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https://github.com/Rockbox/rockbox.git
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fe6aa21e9e
None of this is needed now that mpegplayer is gone. Change-Id: I360366db8513e4d988021e8d7b7d8eb09930efb8
112 lines
3.2 KiB
C
112 lines
3.2 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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* Copyright (c) 2007, 2011 Michael Sevakis
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*
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* Shared C code for memory framebuffer LCDs
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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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#include "config.h"
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#include "system.h"
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#include "lcd.h"
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#include "lcd-target.h"
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/*** Misc. functions ***/
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bool lcd_on SHAREDBSS_ATTR = false;
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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bool lcd_active(void)
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{
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return lcd_on;
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}
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/* For use by target driver only! */
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void lcd_set_active(bool active)
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{
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lcd_on = active;
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}
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#else
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#define lcd_on true
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#endif
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#ifndef lcd_write_enabled
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#define lcd_write_enabled() lcd_on
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#endif
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/*** Blitting functions ***/
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/* Copies a rectangle from one framebuffer to another. Can be used in
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single transfer mode with width = num pixels, and height = 1 which
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allows a full-width rectangle to be copied more efficiently. */
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extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
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int width, int height);
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#ifndef LCD_OPTIMIZED_UPDATE
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/* Update the display.
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This must be called after all other LCD functions that change the display. */
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void lcd_update(void)
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{
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if (!lcd_write_enabled())
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return;
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/* Copy the Rockbox framebuffer to the second framebuffer */
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lcd_copy_buffer_rect(LCD_FRAMEBUF_ADDR(0, 0), FBADDR(0,0),
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LCD_WIDTH*LCD_HEIGHT, 1);
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}
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#endif /* LCD_OPTIMIZED_UPDATE */
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#ifndef LCD_OPTIMIZED_UPDATE_RECT
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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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fb_data *dst, *src;
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if (!lcd_write_enabled())
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return;
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x; /* Clip right */
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if (x < 0)
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width += x, x = 0; /* Clip left */
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if (width <= 0)
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return; /* nothing left to do */
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y; /* Clip bottom */
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if (y < 0)
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height += y, y = 0; /* Clip top */
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if (height <= 0)
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return; /* nothing left to do */
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dst = LCD_FRAMEBUF_ADDR(x, y);
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src = FBADDR(x,y);
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/* Copy part of the Rockbox framebuffer to the second framebuffer */
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if (width < LCD_WIDTH)
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{
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/* Not full width - do line-by-line */
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lcd_copy_buffer_rect(dst, src, width, height);
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}
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else
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{
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/* Full width - copy as one line */
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lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
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}
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}
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#endif /* LCD_OPTIMIZED_UPDATE_RECT */
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