23d9812273
struct plugin_api *rb is declared in PLUGIN_HEADER, and pointed to by __header.api the loader uses this pointer to initialize rb before calling entry_point entry_point is no longer passed a pointer to the plugin API all plugins, and pluginlib functions, are modified to refer to the global rb pluginlib functions which only served to copy the API pointer are removed git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19776 a1c6a512-1295-4272-9138-f99709370657
189 lines
7 KiB
C
189 lines
7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* New greyscale framework
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*
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* This is a generic framework to display 129 shades of grey on low-depth
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* bitmap LCDs (Archos b&w, Iriver & Ipod 4-grey) within plugins.
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*
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* Copyright (C) 2008 Jens Arnold
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __GREY_H__
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#define __GREY_H__
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#include "plugin.h"
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#if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH < 4)
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/* The greyscale lib uses 8 bit brightness values natively on input. */
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#define GREY_BRIGHTNESS(y) (y)
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/* Some predefined levels for convenience: */
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#define GREY_BLACK GREY_BRIGHTNESS(0)
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#define GREY_DARKGRAY GREY_BRIGHTNESS(85)
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#define GREY_LIGHTGRAY GREY_BRIGHTNESS(170)
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#define GREY_WHITE GREY_BRIGHTNESS(255)
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/* Greyscale library management structure declaration. You need one of these
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* in every plugin using the library, depending on whether the structure should
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* use IRAM or not. */
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#define GREY_INFO_STRUCT struct _grey_info _grey_info SHAREDBSS_ATTR;
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#define GREY_INFO_STRUCT_IRAM struct _grey_info _grey_info IBSS_ATTR;
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/* Features you can request on library init (ORed together): */
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#define GREY_BUFFERED 0x0001 /* Use a chunky buffer */
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#define GREY_RAWMAPPED 0x0002 /* No gamma & LCD linearisation */
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#define GREY_ON_COP 0x0004 /* Run ISR on COP (PP targets) */
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/* Library initialisation and release */
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bool grey_init(unsigned char *gbuf, long gbuf_size,
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unsigned features, int width, int height, long *buf_taken);
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void grey_release(void);
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/* Special functions */
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void grey_show(bool enable);
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void grey_deferred_lcd_update(void);
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/* Update functions */
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void grey_update(void);
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void grey_update_rect(int x, int y, int width, int height);
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/* Parameter handling */
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void grey_set_position(int x, int y);
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void grey_set_drawmode(int mode);
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int grey_get_drawmode(void);
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void grey_set_foreground(unsigned brightness);
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unsigned grey_get_foreground(void);
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void grey_set_background(unsigned brightness);
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unsigned grey_get_background(void);
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void grey_set_drawinfo(int mode, unsigned fg_brightness, unsigned bg_brightness);
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void grey_setfont(int newfont);
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int grey_getstringsize(const unsigned char *str, int *w, int *h);
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/* Whole display */
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void grey_clear_display(void);
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void grey_ub_clear_display(void);
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/* Pixel */
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void grey_drawpixel(int x, int y);
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/* Lines */
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void grey_drawline(int x1, int y1, int x2, int y2);
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void grey_hline(int x1, int x2, int y);
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void grey_vline(int x, int y1, int y2);
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void grey_drawrect(int x, int y, int nx, int ny);
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/* Filled primitives */
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void grey_fillrect(int x, int y, int nx, int ny);
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void grey_filltriangle(int x1, int y1, int x2, int y2, int x3, int y3);
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/* Bitmaps */
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void grey_mono_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height);
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void grey_mono_bitmap(const unsigned char *src, int x, int y, int width,
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int height);
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void grey_gray_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height);
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void grey_gray_bitmap(const unsigned char *src, int x, int y, int width,
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int height);
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void grey_ub_gray_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height);
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void grey_ub_gray_bitmap(const unsigned char *src, int x, int y, int width,
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int height);
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extern const struct custom_format format_grey;
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/* Text */
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void grey_putsxyofs(int x, int y, int ofs, const unsigned char *str);
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void grey_putsxy(int x, int y, const unsigned char *str);
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/* Scrolling */
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void grey_scroll_left(int count);
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void grey_scroll_right(int count);
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void grey_scroll_up(int count);
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void grey_scroll_down(int count);
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void grey_ub_scroll_left(int count);
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void grey_ub_scroll_right(int count);
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void grey_ub_scroll_up(int count);
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void grey_ub_scroll_down(int count);
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/*** Internal stuff ***/
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/* standard gamma (s23p8) */
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#ifdef SIMULATOR /* Standard PC gamma */
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#define _GREY_GAMMA ((200<<8)/100)
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#else /* Target LCDs have a smaller contrast range */
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#define _GREY_GAMMA ((180<<8)/100)
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#endif
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/* flag definitions */
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#define _GREY_RUNNING 0x8000 /* greyscale overlay is running */
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#define _GREY_DEFERRED_UPDATE 0x4000 /* lcd_update() requested */
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#define _GREY_BACKLIGHT_ON 0x2000 /* backlight is active - only used on 1st+2nd Gen */
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/* fast unsigned multiplication (16x16bit->32bit or 32x32bit->32bit,
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* whichever is faster for the architecture) */
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#ifdef CPU_ARM
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#define _GREY_MULUQ(a, b) ((uint32_t) (((uint32_t) (a)) * ((uint32_t) (b))))
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#else
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#define _GREY_MULUQ(a, b) ((uint32_t) (((uint16_t) (a)) * ((uint16_t) (b))))
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#endif
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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#define _GREY_BSHIFT 0
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#else /* vertical packing or vertical interleaved */
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#if (LCD_DEPTH == 1) || (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)
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#define _GREY_BSHIFT 3
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#elif LCD_DEPTH == 2
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#define _GREY_BSHIFT 2
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#endif
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#endif /* LCD_PIXELFORMAT */
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#define _GREY_BSIZE (1<<_GREY_BSHIFT)
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#define _GREY_BMASK (_GREY_BSIZE-1)
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/* The greyscale buffer management structure */
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struct _grey_info
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{
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int x;
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int y;
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int width;
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int height;
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#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
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int bx; /* 8-pixel units */
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int bwidth; /* 8-pixel units */
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#else /* vertical packing or vertical interleaved */
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int by; /* 4-pixel or 8-pixel units */
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int bheight; /* 4-pixel or 8-pixel units */
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#endif
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unsigned long flags; /* various flags, see #defines */
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unsigned char *values; /* start of greyscale pixel values */
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unsigned char *phases; /* start of greyscale pixel phases */
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unsigned char *buffer; /* start of chunky pixel buffer (for buffered mode) */
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unsigned char gvalue[256]; /* calculated brightness -> greyvalue table */
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int fg_brightness; /* current foreground brightness */
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int bg_brightness; /* current background brightness */
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int drawmode; /* current draw mode */
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int curfont; /* current selected font */
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};
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/* Global variable, defined in the plugin */
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extern struct _grey_info _grey_info;
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#endif /* HAVE_LCD_BITMAP && (LCD_DEPTH < 4) */
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#endif /* __GREY_H__ */
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