_SHIFT;
|
|
} else {
|
|
pixels = skip_end - pixels;
|
|
src_w += pixels / ALPHA_COLOR_PIXEL_PER_WORD;
|
|
pixels %= ALPHA_COLOR_PIXEL_PER_WORD;
|
|
data = letoh32(*src_w++) ^ dmask;
|
|
data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT;
|
|
pixels = 8 - pixels;
|
|
}
|
|
#else
|
|
if (skip_end)
|
|
{
|
|
pixels += skip_end;
|
|
if (pixels >= ALPHA_COLOR_PIXEL_PER_BYTE)
|
|
{
|
|
src += pixels / ALPHA_COLOR_PIXEL_PER_BYTE;
|
|
pixels %= ALPHA_COLOR_PIXEL_PER_BYTE;
|
|
data = *src ^ dmask;
|
|
data >>= pixels * ALPHA_COLOR_LOOKUP_SHIFT;
|
|
} else
|
|
data >>= skip_end * ALPHA_COLOR_LOOKUP_SHIFT;
|
|
}
|
|
#endif
|
|
|
|
image += STRIDE_MAIN(stride_image,1);
|
|
} while (--row);
|
|
}
|
|
|
|
/*** drawing functions ***/
|
|
|
|
/* Draw a horizontal line (optimised) */
|
|
void lcd_hline(int x1, int x2, int y)
|
|
{
|
|
int x, width;
|
|
fb_data *dst, *dst_end;
|
|
lcd_fastpixelfunc_type *pfunc = lcd_fastpixelfuncs[current_vp->drawmode];
|
|
|
|
/* direction flip */
|
|
if (x2 < x1)
|
|
{
|
|
x = x1;
|
|
x1 = x2;
|
|
x2 = x;
|
|
}
|
|
|
|
/******************** In viewport clipping **********************/
|
|
/* nothing to draw? */
|
|
if (((unsigned)y >= (unsigned)current_vp->height) ||
|
|
(x1 >= current_vp->width) ||
|
|
(x2 < 0))
|
|
return;
|
|
|
|
if (x1 < 0)
|
|
x1 = 0;
|
|
if (x2 >= current_vp->width)
|
|
x2 = current_vp->width-1;
|
|
|
|
/* Adjust x1 and y to viewport */
|
|
x1 += current_vp->x;
|
|
x2 += current_vp->x;
|
|
y += current_vp->y;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if (((unsigned)y >= (unsigned) LCD_HEIGHT) || (x1 >= LCD_WIDTH)
|
|
|| (x2 < 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (x1 < 0)
|
|
x1 = 0;
|
|
if (x2 >= LCD_WIDTH)
|
|
x2 = LCD_WIDTH-1;
|
|
#endif
|
|
|
|
width = x2 - x1 + 1;
|
|
|
|
dst = FBADDR(x1 , y);
|
|
dst_end = dst + width;
|
|
do
|
|
{
|
|
pfunc(dst);
|
|
}
|
|
while (++dst < dst_end);
|
|
}
|
|
|
|
/* Draw a vertical line (optimised) */
|
|
void lcd_vline(int x, int y1, int y2)
|
|
{
|
|
int y;
|
|
fb_data *dst, *dst_end;
|
|
lcd_fastpixelfunc_type *pfunc = lcd_fastpixelfuncs[current_vp->drawmode];
|
|
|
|
/* direction flip */
|
|
if (y2 < y1)
|
|
{
|
|
y = y1;
|
|
y1 = y2;
|
|
y2 = y;
|
|
}
|
|
|
|
/******************** In viewport clipping **********************/
|
|
/* nothing to draw? */
|
|
if (((unsigned)x >= (unsigned)current_vp->width) ||
|
|
(y1 >= current_vp->height) ||
|
|
(y2 < 0))
|
|
return;
|
|
|
|
if (y1 < 0)
|
|
y1 = 0;
|
|
if (y2 >= current_vp->height)
|
|
y2 = current_vp->height-1;
|
|
|
|
/* adjust for viewport */
|
|
x += current_vp->x;
|
|
y1 += current_vp->y;
|
|
y2 += current_vp->y;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if (( (unsigned) x >= (unsigned)LCD_WIDTH) || (y1 >= LCD_HEIGHT)
|
|
|| (y2 < 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (y1 < 0)
|
|
y1 = 0;
|
|
if (y2 >= LCD_HEIGHT)
|
|
y2 = LCD_HEIGHT-1;
|
|
#endif
|
|
|
|
dst = FBADDR(x , y1);
|
|
dst_end = dst + (y2 - y1) * LCD_WIDTH;
|
|
|
|
do
|
|
{
|
|
pfunc(dst);
|
|
dst += LCD_WIDTH;
|
|
}
|
|
while (dst <= dst_end);
|
|
}
|
|
|
|
/* Draw a partial native bitmap */
|
|
void ICODE_ATTR lcd_bitmap_part(const fb_data *src, int src_x, int src_y,
|
|
int stride, int x, int y, int width,
|
|
int height)
|
|
{
|
|
fb_data *dst;
|
|
|
|
/******************** Image in viewport clipping **********************/
|
|
/* nothing to draw? */
|
|
if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
|
|
(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
|
|
if (x + width > current_vp->width)
|
|
width = current_vp->width - x;
|
|
if (y + height > current_vp->height)
|
|
height = current_vp->height - y;
|
|
|
|
/* adjust for viewport */
|
|
x += current_vp->x;
|
|
y += current_vp->y;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
|
|| (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clip image in viewport in screen */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
if (x + width > LCD_WIDTH)
|
|
width = LCD_WIDTH - x;
|
|
if (y + height > LCD_HEIGHT)
|
|
height = LCD_HEIGHT - y;
|
|
#endif
|
|
|
|
src += stride * src_y + src_x; /* move starting point */
|
|
dst = FBADDR(x, y);
|
|
|
|
do
|
|
{
|
|
memcpy(dst, src, width * sizeof(fb_data));
|
|
src += stride;
|
|
dst += LCD_WIDTH;
|
|
}
|
|
while (--height > 0);
|
|
}
|
|
|
|
/* Draw a partial native bitmap with transparency and foreground colors */
|
|
void ICODE_ATTR lcd_bitmap_transparent_part(const fb_data *src, int src_x,
|
|
int src_y, int stride, int x,
|
|
int y, int width, int height)
|
|
{
|
|
fb_data *dst;
|
|
fb_data fg, transparent, replacewithfg;
|
|
|
|
/******************** Image in viewport clipping **********************/
|
|
/* nothing to draw? */
|
|
if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
|
|
(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
|
|
if (x + width > current_vp->width)
|
|
width = current_vp->width - x;
|
|
if (y + height > current_vp->height)
|
|
height = current_vp->height - y;
|
|
|
|
/* adjust for viewport */
|
|
x += current_vp->x;
|
|
y += current_vp->y;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if ((x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
|
|| (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clip image in viewport in screen */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
src_x -= x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
src_y -= y;
|
|
y = 0;
|
|
}
|
|
if (x + width > LCD_WIDTH)
|
|
width = LCD_WIDTH - x;
|
|
if (y + height > LCD_HEIGHT)
|
|
height = LCD_HEIGHT - y;
|
|
#endif
|
|
|
|
src += stride * src_y + src_x; /* move starting point */
|
|
dst = FBADDR(x, y);
|
|
|
|
transparent = FB_SCALARPACK(TRANSPARENT_COLOR);
|
|
replacewithfg = FB_SCALARPACK(REPLACEWITHFG_COLOR);
|
|
fg = FB_SCALARPACK(current_vp->fg_pattern);
|
|
#define CMP(c1, c2) (c1.r == c2.r && c1.g == c2.g && c1.b == c2.b)
|
|
|
|
do
|
|
{
|
|
const fb_data *src_row = src;
|
|
fb_data *dst_row = dst;
|
|
fb_data *row_end = dst_row + width;
|
|
do
|
|
{
|
|
fb_data data = *src_row++;
|
|
if (!CMP(data, transparent))
|
|
{
|
|
if (CMP(data, replacewithfg))
|
|
data = fg;
|
|
*dst_row = data;
|
|
}
|
|
}
|
|
while (++dst_row < row_end);
|
|
src += stride;
|
|
dst += LCD_WIDTH;
|
|
}
|
|
while (--height > 0);
|
|
}
|