summaryrefslogtreecommitdiffstats
path: root/uisimulator/sdl/lcd-bitmap.c
blob: da4050461c3a30b4cae959d87ba8c5ccde50b0b6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2006 Dan Everton
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include "debug.h"
#include "uisdl.h"
#include "lcd-sdl.h"

SDL_Surface* lcd_surface;
int lcd_backlight_val;

#if LCD_DEPTH <= 8
SDL_Color lcd_color_zero = {UI_LCD_BGCOLOR, 0};
SDL_Color lcd_backlight_color_zero = {UI_LCD_BGCOLORLIGHT, 0};
SDL_Color lcd_color_max  = {0, 0, 0, 0};
#endif

#if LCD_DEPTH < 8
int lcd_ex_shades = 0;
unsigned long (*lcd_ex_getpixel)(int, int) = NULL;
#endif

static unsigned long get_lcd_pixel(int x, int y)
{
#if LCD_DEPTH == 1
    return ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1);
#elif LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
    return ((lcd_framebuffer[y][x/4] >> (2 * (~x & 3))) & 3);
#else
    return ((lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3);
#endif
#elif LCD_DEPTH == 16
#if LCD_PIXELFORMAT == RGB565SWAPPED
    unsigned bits = lcd_framebuffer[y][x];
    return (bits >> 8) | (bits << 8);
#else
    return lcd_framebuffer[y][x];
#endif
#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)
{
    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_WIDTH,
                   LCD_HEIGHT, background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
}

#ifdef CONFIG_BACKLIGHT
void sim_backlight(int value)
{
    lcd_backlight_val = value;

#if LCD_DEPTH <= 8
    if (value > 0) {
        sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero,
                         &lcd_color_max, 0, (1<<LCD_DEPTH));
    } else {
        sdl_set_gradient(lcd_surface, &lcd_color_zero, &lcd_color_max,
                         0, (1<<LCD_DEPTH));
    }
#if LCD_DEPTH < 8
    if (lcd_ex_shades) {
        if (value > 0) {
            sdl_set_gradient(lcd_surface, &lcd_color_max,
                             &lcd_backlight_color_zero, (1<<LCD_DEPTH),
                             lcd_ex_shades);
        } else {
            sdl_set_gradient(lcd_surface, &lcd_color_max, &lcd_color_zero,
                             (1<<LCD_DEPTH), lcd_ex_shades);
        }
    }
#endif

    sdl_gui_update(lcd_surface, 0, 0, LCD_WIDTH, LCD_HEIGHT, LCD_WIDTH,
                   LCD_HEIGHT, background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);

#else
    DEBUGF("backlight: %s\n", (value > 0) ? "on" : "off");
#endif
}
#endif

/* initialise simulator lcd driver */
void sim_lcd_init(void)
{
#if LCD_DEPTH == 16
    lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE, LCD_WIDTH * display_zoom,
        LCD_HEIGHT * display_zoom, LCD_DEPTH, 0, 0, 0, 0);
#else
    lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE, LCD_WIDTH * display_zoom,
        LCD_HEIGHT * display_zoom, 8, 0, 0, 0, 0);
#endif

#if LCD_DEPTH <= 8
    sdl_set_gradient(lcd_surface, &lcd_backlight_color_zero, &lcd_color_max,
                     0, (1<<LCD_DEPTH));
#endif
}

#if LCD_DEPTH < 8
void sim_lcd_ex_init(int shades, unsigned long (*getpixel)(int, int))
{
    lcd_ex_shades = shades;
    lcd_ex_getpixel = getpixel;
    if (shades) {
#ifdef CONFIG_BACKLIGHT
        if (lcd_backlight_val > 0) {
            sdl_set_gradient(lcd_surface, &lcd_color_max,
                             &lcd_backlight_color_zero, (1<<LCD_DEPTH),
                             shades);
        }
        else 
#endif
        {
            sdl_set_gradient(lcd_surface, &lcd_color_max, &lcd_color_zero,
                             (1<<LCD_DEPTH), shades);
        }
    }
}

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_WIDTH,
                       LCD_HEIGHT, background ? UI_LCD_POSX : 0,
                       background? UI_LCD_POSY : 0);
    }
}
#endif