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foxbox/firmware/drivers/lcd-h100-remote.c
Miika Pekkarinen a85044bf9e New scheduler, with priorities for swcodec platforms. Frequent task 
switching should be more efficient and tasks are stored in linked
lists to eliminate unnecessary task switching to improve performance.
Audio should no longer skip on swcodec targets caused by too CPU
hungry UI thread or background threads.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10958 a1c6a512-1295-4272-9138-f99709370657
2006-09-16 16:18:11 +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_SYSTEM));
}
#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_SYSTEM));
}
/*** 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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