1112 lines
28 KiB
C
1112 lines
28 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) 2006 Jens Arnold
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*
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* Rockbox driver for 2bit vertically interleaved 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 "config.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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#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
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#define LCDFN(fn) lcd_ ## fn
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#define FBFN(fn) fb_ ## fn
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#define LCDM(ma) LCD_ ## ma
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#define FBSIZE FRAMEBUFFER_SIZE
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#define LCDNAME "lcd_"
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#define LCDFB(x,y) FBADDR(x, y)
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#define MAIN_LCD
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#endif
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/*** globals ***/
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FBFN(data) LCDFN(static_framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)] IRAM_LCDFRAMEBUFFER;
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FBFN(data) *LCDFN(framebuffer) = &LCDFN(static_framebuffer)[0][0];
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static const FBFN(data) patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000};
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static FBFN(data) *backdrop = NULL;
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static long 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 = LCDM(WIDTH),
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.height = LCDM(HEIGHT),
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.font = FONT_SYSFIXED,
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.drawmode = DRMODE_SOLID,
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.fg_pattern = LCDM(DEFAULT_FG),
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.bg_pattern = LCDM(DEFAULT_BG)
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};
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static struct viewport * current_vp IBSS_ATTR;
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static unsigned fg_pattern IBSS_ATTR;
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static unsigned bg_pattern IBSS_ATTR;
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/* LCD init */
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void LCDFN(init)(void)
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{
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LCDFN(set_viewport)(NULL);
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LCDFN(clear_display)();
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LCDFN(init_device)();
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#ifdef MAIN_LCD
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scroll_init();
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#endif
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}
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/*** parameter handling ***/
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#if !defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
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/* When compiling for remote LCD and the main LCD is colour. */
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unsigned lcd_remote_color_to_native(unsigned color)
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{
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unsigned r = (color & 0xf800) >> 10;
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unsigned g = (color & 0x07e0) >> 5;
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unsigned b = (color & 0x001f) << 2;
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/*
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* |R|
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* |Y'| = |0.299000 0.587000 0.114000| |G|
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* |B|
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*/
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return (5*r + 9*g + b) >> 8;
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}
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#endif
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void LCDFN(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 LCDFN(get_drawmode)(void)
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{
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return current_vp->drawmode;
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}
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void LCDFN(set_foreground)(unsigned brightness)
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{
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current_vp->fg_pattern = brightness;
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fg_pattern = patterns[brightness & 3];
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}
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unsigned LCDFN(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 LCDFN(set_background)(unsigned brightness)
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{
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current_vp->bg_pattern = brightness;
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bg_pattern = patterns[brightness & 3];
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}
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unsigned LCDFN(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 LCDFN(set_drawinfo)(int mode, unsigned fg_brightness,
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unsigned bg_brightness)
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{
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LCDFN(set_drawmode)(mode);
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LCDFN(set_foreground)(fg_brightness);
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LCDFN(set_background)(bg_brightness);
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}
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int LCDFN(getwidth)(void)
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{
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return current_vp->width;
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}
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int LCDFN(getheight)(void)
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{
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return current_vp->height;
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}
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void LCDFN(setfont)(int newfont)
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{
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current_vp->font = newfont;
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}
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int LCDFN(getfont)(void)
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{
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return current_vp->font;
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}
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int LCDFN(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 setpixel(int x, int y)
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{
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unsigned mask = 0x0101 << (y & 7);
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FBFN(data) *address = LCDFB(x,y>>3);
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unsigned data = *address;
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*address = data ^ ((data ^ fg_pattern) & mask);
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}
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static void clearpixel(int x, int y)
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{
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unsigned mask = 0x0101 << (y & 7);
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FBFN(data) *address = LCDFB(x,y>>3);
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unsigned data = *address;
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*address = data ^ ((data ^ bg_pattern) & mask);
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}
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static void clearimgpixel(int x, int y)
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{
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unsigned mask = 0x0101 << (y & 7);
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FBFN(data) *address = LCDFB(x,y>>3);
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unsigned data = *address;
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*address = data ^ ((data ^ *(FBFN(data) *)((long)address
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+ backdrop_offset)) & mask);
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}
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static void flippixel(int x, int y)
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{
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unsigned mask = 0x0101 << (y & 7);
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FBFN(data) *address = LCDFB(x,y>>3);
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*address ^= mask;
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}
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static void nopixel(int x, int y)
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{
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(void)x;
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(void)y;
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}
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LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_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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LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_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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LCDFN(pixelfunc_type)* const *LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
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/* 'mask' and 'bits' contain 2 bits per pixel */
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static void ICODE_ATTR flipblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address ^= bits & mask;
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}
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static void ICODE_ATTR bgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ bg_pattern) & mask & ~bits);
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}
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static void ICODE_ATTR bgimgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ *(FBFN(data) *)((long)address
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+ backdrop_offset)) & mask & ~bits);
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}
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static void ICODE_ATTR fgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ fg_pattern) & mask & bits);
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}
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static void ICODE_ATTR solidblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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unsigned bgp = bg_pattern;
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bits = bgp ^ ((bgp ^ fg_pattern) & bits);
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*address = data ^ ((data ^ bits) & mask);
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}
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static void ICODE_ATTR solidimgblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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unsigned bgp = *(FBFN(data) *)((long)address + backdrop_offset);
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bits = bgp ^ ((bgp ^ fg_pattern) & bits);
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*address = data ^ ((data ^ bits) & mask);
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}
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static void ICODE_ATTR flipinvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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*address ^= ~bits & mask;
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}
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static void ICODE_ATTR bginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ bg_pattern) & mask & bits);
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}
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static void ICODE_ATTR bgimginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ *(FBFN(data) *)((long)address
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+ backdrop_offset)) & mask & bits);
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}
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static void ICODE_ATTR fginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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*address = data ^ ((data ^ fg_pattern) & mask & ~bits);
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}
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static void ICODE_ATTR solidinvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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unsigned fgp = fg_pattern;
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bits = fgp ^ ((fgp ^ bg_pattern) & bits);
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*address = data ^ ((data ^ bits) & mask);
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}
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static void ICODE_ATTR solidimginvblock(FBFN(data) *address, unsigned mask,
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unsigned bits)
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{
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unsigned data = *address;
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unsigned fgp = fg_pattern;
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bits = fgp ^ ((fgp ^ *(FBFN(data) *)((long)address
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+ backdrop_offset)) & bits);
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*address = data ^ ((data ^ bits) & mask);
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}
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LCDFN(blockfunc_type)* const LCDFN(blockfuncs_bgcolor)[8] = {
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flipblock, bgblock, fgblock, solidblock,
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flipinvblock, bginvblock, fginvblock, solidinvblock
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};
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LCDFN(blockfunc_type)* const LCDFN(blockfuncs_backdrop)[8] = {
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flipblock, bgimgblock, fgblock, solidimgblock,
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flipinvblock, bgimginvblock, fginvblock, solidimginvblock
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};
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LCDFN(blockfunc_type)* const *LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
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void LCDFN(set_backdrop)(FBFN(data) *bd)
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{
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backdrop = bd;
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if (bd)
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{
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backdrop_offset = (long)bd - (long)LCDFN(framebuffer);
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LCDFN(pixelfuncs) = LCDFN(pixelfuncs_backdrop);
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LCDFN(blockfuncs) = LCDFN(blockfuncs_backdrop);
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}
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else
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{
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backdrop_offset = 0;
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LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
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LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
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}
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}
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FBFN(data)* LCDFN(get_backdrop)(void)
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{
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return backdrop;
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}
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static inline void setblock(FBFN(data) *address, unsigned mask, unsigned bits)
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{
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unsigned data = *address;
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bits ^= data;
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*address = data ^ (bits & mask);
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}
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/*** drawing functions ***/
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/* Clear the whole display */
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void LCDFN(clear_display)(void)
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{
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if (default_vp.drawmode & DRMODE_INVERSEVID)
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{
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memset(LCDFN(framebuffer), patterns[default_vp.fg_pattern & 3],
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FBSIZE);
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}
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else
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{
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if (backdrop)
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memcpy(LCDFN(framebuffer), backdrop, FBSIZE);
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else
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memset(LCDFN(framebuffer), patterns[default_vp.bg_pattern & 3],
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FBSIZE);
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}
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LCDFN(scroll_info).lines = 0;
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}
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/* Clear the current viewport */
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void LCDFN(clear_viewport)(void)
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{
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int lastmode;
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if (current_vp == &default_vp)
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{
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LCDFN(clear_display)();
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}
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else
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{
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lastmode = current_vp->drawmode;
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/* Invert the INVERSEVID bit and set basic mode to SOLID */
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current_vp->drawmode = (~lastmode & DRMODE_INVERSEVID) |
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DRMODE_SOLID;
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LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
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current_vp->drawmode = lastmode;
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LCDFN(scroll_stop_viewport)(current_vp);
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}
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}
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/* Set a single pixel */
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void LCDFN(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)LCDM(WIDTH))
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&& ((unsigned)y < (unsigned)LCDM(HEIGHT))
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#endif
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)
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LCDFN(pixelfuncs)[current_vp->drawmode](current_vp->x+x, current_vp->y+y);
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}
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/* Draw a line */
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void LCDFN(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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LCDFN(pixelfunc_type) *pfunc = LCDFN(pixelfuncs)[current_vp->drawmode];
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deltax = abs(x2 - x1);
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if (deltax == 0)
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{
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/* DEBUGF(LCDNAME "drawline() called for vertical line - optimisation.\n"); */
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LCDFN(vline)(x1, y1, y2);
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return;
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}
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deltay = abs(y2 - y1);
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if (deltay == 0)
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{
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/* DEBUGF(LCDNAME "drawline() called for horizontal line - optimisation.\n"); */
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LCDFN(hline)(x1, x2, y1);
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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)LCDM(WIDTH))
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&& ((unsigned)y < (unsigned)LCDM(HEIGHT))
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#endif
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)
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pfunc(current_vp->x + x, current_vp->y + 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 horizontal line (optimised) */
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void LCDFN(hline)(int x1, int x2, int y)
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{
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int x;
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int width;
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FBFN(data) *dst, *dst_end;
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unsigned mask;
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LCDFN(blockfunc_type) *bfunc;
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/* direction flip */
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if (x2 < x1)
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{
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x = x1;
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x1 = x2;
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x2 = x;
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}
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/******************** In viewport clipping **********************/
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/* nothing to draw? */
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if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width)
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|| (x2 < 0))
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return;
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if (x1 < 0)
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x1 = 0;
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if (x2 >= current_vp->width)
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x2 = current_vp->width-1;
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/* 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) LCDM(HEIGHT)) || (x1 >= LCDM(WIDTH))
|
|
|| (x2 < 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (x1 < 0)
|
|
x1 = 0;
|
|
if (x2 >= LCDM(WIDTH))
|
|
x2 = LCDM(WIDTH)-1;
|
|
#endif
|
|
|
|
width = x2 - x1 + 1;
|
|
|
|
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
|
|
dst = LCDFB(x1,y>>3);
|
|
mask = 0x0101 << (y & 7);
|
|
|
|
dst_end = dst + width;
|
|
do
|
|
bfunc(dst++, mask, 0xFFFFu);
|
|
while (dst < dst_end);
|
|
}
|
|
|
|
/* Draw a vertical line (optimised) */
|
|
void LCDFN(vline)(int x, int y1, int y2)
|
|
{
|
|
int ny;
|
|
FBFN(data) *dst;
|
|
unsigned mask, mask_bottom;
|
|
LCDFN(blockfunc_type) *bfunc;
|
|
|
|
/* direction flip */
|
|
if (y2 < y1)
|
|
{
|
|
ny = y1;
|
|
y1 = y2;
|
|
y2 = ny;
|
|
}
|
|
|
|
/******************** 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 */
|
|
y1 += current_vp->y;
|
|
y2 += current_vp->y;
|
|
x += current_vp->x;
|
|
|
|
#if defined(HAVE_VIEWPORT_CLIP)
|
|
/********************* Viewport on screen clipping ********************/
|
|
/* nothing to draw? */
|
|
if (( (unsigned) x >= (unsigned)LCDM(WIDTH)) || (y1 >= LCDM(HEIGHT))
|
|
|| (y2 < 0))
|
|
return;
|
|
|
|
/* clipping */
|
|
if (y1 < 0)
|
|
y1 = 0;
|
|
if (y2 >= LCDM(HEIGHT))
|
|
y2 = LCDM(HEIGHT)-1;
|
|
#endif
|
|
|
|
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
|
|
dst = LCDFB(x,y1>>3);
|
|
ny = y2 - (y1 & ~7);
|
|
mask = (0xFFu << (y1 & 7)) & 0xFFu;
|
|
mask |= mask << 8;
|
|
mask_bottom = 0xFFu >> (~ny & 7);
|
|
mask_bottom |= mask_bottom << 8;
|
|
|
|
for (; ny >= 8; ny -= 8)
|
|
{
|
|
bfunc(dst, mask, 0xFFFFu);
|
|
dst += LCDM(WIDTH);
|
|
mask = 0xFFFFu;
|
|
}
|
|
mask &= mask_bottom;
|
|
bfunc(dst, mask, 0xFFFFu);
|
|
}
|
|
|
|
/* Draw a rectangular box */
|
|
void LCDFN(drawrect)(int x, int y, int width, int height)
|
|
{
|
|
if ((width <= 0) || (height <= 0))
|
|
return;
|
|
|
|
int x2 = x + width - 1;
|
|
int y2 = y + height - 1;
|
|
|
|
LCDFN(vline)(x, y, y2);
|
|
LCDFN(vline)(x2, y, y2);
|
|
LCDFN(hline)(x, x2, y);
|
|
LCDFN(hline)(x, x2, y2);
|
|
}
|
|
|
|
/* Fill a rectangular area */
|
|
void LCDFN(fillrect)(int x, int y, int width, int height)
|
|
{
|
|
int ny;
|
|
FBFN(data) *dst, *dst_end;
|
|
unsigned mask, mask_bottom;
|
|
unsigned bits = 0;
|
|
LCDFN(blockfunc_type) *bfunc;
|
|
bool fillopt = false;
|
|
|
|
/******************** 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;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += 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 >= LCDM(WIDTH)) || (y >= LCDM(HEIGHT))
|
|
|| (x + width <= 0) || (y + height <= 0))
|
|
return;
|
|
|
|
/* clip image in viewport in screen */
|
|
if (x < 0)
|
|
{
|
|
width += x;
|
|
x = 0;
|
|
}
|
|
if (y < 0)
|
|
{
|
|
height += y;
|
|
y = 0;
|
|
}
|
|
if (x + width > LCDM(WIDTH))
|
|
width = LCDM(WIDTH) - x;
|
|
if (y + height > LCDM(HEIGHT))
|
|
height = LCDM(HEIGHT) - y;
|
|
#endif
|
|
|
|
|
|
if (current_vp->drawmode & DRMODE_INVERSEVID)
|
|
{
|
|
if ((current_vp->drawmode & DRMODE_BG) && !backdrop)
|
|
{
|
|
fillopt = true;
|
|
bits = bg_pattern;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (current_vp->drawmode & DRMODE_FG)
|
|
{
|
|
fillopt = true;
|
|
bits = fg_pattern;
|
|
}
|
|
}
|
|
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
|
|
dst = LCDFB(x,y>>3);
|
|
ny = height - 1 + (y & 7);
|
|
mask = (0xFFu << (y & 7)) & 0xFFu;
|
|
mask |= mask << 8;
|
|
mask_bottom = 0xFFu >> (~ny & 7);
|
|
mask_bottom |= mask_bottom << 8;
|
|
|
|
for (; ny >= 8; ny -= 8)
|
|
{
|
|
if (fillopt && (mask == 0xFFFFu))
|
|
memset16(dst, bits, width);
|
|
else
|
|
{
|
|
FBFN(data) *dst_row = dst;
|
|
|
|
dst_end = dst_row + width;
|
|
do
|
|
bfunc(dst_row++, mask, 0xFFFFu);
|
|
while (dst_row < dst_end);
|
|
}
|
|
|
|
dst += LCDM(WIDTH);
|
|
mask = 0xFFFFu;
|
|
}
|
|
mask &= mask_bottom;
|
|
|
|
if (fillopt && (mask == 0xFFFFu))
|
|
memset16(dst, bits, width);
|
|
else
|
|
{
|
|
dst_end = dst + width;
|
|
do
|
|
bfunc(dst++, mask, 0xFFFFu);
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
|
|
/* About Rockbox' internal monochrome bitmap format:
|
|
*
|
|
* A bitmap contains one bit for every pixel that defines if that pixel is
|
|
* black (1) or white (0). Bits within a byte are arranged vertically, LSB
|
|
* at top.
|
|
* The bytes are stored in row-major order, with byte 0 being top left,
|
|
* byte 1 2nd from left etc. The first row of bytes defines pixel rows
|
|
* 0..7, the second row defines pixel row 8..15 etc.
|
|
*
|
|
* This is similar to the internal lcd hw format. */
|
|
|
|
/* Draw a partial monochrome bitmap */
|
|
void ICODE_ATTR LCDFN(mono_bitmap_part)(const unsigned char *src, int src_x,
|
|
int src_y, int stride, int x, int y,
|
|
int width, int height)
|
|
{
|
|
int shift, ny;
|
|
FBFN(data) *dst, *dst_end;
|
|
unsigned data, mask, mask_bottom;
|
|
LCDFN(blockfunc_type) *bfunc;
|
|
|
|
/******************** 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 >= LCDM(WIDTH)) || (y >= LCDM(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 > LCDM(WIDTH))
|
|
width = LCDM(WIDTH) - x;
|
|
if (y + height > LCDM(HEIGHT))
|
|
height = LCDM(HEIGHT) - y;
|
|
#endif
|
|
|
|
src += stride * (src_y >> 3) + src_x; /* move starting point */
|
|
src_y &= 7;
|
|
y -= src_y;
|
|
dst = LCDFB(x,y>>3);
|
|
shift = y & 7;
|
|
ny = height - 1 + shift + src_y;
|
|
|
|
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
|
|
mask = 0xFFu << (shift + src_y);
|
|
/* not byte-doubled here because shift+src_y can be > 7 */
|
|
mask_bottom = 0xFFu >> (~ny & 7);
|
|
mask_bottom |= mask_bottom << 8;
|
|
|
|
if (shift == 0)
|
|
{
|
|
mask &= 0xFFu;
|
|
mask |= mask << 8;
|
|
|
|
for (; ny >= 8; ny -= 8)
|
|
{
|
|
const unsigned char *src_row = src;
|
|
FBFN(data) *dst_row = dst;
|
|
|
|
dst_end = dst_row + width;
|
|
do
|
|
{
|
|
data = *src_row++;
|
|
bfunc(dst_row++, mask, data | (data << 8));
|
|
}
|
|
while (dst_row < dst_end);
|
|
|
|
src += stride;
|
|
dst += LCDM(WIDTH);
|
|
mask = 0xFFFFu;
|
|
}
|
|
mask &= mask_bottom;
|
|
|
|
dst_end = dst + width;
|
|
do
|
|
{
|
|
data = *src++;
|
|
bfunc(dst++, mask, data | (data << 8));
|
|
}
|
|
while (dst < dst_end);
|
|
}
|
|
else
|
|
{
|
|
unsigned ddata;
|
|
|
|
dst_end = dst + width;
|
|
do
|
|
{
|
|
const unsigned char *src_col = src++;
|
|
FBFN(data) *dst_col = dst++;
|
|
unsigned mask_col = mask & 0xFFu;
|
|
|
|
mask_col |= mask_col << 8;
|
|
data = 0;
|
|
|
|
for (y = ny; y >= 8; y -= 8)
|
|
{
|
|
data |= *src_col << shift;
|
|
|
|
if (mask_col)
|
|
{
|
|
ddata = data & 0xFFu;
|
|
bfunc(dst_col, mask_col, ddata | (ddata << 8));
|
|
mask_col = 0xFFFFu;
|
|
}
|
|
else
|
|
{
|
|
mask_col = (mask >> 8) & 0xFFu;
|
|
mask_col |= mask_col << 8;
|
|
}
|
|
|
|
src_col += stride;
|
|
dst_col += LCDM(WIDTH);
|
|
data >>= 8;
|
|
}
|
|
data |= *src_col << shift;
|
|
mask_col &= mask_bottom;
|
|
ddata = data & 0xFFu;
|
|
bfunc(dst_col, mask_col, ddata | (ddata << 8));
|
|
}
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
|
|
/* Draw a full monochrome bitmap */
|
|
void LCDFN(mono_bitmap)(const unsigned char *src, int x, int y, int width,
|
|
int height)
|
|
{
|
|
LCDFN(mono_bitmap_part)(src, 0, 0, width, x, y, width, height);
|
|
}
|
|
|
|
/* About Rockbox' internal native bitmap format:
|
|
*
|
|
* A bitmap contains one bit in each byte of a pair of bytes for every pixel.
|
|
* 00 = white, 01 = light grey, 10 = dark grey, 11 = black. Bits within a byte
|
|
* are arranged vertically, LSB at top.
|
|
* The pairs of bytes are stored as shorts, in row-major order, with word 0
|
|
* being top left, word 1 2nd from left etc. The first row of words defines
|
|
* pixel rows 0..7, the second row defines pixel row 8..15 etc.
|
|
*
|
|
* This is the same as the internal lcd hw format. */
|
|
|
|
/* Draw a partial native bitmap */
|
|
void ICODE_ATTR LCDFN(bitmap_part)(const FBFN(data) *src, int src_x,
|
|
int src_y, int stride, int x, int y,
|
|
int width, int height)
|
|
{
|
|
int shift, ny;
|
|
FBFN(data) *dst, *dst_end;
|
|
unsigned mask, mask_bottom;
|
|
|
|
/******************** 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 >= LCDM(WIDTH)) || (y >= LCDM(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 > LCDM(WIDTH))
|
|
width = LCDM(WIDTH) - x;
|
|
if (y + height > LCDM(HEIGHT))
|
|
height = LCDM(HEIGHT) - y;
|
|
#endif
|
|
|
|
src += stride * (src_y >> 3) + src_x; /* move starting point */
|
|
src_y &= 7;
|
|
y -= src_y;
|
|
dst = LCDFB(x,y>>3);
|
|
shift = y & 7;
|
|
ny = height - 1 + shift + src_y;
|
|
|
|
mask = 0xFFu << (shift + src_y);
|
|
/* not byte-doubled here because shift+src_y can be > 7 */
|
|
mask_bottom = 0xFFu >> (~ny & 7);
|
|
mask_bottom |= mask_bottom << 8;
|
|
|
|
if (shift == 0)
|
|
{
|
|
mask &= 0xFFu;
|
|
mask |= mask << 8;
|
|
|
|
for (; ny >= 8; ny -= 8)
|
|
{
|
|
if (mask == 0xFFFFu)
|
|
memcpy(dst, src, width * sizeof(FBFN(data)));
|
|
else
|
|
{
|
|
const FBFN(data) *src_row = src;
|
|
FBFN(data) *dst_row = dst;
|
|
|
|
dst_end = dst_row + width;
|
|
do
|
|
setblock(dst_row++, mask, *src_row++);
|
|
while (dst_row < dst_end);
|
|
}
|
|
src += stride;
|
|
dst += LCDM(WIDTH);
|
|
mask = 0xFFFFu;
|
|
}
|
|
mask &= mask_bottom;
|
|
|
|
if (mask == 0xFFFFu)
|
|
memcpy(dst, src, width * sizeof(FBFN(data)));
|
|
else
|
|
{
|
|
dst_end = dst + width;
|
|
do
|
|
setblock(dst++, mask, *src++);
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
unsigned datamask = (0xFFu << shift) & 0xFFu;
|
|
|
|
datamask |= datamask << 8;
|
|
|
|
dst_end = dst + width;
|
|
do
|
|
{
|
|
const FBFN(data) *src_col = src++;
|
|
FBFN(data) *dst_col = dst++;
|
|
unsigned mask_col = mask & 0xFFu;
|
|
unsigned data, olddata = 0;
|
|
|
|
mask_col |= mask_col << 8;
|
|
|
|
for (y = ny; y >= 8; y -= 8)
|
|
{
|
|
data = *src_col << shift;
|
|
|
|
if (mask_col)
|
|
{
|
|
setblock(dst_col, mask_col,
|
|
olddata ^((olddata ^ data) & datamask));
|
|
mask_col = 0xFFFFu;
|
|
}
|
|
else
|
|
{
|
|
mask_col = (mask >> 8) & 0xFFu;
|
|
mask_col |= mask_col << 8;
|
|
}
|
|
src_col += stride;
|
|
dst_col += LCDM(WIDTH);
|
|
olddata = data >> 8;
|
|
}
|
|
data = *src_col << shift;
|
|
setblock(dst_col, mask_col & mask_bottom,
|
|
olddata ^((olddata ^ data) & datamask));
|
|
}
|
|
while (dst < dst_end);
|
|
}
|
|
}
|
|
|
|
/* Draw a full native bitmap */
|
|
void LCDFN(bitmap)(const FBFN(data) *src, int x, int y, int width, int height)
|
|
{
|
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LCDFN(bitmap_part)(src, 0, 0, width, x, y, width, height);
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}
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#include "lcd-bitmap-common.c"
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