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rockbox/firmware/drivers/lcd-2bit-vert.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2004 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "cpu.h"
#include "kernel.h"
#include "lcd.h"
#include "thread.h"
#include <string.h>
#include <stdlib.h>
#include "file.h"
#include "debug.h"
#include "font.h"
#include "rbunicode.h"
#include "bidi.h"
/*** definitions ***/
#define SCROLLABLE_LINES ((LCD_HEIGHT+4)/5 < 32 ? (LCD_HEIGHT+4)/5 : 32)
/*** globals ***/
fb_data lcd_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH] IBSS_ATTR;
const unsigned char lcd_dibits[16] ICONST_ATTR = {
0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F,
0xC0, 0xC3, 0xCC, 0xCF, 0xF0, 0xF3, 0xFC, 0xFF
};
static const unsigned char pixmask[4] ICONST_ATTR = {
0x03, 0x0C, 0x30, 0xC0
};
static fb_data* lcd_backdrop = NULL;
static long lcd_backdrop_offset IDATA_ATTR = 0;
static unsigned fg_pattern IDATA_ATTR = 0xFF; /* initially black */
static unsigned bg_pattern IDATA_ATTR = 0x00; /* initially white */
static int drawmode = DRMODE_SOLID;
static int xmargin = 0;
static int ymargin = 0;
static int curfont = FONT_SYSFIXED;
/* scrolling */
static volatile int scrolling_lines=0; /* Bitpattern of which lines are scrolling */
static void scroll_thread(void);
static long scroll_stack[DEFAULT_STACK_SIZE/sizeof(long)];
static const char scroll_name[] = "scroll";
static int scroll_ticks = 12; /* # of ticks between updates*/
static int scroll_delay = HZ/2; /* ticks delay before start */
static int scroll_step = 6; /* pixels per scroll step */
static int bidir_limit = 50; /* percent */
static struct scrollinfo scroll[SCROLLABLE_LINES];
static const char scroll_tick_table[16] = {
/* Hz values:
1, 1.25, 1.55, 2, 2.5, 3.12, 4, 5, 6.25, 8.33, 10, 12.5, 16.7, 20, 25, 33 */
100, 80, 64, 50, 40, 32, 25, 20, 16, 12, 10, 8, 6, 5, 4, 3
};
/* LCD init */
void lcd_init(void)
{
lcd_clear_display();
/* Call device specific init */
lcd_init_device();
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name IF_PRIO(, PRIORITY_USER_INTERFACE)
IF_COP(, CPU, false));
}
/*** parameter handling ***/
void lcd_set_drawmode(int mode)
{
drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
}
int lcd_get_drawmode(void)
{
return drawmode;
}
void lcd_set_foreground(unsigned brightness)
{
fg_pattern = 0x55 * (~brightness & 3);
}
unsigned lcd_get_foreground(void)
{
return ~fg_pattern & 3;
}
void lcd_set_background(unsigned brightness)
{
bg_pattern = 0x55 * (~brightness & 3);
}
unsigned lcd_get_background(void)
{
return ~bg_pattern & 3;
}
void lcd_set_drawinfo(int mode, unsigned fg_brightness, unsigned bg_brightness)
{
lcd_set_drawmode(mode);
lcd_set_foreground(fg_brightness);
lcd_set_background(bg_brightness);
}
void lcd_setmargins(int x, int y)
{
xmargin = x;
ymargin = y;
}
int lcd_getxmargin(void)
{
return xmargin;
}
int lcd_getymargin(void)
{
return ymargin;
}
void lcd_setfont(int newfont)
{
curfont = newfont;
}
int lcd_getstringsize(const unsigned char *str, int *w, int *h)
{
return font_getstringsize(str, w, h, curfont);
}
/*** low-level drawing functions ***/
static void setpixel(int x, int y)
{
unsigned mask = pixmask[y & 3];
fb_data *address = &lcd_framebuffer[y>>2][x];
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask);
}
static void clearpixel(int x, int y)
{
unsigned mask = pixmask[y & 3];
fb_data *address = &lcd_framebuffer[y>>2][x];
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask);
}
static void clearimgpixel(int x, int y)
{
unsigned mask = pixmask[y & 3];
fb_data *address = &lcd_framebuffer[y>>2][x];
unsigned data = *address;
*address = data ^ ((data ^ *(address + lcd_backdrop_offset)) & mask);
}
static void flippixel(int x, int y)
{
unsigned mask = pixmask[y & 3];
fb_data *address = &lcd_framebuffer[y>>2][x];
*address ^= mask;
}
static void nopixel(int x, int y)
{
(void)x;
(void)y;
}
lcd_pixelfunc_type* const lcd_pixelfuncs_bgcolor[8] = {
flippixel, nopixel, setpixel, setpixel,
nopixel, clearpixel, nopixel, clearpixel
};
lcd_pixelfunc_type* const lcd_pixelfuncs_backdrop[8] = {
flippixel, nopixel, setpixel, setpixel,
nopixel, clearimgpixel, nopixel, clearimgpixel
};
lcd_pixelfunc_type* const * lcd_pixelfuncs = lcd_pixelfuncs_bgcolor;
/* 'mask' and 'bits' contain 2 bits per pixel */
static void flipblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void flipblock(fb_data *address, unsigned mask, unsigned bits)
{
*address ^= bits & mask;
}
static void bgblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bgblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask & ~bits);
}
static void bgimgblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bgimgblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ *(address + lcd_backdrop_offset)) & mask & ~bits);
}
static void fgblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void fgblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask & bits);
}
static void solidblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidblock(fb_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 solidimgblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidimgblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
unsigned bgp = *(address + lcd_backdrop_offset);
bits = bgp ^ ((bgp ^ fg_pattern) & bits);
*address = data ^ ((data ^ bits) & mask);
}
static void flipinvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void flipinvblock(fb_data *address, unsigned mask, unsigned bits)
{
*address ^= ~bits & mask;
}
static void bginvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bginvblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ bg_pattern) & mask & bits);
}
static void bgimginvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bgimginvblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ *(address + lcd_backdrop_offset)) & mask & bits);
}
static void fginvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void fginvblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
*address = data ^ ((data ^ fg_pattern) & mask & ~bits);
}
static void solidinvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidinvblock(fb_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 solidimginvblock(fb_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidimginvblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
unsigned fgp = fg_pattern;
bits = fgp ^ ((fgp ^ *(address + lcd_backdrop_offset)) & bits);
*address = data ^ ((data ^ bits) & mask);
}
lcd_blockfunc_type* const lcd_blockfuncs_bgcolor[8] = {
flipblock, bgblock, fgblock, solidblock,
flipinvblock, bginvblock, fginvblock, solidinvblock
};
lcd_blockfunc_type* const lcd_blockfuncs_backdrop[8] = {
flipblock, bgimgblock, fgblock, solidimgblock,
flipinvblock, bgimginvblock, fginvblock, solidimginvblock
};
lcd_blockfunc_type* const * lcd_blockfuncs = lcd_blockfuncs_bgcolor;
void lcd_set_backdrop(fb_data* backdrop)
{
lcd_backdrop = backdrop;
if (backdrop)
{
lcd_backdrop_offset = (long)backdrop - (long)lcd_framebuffer;
lcd_pixelfuncs = lcd_pixelfuncs_backdrop;
lcd_blockfuncs = lcd_blockfuncs_backdrop;
}
else
{
lcd_backdrop_offset = 0;
lcd_pixelfuncs = lcd_pixelfuncs_bgcolor;
lcd_blockfuncs = lcd_blockfuncs_bgcolor;
}
}
fb_data* lcd_get_backdrop(void)
{
return lcd_backdrop;
}
static inline void setblock(fb_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
bits ^= data;
*address = data ^ (bits & mask);
}
/*** drawing functions ***/
/* Clear the whole display */
void lcd_clear_display(void)
{
if (drawmode & DRMODE_INVERSEVID)
{
memset(lcd_framebuffer, fg_pattern, sizeof lcd_framebuffer);
}
else
{
if (lcd_backdrop)
memcpy(lcd_framebuffer, lcd_backdrop, sizeof lcd_framebuffer);
else
memset(lcd_framebuffer, bg_pattern, sizeof lcd_framebuffer);
}
scrolling_lines = 0;
}
/* Set a single pixel */
void lcd_drawpixel(int x, int y)
{
if (((unsigned)x < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT))
lcd_pixelfuncs[drawmode](x, y);
}
/* Draw a line */
void lcd_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;
lcd_pixelfunc_type *pfunc = lcd_pixelfuncs[drawmode];
deltax = abs(x2 - x1);
deltay = abs(y2 - y1);
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 < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT))
pfunc(x, y);
if (d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
/* Draw a horizontal line (optimised) */
void lcd_hline(int x1, int x2, int y)
{
int x;
fb_data *dst, *dst_end;
unsigned mask;
lcd_blockfunc_type *bfunc;
/* direction flip */
if (x2 < x1)
{
x = x1;
x1 = x2;
x2 = x;
}
/* nothing to draw? */
if (((unsigned)y >= LCD_HEIGHT) || (x1 >= LCD_WIDTH) || (x2 < 0))
return;
/* clipping */
if (x1 < 0)
x1 = 0;
if (x2 >= LCD_WIDTH)
x2 = LCD_WIDTH-1;
bfunc = lcd_blockfuncs[drawmode];
dst = &lcd_framebuffer[y>>2][x1];
mask = pixmask[y & 3];
dst_end = dst + x2 - x1;
do
bfunc(dst++, mask, 0xFFu);
while (dst <= dst_end);
}
/* Draw a vertical line (optimised) */
void lcd_vline(int x, int y1, int y2)
{
int ny;
fb_data *dst;
unsigned mask, mask_bottom;
lcd_blockfunc_type *bfunc;
/* direction flip */
if (y2 < y1)
{
ny = y1;
y1 = y2;
y2 = ny;
}
/* nothing to draw? */
if (((unsigned)x >= LCD_WIDTH) || (y1 >= LCD_HEIGHT) || (y2 < 0))
return;
/* clipping */
if (y1 < 0)
y1 = 0;
if (y2 >= LCD_HEIGHT)
y2 = LCD_HEIGHT-1;
bfunc = lcd_blockfuncs[drawmode];
dst = &lcd_framebuffer[y1>>2][x];
ny = y2 - (y1 & ~3);
mask = 0xFFu << (2 * (y1 & 3));
mask_bottom = 0xFFu >> (2 * (~ny & 3));
for (; ny >= 4; ny -= 4)
{
bfunc(dst, mask, 0xFFu);
dst += LCD_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
bfunc(dst, mask, 0xFFu);
}
/* Draw a rectangular box */
void lcd_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;
lcd_vline(x, y, y2);
lcd_vline(x2, y, y2);
lcd_hline(x, x2, y);
lcd_hline(x, x2, y2);
}
/* Fill a rectangular area */
void lcd_fillrect(int x, int y, int width, int height)
{
int ny;
fb_data *dst, *dst_end;
unsigned mask, mask_bottom;
unsigned bits = 0;
lcd_blockfunc_type *bfunc;
bool fillopt = false;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_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 > LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
if (drawmode & DRMODE_INVERSEVID)
{
if ((drawmode & DRMODE_BG) && !lcd_backdrop)
{
fillopt = true;
bits = bg_pattern;
}
}
else
{
if (drawmode & DRMODE_FG)
{
fillopt = true;
bits = fg_pattern;
}
}
bfunc = lcd_blockfuncs[drawmode];
dst = &lcd_framebuffer[y>>2][x];
ny = height - 1 + (y & 3);
mask = 0xFFu << (2 * (y & 3));
mask_bottom = 0xFFu >> (2 * (~ny & 3));
for (; ny >= 4; ny -= 4)
{
if (fillopt && (mask == 0xFFu))
memset(dst, bits, width);
else
{
fb_data *dst_row = dst;
dst_end = dst_row + width;
do
bfunc(dst_row++, mask, 0xFFu);
while (dst_row < dst_end);
}
dst += LCD_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
if (fillopt && (mask == 0xFFu))
memset(dst, bits, width);
else
{
dst_end = dst + width;
do
bfunc(dst++, mask, 0xFFu);
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 lcd_mono_bitmap_part(const unsigned char *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
ICODE_ATTR;
void lcd_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;
fb_data *dst, *dst_end;
unsigned mask, mask_bottom;
lcd_blockfunc_type *bfunc;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_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 > LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
src += stride * (src_y >> 3) + src_x; /* move starting point */
src_y &= 7;
y -= src_y;
dst = &lcd_framebuffer[y>>2][x];
shift = y & 3;
ny = height - 1 + shift + src_y;
bfunc = lcd_blockfuncs[drawmode];
mask = 0xFFu << (shift + src_y);
mask_bottom = 0xFFu >> (~ny & 7);
if (shift == 0)
{
unsigned dmask1, dmask2, data;
for (; ny >= 8; ny -= 8)
{
const unsigned char *src_row = src;
fb_data *dst_row = dst + LCD_WIDTH;
dmask1 = lcd_dibits[mask&0x0F];
dmask2 = lcd_dibits[(mask>>4)&0x0F];
dst_end = dst_row + width;
if (dmask1 != 0)
{
do
{
data = *src_row++;
bfunc(dst_row - LCD_WIDTH, dmask1, lcd_dibits[data&0x0F]);
bfunc(dst_row++, dmask2, lcd_dibits[(data>>4)&0x0F]);
}
while (dst_row < dst_end);
}
else
{
do
bfunc(dst_row++, dmask2, lcd_dibits[((*src_row++)>>4)&0x0F]);
while (dst_row < dst_end);
}
src += stride;
dst += 2*LCD_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
dmask1 = lcd_dibits[mask&0x0F];
dmask2 = lcd_dibits[(mask>>4)&0x0F];
dst_end = dst + width;
if (dmask1 != 0)
{
if (dmask2 != 0)
{
do
{
data = *src++;
bfunc(dst, dmask1, lcd_dibits[data&0x0F]);
bfunc((dst++) + LCD_WIDTH, dmask2, lcd_dibits[(data>>4)&0x0F]);
}
while (dst < dst_end);
}
else
{
do
bfunc(dst++, dmask1, lcd_dibits[(*src++)&0x0F]);
while (dst < dst_end);
}
}
else
{
do
bfunc((dst++) + LCD_WIDTH, dmask2, lcd_dibits[((*src++)>>4)&0x0F]);
while (dst < dst_end);
}
}
else
{
dst_end = dst + width;
do
{
const unsigned char *src_col = src++;
fb_data *dst_col = dst++;
unsigned mask_col = mask;
unsigned data = 0;
for (y = ny; y >= 8; y -= 8)
{
data |= *src_col << shift;
if (mask_col & 0xFFu)
{
if (mask_col & 0x0F)
bfunc(dst_col, lcd_dibits[mask_col&0x0F], lcd_dibits[data&0x0F]);
bfunc(dst_col + LCD_WIDTH, lcd_dibits[(mask_col>>4)&0x0F],
lcd_dibits[(data>>4)&0x0F]);
mask_col = 0xFFu;
}
else
mask_col >>= 8;
src_col += stride;
dst_col += 2*LCD_WIDTH;
data >>= 8;
}
data |= *src_col << shift;
mask_bottom &= mask_col;
if (mask_bottom & 0x0F)
bfunc(dst_col, lcd_dibits[mask_bottom&0x0F], lcd_dibits[data&0x0F]);
if (mask_bottom & 0xF0)
bfunc(dst_col + LCD_WIDTH, lcd_dibits[(mask_bottom&0xF0)>>4],
lcd_dibits[(data>>4)&0x0F]);
}
while (dst < dst_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 native bitmap format:
*
* A bitmap contains two bits for every pixel. 00 = white, 01 = light grey,
* 10 = dark grey, 11 = black. 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..3, the second row defines pixel row 4..7 etc.
*
* This is the same as the internal lcd hw format. */
/* Draw a partial native bitmap */
void lcd_bitmap_part(const fb_data *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
ICODE_ATTR;
void lcd_bitmap_part(const fb_data *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
{
int shift, ny;
fb_data *dst, *dst_end;
unsigned mask, mask_bottom;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_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 > LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
src += stride * (src_y >> 2) + src_x; /* move starting point */
src_y &= 3;
y -= src_y;
dst = &lcd_framebuffer[y>>2][x];
shift = y & 3;
ny = height - 1 + shift + src_y;
mask = 0xFFu << (2 * (shift + src_y));
mask_bottom = 0xFFu >> (2 * (~ny & 3));
if (shift == 0)
{
for (; ny >= 4; ny -= 4)
{
if (mask == 0xFFu)
memcpy(dst, src, width);
else
{
const fb_data *src_row = src;
fb_data *dst_row = dst;
dst_end = dst_row + width;
do
setblock(dst_row++, mask, *src_row++);
while (dst_row < dst_end);
}
src += stride;
dst += LCD_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
if (mask == 0xFFu)
memcpy(dst, src, width);
else
{
dst_end = dst + width;
do
setblock(dst++, mask, *src++);
while (dst < dst_end);
}
}
else
{
shift *= 2;
dst_end = dst + width;
do
{
const fb_data *src_col = src++;
fb_data *dst_col = dst++;
unsigned mask_col = mask;
unsigned data = 0;
for (y = ny; y >= 4; y -= 4)
{
data |= *src_col << shift;
if (mask_col & 0xFFu)
{
setblock(dst_col, mask_col, data);
mask_col = 0xFFu;
}
else
mask_col >>= 8;
src_col += stride;
dst_col += LCD_WIDTH;
data >>= 8;
}
data |= *src_col << shift;
setblock(dst_col, mask_col & mask_bottom, data);
}
while (dst < dst_end);
}
}
/* 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, width, x, y, width, height);
}
/* put a string at a given pixel position, skipping first ofs pixel columns */
static void lcd_putsxyofs(int x, int y, int ofs, const unsigned char *str)
{
unsigned short ch;
unsigned short *ucs;
struct font* pf = font_get(curfont);
ucs = bidi_l2v(str, 1);
while ((ch = *ucs++) != 0 && x < LCD_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);
lcd_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 lcd_putsxy(int x, int y, const unsigned char *str)
{
lcd_putsxyofs(x, y, 0, str);
}
/*** line oriented text output ***/
/* put a string at a given char position */
void lcd_puts(int x, int y, const unsigned char *str)
{
lcd_puts_style_offset(x, y, str, STYLE_DEFAULT, 0);
}
void lcd_puts_style(int x, int y, const unsigned char *str, int style)
{
lcd_puts_style_offset(x, y, str, style, 0);
}
void lcd_puts_offset(int x, int y, const unsigned char *str, int offset)
{
lcd_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 lcd_puts_style_offset(int x, int y, const unsigned char *str,
int style, int offset)
{
int xpos,ypos,w,h,xrect;
int lastmode = drawmode;
/* make sure scrolling is turned off on the line we are updating */
scrolling_lines &= ~(1 << y);
if(!str || !str[0])
return;
lcd_getstringsize(str, &w, &h);
xpos = xmargin + x*w / utf8length((char *)str);
ypos = ymargin + y*h;
drawmode = (style & STYLE_INVERT) ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
lcd_putsxyofs(xpos, ypos, offset, str);
drawmode ^= DRMODE_INVERSEVID;
xrect = xpos + MAX(w - offset, 0);
lcd_fillrect(xrect, ypos, LCD_WIDTH - xrect, h);
drawmode = lastmode;
}
/*** scrolling ***/
/* Reverse the invert setting of the scrolling line (if any) at given char
position. Setting will go into affect next time line scrolls. */
void lcd_invertscroll(int x, int y)
{
struct scrollinfo* s;
(void)x;
if(y>=SCROLLABLE_LINES) return;
s = &scroll[y];
s->invert = !s->invert;
}
void lcd_stop_scroll(void)
{
scrolling_lines=0;
}
void lcd_scroll_speed(int speed)
{
scroll_ticks = scroll_tick_table[speed];
}
void lcd_scroll_step(int step)
{
scroll_step = step;
}
void lcd_scroll_delay(int ms)
{
scroll_delay = ms / (HZ / 10);
}
void lcd_bidir_scroll(int percent)
{
bidir_limit = percent;
}
void lcd_puts_scroll(int x, int y, const unsigned char *string)
{
lcd_puts_scroll_style(x, y, string, STYLE_DEFAULT);
}
void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style)
{
lcd_puts_scroll_style_offset(x, y, string, style, 0);
}
void lcd_puts_scroll_offset(int x, int y, const unsigned char *string, int offset)
{
lcd_puts_scroll_style_offset(x, y, string, STYLE_DEFAULT, offset);
}
void lcd_puts_scroll_style_offset(int x, int y, const unsigned char *string,
int style, int offset)
{
struct scrollinfo* s;
int w, h;
if(y>=SCROLLABLE_LINES) return;
s = &scroll[y];
s->start_tick = current_tick + scroll_delay;
s->invert = false;
if (style & STYLE_INVERT) {
s->invert = true;
lcd_puts_style_offset(x,y,string,STYLE_INVERT,offset);
}
else
lcd_puts_offset(x,y,string,offset);
lcd_getstringsize(string, &w, &h);
if (LCD_WIDTH - x * 8 - xmargin < w) {
/* prepare scroll line */
char *end;
memset(s->line, 0, sizeof s->line);
strcpy(s->line, (char *)string);
/* get width */
s->width = lcd_getstringsize((unsigned char *)s->line, &w, &h);
/* scroll bidirectional or forward only depending on the string
width */
if ( bidir_limit ) {
s->bidir = s->width < (LCD_WIDTH - xmargin) *
(100 + 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 = lcd_getstringsize((unsigned char *)s->line, &w, &h);
}
end = strchr(s->line, '\0');
strncpy(end, (char *)string, LCD_WIDTH/2);
s->len = utf8length((char *)string);
s->offset = offset;
s->startx = xmargin + x * s->width / s->len;
s->backward = false;
scrolling_lines |= (1<<y);
}
else
/* force a bit switch-off since it doesn't scroll */
scrolling_lines &= ~(1<<y);
}
static void scroll_thread(void)
{
struct font* pf;
struct scrollinfo* s;
int index;
int xpos, ypos;
int lastmode;
/* initialize scroll struct array */
scrolling_lines = 0;
while ( 1 ) {
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
/* really scroll? */
if ( !(scrolling_lines&(1<<index)) )
continue;
s = &scroll[index];
/* check pause */
if (TIME_BEFORE(current_tick, s->start_tick))
continue;
if (s->backward)
s->offset -= scroll_step;
else
s->offset += scroll_step;
pf = font_get(curfont);
xpos = s->startx;
ypos = ymargin + index * 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 + scroll_delay * 2;
}
if (s->offset >= s->width - (LCD_WIDTH - xpos)) {
/* at end of line */
s->offset = s->width - (LCD_WIDTH - xpos);
s->backward = true;
s->start_tick = current_tick + scroll_delay * 2;
}
}
else {
/* scroll forward the whole time */
if (s->offset >= s->width)
s->offset %= s->width;
}
lastmode = drawmode;
drawmode = s->invert ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
lcd_putsxyofs(xpos, ypos, s->offset, s->line);
drawmode = lastmode;
lcd_update_rect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
}
sleep(scroll_ticks);
}
}
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