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rockbox/firmware/export/lcd-remote.h
Andrew Mahone f7fa7e5ad5 Latest work on the bmp on-load scaler: 
Macros for calculating size needed for bitmap load and scaling, so that
these can be compile-time constant when their inputs are.

Reduce size of bayer dither by chopping all but first row of dither
matrix, and replacing 2D lookup with 1D lookup and small calculation.

Move some functions not related to actual bmp file loading out of bmp.c.

A smaller brightness() for mono targets, and a higher-quality one for
greyscale targets, both replacing the division by 10 with a shift.

Port of the linear and area scalers to greyscale targets, this costs
some binsize but produces better output even when dithered to 2bpp.

Move duplicated row output code from inside vertical scalers to a
separate row output function.

Move some multiplies out of the line scaler, for a small speedup and
code size reduction, as well as a small improvement in accuracy for the
upscaling case.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19592 a1c6a512-1295-4272-9138-f99709370657
2008-12-26 07:03:22 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Richard S. La Charité
*
* 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.
*
****************************************************************************/
#ifndef __LCD_REMOTE_H__
#define __LCD_REMOTE_H__
#include <stdbool.h>
#include "cpu.h"
#include "config.h"
#include "lcd.h"
#ifdef HAVE_REMOTE_LCD
#if defined(TARGET_TREE) && !defined(__PCTOOL__)
#include "lcd-remote-target.h"
#endif
#if defined(IRIVER_H100_SERIES) || defined(IRIVER_H300_SERIES)
#define REMOTETYPE_UNPLUGGED 0
#define REMOTETYPE_H100_LCD 1
#define REMOTETYPE_H300_LCD 2
#define REMOTETYPE_H300_NONLCD 3
int remote_type(void);
#endif
#define STYLE_DEFAULT 0x00000000
#define STYLE_INVERT 0x20000000
#if LCD_REMOTE_DEPTH <= 8
#if (LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED) \
|| (LCD_REMOTE_PIXELFORMAT == HORIZONTAL_INTERLEAVED)
typedef unsigned short fb_remote_data;
#define FB_RDATA_SZ 2
#else
typedef unsigned char fb_remote_data;
#define FB_RDATA_SZ 1
#endif
#elif LCD_DEPTH <= 16
typedef unsigned short fb_remote_data;
#define FB_RDATA_SZ 2
#else
typedef unsigned long fb_remote_data;
#define FB_RDATA_SZ 4
#endif
/* common functions */
void lcd_remote_init(void);
void lcd_remote_write_command(int cmd);
void lcd_remote_write_command_ex(int cmd, int data);
void lcd_remote_write_data(const fb_remote_data *data, int count);
/* Low-level drawing function types */
typedef void lcd_remote_pixelfunc_type(int x, int y);
typedef void lcd_remote_blockfunc_type(fb_remote_data *address, unsigned mask,
unsigned bits);
#if LCD_REMOTE_DEPTH > 1 /* greyscale - 8 bit max */
#ifdef HAVE_LCD_COLOR
extern unsigned lcd_remote_color_to_native(unsigned color);
#endif
#define LCD_REMOTE_MAX_LEVEL ((1 << LCD_REMOTE_DEPTH) - 1)
/**
* On 2 bit for example (y >> (8-DEPTH)) = (y >> 6) = y/64 gives:
* |000-063|064-127|128-191|192-255|
* | 0 | 1 | 2 | 3 |
*/
#define LCD_REMOTE_BRIGHTNESS(y) ((y) >> (8-LCD_REMOTE_DEPTH))
#define LCD_REMOTE_BLACK LCD_REMOTE_BRIGHTNESS(0)
#define LCD_REMOTE_DARKGRAY LCD_REMOTE_BRIGHTNESS(85)
#define LCD_REMOTE_LIGHTGRAY LCD_REMOTE_BRIGHTNESS(170)
#define LCD_REMOTE_WHITE LCD_REMOTE_BRIGHTNESS(255)
#define LCD_REMOTE_DEFAULT_FG LCD_REMOTE_BLACK
#define LCD_REMOTE_DEFAULT_BG LCD_REMOTE_WHITE
#endif
/* Frame buffer dimensions (format checks only cover existing targets!) */
#if LCD_REMOTE_DEPTH == 1
#define LCD_REMOTE_FBHEIGHT ((LCD_REMOTE_HEIGHT+7)/8)
#elif LCD_REMOTE_DEPTH == 2
#if LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED
#define LCD_REMOTE_FBHEIGHT ((LCD_REMOTE_HEIGHT+7)/8)
#endif
#endif /* LCD_REMOTE_DEPTH */
/* Set defaults if not defined different yet. The defaults apply to both
* dimensions for LCD_REMOTE_DEPTH >= 8 */
#ifndef LCD_REMOTE_FBWIDTH
#define LCD_REMOTE_FBWIDTH LCD_REMOTE_WIDTH
#endif
#ifndef LCD_REMOTE_FBHEIGHT
#define LCD_REMOTE_FBHEIGHT LCD_REMOTE_HEIGHT
#endif
/* The actual framebuffer */
extern fb_remote_data lcd_remote_framebuffer[LCD_REMOTE_FBHEIGHT][LCD_REMOTE_FBWIDTH];
extern void lcd_remote_init(void);
extern int lcd_remote_default_contrast(void);
extern void lcd_remote_set_contrast(int val);
extern void lcd_remote_set_viewport(struct viewport* vp);
extern void lcd_remote_clear_display(void);
extern void lcd_remote_clear_viewport(void);
extern void lcd_remote_puts(int x, int y, const unsigned char *str);
extern void lcd_remote_puts_style(int x, int y, const unsigned char *str,
int style);
extern void lcd_remote_puts_offset(int x, int y, const unsigned char *str,
int offset);
extern void lcd_remote_puts_style_offset(int x, int y, const unsigned char *str,
int style, int offset);
extern void lcd_remote_putc(int x, int y, unsigned short ch);
extern void lcd_remote_stop_scroll(void);
extern void lcd_remote_scroll_speed(int speed);
extern void lcd_remote_scroll_delay(int ms);
extern void lcd_remote_puts_scroll(int x, int y, const unsigned char *str);
extern void lcd_remote_puts_scroll_style(int x, int y, const unsigned char *str,
int style);
extern void lcd_remote_puts_scroll_offset(int x, int y,
const unsigned char *str, int offset);
extern void lcd_remote_puts_scroll_style_offset(int x, int y,
const unsigned char *string,
int style, int offset);
extern void lcd_remote_update(void);
extern void lcd_remote_update_rect(int x, int y, int width, int height);
extern void lcd_remote_update_viewport(void);
extern void lcd_remote_update_viewport_rect(int x, int y, int width, int height);
extern void lcd_remote_set_invert_display(bool yesno);
extern void lcd_remote_set_flip(bool yesno);
extern void lcd_remote_set_drawmode(int mode);
extern int lcd_remote_get_drawmode(void);
extern int lcd_remote_getwidth(void);
extern int lcd_remote_getheight(void);
extern void lcd_remote_setfont(int font);
extern int lcd_remote_getfont(void);
extern int lcd_remote_getstringsize(const unsigned char *str, int *w, int *h);
/* low level drawing function pointer arrays */
#if LCD_REMOTE_DEPTH > 1
extern lcd_remote_pixelfunc_type* const *lcd_remote_pixelfuncs;
extern lcd_remote_blockfunc_type* const *lcd_remote_blockfuncs;
#else
extern lcd_remote_pixelfunc_type* const lcd_remote_pixelfuncs[8];
extern lcd_remote_blockfunc_type* const lcd_remote_blockfuncs[8];
#endif
extern void lcd_remote_drawpixel(int x, int y);
extern void lcd_remote_drawline(int x1, int y1, int x2, int y2);
extern void lcd_remote_hline(int x1, int x2, int y);
extern void lcd_remote_vline(int x, int y1, int y2);
extern void lcd_remote_drawrect(int x, int y, int width, int height);
extern void lcd_remote_fillrect(int x, int y, int width, int height);
extern void lcd_remote_bitmap_part(const fb_remote_data *src, int src_x,
int src_y, int stride, int x, int y,
int width, int height);
extern void lcd_remote_bitmap(const fb_remote_data *src, int x, int y,
int width, int height);
extern void lcd_remote_putsxy(int x, int y, const unsigned char *str);
extern void lcd_remote_bidir_scroll(int threshold);
extern void lcd_remote_scroll_step(int pixels);
#if LCD_REMOTE_DEPTH > 1
extern void lcd_remote_set_foreground(unsigned foreground);
extern unsigned lcd_remote_get_foreground(void);
extern void lcd_remote_set_background(unsigned background);
extern unsigned lcd_remote_get_background(void);
extern void lcd_remote_set_drawinfo(int mode, unsigned foreground,
unsigned background);
void lcd_remote_set_backdrop(fb_remote_data* backdrop);
fb_remote_data* lcd_remote_get_backdrop(void);
extern void lcd_remote_mono_bitmap_part(const unsigned char *src, int src_x,
int src_y, int stride, int x, int y,
int width, int height);
extern void lcd_remote_mono_bitmap(const unsigned char *src, int x, int y,
int width, int height);
extern void lcd_remote_bitmap_transparent_part(const fb_remote_data *src,
int src_x, int src_y,
int stride, int x, int y,
int width, int height);
extern void lcd_bitmap_remote_transparent(const fb_remote_data *src, int x,
int y, int width, int height);
#else /* LCD_REMOTE_DEPTH == 1 */
#define lcd_remote_mono_bitmap lcd_remote_bitmap
#define lcd_remote_mono_bitmap_part lcd_remote_bitmap_part
#endif /* LCD_REMOTE_DEPTH */
#endif
#endif /* __LCD_REMOTE_H__ */
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