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rockbox/firmware/drivers/lcd-h100-remote.c
Jens Arnold 29b83559cc Fixed a warning. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6847 a1c6a512-1295-4272-9138-f99709370657
2005-06-23 17:48:46 +00:00

1075 lines
26 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Richard S. La Charité III
*
* 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 "cpu.h"
#include "lcd.h"
#include "lcd-remote.h"
#include "kernel.h"
#include "thread.h"
#include <string.h>
#include <stdlib.h>
#include "file.h"
#include "debug.h"
#include "system.h"
#include "font.h"
/*** definitions ***/
#define LCD_REMOTE_CNTL_ADC_NORMAL 0xa0
#define LCD_REMOTE_CNTL_ADC_REVERSE 0xa1
#define LCD_REMOTE_CNTL_SHL_NORMAL 0xc0
#define LCD_REMOTE_CNTL_SHL_REVERSE 0xc8
#define LCD_REMOTE_CNTL_DISPLAY_ON_OFF 0xae
#define LCD_REMOTE_CNTL_ENTIRE_ON_OFF 0xa4
#define LCD_REMOTE_CNTL_REVERSE_ON_OFF 0xa6
#define LCD_REMOTE_CNTL_NOP 0xe3
#define LCD_REMOTE_CNTL_POWER_CONTROL 0x2b
#define LCD_REMOTE_CNTL_SELECT_REGULATOR 0x20
#define LCD_REMOTE_CNTL_SELECT_BIAS 0xa2
#define LCD_REMOTE_CNTL_SELECT_VOLTAGE 0x81
#define LCD_REMOTE_CNTL_INIT_LINE 0x40
#define LCD_REMOTE_CNTL_SET_PAGE_ADDRESS 0xB0
#define LCD_REMOTE_CNTL_HIGHCOL 0x10 /* Upper column address */
#define LCD_REMOTE_CNTL_LOWCOL 0x00 /* Lower column address */
#define CS_LO GPIO1_OUT &= ~0x00000004
#define CS_HI GPIO1_OUT |= 0x00000004
#define CLK_LO GPIO_OUT &= ~0x10000000
#define CLK_HI GPIO_OUT |= 0x10000000
#define DATA_LO GPIO1_OUT &= ~0x00040000
#define DATA_HI GPIO1_OUT |= 0x00040000
#define RS_LO GPIO_OUT &= ~0x00010000
#define RS_HI GPIO_OUT |= 0x00010000
/* delay loop */
#define DELAY do { int _x; for(_x=0;_x<3;_x++);} while (0)
#define SCROLLABLE_LINES 13
/*** globals ***/
unsigned char lcd_remote_framebuffer[LCD_REMOTE_HEIGHT/8][LCD_REMOTE_WIDTH]
#ifndef SIMULATOR
__attribute__ ((section(".idata")))
#endif
;
static int curfont = FONT_SYSFIXED;
static int xmargin = 0;
static int ymargin = 0;
#ifndef SIMULATOR
static int xoffset; /* needed for flip */
/* remote hotplug */
static int countdown; /* for remote plugging debounce */
static bool last_remote_status = false;
static bool init_remote = false; /* scroll thread should init lcd */
static bool remote_initialized = false;
/* cached settings values */
static bool cached_invert = false;
static bool cached_flip = false;
static int cached_contrast = 32;
static int cached_roll = 0;
#endif
/* All zeros and ones bitmaps for area filling */
static const unsigned char zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
static const unsigned char ones[8] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
/* scrolling */
static volatile int scrolling_lines=0; /* Bitpattern of which lines are scrolling */
#ifndef SIMULATOR
static void scroll_thread(void);
static long scroll_stack[DEFAULT_STACK_SIZE/sizeof(long)];
#endif
static const char scroll_name[] = "remote_scroll";
static char scroll_ticks = 12; /* # of ticks between updates*/
static int scroll_delay = HZ/2; /* ticks delay before start */
static char 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
};
/*** driver routines ***/
#ifndef SIMULATOR
void lcd_remote_backlight_on(void)
{
GPIO_OUT &= ~0x00000800;
}
void lcd_remote_backlight_off(void)
{
GPIO_OUT |= 0x00000800;
}
void lcd_remote_write_command(int cmd)
{
int i;
RS_LO;
CS_LO;
for (i = 0; i < 8; i++)
{
if (cmd & 0x80)
DATA_HI;
else
DATA_LO;
CLK_HI;
cmd <<= 1;
DELAY;
CLK_LO;
}
CS_HI;
}
void lcd_remote_write_data(const unsigned char* p_bytes, int count)
{
int i, j;
int data;
RS_HI;
CS_LO;
for (i = 0; i < count; i++)
{
data = p_bytes[i];
for (j = 0; j < 8; j++)
{
if (data & 0x80)
DATA_HI;
else
DATA_LO;
CLK_HI;
data <<= 1;
DELAY;
CLK_LO;
}
}
CS_HI;
}
void lcd_remote_write_command_ex(int cmd, int data)
{
int i;
CS_LO;
RS_LO;
for (i = 0; i < 8; i++)
{
if (cmd & 0x80)
DATA_HI;
else
DATA_LO;
CLK_HI;
cmd <<= 1;
DELAY;
CLK_LO;
}
for (i = 0; i < 8; i++)
{
if (data & 0x80)
DATA_HI;
else
DATA_LO;
CLK_HI;
data <<= 1;
DELAY;
CLK_LO;
}
CS_HI;
}
#endif /* !SIMULATOR */
/*** hardware configuration ***/
int lcd_remote_default_contrast(void)
{
return 32;
}
#ifndef SIMULATOR
void lcd_remote_powersave(bool on)
{
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | (on ? 0 : 1));
lcd_remote_write_command(LCD_REMOTE_CNTL_ENTIRE_ON_OFF | (on ? 1 : 0));
}
}
void lcd_remote_set_contrast(int val)
{
cached_contrast = val;
if (remote_initialized)
lcd_remote_write_command_ex(LCD_REMOTE_CNTL_SELECT_VOLTAGE, val);
}
void lcd_remote_set_invert_display(bool yesno)
{
cached_invert = yesno;
if (remote_initialized)
lcd_remote_write_command(LCD_REMOTE_CNTL_REVERSE_ON_OFF | yesno);
}
/* turn the display upside down (call lcd_remote_update() afterwards) */
void lcd_remote_set_flip(bool yesno)
{
cached_flip = yesno;
if (yesno)
{
xoffset = 0;
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_NORMAL);
lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_NORMAL);
}
}
else
{
xoffset = 132 - LCD_REMOTE_WIDTH;
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_REVERSE);
lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_REVERSE);
}
}
}
/* Rolls up the lcd display by the specified amount of lines.
* Lines that are rolled out over the top of the screen are
* rolled in from the bottom again. This is a hardware
* remapping only and all operations on the lcd are affected.
* ->
* @param int lines - The number of lines that are rolled.
* The value must be 0 <= pixels < LCD_REMOTE_HEIGHT. */
void lcd_remote_roll(int lines)
{
char data[2];
cached_roll = lines;
if (remote_initialized)
{
lines &= LCD_REMOTE_HEIGHT-1;
data[0] = lines & 0xff;
data[1] = lines >> 8;
lcd_remote_write_command(LCD_REMOTE_CNTL_INIT_LINE | 0x0); // init line
lcd_remote_write_data(data, 2);
}
}
/* The actual LCD init */
static void remote_lcd_init(void)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_BIAS | 0x0);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x5);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x6);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x7);
lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_REGULATOR | 0x4); // 0x4 Select regulator @ 5.0 (default);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_INIT_LINE | 0x0); // init line
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | 0x0); // page address
lcd_remote_write_command_ex(0x10, 0x00); // Column MSB + LSB
lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | 1);
remote_initialized = true;
lcd_remote_set_flip(cached_flip);
lcd_remote_set_contrast(cached_contrast);
lcd_remote_set_invert_display(cached_invert);
lcd_remote_roll(cached_roll);
}
/* Monitor remote hotswap */
static void remote_tick(void)
{
bool current_status;
current_status = ((GPIO_READ & 0x40000000) == 0);
/* Only report when the status has changed */
if (current_status != last_remote_status)
{
last_remote_status = current_status;
countdown = current_status ? HZ : 1;
}
else
{
/* Count down until it gets negative */
if (countdown >= 0)
countdown--;
if (countdown == 0)
{
if (current_status)
{
init_remote = true;
/* request init in scroll_thread */
}
else
{
CLK_LO;
CS_HI;
remote_initialized = false;
}
}
}
}
/* Initialise ports and kick off monitor */
void lcd_remote_init(void)
{
GPIO_FUNCTION |= 0x10010800; /* GPIO11: Backlight
GPIO16: RS
GPIO28: CLK */
GPIO1_FUNCTION |= 0x00040004; /* GPIO34: CS
GPIO50: Data */
GPIO_ENABLE |= 0x10010800;
GPIO1_ENABLE |= 0x00040004;
lcd_remote_clear_display();
tick_add_task(remote_tick);
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name);
}
/*** update functions ***/
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_remote_update(void) __attribute__ ((section (".icode")));
void lcd_remote_update(void)
{
int y;
if (!remote_initialized)
return;
/* Copy display bitmap to hardware */
for (y = 0; y < LCD_REMOTE_HEIGHT / 8; y++)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL | ((xoffset>>4) & 0xf));
lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | (xoffset & 0xf));
lcd_remote_write_data(lcd_remote_framebuffer[y], LCD_REMOTE_WIDTH);
}
}
/* Update a fraction of the display. */
void lcd_remote_update_rect(int, int, int, int) __attribute__ ((section (".icode")));
void lcd_remote_update_rect(int x_start, int y, int width, int height)
{
int ymax;
if (!remote_initialized)
return;
/* The Y coordinates have to work on even 8 pixel rows */
ymax = (y + height-1)/8;
y /= 8;
if(x_start + width > LCD_REMOTE_WIDTH)
width = LCD_REMOTE_WIDTH - x_start;
if (width <= 0)
return; /* nothing left to do, 0 is harmful to lcd_write_data() */
if(ymax >= LCD_REMOTE_HEIGHT/8)
ymax = LCD_REMOTE_HEIGHT/8-1;
/* Copy specified rectange bitmap to hardware */
for (; y <= ymax; y++)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL
| (((x_start+xoffset)>>4) & 0xf));
lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL
| ((x_start+xoffset) & 0xf));
lcd_remote_write_data(&lcd_remote_framebuffer[y][x_start], width);
}
}
#endif /* !SIMULATOR */
/*** parameter handling ***/
void lcd_remote_setmargins(int x, int y)
{
xmargin = x;
ymargin = y;
}
int lcd_remote_getxmargin(void)
{
return xmargin;
}
int lcd_remote_getymargin(void)
{
return ymargin;
}
void lcd_remote_setfont(int newfont)
{
curfont = newfont;
}
int lcd_remote_getstringsize(const unsigned char *str, int *w, int *h)
{
return font_getstringsize(str, w, h, curfont);
}
/*** drawing functions ***/
void lcd_remote_clear_display(void)
{
memset(lcd_remote_framebuffer, 0, sizeof lcd_remote_framebuffer);
}
/* Set a single pixel */
void lcd_remote_drawpixel(int x, int y)
{
REMOTE_DRAW_PIXEL(x,y);
}
/* Clear a single pixel */
void lcd_remote_clearpixel(int x, int y)
{
REMOTE_CLEAR_PIXEL(x,y);
}
/* Invert a single pixel */
void lcd_remote_invertpixel(int x, int y)
{
REMOTE_INVERT_PIXEL(x,y);
}
void lcd_remote_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;
deltax = abs(x2 - x1);
deltay = abs(y2 - y1);
if(deltax >= deltay)
{
numpixels = deltax;
d = 2 * deltay - deltax;
dinc1 = deltay * 2;
dinc2 = (deltay - deltax) * 2;
xinc1 = 1;
xinc2 = 1;
yinc1 = 0;
yinc2 = 1;
}
else
{
numpixels = deltay;
d = 2 * deltax - deltay;
dinc1 = deltax * 2;
dinc2 = (deltax - deltay) * 2;
xinc1 = 0;
xinc2 = 1;
yinc1 = 1;
yinc2 = 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++)
{
REMOTE_DRAW_PIXEL(x,y);
if(d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
void lcd_remote_clearline(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;
deltax = abs(x2 - x1);
deltay = abs(y2 - y1);
if(deltax >= deltay)
{
numpixels = deltax;
d = 2 * deltay - deltax;
dinc1 = deltay * 2;
dinc2 = (deltay - deltax) * 2;
xinc1 = 1;
xinc2 = 1;
yinc1 = 0;
yinc2 = 1;
}
else
{
numpixels = deltay;
d = 2 * deltax - deltay;
dinc1 = deltax * 2;
dinc2 = (deltax - deltay) * 2;
xinc1 = 0;
xinc2 = 1;
yinc1 = 1;
yinc2 = 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++)
{
REMOTE_CLEAR_PIXEL(x,y);
if(d < 0)
{
d += dinc1;
x += xinc1;
y += yinc1;
}
else
{
d += dinc2;
x += xinc2;
y += yinc2;
}
}
}
void lcd_remote_drawrect(int x, int y, int nx, int ny)
{
int i;
if (x > LCD_REMOTE_WIDTH)
{
return;
}
if (y > LCD_REMOTE_HEIGHT)
{
return;
}
if (x + nx > LCD_REMOTE_WIDTH)
{
nx = LCD_REMOTE_WIDTH - x;
}
if (y + ny > LCD_REMOTE_HEIGHT)
{
ny = LCD_REMOTE_HEIGHT - y;
}
/* vertical lines */
for (i = 0; i < ny; i++)
{
REMOTE_DRAW_PIXEL(x, (y + i));
REMOTE_DRAW_PIXEL((x + nx - 1), (y + i));
}
/* horizontal lines */
for (i = 0; i < nx; i++)
{
REMOTE_DRAW_PIXEL((x + i),y);
REMOTE_DRAW_PIXEL((x + i),(y + ny - 1));
}
}
/* Clear a rectangular area at (x, y), size (nx, ny) */
void lcd_remote_clearrect(int x, int y, int nx, int ny)
{
int i;
for (i = 0; i < nx; i++)
lcd_remote_bitmap(zeros, x+i, y, 1, ny, true);
}
/* Fill a rectangular area at (x, y), size (nx, ny) */
void lcd_remote_fillrect(int x, int y, int nx, int ny)
{
int i;
for (i = 0; i < nx; i++)
lcd_remote_bitmap(ones, x+i, y, 1, ny, true);
}
/* Invert a rectangular area at (x, y), size (nx, ny) */
void lcd_remote_invertrect(int x, int y, int nx, int ny)
{
int i, j;
if (x > LCD_REMOTE_WIDTH)
return;
if (y > LCD_REMOTE_HEIGHT)
return;
if (x + nx > LCD_REMOTE_WIDTH)
nx = LCD_REMOTE_WIDTH - x;
if (y + ny > LCD_REMOTE_HEIGHT)
ny = LCD_REMOTE_HEIGHT - y;
for (i = 0; i < nx; i++)
for (j = 0; j < ny; j++)
REMOTE_INVERT_PIXEL((x + i), (y + j));
}
void lcd_remote_bitmap(const unsigned char *src, int x, int y, int nx, int ny,
bool clear) __attribute__ ((section (".icode")));
void lcd_remote_bitmap(const unsigned char *src, int x, int y, int nx, int ny,
bool clear)
{
const unsigned char *src_col;
unsigned char *dst, *dst_col;
unsigned int data, mask1, mask2, mask3, mask4;
int stride, shift;
if (((unsigned) x >= LCD_REMOTE_WIDTH) || ((unsigned) y >= LCD_REMOTE_HEIGHT))
{
return;
}
stride = nx; /* otherwise right-clipping will destroy the image */
if (((unsigned) (x + nx)) >= LCD_REMOTE_WIDTH)
{
nx = LCD_REMOTE_WIDTH - x;
}
if (((unsigned) (y + ny)) >= LCD_REMOTE_HEIGHT)
{
ny = LCD_REMOTE_HEIGHT - y;
}
dst = &lcd_remote_framebuffer[y >> 3][x];
shift = y & 7;
if (!shift && clear) /* shortcut for byte aligned match with clear */
{
while (ny >= 8) /* all full rows */
{
memcpy(dst, src, nx);
src += stride;
dst += LCD_REMOTE_WIDTH;
ny -= 8;
}
if (ny == 0) /* nothing left to do? */
{
return;
}
/* last partial row to do by default routine */
}
ny += shift;
/* Calculate bit masks */
mask4 = ~(0xfe << ((ny-1) & 7)); /* data mask for last partial row */
if (clear)
{
mask1 = ~(0xff << shift); /* clearing of first partial row */
mask2 = 0; /* clearing of intermediate (full) rows */
mask3 = ~mask4; /* clearing of last partial row */
if (ny <= 8)
{
mask3 |= mask1;
}
}
else
{
mask1 = mask2 = mask3 = 0xff;
}
/* Loop for each column */
for (x = 0; x < nx; x++)
{
src_col = src++;
dst_col = dst++;
data = 0;
y = 0;
if (ny > 8)
{
/* First partial row */
data = *src_col << shift;
*dst_col = (*dst_col & mask1) | data;
src_col += stride;
dst_col += LCD_REMOTE_WIDTH;
data >>= 8;
/* Intermediate rows */
for (y = 8; y < ny-8; y += 8)
{
data |= *src_col << shift;
*dst_col = (*dst_col & mask2) | data;
src_col += stride;
dst_col += LCD_REMOTE_WIDTH;
data >>= 8;
}
}
/* Last partial row */
if (y + shift < ny)
{
data |= *src_col << shift;
}
*dst_col = (*dst_col & mask3) | (data & mask4);
}
}
/* put a string at a given pixel position, skipping first ofs pixel columns */
static void lcd_remote_putsxyofs(int x, int y, int ofs, const unsigned char *str)
{
int ch;
struct font* pf = font_get(curfont);
while ((ch = *str++) != '\0' && x < LCD_REMOTE_WIDTH)
{
int gwidth, width;
/* check input range */
if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
ch = pf->defaultchar;
ch -= pf->firstchar;
/* get proportional width and glyph bits */
gwidth = pf->width ? pf->width[ch] : pf->maxwidth;
width = MIN (gwidth, LCD_REMOTE_WIDTH - x);
if (ofs != 0)
{
if (ofs > width)
{
ofs -= width;
continue;
}
width -= ofs;
}
if (width > 0)
{
unsigned int i;
const unsigned char* bits = pf->bits +
(pf->offset ? pf->offset[ch]
: ((pf->height + 7) / 8 * pf->maxwidth * ch));
if (ofs != 0)
{
for (i = 0; i < pf->height; i += 8)
{
lcd_remote_bitmap (bits + ofs, x, y + i, width,
MIN(8, pf->height - i), true);
bits += gwidth;
}
}
else
lcd_remote_bitmap ((unsigned char*) bits, x, y, gwidth,
pf->height, true);
x += width;
}
ofs = 0;
}
}
/* put a string at a given pixel position */
void lcd_remote_putsxy(int x, int y, const unsigned char *str)
{
lcd_remote_putsxyofs(x, y, 0, str);
}
/*** line oriented text output ***/
/* put a string at a given char position */
void lcd_remote_puts(int x, int y, const unsigned char *str)
{
lcd_remote_puts_style(x, y, str, STYLE_DEFAULT);
}
void lcd_remote_puts_style(int x, int y, const unsigned char *str, int style)
{
int xpos,ypos,w,h;
/* make sure scrolling is turned off on the line we are updating */
//scrolling_lines &= ~(1 << y);
if(!str || !str[0])
return;
lcd_remote_getstringsize(str, &w, &h);
xpos = xmargin + x*w / strlen(str);
ypos = ymargin + y*h;
lcd_remote_putsxy(xpos, ypos, str);
lcd_remote_clearrect(xpos + w, ypos, LCD_REMOTE_WIDTH - (xpos + w), h);
if (style & STYLE_INVERT)
lcd_remote_invertrect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, h);
}
/*** 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_remote_invertscroll(int x, int y)
{
struct scrollinfo* s;
(void)x;
s = &scroll[y];
s->invert = !s->invert;
}
void lcd_remote_stop_scroll(void)
{
scrolling_lines=0;
}
void lcd_remote_scroll_speed(int speed)
{
scroll_ticks = scroll_tick_table[speed];
}
void lcd_remote_scroll_step(int step)
{
scroll_step = step;
}
void lcd_remote_scroll_delay(int ms)
{
scroll_delay = ms / (HZ / 10);
}
void lcd_remote_bidir_scroll(int percent)
{
bidir_limit = percent;
}
void lcd_remote_puts_scroll(int x, int y, const unsigned char *string)
{
lcd_remote_puts_scroll_style(x, y, string, STYLE_DEFAULT);
}
void lcd_remote_puts_scroll_style(int x, int y, const unsigned char *string, int style)
{
struct scrollinfo* s;
int w, h;
s = &scroll[y];
s->start_tick = current_tick + scroll_delay;
s->invert = false;
if (style & STYLE_INVERT) {
s->invert = true;
lcd_remote_puts_style(x,y,string,STYLE_INVERT);
}
else
lcd_remote_puts(x,y,string);
lcd_remote_getstringsize(string, &w, &h);
if (LCD_REMOTE_WIDTH - x * 8 - xmargin < w) {
/* prepare scroll line */
char *end;
memset(s->line, 0, sizeof s->line);
strcpy(s->line, string);
/* get width */
s->width = lcd_remote_getstringsize(s->line, &w, &h);
/* scroll bidirectional or forward only depending on the string
width */
if ( bidir_limit ) {
s->bidir = s->width < (LCD_REMOTE_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_remote_getstringsize(s->line, &w, &h);
}
end = strchr(s->line, '\0');
strncpy(end, string, LCD_REMOTE_WIDTH/2);
s->len = strlen(string);
s->offset = 0;
s->startx = x;
s->backward = false;
scrolling_lines |= (1<<y);
}
else
/* force a bit switch-off since it doesn't scroll */
scrolling_lines &= ~(1<<y);
}
#ifndef SIMULATOR
static void scroll_thread(void)
{
struct font* pf;
struct scrollinfo* s;
int index;
int xpos, ypos;
/* initialize scroll struct array */
scrolling_lines = 0;
while ( 1 ) {
if (init_remote) /* request to initialize the remote lcd */
{
init_remote = false; /* clear request */
remote_lcd_init();
lcd_remote_update();
}
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 = xmargin + s->startx * s->width / s->len;
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_REMOTE_WIDTH - xpos)) {
/* at end of line */
s->offset = s->width - (LCD_REMOTE_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;
}
lcd_remote_clearrect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, pf->height);
lcd_remote_putsxyofs(xpos, ypos, s->offset, s->line);
if (s->invert)
lcd_remote_invertrect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, pf->height);
lcd_remote_update_rect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, pf->height);
}
sleep(scroll_ticks);
}
}
#endif /* SIMULATOR */
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