summaryrefslogtreecommitdiffstats
path: root/firmware/target/hosted/sdl/lcd-bitmap.c
blob: 6dfbffff37be0c291f5766f963988698589ba399 (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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
/***************************************************************************
 *             __________               __   ___.
 *   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 "lcd-sdl.h"
#include "screendump.h"

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 (lcd_framebuffer[y/8][x] & (1 << (y & 7))) ? (NUM_SHADES-1) : 0;
#else
    return (lcd_framebuffer[y/8][x] & (1 << (y & 7))) ? 0 : (NUM_SHADES-1);
#endif
#elif LCD_DEPTH == 2
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
    return colorindex[(lcd_framebuffer[y][x/4] >> (2 * (~x & 3))) & 3];
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
    return colorindex[(lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3];
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
    unsigned bits = (lcd_framebuffer[y/8][x] >> (y & 7)) & 0x0101;
    return colorindex[(bits | (bits >> 7)) & 3];
#endif
#elif LCD_DEPTH == 16
#if LCD_PIXELFORMAT == RGB565SWAPPED
    unsigned bits = lcd_framebuffer[y][x];
    return (bits >> 8) | (bits << 8);
#else
#if   defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
    return *(&lcd_framebuffer[0][0]+LCD_HEIGHT*x+y);
#else
    return lcd_framebuffer[y][x];
#endif
#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_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 sim_lcd_init(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

#ifdef HAVE_LCD_COLOR
/**
 * |R|   |1.000000 -0.000001  1.402000| |Y'|
 * |G| = |1.000000 -0.334136 -0.714136| |Pb|
 * |B|   |1.000000  1.772000  0.000000| |Pr|
 * Scaled, normalized, rounded and tweaked to yield RGB 565:
 * |R|   |74   0 101| |Y' -  16| >> 9
 * |G| = |74 -24 -51| |Cb - 128| >> 8
 * |B|   |74 128   0| |Cr - 128| >> 9
 */
#define YFAC    (74)
#define RVFAC   (101)
#define GUFAC   (-24)
#define GVFAC   (-51)
#define BUFAC   (128)

static inline int clamp(int val, int min, int max)
{
    if (val < min)
        val = min;
    else if (val > max)
        val = max;
    return val;
}

void lcd_yuv_set_options(unsigned options)
{
    (void)options;
}

/* Draw a partial YUV colour bitmap - similiar behavior to lcd_blit_yuv
   in the core */
void lcd_blit_yuv(unsigned char * const src[3],
                  int src_x, int src_y, int stride,
                  int x, int y, int width, int height)
{
    const unsigned char *ysrc, *usrc, *vsrc;
    int linecounter;
    fb_data *dst, *row_end;
    long z;

    /* width and height must be >= 2 and an even number */
    width &= ~1;
    linecounter = height >> 1;

#if LCD_WIDTH >= LCD_HEIGHT
    dst     = &lcd_framebuffer[y][x];
    row_end = dst + width;
#else
    dst     = &lcd_framebuffer[x][LCD_WIDTH - y - 1];
    row_end = dst + LCD_WIDTH * width;
#endif

    z    = stride * src_y;
    ysrc = src[0] + z + src_x;
    usrc = src[1] + (z >> 2) + (src_x >> 1);
    vsrc = src[2] + (usrc - src[1]);

    /* stride => amount to jump from end of last row to start of next */
    stride -= width;

    /* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */

    do
    {
        do
        {
            int y, cb, cr, rv, guv, bu, r, g, b;

            y  = YFAC*(*ysrc++ - 16);
            cb = *usrc++ - 128;
            cr = *vsrc++ - 128;

            rv  =            RVFAC*cr;
            guv = GUFAC*cb + GVFAC*cr;
            bu  = BUFAC*cb;

            r = y + rv;
            g = y + guv;
            b = y + bu;

            if ((unsigned)(r | g | b) > 64*256-1)
            {
                r = clamp(r, 0, 64*256-1);
                g = clamp(g, 0, 64*256-1);
                b = clamp(b, 0, 64*256-1);
            }

            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);

#if LCD_WIDTH >= LCD_HEIGHT
            dst++;
#else
            dst += LCD_WIDTH;
#endif

            y = YFAC*(*ysrc++ - 16);
            r = y + rv;
            g = y + guv;
            b = y + bu;

            if ((unsigned)(r | g | b) > 64*256-1)
            {
                r = clamp(r, 0, 64*256-1);
                g = clamp(g, 0, 64*256-1);
                b = clamp(b, 0, 64*256-1);
            }

            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);

#if LCD_WIDTH >= LCD_HEIGHT
            dst++;
#else
            dst += LCD_WIDTH;
#endif
        }
        while (dst < row_end);

        ysrc    += stride;
        usrc    -= width >> 1;
        vsrc    -= width >> 1;

#if LCD_WIDTH >= LCD_HEIGHT
        row_end += LCD_WIDTH;
        dst     += LCD_WIDTH - width;
#else
        row_end -= 1;
        dst     -= LCD_WIDTH*width + 1;
#endif

        do
        {
            int y, cb, cr, rv, guv, bu, r, g, b;

            y  = YFAC*(*ysrc++ - 16);
            cb = *usrc++ - 128;
            cr = *vsrc++ - 128;

            rv  =            RVFAC*cr;
            guv = GUFAC*cb + GVFAC*cr;
            bu  = BUFAC*cb;

            r = y + rv;
            g = y + guv;
            b = y + bu;

            if ((unsigned)(r | g | b) > 64*256-1)
            {
                r = clamp(r, 0, 64*256-1);
                g = clamp(g, 0, 64*256-1);
                b = clamp(b, 0, 64*256-1);
            }

            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);

#if LCD_WIDTH >= LCD_HEIGHT
            dst++;
#else
            dst += LCD_WIDTH;
#endif

            y = YFAC*(*ysrc++ - 16);
            r = y + rv;
            g = y + guv;
            b = y + bu;

            if ((unsigned)(r | g | b) > 64*256-1)
            {
                r = clamp(r, 0, 64*256-1);
                g = clamp(g, 0, 64*256-1);
                b = clamp(b, 0, 64*256-1);
            }

            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);

#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
}
#endif /* HAVE_LCD_COLOR */