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rockbox/firmware/drivers/lcd-2bit-vi.c
Nils Wallménius 3d4701a6e4 FS#10080 
* Move strncpy() from core to the pluginlib
* Introduce strlcpy() and use that instead in most places (use memcpy in a few) in core and some plugins
* Drop strncpy() from the codec api as no codec used it
* Bump codec and plugin api versions


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21863 a1c6a512-1295-4272-9138-f99709370657
2009-07-14 13:57:45 +00:00

1240 lines
32 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Jens Arnold
*
* Rockbox driver for 2bit vertically interleaved LCDs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "lcd.h"
#include "kernel.h"
#include "thread.h"
#include <string.h>
#include <stdlib.h>
#include "memory.h"
#include "file.h"
#include "debug.h"
#include "system.h"
#include "font.h"
#include "rbunicode.h"
#include "bidi.h"
#include "scroll_engine.h"
#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
#define LCDFN(fn) lcd_ ## fn
#define FBFN(fn) fb_ ## fn
#define LCDM(ma) LCD_ ## ma
#define LCDNAME "lcd_"
#define MAIN_LCD
#endif
/*** globals ***/
FBFN(data) LCDFN(framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)] IBSS_ATTR;
static const FBFN(data) patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000};
static FBFN(data) *backdrop = NULL;
static long backdrop_offset IDATA_ATTR = 0;
static struct viewport default_vp =
{
.x = 0,
.y = 0,
.width = LCDM(WIDTH),
.height = LCDM(HEIGHT),
.font = FONT_SYSFIXED,
.drawmode = DRMODE_SOLID,
.fg_pattern = LCDM(DEFAULT_FG),
.bg_pattern = LCDM(DEFAULT_BG)
};
static struct viewport *current_vp IBSS_ATTR;
static unsigned fg_pattern IBSS_ATTR;
static unsigned bg_pattern IBSS_ATTR;
/*** Viewports ***/
void LCDFN(set_viewport)(struct viewport* vp)
{
if (vp == NULL)
current_vp = &default_vp;
else
current_vp = vp;
fg_pattern = patterns[current_vp->fg_pattern & 3];
bg_pattern = patterns[current_vp->bg_pattern & 3];
}
void LCDFN(update_viewport)(void)
{
LCDFN(update_rect)(current_vp->x, current_vp->y,
current_vp->width, current_vp->height);
}
void LCDFN(update_viewport_rect)(int x, int y, int width, int height)
{
LCDFN(update_rect)(current_vp->x + x, current_vp->y + y, width, height);
}
/* LCD init */
void LCDFN(init)(void)
{
LCDFN(set_viewport)(NULL);
LCDFN(clear_display)();
#ifndef SIMULATOR
LCDFN(init_device)();
#endif
#ifdef MAIN_LCD
scroll_init();
#endif
}
/*** parameter handling ***/
#if !defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
/* When compiling for remote LCD and the main LCD is colour. */
unsigned lcd_remote_color_to_native(unsigned color)
{
unsigned r = (color & 0xf800) >> 10;
unsigned g = (color & 0x07e0) >> 5;
unsigned b = (color & 0x001f) << 2;
/*
* |R|
* |Y'| = |0.299000 0.587000 0.114000| |G|
* |B|
*/
return (5*r + 9*g + b) >> 8;
}
#endif
void LCDFN(set_drawmode)(int mode)
{
current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
}
int LCDFN(get_drawmode)(void)
{
return current_vp->drawmode;
}
void LCDFN(set_foreground)(unsigned brightness)
{
current_vp->fg_pattern = brightness;
fg_pattern = patterns[brightness & 3];
}
unsigned LCDFN(get_foreground)(void)
{
return current_vp->fg_pattern;
}
void LCDFN(set_background)(unsigned brightness)
{
current_vp->bg_pattern = brightness;
bg_pattern = patterns[brightness & 3];
}
unsigned LCDFN(get_background)(void)
{
return current_vp->bg_pattern;
}
void LCDFN(set_drawinfo)(int mode, unsigned fg_brightness,
unsigned bg_brightness)
{
LCDFN(set_drawmode)(mode);
LCDFN(set_foreground)(fg_brightness);
LCDFN(set_background)(bg_brightness);
}
int LCDFN(getwidth)(void)
{
return current_vp->width;
}
int LCDFN(getheight)(void)
{
return current_vp->height;
}
void LCDFN(setfont)(int newfont)
{
current_vp->font = newfont;
}
int LCDFN(getfont)(void)
{
return current_vp->font;
}
int LCDFN(getstringsize)(const unsigned char *str, int *w, int *h)
{
return font_getstringsize(str, w, h, current_vp->font);
}
/*** low-level drawing functions ***/
static void setpixel(int x, int y)
{
unsigned mask = 0x0101 << (y & 7);
FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask);
}
static void clearpixel(int x, int y)
{
unsigned mask = 0x0101 << (y & 7);
FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask);
}
static void clearimgpixel(int x, int y)
{
unsigned mask = 0x0101 << (y & 7);
FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
unsigned data = *address;
*address = data ^ ((data ^ *(FBFN(data) *)((long)address
+ backdrop_offset)) & mask);
}
static void flippixel(int x, int y)
{
unsigned mask = 0x0101 << (y & 7);
FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
*address ^= mask;
}
static void nopixel(int x, int y)
{
(void)x;
(void)y;
}
LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_bgcolor)[8] = {
flippixel, nopixel, setpixel, setpixel,
nopixel, clearpixel, nopixel, clearpixel
};
LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_backdrop)[8] = {
flippixel, nopixel, setpixel, setpixel,
nopixel, clearimgpixel, nopixel, clearimgpixel
};
LCDFN(pixelfunc_type)* const *LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
/* 'mask' and 'bits' contain 2 bits per pixel */
static void ICODE_ATTR flipblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
*address ^= bits & mask;
}
static void ICODE_ATTR bgblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask & ~bits);
}
static void ICODE_ATTR bgimgblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ *(FBFN(data) *)((long)address
+ backdrop_offset)) & mask & ~bits);
}
static void ICODE_ATTR fgblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask & bits);
}
static void ICODE_ATTR solidblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
unsigned bgp = bg_pattern;
bits = bgp ^ ((bgp ^ fg_pattern) & bits);
*address = data ^ ((data ^ bits) & mask);
}
static void ICODE_ATTR solidimgblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
unsigned bgp = *(FBFN(data) *)((long)address + backdrop_offset);
bits = bgp ^ ((bgp ^ fg_pattern) & bits);
*address = data ^ ((data ^ bits) & mask);
}
static void ICODE_ATTR flipinvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
*address ^= ~bits & mask;
}
static void ICODE_ATTR bginvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask & bits);
}
static void ICODE_ATTR bgimginvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ *(FBFN(data) *)((long)address
+ backdrop_offset)) & mask & bits);
}
static void ICODE_ATTR fginvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask & ~bits);
}
static void ICODE_ATTR solidinvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
unsigned fgp = fg_pattern;
bits = fgp ^ ((fgp ^ bg_pattern) & bits);
*address = data ^ ((data ^ bits) & mask);
}
static void ICODE_ATTR solidimginvblock(FBFN(data) *address, unsigned mask,
unsigned bits)
{
unsigned data = *address;
unsigned fgp = fg_pattern;
bits = fgp ^ ((fgp ^ *(FBFN(data) *)((long)address
+ backdrop_offset)) & bits);
*address = data ^ ((data ^ bits) & mask);
}
LCDFN(blockfunc_type)* const LCDFN(blockfuncs_bgcolor)[8] = {
flipblock, bgblock, fgblock, solidblock,
flipinvblock, bginvblock, fginvblock, solidinvblock
};
LCDFN(blockfunc_type)* const LCDFN(blockfuncs_backdrop)[8] = {
flipblock, bgimgblock, fgblock, solidimgblock,
flipinvblock, bgimginvblock, fginvblock, solidimginvblock
};
LCDFN(blockfunc_type)* const *LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
void LCDFN(set_backdrop)(FBFN(data) *bd)
{
backdrop = bd;
if (bd)
{
backdrop_offset = (long)bd - (long)LCDFN(framebuffer);
LCDFN(pixelfuncs) = LCDFN(pixelfuncs_backdrop);
LCDFN(blockfuncs) = LCDFN(blockfuncs_backdrop);
}
else
{
backdrop_offset = 0;
LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
}
}
FBFN(data)* LCDFN(get_backdrop)(void)
{
return backdrop;
}
static inline void setblock(FBFN(data) *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
bits ^= data;
*address = data ^ (bits & mask);
}
/*** drawing functions ***/
/* Clear the whole display */
void LCDFN(clear_display)(void)
{
if (default_vp.drawmode & DRMODE_INVERSEVID)
{
memset(LCDFN(framebuffer), patterns[default_vp.fg_pattern & 3],
sizeof LCDFN(framebuffer));
}
else
{
if (backdrop)
memcpy(LCDFN(framebuffer), backdrop, sizeof LCDFN(framebuffer));
else
memset(LCDFN(framebuffer), patterns[default_vp.bg_pattern & 3],
sizeof LCDFN(framebuffer));
}
LCDFN(scroll_info).lines = 0;
}
/* Clear the current viewport */
void LCDFN(clear_viewport)(void)
{
int lastmode;
if (current_vp == &default_vp)
{
LCDFN(clear_display)();
}
else
{
lastmode = current_vp->drawmode;
/* Invert the INVERSEVID bit and set basic mode to SOLID */
current_vp->drawmode = (~lastmode & DRMODE_INVERSEVID) |
DRMODE_SOLID;
LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
current_vp->drawmode = lastmode;
LCDFN(scroll_stop)(current_vp);
}
}
/* Set a single pixel */
void LCDFN(drawpixel)(int x, int y)
{
if (((unsigned)x < (unsigned)current_vp->width) &&
((unsigned)y < (unsigned)current_vp->height))
LCDFN(pixelfuncs)[current_vp->drawmode](current_vp->x+x, current_vp->y+y);
}
/* Draw a line */
void LCDFN(drawline)(int x1, int y1, int x2, int y2)
{
int numpixels;
int i;
int deltax, deltay;
int d, dinc1, dinc2;
int x, xinc1, xinc2;
int y, yinc1, yinc2;
LCDFN(pixelfunc_type) *pfunc = LCDFN(pixelfuncs)[current_vp->drawmode];
deltax = abs(x2 - x1);
if (deltax == 0)
{
DEBUGF(LCDNAME "drawline() called for vertical line - optimisation.\n");
LCDFN(vline)(x1, y1, y2);
return;
}
deltay = abs(y2 - y1);
if (deltay == 0)
{
DEBUGF(LCDNAME "drawline() called for horizontal line - optimisation.\n");
LCDFN(hline)(x1, x2, y1);
return;
}
xinc2 = 1;
yinc2 = 1;
if (deltax >= deltay)
{
numpixels = deltax;
d = 2 * deltay - deltax;
dinc1 = deltay * 2;
dinc2 = (deltay - deltax) * 2;
xinc1 = 1;
yinc1 = 0;
}
else
{
numpixels = deltay;
d = 2 * deltax - deltay;
dinc1 = deltax * 2;
dinc2 = (deltax - deltay) * 2;
xinc1 = 0;
yinc1 = 1;
}
numpixels++; /* include endpoints */
if (x1 > x2)
{
xinc1 = -xinc1;
xinc2 = -xinc2;
}
if (y1 > y2)
{
yinc1 = -yinc1;
yinc2 = -yinc2;
}
x = x1;
y = y1;
for (i = 0; i < numpixels; i++)
{
if (((unsigned)x < (unsigned)current_vp->width) &&
((unsigned)y < (unsigned)current_vp->height))
pfunc(current_vp->x + x, current_vp->y + y);
if (d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
/* Draw a horizontal line (optimised) */
void LCDFN(hline)(int x1, int x2, int y)
{
int x;
int width;
FBFN(data) *dst, *dst_end;
unsigned mask;
LCDFN(blockfunc_type) *bfunc;
/* direction flip */
if (x2 < x1)
{
x = x1;
x1 = x2;
x2 = x;
}
/* nothing to draw? */
if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width)
|| (x2 < 0))
return;
/* clipping */
if (x1 < 0)
x1 = 0;
if (x2 >= current_vp->width)
x2 = current_vp->width-1;
width = x2 - x1 + 1;
/* adjust x1 and y to viewport */
x1 += current_vp->x;
y += current_vp->y;
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
dst = &LCDFN(framebuffer)[y>>3][x1];
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;
}
/* nothing to draw? */
if (((unsigned)x >= (unsigned)current_vp->width) || (y1 >= current_vp->height)
|| (y2 < 0))
return;
/* clipping */
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;
bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
dst = &LCDFN(framebuffer)[y1>>3][x];
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;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
return;
/* clipping */
if (x < 0)
{
width += x;
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 (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 = &LCDFN(framebuffer)[y>>3][x];
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;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
(y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
return;
/* clipping */
if (x < 0)
{
width += x;
src_x -= x;
x = 0;
}
if (y < 0)
{
height += y;
src_y -= y;
y = 0;
}
if (x + width > current_vp->width)
width = current_vp->width - x;
if (y + height > current_vp->height)
height = current_vp->height - y;
/* adjust for viewport */
x += current_vp->x;
y += current_vp->y;
src += stride * (src_y >> 3) + src_x; /* move starting point */
src_y &= 7;
y -= src_y;
dst = &LCDFN(framebuffer)[y>>3][x];
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;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
|| (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
return;
/* clipping */
if (x < 0)
{
width += x;
src_x -= x;
x = 0;
}
if (y < 0)
{
height += y;
src_y -= y;
y = 0;
}
if (x + width > current_vp->width)
width = current_vp->width - x;
if (y + height > current_vp->height)
height = current_vp->height - y;
/* adjust for viewport */
x += current_vp->x;
y += current_vp->y;
src += stride * (src_y >> 3) + src_x; /* move starting point */
src_y &= 7;
y -= src_y;
dst = &LCDFN(framebuffer)[y>>3][x];
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)
{
LCDFN(bitmap_part)(src, 0, 0, width, x, y, width, height);
}
/* put a string at a given pixel position, skipping first ofs pixel columns */
static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str)
{
unsigned short ch;
unsigned short *ucs;
struct font* pf = font_get(current_vp->font);
ucs = bidi_l2v(str, 1);
while ((ch = *ucs++) != 0 && x < current_vp->width)
{
int width;
const unsigned char *bits;
/* get proportional width and glyph bits */
width = font_get_width(pf, ch);
if (ofs > width)
{
ofs -= width;
continue;
}
bits = font_get_bits(pf, ch);
LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x, y, width - ofs,
pf->height);
x += width - ofs;
ofs = 0;
}
}
/* put a string at a given pixel position */
void LCDFN(putsxy)(int x, int y, const unsigned char *str)
{
LCDFN(putsxyofs)(x, y, 0, str);
}
/*** line oriented text output ***/
/* put a string at a given char position */
void LCDFN(puts)(int x, int y, const unsigned char *str)
{
LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0);
}
void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style)
{
LCDFN(puts_style_offset)(x, y, str, style, 0);
}
void LCDFN(puts_offset)(int x, int y, const unsigned char *str, int offset)
{
LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, offset);
}
/* put a string at a given char position, style, and pixel position,
* skipping first offset pixel columns */
void LCDFN(puts_style_offset)(int x, int y, const unsigned char *str,
int style, int offset)
{
int xpos,ypos,w,h,xrect;
int lastmode = current_vp->drawmode;
/* make sure scrolling is turned off on the line we are updating */
LCDFN(scroll_stop_line)(current_vp, y);
if(!str || !str[0])
return;
LCDFN(getstringsize)(str, &w, &h);
xpos = x*w / utf8length((char *)str);
ypos = y*h;
current_vp->drawmode = (style & STYLE_INVERT) ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
LCDFN(putsxyofs)(xpos, ypos, offset, str);
current_vp->drawmode ^= DRMODE_INVERSEVID;
xrect = xpos + MAX(w - offset, 0);
LCDFN(fillrect)(xrect, ypos, current_vp->width - xrect, h);
current_vp->drawmode = lastmode;
}
/*** scrolling ***/
void LCDFN(puts_scroll)(int x, int y, const unsigned char *string)
{
LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT);
}
void LCDFN(puts_scroll_style)(int x, int y, const unsigned char *string, int style)
{
LCDFN(puts_scroll_style_offset)(x, y, string, style, 0);
}
void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string, int offset)
{
LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset);
}
void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string,
int style, int offset)
{
struct scrollinfo* s;
int w, h;
if ((unsigned)y >= (unsigned)current_vp->height)
return;
/* remove any previously scrolling line at the same location */
LCDFN(scroll_stop_line)(current_vp, y);
if (LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES)) return;
s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines];
s->start_tick = current_tick + LCDFN(scroll_info).delay;
s->style = style;
if (style & STYLE_INVERT) {
LCDFN(puts_style_offset)(x,y,string,STYLE_INVERT,offset);
}
else
LCDFN(puts_offset)(x,y,string,offset);
LCDFN(getstringsize)(string, &w, &h);
if (current_vp->width - x * 8 < w) {
/* prepare scroll line */
char *end;
memset(s->line, 0, sizeof s->line);
strcpy(s->line, string);
/* get width */
s->width = LCDFN(getstringsize)(s->line, &w, &h);
/* scroll bidirectional or forward only depending on the string
width */
if ( LCDFN(scroll_info).bidir_limit ) {
s->bidir = s->width < (current_vp->width) *
(100 + LCDFN(scroll_info).bidir_limit) / 100;
}
else
s->bidir = false;
if (!s->bidir) { /* add spaces if scrolling in the round */
strcat(s->line, " ");
/* get new width incl. spaces */
s->width = LCDFN(getstringsize)(s->line, &w, &h);
}
end = strchr(s->line, '\0');
strlcpy(end, (char *)string, current_vp->width/2);
s->vp = current_vp;
s->y = y;
s->len = utf8length((char *)string);
s->offset = offset;
s->startx = x * s->width / s->len;
s->backward = false;
LCDFN(scroll_info).lines++;
}
}
void LCDFN(scroll_fn)(void)
{
struct font* pf;
struct scrollinfo* s;
int index;
int xpos, ypos;
int lastmode;
struct viewport* old_vp = current_vp;
for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) {
s = &LCDFN(scroll_info).scroll[index];
/* check pause */
if (TIME_BEFORE(current_tick, s->start_tick))
continue;
LCDFN(set_viewport)(s->vp);
if (s->backward)
s->offset -= LCDFN(scroll_info).step;
else
s->offset += LCDFN(scroll_info).step;
pf = font_get(current_vp->font);
xpos = s->startx;
ypos = s->y * pf->height;
if (s->bidir) { /* scroll bidirectional */
if (s->offset <= 0) {
/* at beginning of line */
s->offset = 0;
s->backward = false;
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
}
if (s->offset >= s->width - (current_vp->width - xpos)) {
/* at end of line */
s->offset = s->width - (current_vp->width - xpos);
s->backward = true;
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
}
}
else {
/* scroll forward the whole time */
if (s->offset >= s->width)
s->offset %= s->width;
}
lastmode = current_vp->drawmode;
current_vp->drawmode = (s->style&STYLE_INVERT) ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
LCDFN(putsxyofs)(xpos, ypos, s->offset, s->line);
current_vp->drawmode = lastmode;
LCDFN(update_viewport_rect)(xpos, ypos,
current_vp->width - xpos, pf->height);
}
LCDFN(set_viewport)(old_vp);
}
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