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diff --git a/firmware/target/hosted/sdl/lcd-bitmap.c b/firmware/target/hosted/sdl/lcd-bitmap.c
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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2006 Dan Everton
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "debug.h"
23#include "sim-ui-defines.h"
24#include "system.h"
25#include "lcd-sdl.h"
26#include "screendump.h"
27
28SDL_Surface* lcd_surface;
29
30#if LCD_DEPTH <= 8
31#ifdef HAVE_BACKLIGHT
32SDL_Color lcd_bl_color_dark = {RED_CMP(LCD_BL_DARKCOLOR),
33 GREEN_CMP(LCD_BL_DARKCOLOR),
34 BLUE_CMP(LCD_BL_DARKCOLOR), 0};
35SDL_Color lcd_bl_color_bright = {RED_CMP(LCD_BL_BRIGHTCOLOR),
36 GREEN_CMP(LCD_BL_BRIGHTCOLOR),
37 BLUE_CMP(LCD_BL_BRIGHTCOLOR), 0};
38#ifdef HAVE_LCD_SPLIT
39SDL_Color lcd_bl_color2_dark = {RED_CMP(LCD_BL_DARKCOLOR_2),
40 GREEN_CMP(LCD_BL_DARKCOLOR_2),
41 BLUE_CMP(LCD_BL_DARKCOLOR_2), 0};
42SDL_Color lcd_bl_color2_bright = {RED_CMP(LCD_BL_BRIGHTCOLOR_2),
43 GREEN_CMP(LCD_BL_BRIGHTCOLOR_2),
44 BLUE_CMP(LCD_BL_BRIGHTCOLOR_2), 0};
45#endif
46#endif /* HAVE_BACKLIGHT */
47SDL_Color lcd_color_dark = {RED_CMP(LCD_DARKCOLOR),
48 GREEN_CMP(LCD_DARKCOLOR),
49 BLUE_CMP(LCD_DARKCOLOR), 0};
50SDL_Color lcd_color_bright = {RED_CMP(LCD_BRIGHTCOLOR),
51 GREEN_CMP(LCD_BRIGHTCOLOR),
52 BLUE_CMP(LCD_BRIGHTCOLOR), 0};
53#ifdef HAVE_LCD_SPLIT
54SDL_Color lcd_color2_dark = {RED_CMP(LCD_DARKCOLOR_2),
55 GREEN_CMP(LCD_DARKCOLOR_2),
56 BLUE_CMP(LCD_DARKCOLOR_2), 0};
57SDL_Color lcd_color2_bright = {RED_CMP(LCD_BRIGHTCOLOR_2),
58 GREEN_CMP(LCD_BRIGHTCOLOR_2),
59 BLUE_CMP(LCD_BRIGHTCOLOR_2), 0};
60#endif
61
62#ifdef HAVE_LCD_SPLIT
63#define NUM_SHADES 128
64#else
65#define NUM_SHADES 129
66#endif
67
68#else /* LCD_DEPTH > 8 */
69
70#ifdef HAVE_TRANSFLECTIVE_LCD
71#define BACKLIGHT_OFF_ALPHA 85 /* 1/3 brightness */
72#else
73#define BACKLIGHT_OFF_ALPHA 0 /* pitch black */
74#endif
75
76#endif /* LCD_DEPTH */
77
78#if LCD_DEPTH < 8
79unsigned long (*lcd_ex_getpixel)(int, int) = NULL;
80#endif /* LCD_DEPTH < 8 */
81
82#if LCD_DEPTH == 2
83/* Only defined for positive, non-split LCD for now */
84static const unsigned char colorindex[4] = {128, 85, 43, 0};
85#endif
86
87static unsigned long get_lcd_pixel(int x, int y)
88{
89#if LCD_DEPTH == 1
90#ifdef HAVE_NEGATIVE_LCD
91 return (lcd_framebuffer[y/8][x] & (1 << (y & 7))) ? (NUM_SHADES-1) : 0;
92#else
93 return (lcd_framebuffer[y/8][x] & (1 << (y & 7))) ? 0 : (NUM_SHADES-1);
94#endif
95#elif LCD_DEPTH == 2
96#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
97 return colorindex[(lcd_framebuffer[y][x/4] >> (2 * (~x & 3))) & 3];
98#elif LCD_PIXELFORMAT == VERTICAL_PACKING
99 return colorindex[(lcd_framebuffer[y/4][x] >> (2 * (y & 3))) & 3];
100#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
101 unsigned bits = (lcd_framebuffer[y/8][x] >> (y & 7)) & 0x0101;
102 return colorindex[(bits | (bits >> 7)) & 3];
103#endif
104#elif LCD_DEPTH == 16
105#if LCD_PIXELFORMAT == RGB565SWAPPED
106 unsigned bits = lcd_framebuffer[y][x];
107 return (bits >> 8) | (bits << 8);
108#else
109#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
110 return *(&lcd_framebuffer[0][0]+LCD_HEIGHT*x+y);
111#else
112 return lcd_framebuffer[y][x];
113#endif
114#endif
115#endif
116}
117
118void lcd_update(void)
119{
120 /* update a full screen rect */
121 lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
122}
123
124void lcd_update_rect(int x_start, int y_start, int width, int height)
125{
126 sdl_update_rect(lcd_surface, x_start, y_start, width, height,
127 LCD_WIDTH, LCD_HEIGHT, get_lcd_pixel);
128 sdl_gui_update(lcd_surface, x_start, y_start, width,
129 height + LCD_SPLIT_LINES, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
130 background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
131}
132
133#ifdef HAVE_BACKLIGHT
134void sim_backlight(int value)
135{
136#if LCD_DEPTH <= 8
137 if (value > 0) {
138 sdl_set_gradient(lcd_surface, &lcd_bl_color_dark,
139 &lcd_bl_color_bright, 0, NUM_SHADES);
140#ifdef HAVE_LCD_SPLIT
141 sdl_set_gradient(lcd_surface, &lcd_bl_color2_dark,
142 &lcd_bl_color2_bright, NUM_SHADES, NUM_SHADES);
143#endif
144 } else {
145 sdl_set_gradient(lcd_surface, &lcd_color_dark,
146 &lcd_color_bright, 0, NUM_SHADES);
147#ifdef HAVE_LCD_SPLIT
148 sdl_set_gradient(lcd_surface, &lcd_color2_dark,
149 &lcd_color2_bright, NUM_SHADES, NUM_SHADES);
150#endif
151 }
152#else /* LCD_DEPTH > 8 */
153 SDL_SetAlpha(lcd_surface, SDL_SRCALPHA, (value * 255) / 100);
154#endif /* LCD_DEPTH */
155
156 sdl_gui_update(lcd_surface, 0, 0, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
157 SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
158 background ? UI_LCD_POSX : 0, background? UI_LCD_POSY : 0);
159}
160#endif /* HAVE_BACKLIGHT */
161
162/* initialise simulator lcd driver */
163void sim_lcd_init(void)
164{
165#if LCD_DEPTH == 16
166 lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
167 SIM_LCD_WIDTH * display_zoom,
168 SIM_LCD_HEIGHT * display_zoom,
169 LCD_DEPTH, 0, 0, 0, 0);
170#elif LCD_DEPTH <= 8
171 lcd_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
172 SIM_LCD_WIDTH * display_zoom,
173 SIM_LCD_HEIGHT * display_zoom,
174 8, 0, 0, 0, 0);
175
176#ifdef HAVE_BACKLIGHT
177 sdl_set_gradient(lcd_surface, &lcd_bl_color_dark,
178 &lcd_bl_color_bright, 0, NUM_SHADES);
179#ifdef HAVE_LCD_SPLIT
180 sdl_set_gradient(lcd_surface, &lcd_bl_color2_dark,
181 &lcd_bl_color2_bright, NUM_SHADES, NUM_SHADES);
182#endif
183#else /* !HAVE_BACKLIGHT */
184 sdl_set_gradient(lcd_surface, &lcd_color_dark,
185 &lcd_color_bright, 0, NUM_SHADES);
186#ifdef HAVE_LCD_SPLIT
187 sdl_set_gradient(lcd_surface, &lcd_color2_dark,
188 &lcd_color2_bright, NUM_SHADES, NUM_SHADES);
189#endif
190#endif /* !HAVE_BACKLIGHT */
191#endif /* LCD_DEPTH */
192}
193
194#if LCD_DEPTH < 8
195void sim_lcd_ex_init(unsigned long (*getpixel)(int, int))
196{
197 lcd_ex_getpixel = getpixel;
198}
199
200void sim_lcd_ex_update_rect(int x_start, int y_start, int width, int height)
201{
202 if (lcd_ex_getpixel) {
203 sdl_update_rect(lcd_surface, x_start, y_start, width, height,
204 LCD_WIDTH, LCD_HEIGHT, lcd_ex_getpixel);
205 sdl_gui_update(lcd_surface, x_start, y_start, width,
206 height + LCD_SPLIT_LINES, SIM_LCD_WIDTH, SIM_LCD_HEIGHT,
207 background ? UI_LCD_POSX : 0,
208 background ? UI_LCD_POSY : 0);
209 }
210}
211#endif
212
213#ifdef HAVE_LCD_COLOR
214/**
215 * |R| |1.000000 -0.000001 1.402000| |Y'|
216 * |G| = |1.000000 -0.334136 -0.714136| |Pb|
217 * |B| |1.000000 1.772000 0.000000| |Pr|
218 * Scaled, normalized, rounded and tweaked to yield RGB 565:
219 * |R| |74 0 101| |Y' - 16| >> 9
220 * |G| = |74 -24 -51| |Cb - 128| >> 8
221 * |B| |74 128 0| |Cr - 128| >> 9
222 */
223#define YFAC (74)
224#define RVFAC (101)
225#define GUFAC (-24)
226#define GVFAC (-51)
227#define BUFAC (128)
228
229static inline int clamp(int val, int min, int max)
230{
231 if (val < min)
232 val = min;
233 else if (val > max)
234 val = max;
235 return val;
236}
237
238void lcd_yuv_set_options(unsigned options)
239{
240 (void)options;
241}
242
243/* Draw a partial YUV colour bitmap - similiar behavior to lcd_blit_yuv
244 in the core */
245void lcd_blit_yuv(unsigned char * const src[3],
246 int src_x, int src_y, int stride,
247 int x, int y, int width, int height)
248{
249 const unsigned char *ysrc, *usrc, *vsrc;
250 int linecounter;
251 fb_data *dst, *row_end;
252 long z;
253
254 /* width and height must be >= 2 and an even number */
255 width &= ~1;
256 linecounter = height >> 1;
257
258#if LCD_WIDTH >= LCD_HEIGHT
259 dst = &lcd_framebuffer[y][x];
260 row_end = dst + width;
261#else
262 dst = &lcd_framebuffer[x][LCD_WIDTH - y - 1];
263 row_end = dst + LCD_WIDTH * width;
264#endif
265
266 z = stride * src_y;
267 ysrc = src[0] + z + src_x;
268 usrc = src[1] + (z >> 2) + (src_x >> 1);
269 vsrc = src[2] + (usrc - src[1]);
270
271 /* stride => amount to jump from end of last row to start of next */
272 stride -= width;
273
274 /* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
275
276 do
277 {
278 do
279 {
280 int y, cb, cr, rv, guv, bu, r, g, b;
281
282 y = YFAC*(*ysrc++ - 16);
283 cb = *usrc++ - 128;
284 cr = *vsrc++ - 128;
285
286 rv = RVFAC*cr;
287 guv = GUFAC*cb + GVFAC*cr;
288 bu = BUFAC*cb;
289
290 r = y + rv;
291 g = y + guv;
292 b = y + bu;
293
294 if ((unsigned)(r | g | b) > 64*256-1)
295 {
296 r = clamp(r, 0, 64*256-1);
297 g = clamp(g, 0, 64*256-1);
298 b = clamp(b, 0, 64*256-1);
299 }
300
301 *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
302
303#if LCD_WIDTH >= LCD_HEIGHT
304 dst++;
305#else
306 dst += LCD_WIDTH;
307#endif
308
309 y = YFAC*(*ysrc++ - 16);
310 r = y + rv;
311 g = y + guv;
312 b = y + bu;
313
314 if ((unsigned)(r | g | b) > 64*256-1)
315 {
316 r = clamp(r, 0, 64*256-1);
317 g = clamp(g, 0, 64*256-1);
318 b = clamp(b, 0, 64*256-1);
319 }
320
321 *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
322
323#if LCD_WIDTH >= LCD_HEIGHT
324 dst++;
325#else
326 dst += LCD_WIDTH;
327#endif
328 }
329 while (dst < row_end);
330
331 ysrc += stride;
332 usrc -= width >> 1;
333 vsrc -= width >> 1;
334
335#if LCD_WIDTH >= LCD_HEIGHT
336 row_end += LCD_WIDTH;
337 dst += LCD_WIDTH - width;
338#else
339 row_end -= 1;
340 dst -= LCD_WIDTH*width + 1;
341#endif
342
343 do
344 {
345 int y, cb, cr, rv, guv, bu, r, g, b;
346
347 y = YFAC*(*ysrc++ - 16);
348 cb = *usrc++ - 128;
349 cr = *vsrc++ - 128;
350
351 rv = RVFAC*cr;
352 guv = GUFAC*cb + GVFAC*cr;
353 bu = BUFAC*cb;
354
355 r = y + rv;
356 g = y + guv;
357 b = y + bu;
358
359 if ((unsigned)(r | g | b) > 64*256-1)
360 {
361 r = clamp(r, 0, 64*256-1);
362 g = clamp(g, 0, 64*256-1);
363 b = clamp(b, 0, 64*256-1);
364 }
365
366 *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
367
368#if LCD_WIDTH >= LCD_HEIGHT
369 dst++;
370#else
371 dst += LCD_WIDTH;
372#endif
373
374 y = YFAC*(*ysrc++ - 16);
375 r = y + rv;
376 g = y + guv;
377 b = y + bu;
378
379 if ((unsigned)(r | g | b) > 64*256-1)
380 {
381 r = clamp(r, 0, 64*256-1);
382 g = clamp(g, 0, 64*256-1);
383 b = clamp(b, 0, 64*256-1);
384 }
385
386 *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
387
388#if LCD_WIDTH >= LCD_HEIGHT
389 dst++;
390#else
391 dst += LCD_WIDTH;
392#endif
393 }
394 while (dst < row_end);
395
396 ysrc += stride;
397 usrc += stride >> 1;
398 vsrc += stride >> 1;
399
400#if LCD_WIDTH >= LCD_HEIGHT
401 row_end += LCD_WIDTH;
402 dst += LCD_WIDTH - width;
403#else
404 row_end -= 1;
405 dst -= LCD_WIDTH*width + 1;
406#endif
407 }
408 while (--linecounter > 0);
409
410#if LCD_WIDTH >= LCD_HEIGHT
411 lcd_update_rect(x, y, width, height);
412#else
413 lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
414#endif
415}
416#endif /* HAVE_LCD_COLOR */
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