1179 lines
31 KiB
C
1179 lines
31 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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*
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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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/* to be #included by lcd-16bit*.c */
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#if !defined(ROW_INC) || !defined(COL_INC)
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#error ROW_INC or COL_INC not defined
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#endif
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enum fill_opt {
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OPT_NONE = 0,
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OPT_SET,
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OPT_COPY
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};
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/*** globals ***/
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fb_data lcd_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH]
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IRAM_LCDFRAMEBUFFER CACHEALIGN_AT_LEAST_ATTR(16);
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static fb_data* lcd_backdrop = NULL;
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static long lcd_backdrop_offset IDATA_ATTR = 0;
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static struct viewport default_vp =
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{
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.x = 0,
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.y = 0,
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.width = LCD_WIDTH,
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.height = LCD_HEIGHT,
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.font = FONT_SYSFIXED,
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.drawmode = DRMODE_SOLID,
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.fg_pattern = LCD_DEFAULT_FG,
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.bg_pattern = LCD_DEFAULT_BG,
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.lss_pattern = LCD_DEFAULT_BG,
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.lse_pattern = LCD_DEFAULT_BG,
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.lst_pattern = LCD_DEFAULT_BG,
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};
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static struct viewport* current_vp IDATA_ATTR = &default_vp;
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/* LCD init */
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void lcd_init(void)
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{
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lcd_clear_display();
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/* Call device specific init */
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lcd_init_device();
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scroll_init();
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}
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/*** Viewports ***/
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void lcd_set_viewport(struct viewport* vp)
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{
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if (vp == NULL)
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current_vp = &default_vp;
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else
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current_vp = vp;
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#if defined(SIMULATOR)
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/* Force the viewport to be within bounds. If this happens it should
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* be considered an error - the viewport will not draw as it might be
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* expected.
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*/
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if((unsigned) current_vp->x > (unsigned) LCD_WIDTH
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|| (unsigned) current_vp->y > (unsigned) LCD_HEIGHT
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|| current_vp->x + current_vp->width > LCD_WIDTH
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|| current_vp->y + current_vp->height > LCD_HEIGHT)
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{
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#if !defined(HAVE_VIEWPORT_CLIP)
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DEBUGF("ERROR: "
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#else
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DEBUGF("NOTE: "
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#endif
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"set_viewport out of bounds: x: %d y: %d width: %d height:%d\n",
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current_vp->x, current_vp->y,
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current_vp->width, current_vp->height);
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}
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#endif
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}
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void lcd_update_viewport(void)
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{
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lcd_update_rect(current_vp->x, current_vp->y,
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current_vp->width, current_vp->height);
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}
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void lcd_update_viewport_rect(int x, int y, int width, int height)
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{
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lcd_update_rect(current_vp->x + x, current_vp->y + y, width, height);
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}
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/*** parameter handling ***/
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void lcd_set_drawmode(int mode)
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{
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current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
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}
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int lcd_get_drawmode(void)
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{
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return current_vp->drawmode;
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}
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void lcd_set_foreground(unsigned color)
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{
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current_vp->fg_pattern = color;
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}
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unsigned lcd_get_foreground(void)
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{
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return current_vp->fg_pattern;
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}
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void lcd_set_background(unsigned color)
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{
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current_vp->bg_pattern = color;
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}
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unsigned lcd_get_background(void)
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{
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return current_vp->bg_pattern;
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}
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void lcd_set_selector_start(unsigned color)
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{
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current_vp->lss_pattern = color;
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}
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void lcd_set_selector_end(unsigned color)
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{
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current_vp->lse_pattern = color;
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}
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void lcd_set_selector_text(unsigned color)
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{
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current_vp->lst_pattern = color;
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}
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void lcd_set_drawinfo(int mode, unsigned fg_color, unsigned bg_color)
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{
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lcd_set_drawmode(mode);
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current_vp->fg_pattern = fg_color;
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current_vp->bg_pattern = bg_color;
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}
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int lcd_getwidth(void)
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{
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return current_vp->width;
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}
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int lcd_getheight(void)
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{
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return current_vp->height;
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}
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void lcd_setfont(int newfont)
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{
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current_vp->font = newfont;
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}
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int lcd_getfont(void)
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{
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return current_vp->font;
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}
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int lcd_getstringsize(const unsigned char *str, int *w, int *h)
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{
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return font_getstringsize(str, w, h, current_vp->font);
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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 = 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 = 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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*address = ~(*address);
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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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void lcd_set_backdrop(fb_data* backdrop)
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{
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lcd_backdrop = backdrop;
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if (backdrop)
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{
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lcd_backdrop_offset = (long)backdrop - (long)&lcd_framebuffer[0][0];
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lcd_fastpixelfuncs = lcd_fastpixelfuncs_backdrop;
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}
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else
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{
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lcd_backdrop_offset = 0;
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lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor;
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}
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}
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fb_data* lcd_get_backdrop(void)
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{
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return lcd_backdrop;
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}
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/* Clear the whole display */
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void lcd_clear_display(void)
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{
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struct viewport* old_vp = current_vp;
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current_vp = &default_vp;
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lcd_clear_viewport();
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current_vp = old_vp;
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}
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/* Set a single pixel */
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void lcd_drawpixel(int x, int y)
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{
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if ( ((unsigned)x < (unsigned)current_vp->width)
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&& ((unsigned)y < (unsigned)current_vp->height)
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#if defined(HAVE_VIEWPORT_CLIP)
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&& ((unsigned)x < (unsigned)LCD_WIDTH)
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&& ((unsigned)y < (unsigned)LCD_HEIGHT)
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#endif
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)
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lcd_fastpixelfuncs[current_vp->drawmode](LCDADDR(current_vp->x+x, current_vp->y+y));
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}
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/* Draw a line */
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void lcd_drawline(int x1, int y1, int x2, int y2)
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{
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int numpixels;
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int i;
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int deltax, deltay;
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int d, dinc1, dinc2;
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int x, xinc1, xinc2;
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int y, yinc1, yinc2;
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lcd_fastpixelfunc_type *pfunc = lcd_fastpixelfuncs[current_vp->drawmode];
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deltay = abs(y2 - y1);
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if (deltay == 0)
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{
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/* DEBUGF("lcd_drawline() called for horizontal line - optimisation.\n"); */
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lcd_hline(x1, x2, y1);
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return;
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}
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deltax = abs(x2 - x1);
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if (deltax == 0)
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{
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/* DEBUGF("lcd_drawline() called for vertical line - optimisation.\n"); */
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lcd_vline(x1, y1, y2);
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return;
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}
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xinc2 = 1;
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yinc2 = 1;
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if (deltax >= deltay)
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{
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numpixels = deltax;
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d = 2 * deltay - deltax;
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dinc1 = deltay * 2;
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dinc2 = (deltay - deltax) * 2;
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xinc1 = 1;
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yinc1 = 0;
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}
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else
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{
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numpixels = deltay;
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d = 2 * deltax - deltay;
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dinc1 = deltax * 2;
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dinc2 = (deltax - deltay) * 2;
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xinc1 = 0;
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yinc1 = 1;
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}
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numpixels++; /* include endpoints */
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if (x1 > x2)
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{
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xinc1 = -xinc1;
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xinc2 = -xinc2;
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}
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if (y1 > y2)
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{
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yinc1 = -yinc1;
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yinc2 = -yinc2;
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}
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x = x1;
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y = y1;
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for (i = 0; i < numpixels; i++)
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{
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if ( ((unsigned)x < (unsigned)current_vp->width)
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&& ((unsigned)y < (unsigned)current_vp->height)
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#if defined(HAVE_VIEWPORT_CLIP)
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&& ((unsigned)x < (unsigned)LCD_WIDTH)
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&& ((unsigned)y < (unsigned)LCD_HEIGHT)
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#endif
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)
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pfunc(LCDADDR(x + current_vp->x, y + current_vp->y));
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if (d < 0)
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{
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d += dinc1;
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x += xinc1;
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y += yinc1;
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}
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else
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{
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d += dinc2;
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x += xinc2;
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y += yinc2;
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}
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}
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}
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/* Draw a rectangular box */
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void lcd_drawrect(int x, int y, int width, int height)
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{
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if ((width <= 0) || (height <= 0))
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return;
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int x2 = x + width - 1;
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int y2 = y + height - 1;
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lcd_vline(x, y, y2);
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lcd_vline(x2, y, y2);
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lcd_hline(x, x2, y);
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lcd_hline(x, x2, y2);
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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 = LCDADDR(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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/* 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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int fg, bg;
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long 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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|
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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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*dst = ~(*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:
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if (lcd_backdrop)
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{
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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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}
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else
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{
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bg = 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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}
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break;
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case DRMODE_FG:
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fg = 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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|
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case DRMODE_SOLID:
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fg = current_vp->fg_pattern;
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if (lcd_backdrop)
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{
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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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}
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else
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{
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bg = 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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}
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break;
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|
}
|
|
}
|
|
while (src < src_end);
|
|
}
|
|
/* Draw a full monochrome bitmap */
|
|
void lcd_mono_bitmap(const unsigned char *src, int x, int y, int width, int height)
|
|
{
|
|
lcd_mono_bitmap_part(src, 0, 0, width, x, y, width, height);
|
|
}
|
|
|
|
|
|
/* About Rockbox' internal alpha channel format (for ALPHA_COLOR_FONT_DEPTH == 2)
|
|
*
|
|
* For each pixel, 4bit of alpha information is stored in a byte-stream,
|
|
* so two pixels are packed into one byte.
|
|
* The lower nibble is the first pixel, the upper one the second. The stride is
|
|
* horizontal. E.g row0: pixel0: byte0[0:3], pixel1: byte0[4:7], pixel2: byte1[0:3],...
|
|
* The format is independant of the internal display orientation and color
|
|
* representation, as to support the same font files on all displays.
|
|
* The values go linear from 0 (fully transparent) to 15 (fully opaque).
|
|
*
|
|
* This might suggest that rows need to have an even number of pixels.
|
|
* However this is generally not the case. lcd_alpha_bitmap_part_mix() can deal
|
|
* with uneven colums (i.e. two rows can share one byte). And font files do
|
|
* exploit this.
|
|
* However, this is difficult to do for image files, especially bottom-up bitmaps,
|
|
* so lcd_bmp() do expect even rows.
|
|
*/
|
|
|
|
#define ALPHA_COLOR_FONT_DEPTH 2
|
|
#define ALPHA_COLOR_LOOKUP_SHIFT (1 << ALPHA_COLOR_FONT_DEPTH)
|
|
#define ALPHA_COLOR_LOOKUP_SIZE ((1 << ALPHA_COLOR_LOOKUP_SHIFT) - 1)
|
|
#define ALPHA_COLOR_PIXEL_PER_BYTE (8 >> ALPHA_COLOR_FONT_DEPTH)
|
|
#define ALPHA_COLOR_PIXEL_PER_WORD (32 >> ALPHA_COLOR_FONT_DEPTH)
|
|
#ifdef CPU_ARM
|
|
#define BLEND_INIT do {} while (0)
|
|
#define BLEND_FINISH do {} while(0)
|
|
#define BLEND_START(acc, color, alpha) \
|
|
asm volatile("mul %0, %1, %2" : "=&r" (acc) : "r" (color), "r" (alpha))
|
|
#define BLEND_CONT(acc, color, alpha) \
|
|
asm volatile("mla %0, %1, %2, %0" : "+&r" (acc) : "r" (color), "r" (alpha))
|
|
#define BLEND_OUT(acc) do {} while (0)
|
|
#elif defined(CPU_COLDFIRE)
|
|
#define ALPHA_BITMAP_READ_WORDS
|
|
#define BLEND_INIT \
|
|
unsigned long _macsr = coldfire_get_macsr(); \
|
|
coldfire_set_macsr(EMAC_UNSIGNED)
|
|
#define BLEND_FINISH \
|
|
coldfire_set_macsr(_macsr)
|
|
#define BLEND_START(acc, color, alpha) \
|
|
asm volatile("mac.l %0, %1, %%acc0" :: "%d" (color), "d" (alpha))
|
|
#define BLEND_CONT BLEND_START
|
|
#define BLEND_OUT(acc) asm volatile("movclr.l %%acc0, %0" : "=d" (acc))
|
|
#else
|
|
#define BLEND_INIT do {} while (0)
|
|
#define BLEND_FINISH do {} while(0)
|
|
#define BLEND_START(acc, color, alpha) ((acc) = (color) * (alpha))
|
|
#define BLEND_CONT(acc, color, alpha) ((acc) += (color) * (alpha))
|
|
#define BLEND_OUT(acc) do {} while (0)
|
|
#endif
|
|
|
|
/* Blend the given two colors */
|
|
static inline unsigned blend_two_colors(unsigned c1, unsigned c2, unsigned a)
|
|
{
|
|
a += a >> (ALPHA_COLOR_LOOKUP_SHIFT - 1);
|
|
#if (LCD_PIXELFORMAT == RGB565SWAPPED)
|
|
c1 = swap16(c1);
|
|
c2 = swap16(c2);
|
|
#endif
|
|
unsigned c1l = (c1 | (c1 << 16)) & 0x07e0f81f;
|
|
unsigned c2l = (c2 | (c2 << 16)) & 0x07e0f81f;
|
|
unsigned p;
|
|
BLEND_START(p, c1l, a);
|
|
BLEND_CONT(p, c2l, ALPHA_COLOR_LOOKUP_SIZE + 1 - a);
|
|
BLEND_OUT(p);
|
|
p = (p >> ALPHA_COLOR_LOOKUP_SHIFT) & 0x07e0f81f;
|
|
p |= (p >> 16);
|
|
#if (LCD_PIXELFORMAT == RGB565SWAPPED)
|
|
return swap16(p);
|
|
#else
|
|
return p;
|
|
#endif
|
|
}
|
|
|
|
/* Blend the given color with the value from the alpha_color_lookup table */
|
|
static inline unsigned blend_color(unsigned c, unsigned a)
|
|
{
|
|
return blend_two_colors(c, current_vp->fg_pattern, a);
|
|
}
|
|
|
|
/* 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;
|
|
const fb_data *image_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;
|
|
/* initialize blending */
|
|
BLEND_INIT;
|
|
|
|
/* 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))
|
|
{
|
|
BLEND_FINISH;
|
|
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
|
|
|
|
if (drmode & DRMODE_INVERSEVID)
|
|
{
|
|
dmask = 0xffffffff;
|
|
drmode &= DRMODE_SOLID; /* mask out inversevid */
|
|
}
|
|
/* sourcing from an image ignore drawmode.
|
|
* Set to DRMODE_BG as we use its code path in the switch below */
|
|
if (image != NULL)
|
|
{
|
|
drmode = DRMODE_BG;
|
|
}
|
|
if (drmode == DRMODE_BG)
|
|
{
|
|
dmask = ~dmask;
|
|
}
|
|
|
|
dst_row = LCDADDR(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
|
|
if (image)
|
|
image += skip_start_image;
|
|
image_row = image;
|
|
|
|
/* go through the rows and update each pixel */
|
|
do
|
|
{
|
|
col = width;
|
|
dst = dst_row;
|
|
dst_row += ROW_INC;
|
|
if (image_row) {
|
|
image = image_row;
|
|
image_row += STRIDE_MAIN(stride_image,1);
|
|
}
|
|
else
|
|
image = dst;
|
|
#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
|
|
/* we don't want to have this in our inner
|
|
* loop and the codesize increase is minimal */
|
|
switch (drmode)
|
|
{
|
|
case DRMODE_COMPLEMENT:
|
|
do
|
|
{
|
|
*dst = blend_two_colors(*dst, ~(*dst),
|
|
data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_BG:
|
|
if(lcd_backdrop)
|
|
{
|
|
uintptr_t bo = lcd_backdrop_offset;
|
|
do
|
|
{
|
|
*dst = blend_two_colors(*(fb_data *)((uintptr_t)dst + bo),
|
|
*image, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
|
|
dst += COL_INC;
|
|
image += STRIDE_MAIN(1, stride_image);
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
*dst = blend_two_colors(current_vp->bg_pattern,
|
|
*image, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
image += STRIDE_MAIN(1, stride_image);
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
}
|
|
break;
|
|
case DRMODE_FG:
|
|
do
|
|
{
|
|
*dst = blend_color(*dst, data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
break;
|
|
case DRMODE_SOLID:
|
|
if(lcd_backdrop)
|
|
{
|
|
uintptr_t bo = lcd_backdrop_offset;
|
|
do
|
|
{
|
|
*dst = blend_color(*(fb_data *)((uintptr_t)dst + bo),
|
|
data & ALPHA_COLOR_LOOKUP_SIZE );
|
|
dst += COL_INC;
|
|
UPDATE_SRC_ALPHA;
|
|
}
|
|
while (--col);
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
*dst = blend_color(current_vp->bg_pattern,
|
|
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
|
|
} while (--row);
|
|
|
|
BLEND_FINISH;
|
|
}
|
|
|
|
/* Draw a full native bitmap */
|
|
void lcd_bitmap(const fb_data *src, int x, int y, int width, int height)
|
|
{
|
|
lcd_bitmap_part(src, 0, 0, STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
|
|
}
|
|
|
|
/* Draw a full native bitmap with a transparent color */
|
|
void lcd_bitmap_transparent(const fb_data *src, int x, int y,
|
|
int width, int height)
|
|
{
|
|
lcd_bitmap_transparent_part(src, 0, 0,
|
|
STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
|
|
}
|
|
|
|
/* draw alpha bitmap for anti-alias font */
|
|
void ICODE_ATTR lcd_alpha_bitmap_part(const unsigned char *src, int src_x,
|
|
int src_y, int stride, int x, int y,
|
|
int width, int height)
|
|
{
|
|
lcd_alpha_bitmap_part_mix(NULL, src, src_x, src_y, x, y, width, height, 0, stride);
|
|
}
|
|
|
|
/* Draw a partial bitmap (mono or native) including alpha channel */
|
|
void ICODE_ATTR lcd_bmp_part(const struct bitmap* bm, int src_x, int src_y,
|
|
int x, int y, int width, int height)
|
|
{
|
|
int bitmap_stride = STRIDE_MAIN(bm->width, bm->height);
|
|
if (bm->format == FORMAT_MONO)
|
|
lcd_mono_bitmap_part(bm->data, src_x, src_y, bitmap_stride, x, y, width, height);
|
|
else if (bm->alpha_offset > 0)
|
|
lcd_alpha_bitmap_part_mix((fb_data*)bm->data, bm->data+bm->alpha_offset,
|
|
src_x, src_y, x, y, width, height,
|
|
bitmap_stride, ALIGN_UP(bm->width, 2));
|
|
else
|
|
lcd_bitmap_transparent_part((fb_data*)bm->data,
|
|
src_x, src_y, bitmap_stride, x, y, width, height);
|
|
}
|
|
|
|
/* Draw a native bitmap with alpha channel */
|
|
void ICODE_ATTR lcd_bmp(const struct bitmap *bmp, int x, int y)
|
|
{
|
|
lcd_bmp_part(bmp, 0, 0, x, y, bmp->width, bmp->height);
|
|
}
|
|
|
|
/**
|
|
* |R| |1.000000 -0.000001 1.402000| |Y'|
|
|
* |G| = |1.000000 -0.334136 -0.714136| |Pb|
|
|
* |B| |1.000000 1.772000 0.000000| |Pr|
|
|
* Scaled, normalized, rounded and tweaked to yield RGB 565:
|
|
* |R| |74 0 101| |Y' - 16| >> 9
|
|
* |G| = |74 -24 -51| |Cb - 128| >> 8
|
|
* |B| |74 128 0| |Cr - 128| >> 9
|
|
*/
|
|
#define YFAC (74)
|
|
#define RVFAC (101)
|
|
#define GUFAC (-24)
|
|
#define GVFAC (-51)
|
|
#define BUFAC (128)
|
|
|
|
static inline int clamp(int val, int min, int max)
|
|
{
|
|
if (val < min)
|
|
val = min;
|
|
else if (val > max)
|
|
val = max;
|
|
return val;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
/*
|
|
* weak attribute doesn't work for win32 as of gcc 4.6.2 and binutils 2.21.52
|
|
* When building win32 simulators, we won't be using an optimized version of
|
|
* lcd_blit_yuv(), so just don't use the weak attribute.
|
|
*/
|
|
__attribute__((weak))
|
|
#endif
|
|
void lcd_yuv_set_options(unsigned options)
|
|
{
|
|
(void)options;
|
|
}
|
|
|
|
/* Draw a partial YUV colour bitmap */
|
|
#ifndef _WIN32
|
|
__attribute__((weak))
|
|
#endif
|
|
void lcd_blit_yuv(unsigned char * const src[3],
|
|
int src_x, int src_y, int stride,
|
|
int x, int y, int width, int height)
|
|
{
|
|
const unsigned char *ysrc, *usrc, *vsrc;
|
|
int linecounter;
|
|
fb_data *dst, *row_end;
|
|
long z;
|
|
|
|
/* width and height must be >= 2 and an even number */
|
|
width &= ~1;
|
|
linecounter = height >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst = &lcd_framebuffer[y][x];
|
|
row_end = dst + width;
|
|
#else
|
|
dst = &lcd_framebuffer[x][LCD_WIDTH - y - 1];
|
|
row_end = dst + LCD_WIDTH * width;
|
|
#endif
|
|
|
|
z = stride * src_y;
|
|
ysrc = src[0] + z + src_x;
|
|
usrc = src[1] + (z >> 2) + (src_x >> 1);
|
|
vsrc = src[2] + (usrc - src[1]);
|
|
|
|
/* stride => amount to jump from end of last row to start of next */
|
|
stride -= width;
|
|
|
|
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
|
|
|
|
do
|
|
{
|
|
do
|
|
{
|
|
int y, cb, cr, rv, guv, bu, r, g, b;
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
cb = *usrc++ - 128;
|
|
cr = *vsrc++ - 128;
|
|
|
|
rv = RVFAC*cr;
|
|
guv = GUFAC*cb + GVFAC*cr;
|
|
bu = BUFAC*cb;
|
|
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
}
|
|
while (dst < row_end);
|
|
|
|
ysrc += stride;
|
|
usrc -= width >> 1;
|
|
vsrc -= width >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
row_end += LCD_WIDTH;
|
|
dst += LCD_WIDTH - width;
|
|
#else
|
|
row_end -= 1;
|
|
dst -= LCD_WIDTH*width + 1;
|
|
#endif
|
|
|
|
do
|
|
{
|
|
int y, cb, cr, rv, guv, bu, r, g, b;
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
cb = *usrc++ - 128;
|
|
cr = *vsrc++ - 128;
|
|
|
|
rv = RVFAC*cr;
|
|
guv = GUFAC*cb + GVFAC*cr;
|
|
bu = BUFAC*cb;
|
|
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
}
|
|
while (dst < row_end);
|
|
|
|
ysrc += stride;
|
|
usrc += stride >> 1;
|
|
vsrc += stride >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
row_end += LCD_WIDTH;
|
|
dst += LCD_WIDTH - width;
|
|
#else
|
|
row_end -= 1;
|
|
dst -= LCD_WIDTH*width + 1;
|
|
#endif
|
|
}
|
|
while (--linecounter > 0);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
lcd_update_rect(x, y, width, height);
|
|
#else
|
|
lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
|
|
#endif
|
|
}
|