632 lines
16 KiB
C
632 lines
16 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) 2005 by Dave Chapman
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* Copyright (C) 2009 by Karl Kurbjun
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*
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* Rockbox driver for 16-bit colour 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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/* to be #included by lcd-16bit*.c */
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#if !defined(ROW_INC) || !defined(COL_INC)
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#error ROW_INC or COL_INC not defined
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#endif
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enum fill_opt {
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OPT_NONE = 0,
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OPT_SET,
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OPT_COPY
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};
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/*** globals ***/
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static fb_data lcd_static_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH]
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IRAM_LCDFRAMEBUFFER CACHEALIGN_AT_LEAST_ATTR(16);
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static void *lcd_frameaddress_default(int x, int y);
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static fb_data* lcd_backdrop = NULL;
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static long lcd_backdrop_offset IDATA_ATTR = 0;
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/* shouldn't be changed unless you want system-wide framebuffer changes! */
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struct frame_buffer_t lcd_framebuffer_default =
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{
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.fb_ptr = &lcd_static_framebuffer[0][0],
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.get_address_fn = &lcd_frameaddress_default,
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.stride = STRIDE_MAIN(LCD_WIDTH, LCD_HEIGHT),
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.elems = (LCD_FBWIDTH*LCD_FBHEIGHT),
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};
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static struct viewport default_vp =
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{
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.x = 0,
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.y = 0,
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.width = LCD_WIDTH,
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.height = LCD_HEIGHT,
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.font = FONT_SYSFIXED,
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.drawmode = DRMODE_SOLID,
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.buffer = NULL,
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.fg_pattern = LCD_DEFAULT_FG,
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.bg_pattern = LCD_DEFAULT_BG,
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};
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struct viewport* lcd_current_viewport IDATA_ATTR;
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static void *lcd_frameaddress_default(int x, int y)
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{
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/* the default expects a buffer the same size as the screen */
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struct frame_buffer_t *fb = lcd_current_viewport->buffer;
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#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
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size_t element = (x * LCD_NATIVE_STRIDE(fb->stride)) + y;
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#else
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size_t element = (y * LCD_NATIVE_STRIDE(fb->stride)) + x;
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#endif
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return fb->fb_ptr + element;/*(element % fb->elems);*/
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}
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/* LCD init */
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void lcd_init(void)
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{
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/* Initialize the viewport */
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lcd_set_viewport(NULL);
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lcd_clear_display();
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/* Call device specific init */
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lcd_init_device();
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scroll_init();
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}
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/* Clear the whole display */
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void lcd_clear_display(void)
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{
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struct viewport* old_vp = lcd_current_viewport;
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lcd_current_viewport = &default_vp;
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lcd_clear_viewport();
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lcd_current_viewport = old_vp;
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}
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/*** parameter handling ***/
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void lcd_set_drawmode(int mode)
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{
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lcd_current_viewport->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
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}
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int lcd_get_drawmode(void)
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{
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return lcd_current_viewport->drawmode;
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}
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void lcd_set_foreground(unsigned color)
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{
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lcd_current_viewport->fg_pattern = color;
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}
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unsigned lcd_get_foreground(void)
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{
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return lcd_current_viewport->fg_pattern;
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}
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void lcd_set_background(unsigned color)
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{
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lcd_current_viewport->bg_pattern = color;
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}
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unsigned lcd_get_background(void)
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{
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return lcd_current_viewport->bg_pattern;
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}
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void lcd_set_drawinfo(int mode, unsigned fg_color, unsigned bg_color)
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{
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lcd_set_drawmode(mode);
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lcd_current_viewport->fg_pattern = fg_color;
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lcd_current_viewport->bg_pattern = bg_color;
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}
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int lcd_getwidth(void)
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{
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return lcd_current_viewport->width;
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}
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int lcd_getheight(void)
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{
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return lcd_current_viewport->height;
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}
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void lcd_setfont(int newfont)
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{
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lcd_current_viewport->font = newfont;
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}
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int lcd_getfont(void)
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{
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return lcd_current_viewport->font;
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}
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int lcd_getstringsize(const unsigned char *str, int *w, int *h)
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{
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return font_getstringsize(str, w, h, lcd_current_viewport->font);
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}
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void lcd_set_backdrop(fb_data* backdrop)
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{
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lcd_backdrop = backdrop;
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if (backdrop)
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{
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lcd_backdrop_offset = (intptr_t)backdrop - (intptr_t)FBADDR(0,0);
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lcd_fastpixelfuncs = lcd_fastpixelfuncs_backdrop;
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}
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else
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{
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lcd_backdrop_offset = 0;
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lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor;
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}
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}
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fb_data* lcd_get_backdrop(void)
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{
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return lcd_backdrop;
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}
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/* Set a single pixel */
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void lcd_drawpixel(int x, int y)
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{
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if ( ((unsigned)x < (unsigned)lcd_current_viewport->width)
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&& ((unsigned)y < (unsigned)lcd_current_viewport->height)
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#if defined(HAVE_VIEWPORT_CLIP)
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&& ((unsigned)x < (unsigned)LCD_WIDTH)
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&& ((unsigned)y < (unsigned)LCD_HEIGHT)
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#endif
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)
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lcd_fastpixelfuncs[lcd_current_viewport->drawmode](FBADDR(lcd_current_viewport->x+x, lcd_current_viewport->y+y));
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}
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/* Draw a line */
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void lcd_drawline(int x1, int y1, int x2, int y2)
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{
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int numpixels;
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int i;
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int deltax, deltay;
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int d, dinc1, dinc2;
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int x, xinc1, xinc2;
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int y, yinc1, yinc2;
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lcd_fastpixelfunc_type *pfunc = lcd_fastpixelfuncs[lcd_current_viewport->drawmode];
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deltay = abs(y2 - y1);
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if (deltay == 0)
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{
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/* DEBUGF("lcd_drawline() called for horizontal line - optimisation.\n"); */
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lcd_hline(x1, x2, y1);
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return;
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}
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deltax = abs(x2 - x1);
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if (deltax == 0)
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{
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/* DEBUGF("lcd_drawline() called for vertical line - optimisation.\n"); */
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lcd_vline(x1, y1, y2);
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return;
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}
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xinc2 = 1;
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yinc2 = 1;
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if (deltax >= deltay)
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{
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numpixels = deltax;
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d = 2 * deltay - deltax;
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dinc1 = deltay * 2;
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dinc2 = (deltay - deltax) * 2;
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xinc1 = 1;
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yinc1 = 0;
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}
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else
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{
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numpixels = deltay;
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d = 2 * deltax - deltay;
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dinc1 = deltax * 2;
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dinc2 = (deltax - deltay) * 2;
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xinc1 = 0;
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yinc1 = 1;
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}
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numpixels++; /* include endpoints */
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if (x1 > x2)
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{
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xinc1 = -xinc1;
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xinc2 = -xinc2;
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}
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if (y1 > y2)
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{
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yinc1 = -yinc1;
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yinc2 = -yinc2;
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}
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x = x1;
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y = y1;
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for (i = 0; i < numpixels; i++)
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{
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if ( ((unsigned)x < (unsigned)lcd_current_viewport->width)
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&& ((unsigned)y < (unsigned)lcd_current_viewport->height)
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#if defined(HAVE_VIEWPORT_CLIP)
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&& ((unsigned)x < (unsigned)LCD_WIDTH)
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&& ((unsigned)y < (unsigned)LCD_HEIGHT)
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#endif
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)
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pfunc(FBADDR(x + lcd_current_viewport->x, y + lcd_current_viewport->y));
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if (d < 0)
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{
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d += dinc1;
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x += xinc1;
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y += yinc1;
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}
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else
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{
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d += dinc2;
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x += xinc2;
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y += yinc2;
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}
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}
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}
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/* Draw a rectangular box */
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void lcd_drawrect(int x, int y, int width, int height)
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{
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if ((width <= 0) || (height <= 0))
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return;
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int x2 = x + width - 1;
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int y2 = y + height - 1;
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lcd_vline(x, y, y2);
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lcd_vline(x2, y, y2);
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lcd_hline(x, x2, y);
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lcd_hline(x, x2, y2);
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}
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/* Draw a full native bitmap */
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void lcd_bitmap(const fb_data *src, int x, int y, int width, int height)
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{
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lcd_bitmap_part(src, 0, 0, STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
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}
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/* Draw a full native bitmap with a transparent color */
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void lcd_bitmap_transparent(const fb_data *src, int x, int y,
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int width, int height)
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{
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lcd_bitmap_transparent_part(src, 0, 0,
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STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
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}
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/* draw alpha bitmap for anti-alias font */
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void ICODE_ATTR lcd_alpha_bitmap_part(const unsigned char *src, int src_x,
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int src_y, int stride, int x, int y,
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int width, int height)
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{
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lcd_alpha_bitmap_part_mix(NULL, src, src_x, src_y, x, y, width, height, 0, stride);
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}
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/* Draw a partial bitmap (mono or native) including alpha channel */
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void ICODE_ATTR lcd_bmp_part(const struct bitmap* bm, int src_x, int src_y,
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int x, int y, int width, int height)
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{
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int bitmap_stride = LCD_FBSTRIDE(bm->width, bm->height);
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if (bm->format == FORMAT_MONO)
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lcd_mono_bitmap_part(bm->data, src_x, src_y, bm->width, x, y, width, height);
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else if (bm->alpha_offset > 0)
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lcd_alpha_bitmap_part_mix((fb_data*)bm->data, bm->data+bm->alpha_offset,
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src_x, src_y, x, y, width, height,
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bitmap_stride, ALIGN_UP(bm->width, 2));
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else
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lcd_bitmap_transparent_part((fb_data*)bm->data,
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src_x, src_y, bitmap_stride, x, y, width, height);
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}
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/* Draw a native bitmap with alpha channel */
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void ICODE_ATTR lcd_bmp(const struct bitmap *bmp, int x, int y)
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{
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lcd_bmp_part(bmp, 0, 0, x, y, bmp->width, bmp->height);
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}
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/**
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* |R| |1.000000 -0.000001 1.402000| |Y'|
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* |G| = |1.000000 -0.334136 -0.714136| |Pb|
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* |B| |1.000000 1.772000 0.000000| |Pr|
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* Scaled, normalized, rounded and tweaked to yield RGB 565:
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* |R| |74 0 101| |Y' - 16| >> 9
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* |G| = |74 -24 -51| |Cb - 128| >> 8
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* |B| |74 128 0| |Cr - 128| >> 9
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*/
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#define YFAC (74)
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#define RVFAC (101)
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#define GUFAC (-24)
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#define GVFAC (-51)
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#define BUFAC (128)
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static inline int clamp(int val, int min, int max)
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{
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if (val < min)
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val = min;
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else if (val > max)
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val = max;
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return val;
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}
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#ifndef _WIN32
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/*
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* weak attribute doesn't work for win32 as of gcc 4.6.2 and binutils 2.21.52
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* When building win32 simulators, we won't be using an optimized version of
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* lcd_blit_yuv(), so just don't use the weak attribute.
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*/
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__attribute__((weak))
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#endif
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void lcd_yuv_set_options(unsigned options)
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{
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(void)options;
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}
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/* Draw a partial YUV colour bitmap */
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#ifndef _WIN32
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__attribute__((weak))
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#endif
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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const unsigned char *ysrc, *usrc, *vsrc;
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int linecounter;
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fb_data *dst, *row_end;
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long z;
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/* width and height must be >= 2 and an even number */
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width &= ~1;
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linecounter = height >> 1;
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#if LCD_WIDTH >= LCD_HEIGHT
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dst = FBADDR(x, y);
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row_end = dst + width;
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#else
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dst = FBADDR(LCD_WIDTH - y - 1, x);
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row_end = dst + LCD_WIDTH * width;
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#endif
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z = stride * src_y;
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ysrc = src[0] + z + src_x;
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usrc = src[1] + (z >> 2) + (src_x >> 1);
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vsrc = src[2] + (usrc - src[1]);
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/* stride => amount to jump from end of last row to start of next */
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stride -= width;
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/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
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do
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{
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do
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{
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int y, cb, cr, rv, guv, bu, r, g, b;
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y = YFAC*(*ysrc++ - 16);
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cb = *usrc++ - 128;
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cr = *vsrc++ - 128;
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rv = RVFAC*cr;
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guv = GUFAC*cb + GVFAC*cr;
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bu = BUFAC*cb;
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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y = YFAC*(*ysrc++ - 16);
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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}
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while (dst < row_end);
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ysrc += stride;
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usrc -= width >> 1;
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vsrc -= width >> 1;
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#if LCD_WIDTH >= LCD_HEIGHT
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row_end += LCD_WIDTH;
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dst += LCD_WIDTH - width;
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#else
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row_end -= 1;
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dst -= LCD_WIDTH*width + 1;
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#endif
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do
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{
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int y, cb, cr, rv, guv, bu, r, g, b;
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y = YFAC*(*ysrc++ - 16);
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cb = *usrc++ - 128;
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cr = *vsrc++ - 128;
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rv = RVFAC*cr;
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guv = GUFAC*cb + GVFAC*cr;
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bu = BUFAC*cb;
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
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g = clamp(g, 0, 64*256-1);
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b = clamp(b, 0, 64*256-1);
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}
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*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
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#if LCD_WIDTH >= LCD_HEIGHT
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dst++;
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#else
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dst += LCD_WIDTH;
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#endif
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y = YFAC*(*ysrc++ - 16);
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r = y + rv;
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g = y + guv;
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b = y + bu;
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if ((unsigned)(r | g | b) > 64*256-1)
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{
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r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
}
|
|
while (dst < row_end);
|
|
|
|
ysrc += stride;
|
|
usrc += stride >> 1;
|
|
vsrc += stride >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
row_end += LCD_WIDTH;
|
|
dst += LCD_WIDTH - width;
|
|
#else
|
|
row_end -= 1;
|
|
dst -= LCD_WIDTH*width + 1;
|
|
#endif
|
|
}
|
|
while (--linecounter > 0);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
lcd_update_rect(x, y, width, height);
|
|
#else
|
|
lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
|
|
#endif
|
|
}
|
|
|
|
/* Fill a rectangle with a gradient. This function draws only the partial
|
|
* gradient. It assumes the original gradient is src_height high and skips
|
|
* the first few rows. This is useful for drawing only the bottom half of
|
|
* a full gradient.
|
|
*
|
|
* height == src_height and row_skip == 0 will draw the full gradient
|
|
*
|
|
* x, y, width, height - dimensions describing the rectangle
|
|
* start_rgb - beginning color of the gradient
|
|
* end_rgb - end color of the gradient
|
|
* src_height - assumed original height (only height rows will be drawn)
|
|
* row_skip - how many rows of the original gradient to skip
|
|
*/
|
|
void lcd_gradient_fillrect_part(int x, int y, int width, int height,
|
|
unsigned start_rgb, unsigned end_rgb, int src_height, int row_skip)
|
|
{
|
|
int old_pattern = lcd_current_viewport->fg_pattern;
|
|
int step_mul, i;
|
|
int x1, x2;
|
|
x1 = x;
|
|
x2 = x + width;
|
|
|
|
if (height == 0) return;
|
|
|
|
step_mul = (1 << 16) / src_height;
|
|
int h_r = RGB_UNPACK_RED(start_rgb);
|
|
int h_g = RGB_UNPACK_GREEN(start_rgb);
|
|
int h_b = RGB_UNPACK_BLUE(start_rgb);
|
|
int rstep = (h_r - RGB_UNPACK_RED(end_rgb)) * step_mul;
|
|
int gstep = (h_g - RGB_UNPACK_GREEN(end_rgb)) * step_mul;
|
|
int bstep = (h_b - RGB_UNPACK_BLUE(end_rgb)) * step_mul;
|
|
h_r = (h_r << 16) + (1 << 15);
|
|
h_g = (h_g << 16) + (1 << 15);
|
|
h_b = (h_b << 16) + (1 << 15);
|
|
|
|
if (row_skip > 0)
|
|
{
|
|
h_r -= rstep * row_skip;
|
|
h_g -= gstep * row_skip;
|
|
h_b -= bstep * row_skip;
|
|
}
|
|
|
|
for(i = y; i < y + height; i++) {
|
|
lcd_current_viewport->fg_pattern = LCD_RGBPACK(h_r >> 16, h_g >> 16, h_b >> 16);
|
|
lcd_hline(x1, x2, i);
|
|
h_r -= rstep;
|
|
h_g -= gstep;
|
|
h_b -= bstep;
|
|
}
|
|
|
|
lcd_current_viewport->fg_pattern = old_pattern;
|
|
}
|
|
|
|
/* Fill a rectangle with a gradient. The gradient's color will fade from
|
|
* start_rgb to end_rgb over the height of the rectangle
|
|
*
|
|
* x, y, width, height - dimensions describing the rectangle
|
|
* start_rgb - beginning color of the gradient
|
|
* end_rgb - end color of the gradient
|
|
*/
|
|
void lcd_gradient_fillrect(int x, int y, int width, int height,
|
|
unsigned start_rgb, unsigned end_rgb)
|
|
{
|
|
lcd_gradient_fillrect_part(x, y, width, height, start_rgb, end_rgb, height, 0);
|
|
}
|