rockbox/firmware/target/hosted/sdl/lcd-bitmap.c
Thomas Martitz a1842c04f9 lcd-24bit: Introduce a 24-bit mid-level LCD driver
With LCD driver all calculation will be performed on RGB888 and the hardware/OS
can display from our 24bit framebuffer.

It is not yet as performance optimized as the existing drivers but should be
good enough.The vast number of small changes is due to the fact that
fb_data can be a struct type now, while most of the code expected a scalar type.

lcd-as-memframe ASM code does not work with 24bit currently so the with 24bit
it enforces the generic C code.

All plugins are ported over. Except for rockpaint. It uses so much memory that
it wouldnt fit into the 512k plugin buffer anymore (patches welcome).

Change-Id: Ibb1964545028ce0d8ff9833ccc3ab66be3ee0754
2014-06-21 00:15:53 +02:00

223 lines
7.7 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Dan Everton
*
* 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 "debug.h"
#include "sim-ui-defines.h"
#include "system.h"
#include "button-sdl.h"
#include "lcd-sdl.h"
#include "screendump.h"
#if (CONFIG_PLATFORM & PLATFORM_MAEMO)
#include "maemo-thread.h"
#endif
SDL_Surface* lcd_surface;
#if LCD_DEPTH <= 8
#ifdef HAVE_BACKLIGHT
SDL_Color lcd_bl_color_dark = {RED_CMP(LCD_BL_DARKCOLOR),
GREEN_CMP(LCD_BL_DARKCOLOR),
BLUE_CMP(LCD_BL_DARKCOLOR), 0};
SDL_Color lcd_bl_color_bright = {RED_CMP(LCD_BL_BRIGHTCOLOR),
GREEN_CMP(LCD_BL_BRIGHTCOLOR),
BLUE_CMP(LCD_BL_BRIGHTCOLOR), 0};
#ifdef HAVE_LCD_SPLIT
SDL_Color lcd_bl_color2_dark = {RED_CMP(LCD_BL_DARKCOLOR_2),
GREEN_CMP(LCD_BL_DARKCOLOR_2),
BLUE_CMP(LCD_BL_DARKCOLOR_2), 0};
SDL_Color lcd_bl_color2_bright = {RED_CMP(LCD_BL_BRIGHTCOLOR_2),
GREEN_CMP(LCD_BL_BRIGHTCOLOR_2),
BLUE_CMP(LCD_BL_BRIGHTCOLOR_2), 0};
#endif
#endif /* HAVE_BACKLIGHT */
SDL_Color lcd_color_dark = {RED_CMP(LCD_DARKCOLOR),
GREEN_CMP(LCD_DARKCOLOR),
BLUE_CMP(LCD_DARKCOLOR), 0};
SDL_Color lcd_color_bright = {RED_CMP(LCD_BRIGHTCOLOR),
GREEN_CMP(LCD_BRIGHTCOLOR),
BLUE_CMP(LCD_BRIGHTCOLOR), 0};
#ifdef HAVE_LCD_SPLIT
SDL_Color lcd_color2_dark = {RED_CMP(LCD_DARKCOLOR_2),
GREEN_CMP(LCD_DARKCOLOR_2),
BLUE_CMP(LCD_DARKCOLOR_2), 0};
SDL_Color lcd_color2_bright = {RED_CMP(LCD_BRIGHTCOLOR_2),
GREEN_CMP(LCD_BRIGHTCOLOR_2),
BLUE_CMP(LCD_BRIGHTCOLOR_2), 0};
#endif
#ifdef HAVE_LCD_SPLIT
#define NUM_SHADES 128
#else
#define NUM_SHADES 129
#endif
#else /* LCD_DEPTH > 8 */
#ifdef HAVE_TRANSFLECTIVE_LCD
#define BACKLIGHT_OFF_ALPHA 85 /* 1/3 brightness */
#else
#define BACKLIGHT_OFF_ALPHA 0 /* pitch black */
#endif
#endif /* LCD_DEPTH */
#if LCD_DEPTH < 8
unsigned long (*lcd_ex_getpixel)(int, int) = NULL;
#endif /* LCD_DEPTH < 8 */
#if LCD_DEPTH == 2
/* Only defined for positive, non-split LCD for now */
static const unsigned char colorindex[4] = {128, 85, 43, 0};
#endif
static unsigned long get_lcd_pixel(int x, int y)
{
#if LCD_DEPTH == 1
#ifdef HAVE_NEGATIVE_LCD
return (*FBADDR(x, y/8) & (1 << (y & 7))) ? (NUM_SHADES-1) : 0;
#else
return (*FBADDR(x, y/8) & (1 << (y & 7))) ? 0 : (NUM_SHADES-1);
#endif
#elif LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
return colorindex[(*FBADDR(x/4, y) >> (2 * (~x & 3))) & 3];
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
return colorindex[(*FBADDR(x, y/4) >> (2 * (y & 3))) & 3];
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
unsigned bits = (*FBADDR(x, y/8) >> (y & 7)) & 0x0101;
return colorindex[(bits | (bits >> 7)) & 3];
#endif
#elif LCD_DEPTH == 16
#if LCD_PIXELFORMAT == RGB565SWAPPED
unsigned bits = *FBADDR(x, y);
return (bits >> 8) | (bits << 8);
#else
return *FBADDR(x, y);
#endif
#elif LCD_DEPTH == 24
return FB_UNPACK_SCALAR_LCD(*FBADDR(x, y));
#endif
}
void lcd_update(void)
{
/* update a full screen rect */
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
void lcd_update_rect(int x_start, int y_start, int width, int height)
{
#if (CONFIG_PLATFORM & PLATFORM_MAEMO)
/* Don't update display if not shown */
if (!maemo_display_on)
return;
/* Don't update if we don't have the input focus */
if (!sdl_app_has_input_focus)
return;
#endif
sdl_update_rect(lcd_surface, x_start, y_start, width, height,
LCD_WIDTH, LCD_HEIGHT, get_lcd_pixel);
sdl_gui_update(lcd_surface, x_start, y_start, width,
height + LCD_SPLIT_LINES, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
}
#ifdef HAVE_BACKLIGHT
void sim_backlight(int value)
{
#if LCD_DEPTH <= 8
if (value > 0) {
sdl_set_gradient(lcd_surface, &lcd_bl_color_dark,
&lcd_bl_color_bright, 0, NUM_SHADES);
#ifdef HAVE_LCD_SPLIT
sdl_set_gradient(lcd_surface, &lcd_bl_color2_dark,
&lcd_bl_color2_bright, NUM_SHADES, NUM_SHADES);
#endif
} else {
sdl_set_gradient(lcd_surface, &lcd_color_dark,
&lcd_color_bright, 0, NUM_SHADES);
#ifdef HAVE_LCD_SPLIT
sdl_set_gradient(lcd_surface, &lcd_color2_dark,
&lcd_color2_bright, NUM_SHADES, NUM_SHADES);
#endif
}
#else /* LCD_DEPTH > 8 */
SDL_SetAlpha(lcd_surface, SDL_SRCALPHA, (value * 255) / 100);
#endif /* LCD_DEPTH */
sdl_gui_update(lcd_surface, 0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
}
#endif /* HAVE_BACKLIGHT */
/* initialise simulator lcd driver */
void lcd_init_device(void)
{
#if LCD_DEPTH >= 16
lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
SIM_LCD_WIDTH * display_zoom,
SIM_LCD_HEIGHT * display_zoom,
LCD_DEPTH, 0, 0, 0, 0);
#elif LCD_DEPTH <= 8
lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
SIM_LCD_WIDTH * display_zoom,
SIM_LCD_HEIGHT * display_zoom,
8, 0, 0, 0, 0);
#ifdef HAVE_BACKLIGHT
sdl_set_gradient(lcd_surface, &lcd_bl_color_dark,
&lcd_bl_color_bright, 0, NUM_SHADES);
#ifdef HAVE_LCD_SPLIT
sdl_set_gradient(lcd_surface, &lcd_bl_color2_dark,
&lcd_bl_color2_bright, NUM_SHADES, NUM_SHADES);
#endif
#else /* !HAVE_BACKLIGHT */
sdl_set_gradient(lcd_surface, &lcd_color_dark,
&lcd_color_bright, 0, NUM_SHADES);
#ifdef HAVE_LCD_SPLIT
sdl_set_gradient(lcd_surface, &lcd_color2_dark,
&lcd_color2_bright, NUM_SHADES, NUM_SHADES);
#endif
#endif /* !HAVE_BACKLIGHT */
#endif /* LCD_DEPTH */
}
#if LCD_DEPTH < 8
void sim_lcd_ex_init(unsigned long (*getpixel)(int, int))
{
lcd_ex_getpixel = getpixel;
}
void sim_lcd_ex_update_rect(int x_start, int y_start, int width, int height)
{
if (lcd_ex_getpixel) {
sdl_update_rect(lcd_surface, x_start, y_start, width, height,
LCD_WIDTH, LCD_HEIGHT, lcd_ex_getpixel);
sdl_gui_update(lcd_surface, x_start, y_start, width,
height + LCD_SPLIT_LINES, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
background ? UI_LCD_POSX : 0,
background ? UI_LCD_POSY : 0);
}
}
#endif