2acc0ac542
later. We still need to hunt down snippets used that are not. 1324 modified files... http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
253 lines
7.9 KiB
C
253 lines
7.9 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2007 by Will Robertson
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "config.h"
|
|
#include "cpu.h"
|
|
#include "string.h"
|
|
#include "lcd.h"
|
|
#include "kernel.h"
|
|
#include "lcd-target.h"
|
|
|
|
#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
|
|
|
|
static volatile bool lcd_on = true;
|
|
volatile bool lcd_poweroff = false;
|
|
static unsigned lcd_yuv_options = 0;
|
|
/*
|
|
** This is imported from lcd-16bit.c
|
|
*/
|
|
extern struct viewport* current_vp;
|
|
|
|
/* Copies a rectangle from one framebuffer to another. Can be used in
|
|
single transfer mode with width = num pixels, and height = 1 which
|
|
allows a full-width rectangle to be copied more efficiently. */
|
|
extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
|
|
int width, int height);
|
|
|
|
#if 0
|
|
bool lcd_enabled()
|
|
{
|
|
return lcd_on;
|
|
}
|
|
#endif
|
|
|
|
/* LCD init */
|
|
void lcd_init_device(void)
|
|
{
|
|
}
|
|
|
|
/* Update a fraction of the display. */
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
|
{
|
|
fb_data *dst, *src;
|
|
|
|
if (!lcd_on)
|
|
return;
|
|
|
|
if (x + width > LCD_WIDTH)
|
|
width = LCD_WIDTH - x; /* Clip right */
|
|
if (x < 0)
|
|
width += x, x = 0; /* Clip left */
|
|
if (width <= 0)
|
|
return; /* nothing left to do */
|
|
|
|
if (y + height > LCD_HEIGHT)
|
|
height = LCD_HEIGHT - y; /* Clip bottom */
|
|
if (y < 0)
|
|
height += y, y = 0; /* Clip top */
|
|
if (height <= 0)
|
|
return; /* nothing left to do */
|
|
|
|
/* TODO: It may be faster to swap the addresses of lcd_driver_framebuffer
|
|
* and lcd_framebuffer */
|
|
dst = (fb_data *)FRAME + LCD_WIDTH*y + x;
|
|
src = &lcd_framebuffer[y][x];
|
|
|
|
/* Copy part of the Rockbox framebuffer to the second framebuffer */
|
|
if (width < LCD_WIDTH)
|
|
{
|
|
/* Not full width - do line-by-line */
|
|
lcd_copy_buffer_rect(dst, src, width, height);
|
|
}
|
|
else
|
|
{
|
|
/* Full width - copy as one line */
|
|
lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
|
|
}
|
|
}
|
|
|
|
void lcd_enable(bool state)
|
|
{
|
|
(void)state;
|
|
}
|
|
|
|
bool lcd_enabled(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/* Update the display.
|
|
This must be called after all other LCD functions that change the display. */
|
|
void lcd_update(void)
|
|
{
|
|
if (!lcd_on)
|
|
return;
|
|
|
|
lcd_copy_buffer_rect((fb_data *)FRAME, &lcd_framebuffer[0][0],
|
|
LCD_WIDTH*LCD_HEIGHT, 1);
|
|
}
|
|
|
|
void lcd_bitmap_transparent_part(const fb_data *src, int src_x, int src_y,
|
|
int stride, int x, int y, int width,
|
|
int height)
|
|
{
|
|
int w, px;
|
|
fb_data *dst;
|
|
|
|
if (x + width > current_vp->width)
|
|
width = current_vp->width - x; /* Clip right */
|
|
if (x < 0)
|
|
width += x, x = 0; /* Clip left */
|
|
if (width <= 0)
|
|
return; /* nothing left to do */
|
|
|
|
if (y + height > current_vp->height)
|
|
height = current_vp->height - y; /* Clip bottom */
|
|
if (y < 0)
|
|
height += y, y = 0; /* Clip top */
|
|
if (height <= 0)
|
|
return; /* nothing left to do */
|
|
|
|
src += stride * src_y + src_x; /* move starting point */
|
|
dst = &lcd_framebuffer[current_vp->y+y][current_vp->x+x];
|
|
|
|
asm volatile (
|
|
".rowstart: \r\n"
|
|
"mov %[w], %[width] \r\n" /* Load width for inner loop */
|
|
".nextpixel: \r\n"
|
|
"ldrh %[px], [%[s]], #2 \r\n" /* Load src pixel */
|
|
"add %[d], %[d], #2 \r\n" /* Uncoditionally increment dst */
|
|
"cmp %[px], %[fgcolor] \r\n" /* Compare to foreground color */
|
|
"streqh %[fgpat], [%[d], #-2] \r\n" /* Store foregroud if match */
|
|
"cmpne %[px], %[transcolor] \r\n" /* Compare to transparent color */
|
|
"strneh %[px], [%[d], #-2] \r\n" /* Store dst if not transparent */
|
|
"subs %[w], %[w], #1 \r\n" /* Width counter has run down? */
|
|
"bgt .nextpixel \r\n" /* More in this row? */
|
|
"add %[s], %[s], %[sstp], lsl #1 \r\n" /* Skip over to start of next line */
|
|
"add %[d], %[d], %[dstp], lsl #1 \r\n"
|
|
"subs %[h], %[h], #1 \r\n" /* Height counter has run down? */
|
|
"bgt .rowstart \r\n" /* More rows? */
|
|
: [w]"=&r"(w), [h]"+&r"(height), [px]"=&r"(px),
|
|
[s]"+&r"(src), [d]"+&r"(dst)
|
|
: [width]"r"(width),
|
|
[sstp]"r"(stride - width),
|
|
[dstp]"r"(LCD_WIDTH - width),
|
|
[transcolor]"r"(TRANSPARENT_COLOR),
|
|
[fgcolor]"r"(REPLACEWITHFG_COLOR),
|
|
[fgpat]"r"(current_vp->fg_pattern)
|
|
);
|
|
}
|
|
|
|
void lcd_yuv_set_options(unsigned options)
|
|
{
|
|
lcd_yuv_options = options;
|
|
}
|
|
|
|
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
|
|
extern void lcd_write_yuv420_lines(fb_data *dst,
|
|
unsigned char const * const src[3],
|
|
int width,
|
|
int stride);
|
|
extern void lcd_write_yuv420_lines_odither(fb_data *dst,
|
|
unsigned char const * const src[3],
|
|
int width,
|
|
int stride,
|
|
int x_screen, /* To align dither pattern */
|
|
int y_screen);
|
|
/* Performance function to blit a YUV bitmap directly to the LCD */
|
|
/* For the Gigabeat - show it rotated */
|
|
/* So the LCD_WIDTH is now the height */
|
|
void lcd_blit_yuv(unsigned char * const src[3],
|
|
int src_x, int src_y, int stride,
|
|
int x, int y, int width, int height)
|
|
{
|
|
/* Caches for chroma data so it only need be recaculated every other
|
|
line */
|
|
unsigned char const * yuv_src[3];
|
|
off_t z;
|
|
|
|
if (!lcd_on)
|
|
return;
|
|
|
|
/* Sorry, but width and height must be >= 2 or else */
|
|
width &= ~1;
|
|
height >>= 1;
|
|
|
|
y = LCD_WIDTH - 1 - y;
|
|
fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + y;
|
|
|
|
z = stride*src_y;
|
|
yuv_src[0] = src[0] + z + src_x;
|
|
yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
|
|
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
|
|
|
|
if (lcd_yuv_options & LCD_YUV_DITHER)
|
|
{
|
|
do
|
|
{
|
|
lcd_write_yuv420_lines_odither(dst, yuv_src, width, stride, y, x);
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
|
yuv_src[2] += stride >> 1;
|
|
dst -= 2;
|
|
y -= 2;
|
|
}
|
|
while (--height > 0);
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
lcd_write_yuv420_lines(dst, yuv_src, width, stride);
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
|
yuv_src[2] += stride >> 1;
|
|
dst -= 2;
|
|
}
|
|
while (--height > 0);
|
|
}
|
|
}
|
|
|
|
void lcd_set_contrast(int val) {
|
|
(void) val;
|
|
// TODO:
|
|
}
|
|
|
|
void lcd_set_invert_display(bool yesno) {
|
|
(void) yesno;
|
|
// TODO:
|
|
}
|
|
|
|
void lcd_set_flip(bool yesno) {
|
|
(void) yesno;
|
|
// TODO:
|
|
}
|
|
|