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rockbox/firmware/drivers/lcd-h100-remote.c
Miika Pekkarinen cabfbb3556 Fixed the line scrolling not always being smooth. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11044 a1c6a512-1295-4272-9138-f99709370657
2006-09-25 12:45:14 +00:00

1502 lines
41 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"
#include "rbunicode.h"
#include "bidi.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 and_l(~0x00000004, &GPIO1_OUT)
#define CS_HI or_l(0x00000004, &GPIO1_OUT)
#define CLK_LO and_l(~0x10000000, &GPIO_OUT)
#define CLK_HI or_l(0x10000000, &GPIO_OUT)
#define DATA_LO and_l(~0x00040000, &GPIO1_OUT)
#define DATA_HI or_l(0x00040000, &GPIO1_OUT)
#define RS_LO and_l(~0x00010000, &GPIO_OUT)
#define RS_HI or_l(0x00010000, &GPIO_OUT)
#define SCROLLABLE_LINES 13
/*** globals ***/
fb_remote_data lcd_remote_framebuffer[LCD_REMOTE_HEIGHT/8][LCD_REMOTE_WIDTH]
IBSS_ATTR;
static int drawmode = DRMODE_SOLID;
static int xmargin = 0;
static int ymargin = 0;
static int curfont = FONT_SYSFIXED;
#define LCD_REMOTE_DEFAULT_CONTRAST 42;
#ifndef SIMULATOR
static int xoffset; /* needed for flip */
/* timeout counter for deasserting /CS after access, <0 means not counting */
static int cs_countdown IDATA_ATTR = 0;
#define CS_TIMEOUT (HZ/10)
#ifdef HAVE_REMOTE_LCD_TICKING
/* If set to true, will prevent "ticking" to headphones. */
static bool emireduce = false;
static int byte_delay = 0;
#endif
/* remote hotplug */
static struct event_queue remote_scroll_queue;
#define REMOTE_INIT_LCD 1
#define REMOTE_DEINIT_LCD 2
static bool remote_initialized = false;
static int _remote_type = REMOTETYPE_UNPLUGGED;
/* cached settings values */
static bool cached_invert = false;
static bool cached_flip = false;
static int cached_contrast = LCD_REMOTE_DEFAULT_CONTRAST;
#endif
/* 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[] = "remote_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
};
/*** driver routines ***/
#ifndef SIMULATOR
#ifdef HAVE_REMOTE_LCD_TICKING
static inline void _byte_delay(int delay)
{
asm (
"move.l %[dly], %%d0 \n"
"ble.s 2f \n"
"1: \n"
"subq.l #1, %%d0 \n"
"bne.s 1b \n"
"2: \n"
: /* outputs */
: /* inputs */
[dly]"d"(delay)
: /* clobbers */
"d0"
);
}
#endif /* HAVE_REMOTE_LCD_TICKING */
/* Standard low-level byte writer. Requires CLK low on entry */
static inline void _write_byte(unsigned data)
{
asm volatile (
"move.l (%[gpo1]), %%d0 \n" /* Get current state of data line */
"and.l %[dbit], %%d0 \n"
"beq.s 1f \n" /* and set it as previous-state bit */
"bset #8, %[data] \n"
"1: \n"
"move.l %[data], %%d0 \n" /* Compute the 'bit derivative', i.e. a value */
"lsr.l #1, %%d0 \n" /* with 1's where the data changes from the */
"eor.l %%d0, %[data] \n" /* previous state, and 0's where it doesn't */
"swap %[data] \n" /* Shift data to upper byte */
"lsl.l #8, %[data] \n"
"lsl.l #1,%[data] \n" /* Shift out MSB */
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n" /* 1: flip DATA */
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n" /* Flip CLK */
"eor.l %[cbit], (%[gpo0]) \n" /* Flip CLK */
"lsl.l #1,%[data] \n" /* ..unrolled.. */
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], (%[gpo1]) \n"
"1: \n"
"eor.l %[cbit], (%[gpo0]) \n"
"eor.l %[cbit], (%[gpo0]) \n"
: /* outputs */
[data]"+d"(data)
: /* inputs */
[gpo0]"a"(&GPIO_OUT),
[cbit]"d"(0x10000000),
[gpo1]"a"(&GPIO1_OUT),
[dbit]"d"(0x00040000)
: /* clobbers */
"d0"
);
}
/* Fast low-level byte writer. Don't use with high CPU clock.
* Requires CLK low on entry */
static inline void _write_fast(unsigned data)
{
asm volatile (
"move.w %%sr,%%d3 \n" /* Get current interrupt level */
"move.w #0x2700,%%sr \n" /* Disable interrupts */
"move.l (%[gpo1]), %%d0 \n" /* Get current state of data port */
"move.l %%d0, %%d1 \n"
"and.l %[dbit], %%d1 \n" /* Check current state of data line */
"beq.s 1f \n" /* and set it as previous-state bit */
"bset #8, %[data] \n"
"1: \n"
"move.l %[data], %%d1 \n" /* Compute the 'bit derivative', i.e. a value */
"lsr.l #1, %%d1 \n" /* with 1's where the data changes from the */
"eor.l %%d1, %[data] \n" /* previous state, and 0's where it doesn't */
"swap %[data] \n" /* Shift data to upper byte */
"lsl.l #8, %[data] \n"
"move.l (%[gpo0]), %%d1 \n" /* Get current state of clock port */
"move.l %[cbit], %%d2 \n" /* Precalculate opposite state of clock line */
"eor.l %%d1, %%d2 \n"
"lsl.l #1,%[data] \n" /* Shift out MSB */
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n" /* 1: flip data bit */
"move.l %%d0, (%[gpo1]) \n" /* and output new DATA state */
"1: \n"
"move.l %%d2, (%[gpo0]) \n" /* Set CLK */
"move.l %%d1, (%[gpo0]) \n" /* Reset CLK */
"lsl.l #1,%[data] \n" /* ..unrolled.. */
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"lsl.l #1,%[data] \n"
"bcc.s 1f \n"
"eor.l %[dbit], %%d0 \n"
"move.l %%d0, (%[gpo1]) \n"
"1: \n"
"move.l %%d2, (%[gpo0]) \n"
"move.l %%d1, (%[gpo0]) \n"
"move.w %%d3, %%sr \n" /* Restore interrupt level */
: /* outputs */
[data]"+d"(data)
: /* inputs */
[gpo0]"a"(&GPIO_OUT),
[cbit]"i"(0x10000000),
[gpo1]"a"(&GPIO1_OUT),
[dbit]"d"(0x00040000)
: /* clobbers */
"d0", "d1", "d2", "d3"
);
}
void lcd_remote_write_command(int cmd)
{
cs_countdown = 0;
RS_LO;
CS_LO;
_write_byte(cmd);
#ifdef HAVE_REMOTE_LCD_TICKING
_byte_delay(byte_delay - 148);
#endif
cs_countdown = CS_TIMEOUT;
}
void lcd_remote_write_command_ex(int cmd, int data)
{
cs_countdown = 0;
RS_LO;
CS_LO;
_write_byte(cmd);
#ifdef HAVE_REMOTE_LCD_TICKING
_byte_delay(byte_delay - 148);
#endif
_write_byte(data);
#ifdef HAVE_REMOTE_LCD_TICKING
_byte_delay(byte_delay - 148);
#endif
cs_countdown = CS_TIMEOUT;
}
void lcd_remote_write_data(const unsigned char* p_bytes, int count) ICODE_ATTR;
void lcd_remote_write_data(const unsigned char* p_bytes, int count)
{
const unsigned char *p_end = p_bytes + count;
cs_countdown = 0;
RS_HI;
CS_LO;
/* This is safe as long as lcd_remote_write_data() isn't called from within
* an ISR. */
if (cpu_frequency < 50000000)
{
while (p_bytes < p_end)
{
_write_fast(*p_bytes++);
#ifdef HAVE_REMOTE_LCD_TICKING
_byte_delay(byte_delay - 87);
#endif
}
}
else
{
while (p_bytes < p_end)
{
_write_byte(*p_bytes++);
#ifdef HAVE_REMOTE_LCD_TICKING
_byte_delay(byte_delay - 148);
#endif
}
}
cs_countdown = CS_TIMEOUT;
}
#endif /* !SIMULATOR */
/*** hardware configuration ***/
int lcd_remote_default_contrast(void)
{
return LCD_REMOTE_DEFAULT_CONTRAST;
}
#ifndef SIMULATOR
#ifdef HAVE_REMOTE_LCD_TICKING
void lcd_remote_emireduce(bool state)
{
emireduce = state;
}
#endif
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?1:0));
}
/* 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);
}
}
}
/* The actual LCD init */
static void remote_lcd_init(void)
{
CS_HI;
CLK_LO;
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);
}
int remote_type(void)
{
return _remote_type;
}
/* Monitor remote hotswap */
static void remote_tick(void)
{
static bool last_status = false;
static int countdown = 0;
static int init_delay = 0;
bool current_status;
int val;
int level;
current_status = ((GPIO_READ & 0x40000000) == 0);
/* Only report when the status has changed */
if (current_status != last_status)
{
last_status = current_status;
countdown = current_status ? 20*HZ : 1;
}
else
{
/* Count down until it gets negative */
if (countdown >= 0)
countdown--;
if (current_status)
{
if (!(countdown % 8))
{
/* Determine which type of remote it is */
level = set_irq_level(HIGHEST_IRQ_LEVEL);
val = adc_scan(ADC_REMOTEDETECT);
set_irq_level(level);
if (val < ADCVAL_H100_LCD_REMOTE_HOLD)
{
if (val < ADCVAL_H100_LCD_REMOTE)
if (val < ADCVAL_H300_LCD_REMOTE)
_remote_type = REMOTETYPE_H300_LCD; /* hold off */
else
_remote_type = REMOTETYPE_H100_LCD; /* hold off */
else
if (val < ADCVAL_H300_LCD_REMOTE_HOLD)
_remote_type = REMOTETYPE_H300_LCD; /* hold on */
else
_remote_type = REMOTETYPE_H100_LCD; /* hold on */
if (--init_delay <= 0)
{
queue_post(&remote_scroll_queue, REMOTE_INIT_LCD, 0);
init_delay = 6;
}
}
else
{
_remote_type = REMOTETYPE_H300_NONLCD; /* hold on or off */
}
}
}
else
{
if (countdown == 0)
{
_remote_type = REMOTETYPE_UNPLUGGED;
queue_post(&remote_scroll_queue, REMOTE_DEINIT_LCD, 0);
}
}
}
/* handle chip select timeout */
if (cs_countdown >= 0)
cs_countdown--;
if (cs_countdown == 0)
CS_HI;
}
#endif /* !SIMULATOR */
/* LCD init */
#ifdef SIMULATOR
void lcd_remote_init(void)
{
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name IF_PRIO(, PRIORITY_USER_INTERFACE));
}
#else /* !SIMULATOR */
/* Initialise ports and kick off monitor */
void lcd_remote_init(void)
{
#ifdef IRIVER_H300_SERIES
or_l(0x10010000, &GPIO_FUNCTION); /* GPIO16: RS
GPIO28: CLK */
or_l(0x00040006, &GPIO1_FUNCTION); /* GPO33: Backlight
GPIO34: CS
GPIO50: Data */
or_l(0x10010000, &GPIO_ENABLE);
or_l(0x00040006, &GPIO1_ENABLE);
#else
or_l(0x10010800, &GPIO_FUNCTION); /* GPIO11: Backlight
GPIO16: RS
GPIO28: CLK */
or_l(0x00040004, &GPIO1_FUNCTION); /* GPIO34: CS
GPIO50: Data */
or_l(0x10010800, &GPIO_ENABLE);
or_l(0x00040004, &GPIO1_ENABLE);
#endif
lcd_remote_clear_display();
/* private queue */
queue_init(&remote_scroll_queue, false);
tick_add_task(remote_tick);
create_thread(scroll_thread, scroll_stack,
sizeof(scroll_stack), scroll_name IF_PRIO(, PRIORITY_USER_INTERFACE));
}
/*** update functions ***/
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_remote_update(void) ICODE_ATTR;
void lcd_remote_update(void)
{
int y;
if (!remote_initialized)
return;
#ifdef HAVE_REMOTE_LCD_TICKING
/* Adjust byte delay for emi reduction. */
byte_delay = emireduce ? cpu_frequency / 197600 + 28: 0;
#endif
/* 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) ICODE_ATTR;
void lcd_remote_update_rect(int x, 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) >> 3;
y >>= 3;
if(x + width > LCD_REMOTE_WIDTH)
width = LCD_REMOTE_WIDTH - x;
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;
#ifdef HAVE_REMOTE_LCD_TICKING
/* Adjust byte delay for emi reduction */
byte_delay = emireduce ? cpu_frequency / 197600 + 28: 0;
#endif
/* 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+xoffset) >> 4) & 0xf));
lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | ((x+xoffset) & 0xf));
lcd_remote_write_data(&lcd_remote_framebuffer[y][x], width);
}
}
#endif /* !SIMULATOR */
/*** parameter handling ***/
void lcd_remote_set_drawmode(int mode)
{
drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
}
int lcd_remote_get_drawmode(void)
{
return drawmode;
}
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);
}
/*** low-level drawing functions ***/
static void setpixel(int x, int y)
{
lcd_remote_framebuffer[y>>3][x] |= 1 << (y & 7);
}
static void clearpixel(int x, int y)
{
lcd_remote_framebuffer[y>>3][x] &= ~(1 << (y & 7));
}
static void flippixel(int x, int y)
{
lcd_remote_framebuffer[y>>3][x] ^= 1 << (y & 7);
}
static void nopixel(int x, int y)
{
(void)x;
(void)y;
}
lcd_remote_pixelfunc_type* const lcd_remote_pixelfuncs[8] = {
flippixel, nopixel, setpixel, setpixel,
nopixel, clearpixel, nopixel, clearpixel
};
static void flipblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void flipblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address ^= bits & mask;
}
static void bgblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bgblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address &= bits | ~mask;
}
static void fgblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void fgblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address |= bits & mask;
}
static void solidblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
bits ^= data;
*address = data ^ (bits & mask);
}
static void flipinvblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void flipinvblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address ^= ~bits & mask;
}
static void bginvblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void bginvblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address &= ~(bits & mask);
}
static void fginvblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void fginvblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
*address |= ~bits & mask;
}
static void solidinvblock(fb_remote_data *address, unsigned mask, unsigned bits)
ICODE_ATTR;
static void solidinvblock(fb_remote_data *address, unsigned mask, unsigned bits)
{
unsigned data = *address;
bits = ~bits ^ data;
*address = data ^ (bits & mask);
}
lcd_remote_blockfunc_type* const lcd_remote_blockfuncs[8] = {
flipblock, bgblock, fgblock, solidblock,
flipinvblock, bginvblock, fginvblock, solidinvblock
};
/*** drawing functions ***/
/* Clear the whole display */
void lcd_remote_clear_display(void)
{
unsigned bits = (drawmode & DRMODE_INVERSEVID) ? 0xFFu : 0;
memset(lcd_remote_framebuffer, bits, sizeof lcd_remote_framebuffer);
scrolling_lines = 0;
}
/* Set a single pixel */
void lcd_remote_drawpixel(int x, int y)
{
if (((unsigned)x < LCD_REMOTE_WIDTH) && ((unsigned)y < LCD_REMOTE_HEIGHT))
lcd_remote_pixelfuncs[drawmode](x, y);
}
/* Draw a line */
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;
lcd_remote_pixelfunc_type *pfunc = lcd_remote_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_REMOTE_WIDTH) && ((unsigned)y < LCD_REMOTE_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_remote_hline(int x1, int x2, int y)
{
int x;
fb_remote_data *dst, *dst_end;
unsigned mask;
lcd_remote_blockfunc_type *bfunc;
/* direction flip */
if (x2 < x1)
{
x = x1;
x1 = x2;
x2 = x;
}
/* nothing to draw? */
if (((unsigned)y >= LCD_REMOTE_HEIGHT) || (x1 >= LCD_REMOTE_WIDTH)
|| (x2 < 0))
return;
/* clipping */
if (x1 < 0)
x1 = 0;
if (x2 >= LCD_REMOTE_WIDTH)
x2 = LCD_REMOTE_WIDTH-1;
bfunc = lcd_remote_blockfuncs[drawmode];
dst = &lcd_remote_framebuffer[y>>3][x1];
mask = 1 << (y & 7);
dst_end = dst + x2 - x1;
do
bfunc(dst++, mask, 0xFFu);
while (dst <= dst_end);
}
/* Draw a vertical line (optimised) */
void lcd_remote_vline(int x, int y1, int y2)
{
int ny;
fb_remote_data *dst;
unsigned mask, mask_bottom;
lcd_remote_blockfunc_type *bfunc;
/* direction flip */
if (y2 < y1)
{
ny = y1;
y1 = y2;
y2 = ny;
}
/* nothing to draw? */
if (((unsigned)x >= LCD_REMOTE_WIDTH) || (y1 >= LCD_REMOTE_HEIGHT)
|| (y2 < 0))
return;
/* clipping */
if (y1 < 0)
y1 = 0;
if (y2 >= LCD_REMOTE_HEIGHT)
y2 = LCD_REMOTE_HEIGHT-1;
bfunc = lcd_remote_blockfuncs[drawmode];
dst = &lcd_remote_framebuffer[y1>>3][x];
ny = y2 - (y1 & ~7);
mask = 0xFFu << (y1 & 7);
mask_bottom = 0xFFu >> (~ny & 7);
for (; ny >= 8; ny -= 8)
{
bfunc(dst, mask, 0xFFu);
dst += LCD_REMOTE_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
bfunc(dst, mask, 0xFFu);
}
/* Draw a rectangular box */
void lcd_remote_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_remote_vline(x, y, y2);
lcd_remote_vline(x2, y, y2);
lcd_remote_hline(x, x2, y);
lcd_remote_hline(x, x2, y2);
}
/* Fill a rectangular area */
void lcd_remote_fillrect(int x, int y, int width, int height)
{
int ny;
fb_remote_data *dst, *dst_end;
unsigned mask, mask_bottom;
unsigned bits = 0;
lcd_remote_blockfunc_type *bfunc;
bool fillopt = false;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_REMOTE_WIDTH)
|| (y >= LCD_REMOTE_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_REMOTE_WIDTH)
width = LCD_REMOTE_WIDTH - x;
if (y + height > LCD_REMOTE_HEIGHT)
height = LCD_REMOTE_HEIGHT - y;
if (drawmode & DRMODE_INVERSEVID)
{
if (drawmode & DRMODE_BG)
{
fillopt = true;
}
}
else
{
if (drawmode & DRMODE_FG)
{
fillopt = true;
bits = 0xFFu;
}
}
bfunc = lcd_remote_blockfuncs[drawmode];
dst = &lcd_remote_framebuffer[y>>3][x];
ny = height - 1 + (y & 7);
mask = 0xFFu << (y & 7);
mask_bottom = 0xFFu >> (~ny & 7);
for (; ny >= 8; ny -= 8)
{
if (fillopt && (mask == 0xFFu))
memset(dst, bits, width);
else
{
fb_remote_data *dst_row = dst;
dst_end = dst_row + width;
do
bfunc(dst_row++, mask, 0xFFu);
while (dst_row < dst_end);
}
dst += LCD_REMOTE_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 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 the same as the internal lcd hw format. */
/* Draw a partial bitmap */
void lcd_remote_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_remote_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_remote_data *dst, *dst_end;
unsigned mask, mask_bottom;
lcd_remote_blockfunc_type *bfunc;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_REMOTE_WIDTH)
|| (y >= LCD_REMOTE_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_REMOTE_WIDTH)
width = LCD_REMOTE_WIDTH - x;
if (y + height > LCD_REMOTE_HEIGHT)
height = LCD_REMOTE_HEIGHT - y;
src += stride * (src_y >> 3) + src_x; /* move starting point */
src_y &= 7;
y -= src_y;
dst = &lcd_remote_framebuffer[y>>3][x];
shift = y & 7;
ny = height - 1 + shift + src_y;
bfunc = lcd_remote_blockfuncs[drawmode];
mask = 0xFFu << (shift + src_y);
mask_bottom = 0xFFu >> (~ny & 7);
if (shift == 0)
{
bool copyopt = (drawmode == DRMODE_SOLID);
for (; ny >= 8; ny -= 8)
{
if (copyopt && (mask == 0xFFu))
memcpy(dst, src, width);
else
{
const unsigned char *src_row = src;
fb_remote_data *dst_row = dst;
dst_end = dst_row + width;
do
bfunc(dst_row++, mask, *src_row++);
while (dst_row < dst_end);
}
src += stride;
dst += LCD_REMOTE_WIDTH;
mask = 0xFFu;
}
mask &= mask_bottom;
if (copyopt && (mask == 0xFFu))
memcpy(dst, src, width);
else
{
dst_end = dst + width;
do
bfunc(dst++, mask, *src++);
while (dst < dst_end);
}
}
else
{
dst_end = dst + width;
do
{
const unsigned char *src_col = src++;
fb_remote_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)
{
bfunc(dst_col, mask_col, data);
mask_col = 0xFFu;
}
else
mask_col >>= 8;
src_col += stride;
dst_col += LCD_REMOTE_WIDTH;
data >>= 8;
}
data |= *src_col << shift;
bfunc(dst_col, mask_col & mask_bottom, data);
}
while (dst < dst_end);
}
}
/* Draw a full bitmap */
void lcd_remote_bitmap(const unsigned char *src, int x, int y, int width,
int height)
{
lcd_remote_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_remote_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_REMOTE_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_remote_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_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_offset(x, y, str, STYLE_DEFAULT, 0);
}
void lcd_remote_puts_style(int x, int y, const unsigned char *str, int style)
{
lcd_remote_puts_style_offset(x, y, str, style, 0);
}
void lcd_remote_puts_offset(int x, int y, const unsigned char *str, int offset)
{
lcd_remote_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_remote_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_remote_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_remote_putsxyofs(xpos, ypos, offset, str);
drawmode ^= DRMODE_INVERSEVID;
xrect = xpos + MAX(w - offset, 0);
lcd_remote_fillrect(xrect, ypos, LCD_REMOTE_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_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)
{
lcd_remote_puts_scroll_style_offset(x, y, string, style, 0);
}
void lcd_remote_puts_scroll_offset(int x, int y, const unsigned char *string, int offset)
{
lcd_remote_puts_scroll_style_offset(x, y, string, STYLE_DEFAULT, offset);
}
void lcd_remote_puts_scroll_style_offset(int x, int y, const unsigned char *string,
int style, int offset)
{
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_offset(x,y,string,STYLE_INVERT,offset);
}
else
lcd_remote_puts_offset(x,y,string,offset);
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, (char *)string);
/* get width */
s->width = lcd_remote_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_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((unsigned char *)s->line, &w, &h);
}
end = strchr(s->line, '\0');
strncpy(end, (char *)string, LCD_REMOTE_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;
long next_tick = current_tick;
long delay = 0;
int index;
int xpos, ypos;
int lastmode;
#ifndef SIMULATOR
struct event ev;
#endif
/* initialize scroll struct array */
scrolling_lines = 0;
while ( 1 ) {
#ifdef SIMULATOR
sleep(delay);
#else
if (remote_initialized)
queue_wait_w_tmo(&remote_scroll_queue, &ev, delay);
else
queue_wait(&remote_scroll_queue, &ev);
switch (ev.id)
{
case REMOTE_INIT_LCD:
remote_lcd_init();
lcd_remote_update();
break;
case REMOTE_DEINIT_LCD:
CLK_LO;
CS_HI;
remote_initialized = false;
break;
}
delay = next_tick - current_tick - 1;
if (delay >= 0)
continue;
#endif
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_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;
}
lastmode = drawmode;
drawmode = s->invert ?
(DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
lcd_remote_putsxyofs(xpos, ypos, s->offset, s->line);
drawmode = lastmode;
lcd_remote_update_rect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, pf->height);
}
next_tick += scroll_ticks;
delay = next_tick - current_tick - 1;
if (delay < 0)
{
next_tick = current_tick + 1;
delay = 0;
}
}
}
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