diff options
Diffstat (limited to 'apps/plugins/lua/rocklib.c')
-rw-r--r-- | apps/plugins/lua/rocklib.c | 1253 |
1 files changed, 1165 insertions, 88 deletions
diff --git a/apps/plugins/lua/rocklib.c b/apps/plugins/lua/rocklib.c index 2268063d3f..ced83a51df 100644 --- a/apps/plugins/lua/rocklib.c +++ b/apps/plugins/lua/rocklib.c | |||
@@ -9,6 +9,7 @@ | |||
9 | * | 9 | * |
10 | * Copyright (C) 2008 Dan Everton (safetydan) | 10 | * Copyright (C) 2008 Dan Everton (safetydan) |
11 | * Copyright (C) 2009 Maurus Cuelenaere | 11 | * Copyright (C) 2009 Maurus Cuelenaere |
12 | * Copyright (C) 2017 William Wilgus | ||
12 | * | 13 | * |
13 | * This program is free software; you can redistribute it and/or | 14 | * This program is free software; you can redistribute it and/or |
14 | * modify it under the terms of the GNU General Public License | 15 | * modify it under the terms of the GNU General Public License |
@@ -47,127 +48,1215 @@ | |||
47 | 48 | ||
48 | 49 | ||
49 | /* | 50 | /* |
50 | * ----------------------------- | 51 | * ----------------------------------------------------------------------------- |
51 | * | 52 | * |
52 | * Rockbox Lua image wrapper | 53 | * Rockbox Lua image wrapper |
53 | * | 54 | * |
54 | * ----------------------------- | 55 | * Some devices(1-bit / 2-bit displays) have packed bit formats that |
56 | * need to be unpacked in order to work on them at a pixel level. | ||
57 | * | ||
58 | * The internal formats of these devices do not follow the same paradigm | ||
59 | * for image sizes either; We still display the actual width and height to | ||
60 | * the user but store stride based on the native values | ||
61 | * | ||
62 | * Conversion between native addressing and per pixel addressing | ||
63 | * incurs extra overhead but it is much faster to do it | ||
64 | * on the 'C' side rather than in lua. | ||
65 | * | ||
66 | * ----------------------------------------------------------------------------- | ||
55 | */ | 67 | */ |
56 | 68 | ||
69 | #ifdef HAVE_LCD_BITMAP | ||
70 | #define RLI_EXTENDED | ||
71 | #endif | ||
72 | |||
57 | #define ROCKLUA_IMAGE "rb.image" | 73 | #define ROCKLUA_IMAGE "rb.image" |
74 | #define ERR_IDX_RANGE "index out of range" | ||
75 | #define ERR_DATA_OVF "data overflow" | ||
76 | |||
77 | /* mark for RLI to LUA Interface functions (luaState *L) is the only argument */ | ||
78 | #define RLI_LUA static int | ||
79 | |||
80 | #ifndef ABS | ||
81 | #define ABS(a)(((a) < 0) ? - (a) :(a)) | ||
82 | #endif | ||
83 | |||
84 | #ifndef LCD_BLACK | ||
85 | #define LCD_BLACK 0x0 | ||
86 | #endif | ||
87 | |||
58 | struct rocklua_image | 88 | struct rocklua_image |
59 | { | 89 | { |
60 | int width; | 90 | int width; |
61 | int height; | 91 | int height; |
92 | int stride; | ||
93 | size_t elems; | ||
62 | fb_data *data; | 94 | fb_data *data; |
63 | fb_data dummy[1][1]; | 95 | fb_data dummy[1]; |
64 | }; | 96 | }; |
65 | 97 | ||
66 | static void rli_wrap(lua_State *L, fb_data *src, int width, int height) | 98 | /* holds iterator data for rlimages */ |
99 | struct rli_iter_d | ||
67 | { | 100 | { |
68 | struct rocklua_image *a = (struct rocklua_image *)lua_newuserdata(L, sizeof(struct rocklua_image)); | 101 | struct rocklua_image *img; |
102 | fb_data *elem; | ||
103 | int x , y; | ||
104 | int x1, y1; | ||
105 | int x2, y2; | ||
106 | int dx, dy; | ||
107 | }; | ||
69 | 108 | ||
70 | luaL_getmetatable(L, ROCKLUA_IMAGE); | 109 | /* __tostring information enums */ |
71 | lua_setmetatable(L, -2); | 110 | enum rli_info {RLI_INFO_ALL = 0, RLI_INFO_TYPE, RLI_INFO_WIDTH, |
111 | RLI_INFO_HEIGHT, RLI_INFO_ELEMS, RLI_INFO_BYTES, | ||
112 | RLI_INFO_DEPTH, RLI_INFO_FORMAT, RLI_INFO_ADDRESS}; | ||
72 | 113 | ||
73 | a->width = width; | 114 | #ifdef HAVE_LCD_COLOR |
74 | a->height = height; | 115 | |
75 | a->data = src; | 116 | static inline unsigned invert_color(unsigned rgb) |
117 | { | ||
118 | uint8_t r = 0xFFU - RGB_UNPACK_RED((unsigned) rgb); | ||
119 | uint8_t g = 0xFFU - RGB_UNPACK_GREEN((unsigned) rgb); | ||
120 | uint8_t b = 0xFFU - RGB_UNPACK_BLUE((unsigned) rgb); | ||
121 | |||
122 | return LCD_RGBPACK(r, g, b); | ||
76 | } | 123 | } |
124 | #else /* !HAVE_LCD_COLOR */ | ||
125 | |||
126 | #define invert_color(c) (~c) | ||
127 | |||
128 | #endif /* HAVE_LCD_COLOR */ | ||
129 | |||
130 | |||
131 | #if (LCD_DEPTH > 2) /* no native to pixel mapping needed */ | ||
132 | |||
133 | #define pixel_to_fb(x, y, o, n) {(void) x; (void) y; do { } while (0);} | ||
134 | #define pixel_to_native(x, y, xn, yn) {*xn = x; *yn = y;} | ||
135 | #define init_pixelmask(x, y, m, p) do { } while (0) | ||
136 | |||
137 | |||
138 | #else /* some devices need x | y coords shifted to match native format */ | ||
139 | |||
140 | static fb_data x_shift = 0; | ||
141 | static fb_data y_shift = 0; | ||
142 | static fb_data xy_mask = 0; | ||
143 | static const fb_data *pixelmask = NULL; | ||
144 | |||
145 | /* conversion between packed native formats and individual pixel addressing */ | ||
146 | static inline void init_pixelmask(fb_data *x_shift, fb_data *y_shift, | ||
147 | fb_data *xy_mask, const fb_data **pixelmask) | ||
148 | { | ||
149 | |||
150 | #if(LCD_PIXELFORMAT == VERTICAL_PACKING) && LCD_DEPTH == 1 | ||
151 | static const fb_data pixelmask_v1[8] = | ||
152 | {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; | ||
153 | *pixelmask = pixelmask_v1; | ||
154 | |||
155 | (void) x_shift; | ||
156 | *y_shift = 3U; | ||
157 | *xy_mask = ((1 << (*y_shift)) - 1); | ||
158 | #elif(LCD_PIXELFORMAT == VERTICAL_PACKING) && LCD_DEPTH == 2 | ||
159 | static const fb_data pixelmask_v2[4] = {0x03, 0x0C, 0x30, 0xC0}; | ||
160 | *pixelmask = pixelmask_v2; | ||
161 | |||
162 | (void) x_shift; | ||
163 | *y_shift = 2U; | ||
164 | *xy_mask = ((1 << (*y_shift)) - 1); | ||
165 | #elif(LCD_PIXELFORMAT == VERTICAL_INTERLEAVED) && LCD_DEPTH == 2 | ||
166 | static const fb_data pixelmask_vi2[8] = | ||
167 | {0x0101, 0x0202, 0x0404, 0x0808, 0x1010, 0x2020, 0x4040, 0x8080}; | ||
168 | *pixelmask = pixelmask_vi2; | ||
169 | |||
170 | (void) x_shift; | ||
171 | *y_shift = 3U; | ||
172 | *xy_mask = ((1 << (*y_shift)) - 1); | ||
173 | #elif(LCD_PIXELFORMAT == HORIZONTAL_PACKING) && LCD_DEPTH == 2 | ||
174 | /* MSB on left */ | ||
175 | static const fb_data pixelmask_h2[4] = {0x03, 0x0C, 0x30, 0xC0}; | ||
176 | *pixelmask = pixelmask_h2; | ||
177 | |||
178 | (void) y_shift; | ||
179 | *x_shift = 2U; | ||
180 | *xy_mask = ((1 << (*x_shift)) - 1); | ||
181 | #else | ||
182 | #warning Unknown Pixel Format | ||
183 | #endif /* LCD_PIXELFORMAT */ | ||
184 | |||
185 | } /* init_pixelmask */ | ||
186 | |||
187 | static inline void pixel_to_native(int x, int y, int *x_native, int *y_native) | ||
188 | { | ||
189 | *x_native = ((x - 1) >> x_shift) + 1; | ||
190 | *y_native = ((y - 1) >> y_shift) + 1; | ||
191 | } /* pixel_to_native */ | ||
192 | |||
193 | static inline fb_data set_masked_pixel(fb_data old, | ||
194 | fb_data new, | ||
195 | fb_data mask, | ||
196 | int bit_n) | ||
197 | { | ||
198 | /*equivalent of: (old & (~mask)) | ((new << bit_n) & mask);*/ | ||
199 | return old ^ ((old ^ (new << bit_n)) & mask); | ||
200 | |||
201 | } /* set_masked_pixel */ | ||
202 | |||
203 | static inline fb_data get_masked_pixel(fb_data val, fb_data mask, int bit_n) | ||
204 | { | ||
205 | val = val & mask; | ||
206 | return val >> bit_n; | ||
207 | } /* get_masked_pixel */ | ||
208 | |||
209 | /* conversion between packed native formats and individual pixel addressing */ | ||
210 | static void pixel_to_fb(int x, int y, fb_data *oldv, fb_data *newv) | ||
211 | { | ||
212 | fb_data mask; | ||
213 | int bit_n; | ||
214 | |||
215 | #if(LCD_PIXELFORMAT == VERTICAL_INTERLEAVED) && LCD_DEPTH == 2 | ||
216 | (void) x; | ||
217 | const uint16_t greymap_vi2[4] = {0x0000, 0x0001, 0x0100, 0x0101}; | ||
218 | |||
219 | bit_n = (y - 1) & xy_mask; | ||
220 | mask = pixelmask[bit_n]; | ||
221 | |||
222 | *newv = greymap_vi2[*newv &(0x3)]; /* [0-3] => greymap */ | ||
223 | *newv = set_masked_pixel(*oldv, *newv, mask, bit_n); | ||
224 | |||
225 | *oldv = get_masked_pixel(*oldv, mask, bit_n); | ||
226 | |||
227 | if((*oldv) > 1) /* greymap => [0-3] */ | ||
228 | *oldv = ((*oldv) & 0x1U) + 2U; /* 2, 3 */ | ||
229 | else | ||
230 | *oldv &= 1U; /* 0, 1 */ | ||
231 | |||
232 | #elif(LCD_DEPTH <= 2) | ||
233 | if(y_shift) | ||
234 | bit_n = (y - 1) & xy_mask; | ||
235 | else if(x_shift) | ||
236 | bit_n = xy_mask - ((x - 1) & xy_mask); /*MSB on left*/ | ||
237 | |||
238 | if(y_shift || x_shift) | ||
239 | { | ||
240 | mask = pixelmask[bit_n]; | ||
241 | bit_n *= LCD_DEPTH; | ||
242 | |||
243 | *newv = set_masked_pixel(*oldv, *newv, mask, bit_n); | ||
77 | 244 | ||
78 | static fb_data* rli_alloc(lua_State *L, int width, int height) | 245 | *oldv = get_masked_pixel(*oldv, mask, bit_n); |
246 | } | ||
247 | #else | ||
248 | #error Unknown Pixel Format | ||
249 | #endif /* LCD_PIXELFORMAT == VERTICAL_INTERLEAVED && LCD_DEPTH == 2 */ | ||
250 | } /* pixel_to_fb */ | ||
251 | |||
252 | #endif /* (LCD_DEPTH > 2) no native to pixel mapping needed */ | ||
253 | |||
254 | /* Internal worker functions for image data array *****************************/ | ||
255 | |||
256 | static inline void swap_int(bool swap, int *v1, int *v2) | ||
79 | { | 257 | { |
80 | size_t nbytes = sizeof(struct rocklua_image) + ((width*height) - 1) * sizeof(fb_data); | 258 | if(swap) |
81 | struct rocklua_image *a = (struct rocklua_image *)lua_newuserdata(L, nbytes); | 259 | { |
260 | int val = *v1; | ||
261 | *v1 = *v2; | ||
262 | *v2 = val; | ||
263 | } | ||
264 | } /* swap_int */ | ||
265 | |||
266 | /* Throws error if x or y are out of bounds notifies user which narg indice | ||
267 | the out of bound variable originated */ | ||
268 | static void bounds_check_xy(lua_State *L, struct rocklua_image *img, | ||
269 | int nargx, int x, int nargy, int y) | ||
270 | { | ||
271 | luaL_argcheck(L, x <= img->width && x > 0, nargx, ERR_IDX_RANGE); | ||
272 | luaL_argcheck(L, y <= img->height && y > 0, nargy, ERR_IDX_RANGE); | ||
273 | } /* bounds_check_xy */ | ||
274 | |||
275 | static struct rocklua_image* rli_checktype(lua_State *L, int arg) | ||
276 | { | ||
277 | void *ud = luaL_checkudata(L, arg, ROCKLUA_IMAGE); | ||
278 | |||
279 | luaL_argcheck(L, ud != NULL, arg, "'" ROCKLUA_IMAGE "' expected"); | ||
280 | |||
281 | return (struct rocklua_image*) ud; | ||
282 | } /* rli_checktype */ | ||
283 | |||
284 | static struct rocklua_image * alloc_rlimage(lua_State *L, bool alloc_data, | ||
285 | int width, int height) | ||
286 | { | ||
287 | /* rliimage is pushed on the stack it is up to you to pop it */ | ||
288 | struct rocklua_image *img; | ||
289 | |||
290 | const size_t sz_header = sizeof(struct rocklua_image); | ||
291 | size_t sz_data = 0; | ||
292 | size_t n_elems; | ||
293 | |||
294 | int w_native; | ||
295 | int h_native; | ||
296 | |||
297 | pixel_to_native(width, height, &w_native, &h_native); | ||
298 | |||
299 | n_elems = (size_t)(w_native * h_native); | ||
300 | |||
301 | if(alloc_data) /* if this a new image we need space for image data */ | ||
302 | sz_data = n_elems * sizeof(fb_data); | ||
303 | |||
304 | /* newuserdata pushes the userdata onto the stack */ | ||
305 | img = (struct rocklua_image *) lua_newuserdata(L, sz_header + sz_data); | ||
82 | 306 | ||
83 | luaL_getmetatable(L, ROCKLUA_IMAGE); | 307 | luaL_getmetatable(L, ROCKLUA_IMAGE); |
84 | lua_setmetatable(L, -2); | 308 | lua_setmetatable(L, -2); |
85 | 309 | ||
86 | a->width = width; | 310 | /* apparent w/h is stored but behind the scenes native w/h is used */ |
87 | a->height = height; | 311 | img->width = width; |
88 | a->data = &a->dummy[0][0]; | 312 | img->height = height; |
313 | img->stride = w_native; | ||
314 | img->elems = n_elems; | ||
315 | |||
316 | return img; | ||
317 | } /* alloc_rlimage */ | ||
318 | |||
319 | static inline void rli_wrap(lua_State *L, fb_data *src, int width, int height) | ||
320 | { | ||
321 | /* rliimage is pushed on the stack it is up to you to pop it */ | ||
322 | struct rocklua_image *a = alloc_rlimage(L, false, width, height); | ||
323 | |||
324 | a->data = src; | ||
325 | } /* rli_wrap */ | ||
326 | |||
327 | static inline fb_data* rli_alloc(lua_State *L, int width, int height) | ||
328 | { | ||
329 | /* rliimage is pushed on the stack it is up to you to pop it */ | ||
330 | struct rocklua_image *a = alloc_rlimage(L, true, width, height); | ||
331 | |||
332 | a->data = &a->dummy[0]; /* ref to beginning of alloc'd img data */ | ||
89 | 333 | ||
90 | return a->data; | 334 | return a->data; |
91 | } | 335 | } /* rli_alloc */ |
336 | |||
337 | static inline fb_data data_setget(fb_data *elem, int x, int y, fb_data *val) | ||
338 | { | ||
339 | fb_data old_val = 0; | ||
340 | fb_data new_val = 0; | ||
341 | |||
342 | if(elem) | ||
343 | { | ||
344 | old_val = *elem; | ||
345 | |||
346 | if(val) | ||
347 | { | ||
348 | new_val = *val; | ||
349 | pixel_to_fb(x, y, &old_val, &new_val); | ||
350 | *elem = new_val; | ||
351 | } | ||
352 | else | ||
353 | pixel_to_fb(x, y, &old_val, &new_val); | ||
354 | } | ||
355 | |||
356 | return old_val; | ||
357 | } /* data_setget */ | ||
358 | |||
359 | static inline fb_data data_set(fb_data *elem, int x, int y, fb_data *new_val) | ||
360 | { | ||
361 | /* get and set share the same underlying function */ | ||
362 | return data_setget(elem, x, y, new_val); | ||
363 | } /* data_set */ | ||
364 | |||
365 | static inline fb_data data_get(fb_data *elem, int x, int y) | ||
366 | { | ||
367 | /* get and set share the same underlying function */ | ||
368 | return data_setget(elem, x, y, NULL); | ||
369 | } /* data_get */ | ||
370 | |||
371 | static fb_data* rli_get_element(struct rocklua_image* img, int x, int y) | ||
372 | { | ||
373 | int stride = img->stride; | ||
374 | size_t elements = img->elems; | ||
375 | fb_data *data = img->data; | ||
376 | |||
377 | pixel_to_native(x, y, &x, &y); | ||
378 | |||
379 | /* row major address */ | ||
380 | size_t data_address = (stride * (y - 1)) + (x - 1); | ||
381 | |||
382 | /* x needs bound between 0 and stride otherwise overflow to prev/next y */ | ||
383 | if(x <= 0 || x > stride || data_address >= elements) | ||
384 | return NULL; /* data overflow */ | ||
385 | |||
386 | return &data[data_address]; /* return element address */ | ||
387 | } /* rli_get_element */ | ||
388 | |||
389 | /* Lua to C Interface for pixel set and get functions */ | ||
390 | static int rli_setget(lua_State *L, bool is_get) | ||
391 | { | ||
392 | /*(set) (dst*, [x1, y1, clr, clip]) */ | ||
393 | /*(get) (dst*, [x1, y1, clip]) */ | ||
394 | struct rocklua_image *a = rli_checktype(L, 1); | ||
395 | int x = luaL_checkint(L, 2); | ||
396 | int y = luaL_checkint(L, 3); | ||
397 | |||
398 | fb_data clr = 0; /* Arg 4 is color if set element */ | ||
399 | fb_data *p_clr = &clr; | ||
400 | |||
401 | int clip_narg; | ||
402 | |||
403 | if(is_get) /* get element */ | ||
404 | { | ||
405 | p_clr = NULL; | ||
406 | clip_narg = 4; | ||
407 | } | ||
408 | else /* set element */ | ||
409 | { | ||
410 | clr = FB_SCALARPACK((unsigned) luaL_checknumber(L, 4)); | ||
411 | clip_narg = 5; | ||
412 | } | ||
413 | |||
414 | fb_data *element = rli_get_element(a, x, y); | ||
415 | |||
416 | if(!element) | ||
417 | { | ||
418 | if(!luaL_optboolean(L, clip_narg, false)) /* Error if !clip */ | ||
419 | bounds_check_xy(L, a, 2, x, 3, y); | ||
420 | |||
421 | lua_pushnil(L); | ||
422 | return 1; | ||
423 | } | ||
424 | |||
425 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(data_setget(element, x, y, p_clr))); | ||
426 | |||
427 | /* returns old value */ | ||
428 | return 1; | ||
429 | } /* rli_setget */ | ||
430 | |||
431 | #ifdef RLI_EXTENDED | ||
432 | static bool init_rli_iter(struct rli_iter_d *d, | ||
433 | struct rocklua_image *img, | ||
434 | int x1, int y1, | ||
435 | int x2, int y2, | ||
436 | int dx, int dy, | ||
437 | bool swx, bool swy) | ||
438 | { | ||
439 | |||
440 | swap_int((swx), &x1, &x2); | ||
441 | swap_int((swy), &y1, &y2); | ||
442 | |||
443 | /* stepping in the correct x direction ? */ | ||
444 | if((dx > 0 && x1 > x2) || (dx < 0 && x1 < x2)) | ||
445 | dx = -dx; | ||
446 | |||
447 | /* stepping in the correct y direction ? */ | ||
448 | if((dy > 0 && y1 > y2) || (dy < 0 && y1 < y2)) | ||
449 | dy = -dy; | ||
450 | |||
451 | d->img = img; | ||
452 | d->x = x1; | ||
453 | d->y = y1; | ||
454 | d->x1 = x1; | ||
455 | d->y1 = y1; | ||
456 | d->x2 = x2; | ||
457 | d->y2 = y2; | ||
458 | d->dx = dx; | ||
459 | d->dy = dy; | ||
460 | d->elem = rli_get_element(img, d->x, d->y); | ||
461 | |||
462 | return(dx != 0 || dy != 0); | ||
463 | } /* init_rli_iter */ | ||
464 | |||
465 | /* steps to the next point(x, y) by delta x/y, stores pointer to element | ||
466 | returns true if x & y haven't reached x2 & y2 | ||
467 | if limit reached - element set to NULL, deltas set to 0 & false returned | ||
468 | */ | ||
469 | static bool next_rli_iter(struct rli_iter_d *d) | ||
470 | { | ||
471 | if((d->dx > 0 && d->x < d->x2) || (d->dx < 0 && d->x > d->x2)) | ||
472 | d->x += d->dx; | ||
473 | else if((d->dy > 0 && d->y < d->y2) || (d->dy < 0 && d->y > d->y2)) | ||
474 | { | ||
475 | d->x = d->x1; /* Reset x*/ | ||
476 | d->y += d->dy; | ||
477 | } | ||
478 | else | ||
479 | { | ||
480 | d->elem = NULL; | ||
481 | d->dx = 0; | ||
482 | d->dy = 0; | ||
483 | return false; | ||
484 | } | ||
485 | |||
486 | d->elem = rli_get_element(d->img, d->x, d->y); | ||
487 | |||
488 | return true; | ||
489 | } /* next_rli_iter */ | ||
490 | |||
491 | static int d_line(struct rocklua_image *img, | ||
492 | int x1, int y1, | ||
493 | int x2, int y2, | ||
494 | fb_data *clr, | ||
495 | bool clip) | ||
496 | { | ||
497 | /* NOTE! clr passed as pointer */ | ||
498 | /* Bresenham midpoint line algorithm */ | ||
499 | fb_data *element; | ||
500 | |||
501 | int r_a = x2 - x1; /* range of x direction called 'a' for now */ | ||
502 | int r_b = y2 - y1; /* range of y direction called 'b' for now */ | ||
503 | |||
504 | int s_a = 1; /* step of a direction */ | ||
505 | int s_b = 1; /* step of b direction */ | ||
506 | |||
507 | int d_err; | ||
508 | int numpixels; | ||
509 | |||
510 | int *a1 = &x1; /* pointer to the x var 'a' */ | ||
511 | int *b1 = &y1; /* pointer to the y var 'b' */ | ||
512 | |||
513 | if(r_a < 0) /* instead of negative range we will switch step instead */ | ||
514 | { | ||
515 | r_a = -r_a; | ||
516 | s_a = -s_a; | ||
517 | } | ||
518 | |||
519 | if(r_b < 0) /* instead of negative range we will switch step instead */ | ||
520 | { | ||
521 | r_b = -r_b; | ||
522 | s_b = -s_b; | ||
523 | } | ||
524 | |||
525 | x2 += s_a; /* add 1 extra point to make the whole line */ | ||
526 | y2 += s_b; /* add 1 extra point */ | ||
527 | |||
528 | if(r_b > r_a) /*if rangeY('b') > rangeX('a') swap their identities */ | ||
529 | { | ||
530 | a1 = &y1; | ||
531 | b1 = &x1; | ||
532 | swap_int((true), &r_a, &r_b); | ||
533 | swap_int((true), &s_a, &s_b); | ||
534 | } | ||
535 | |||
536 | d_err = ((r_b << 1) - r_a) >> 1; /* preload err of 1 step (px centered) */ | ||
537 | |||
538 | numpixels = r_a + 1; | ||
539 | |||
540 | r_a -= r_b; /* pre-subtract 'a' - 'b' */ | ||
541 | |||
542 | for(;numpixels > 0; numpixels--) | ||
543 | { | ||
544 | element = rli_get_element(img, x1, y1); | ||
545 | if(element || clip) | ||
546 | data_set(element, x1, y1, clr); | ||
547 | else | ||
548 | return numpixels + 1; /* Error */ | ||
549 | |||
550 | if(d_err >= 0) /* 0 is our target midpoint(exact point on the line) */ | ||
551 | { | ||
552 | *b1 += s_b; /* whichever axis is in 'b' stepped(-1 or +1) */ | ||
553 | d_err -= r_a; | ||
554 | } | ||
555 | else | ||
556 | d_err += r_b; /* only add 'b' when d_err < 0 */ | ||
557 | |||
558 | *a1 += s_a; /* whichever axis is in 'a' stepped(-1 or +1) */ | ||
559 | } | ||
560 | |||
561 | return 0; | ||
562 | } /* d_line */ | ||
563 | |||
564 | /* ellipse worker function */ | ||
565 | static int d_ellipse_elements(struct rocklua_image * img, | ||
566 | int x1, int y1, | ||
567 | int x2, int y2, | ||
568 | int sx, int sy, | ||
569 | fb_data *clr, | ||
570 | fb_data *fillclr, | ||
571 | bool clip) | ||
572 | { | ||
573 | int ret = 0; | ||
574 | fb_data *element1, *element2, *element3, *element4; | ||
575 | |||
576 | if(fillclr && x1 - sx != x2 + sx) | ||
577 | { | ||
578 | ret |= d_line(img, x1, y1, x2, y1, fillclr, clip); /* I. II.*/ | ||
579 | ret |= d_line(img, x1, y2, x2, y2, fillclr, clip); /* III.IV.*/ | ||
580 | } | ||
581 | |||
582 | x1 -= sx; /* shift x & y */ | ||
583 | y1 -= sy; | ||
584 | x2 += sx; | ||
585 | y2 += sy; | ||
586 | |||
587 | element1 = rli_get_element(img, x2, y1); | ||
588 | element2 = rli_get_element(img, x1, y1); | ||
589 | element3 = rli_get_element(img, x1, y2); | ||
590 | element4 = rli_get_element(img, x2, y2); | ||
591 | |||
592 | if(clip || (element1 && element2 && element3 && element4)) | ||
593 | { | ||
594 | data_set(element1, x2, y1, clr); /* I. Quadrant +x +y */ | ||
595 | data_set(element2, x1, y1, clr); /* II. Quadrant -x +y */ | ||
596 | data_set(element3, x1, y2, clr); /* III. Quadrant -x -y */ | ||
597 | data_set(element4, x2, y2, clr); /* IV. Quadrant +x -y */ | ||
598 | } | ||
599 | else | ||
600 | ret = 2; /* ERROR */ | ||
601 | |||
602 | return ret; | ||
603 | } /* d_ellipse_elements */ | ||
604 | |||
605 | static int d_ellipse(struct rocklua_image *img, | ||
606 | int x1, int y1, | ||
607 | int x2, int y2, | ||
608 | fb_data *clr, | ||
609 | fb_data *fillclr, | ||
610 | bool clip) | ||
611 | { | ||
612 | /* NOTE! clr and fillclr passed as pointers */ | ||
613 | /* Rasterizing algorithm derivative of work by Alois Zing */ | ||
614 | #if LCD_WIDTH > 1024 || LCD_HEIGHT > 1024 | ||
615 | /* Prevents overflow on large screens */ | ||
616 | double dx, dy, err, e2; | ||
617 | #else | ||
618 | long dx, dy, err, e2; | ||
619 | #endif | ||
620 | |||
621 | int ret = 0; | ||
622 | |||
623 | int a = ABS(x2 - x1); /* diameter */ | ||
624 | int b = ABS(y2 - y1); /* diameter */ | ||
625 | |||
626 | if(a == 0 || b == 0 || !clr) | ||
627 | return ret; /* not an error but nothing to display */ | ||
628 | |||
629 | int b1 = (b & 1); | ||
630 | b = b - (1 - b1); | ||
631 | |||
632 | int a2 = (a * a); | ||
633 | int b2 = (b * b); | ||
634 | |||
635 | dx = ((1 - a) * b2) >> 1; /* error increment */ | ||
636 | dy = (b1 * a2) >> 1; /* error increment */ | ||
637 | |||
638 | err = dx + dy + b1 * a2; /* error of 1.step */ | ||
639 | |||
640 | /* if called with swapped points .. exchange them */ | ||
641 | swap_int((x1 > x2), &x1, &x2); | ||
642 | swap_int((y1 > y2), &y1, &y2); | ||
643 | |||
644 | y1 += (b + 1) >> 1; | ||
645 | y2 = y1 - b1; | ||
646 | |||
647 | do | ||
648 | { | ||
649 | ret = d_ellipse_elements(img, x1, y1, x2, y2, 0, 0, clr, fillclr, clip); | ||
650 | |||
651 | e2 = err; | ||
652 | |||
653 | /* using division because you can't use bit shift on doubles.. */ | ||
654 | if(e2 <= (dy / 2)) /* target midpoint - y step */ | ||
655 | { | ||
656 | y1++; | ||
657 | y2--; | ||
658 | dy += a2; | ||
659 | err += dy; | ||
660 | } | ||
661 | |||
662 | if(e2 >= (dx / 2) || err > (dy / 2)) /* target midpoint - x step */ | ||
663 | { | ||
664 | x1++; | ||
665 | x2--; | ||
666 | dx += b2; | ||
667 | err += dx; | ||
668 | } | ||
669 | |||
670 | } while(ret == 0 && x1 <= x2); | ||
671 | |||
672 | while (ret == 0 && y1 - y2 < b) /* early stop of flat ellipse a=1 finish tip */ | ||
673 | { | ||
674 | ret = d_ellipse_elements(img, x1, y1, x2, y2, 1, 0, clr, fillclr, clip); | ||
675 | |||
676 | y1++; | ||
677 | y2--; | ||
678 | } | ||
679 | |||
680 | return ret; | ||
681 | } /* d_ellipse */ | ||
682 | |||
683 | /* Lua to C Interface for line and ellipse */ | ||
684 | static int rli_line_ellipse(lua_State *L, bool is_ellipse) | ||
685 | { | ||
686 | struct rocklua_image *a = rli_checktype(L, 1); | ||
687 | |||
688 | int x1 = luaL_checkint(L, 2); | ||
689 | int y1 = luaL_checkint(L, 3); | ||
690 | int x2 = luaL_optint(L, 4, x1); | ||
691 | int y2 = luaL_optint(L, 5, y1); | ||
692 | |||
693 | fb_data clr = FB_SCALARPACK((unsigned) luaL_checknumber(L, 6)); | ||
694 | |||
695 | fb_data fillclr; /* fill color is index 7 if is_ellipse */ | ||
696 | fb_data *p_fillclr = NULL; | ||
697 | |||
698 | bool clip; | ||
699 | int clip_narg; | ||
700 | |||
701 | if(is_ellipse) | ||
702 | clip_narg = 8; | ||
703 | else | ||
704 | clip_narg = 7; | ||
705 | |||
706 | clip = luaL_optboolean(L, clip_narg, false); | ||
707 | |||
708 | if(!clip) | ||
709 | { | ||
710 | bounds_check_xy(L, a, 2, x1, 3, y1); | ||
711 | bounds_check_xy(L, a, 4, x2, 5, y2); | ||
712 | } | ||
713 | |||
714 | if(is_ellipse) | ||
715 | { | ||
716 | if(!lua_isnoneornil(L, 7)) | ||
717 | { | ||
718 | fillclr = FB_SCALARPACK((unsigned) luaL_checkint(L, 7)); | ||
719 | p_fillclr = &fillclr; | ||
720 | } | ||
721 | |||
722 | luaL_argcheck(L, d_ellipse(a, x1, y1, x2, y2, &clr, p_fillclr, clip) == 0, | ||
723 | 1, ERR_DATA_OVF); | ||
724 | } | ||
725 | else | ||
726 | luaL_argcheck(L, d_line(a, x1, y1, x2, y2, &clr, clip) == 0, | ||
727 | 1, ERR_DATA_OVF); | ||
728 | |||
729 | return 0; | ||
730 | } /* rli_line_ellipse */ | ||
731 | |||
732 | /* Pushes lua function from Stack at position narg to top of stack | ||
733 | and puts a reference in the global registry for later use */ | ||
734 | static inline int register_luafunc(lua_State *L, int narg_funct) | ||
735 | { | ||
736 | lua_pushvalue(L, narg_funct); /* lua function */ | ||
737 | int lf_ref = luaL_ref(L, LUA_REGISTRYINDEX); | ||
738 | lua_settop(L, 0); /* clear C stack for use by lua function */ | ||
739 | return lf_ref; | ||
740 | } /* register_luafunc */ | ||
741 | |||
742 | /* User defined pixel manipulations through rli_copy, rli_marshal */ | ||
743 | static int custom_transform(lua_State *L, | ||
744 | struct rli_iter_d *ds, | ||
745 | struct rli_iter_d *ss, | ||
746 | int op, | ||
747 | fb_data *color) | ||
748 | { | ||
749 | (void) color; | ||
750 | |||
751 | fb_data dst; | ||
752 | fb_data src; | ||
753 | |||
754 | unsigned int params = 3; | ||
755 | int ret = 0; | ||
756 | |||
757 | lua_rawgeti(L, LUA_REGISTRYINDEX, op); | ||
758 | |||
759 | dst = data_get(ds->elem, ds->x, ds->y); | ||
760 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(dst)); | ||
761 | lua_pushnumber(L, ds->x); | ||
762 | lua_pushnumber(L, ds->y); | ||
763 | |||
764 | if(ss) /* Allows src to be omitted */ | ||
765 | { | ||
766 | params += 3; | ||
767 | src = data_get(ss->elem, ss->x, ss->y); | ||
768 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(src)); | ||
769 | lua_pushnumber(L, ss->x); | ||
770 | lua_pushnumber(L, ss->y); | ||
771 | } | ||
772 | |||
773 | lua_call(L, params, 2); /* call custom function w/ n-params & 2 ret */ | ||
774 | |||
775 | if(!lua_isnoneornil(L, -2)) | ||
776 | { | ||
777 | ret = 1; | ||
778 | dst = FB_SCALARPACK((unsigned) luaL_checknumber(L, -2)); | ||
779 | data_set(ds->elem, ds->x, ds->y, &dst); | ||
780 | } | ||
781 | |||
782 | if(!lua_isnoneornil(L, -1) && ss) | ||
783 | { | ||
784 | ret |= 2; | ||
785 | src = FB_SCALARPACK((unsigned) luaL_checknumber(L, -1)); | ||
786 | data_set(ss->elem, ss->x, ss->y, &src); | ||
787 | } | ||
788 | |||
789 | lua_pop(L, 2); | ||
790 | return ret; /* 0 signals iterator to stop */ | ||
791 | } /* custom_transform */ | ||
792 | |||
793 | /* Pre defined pixel manipulations through rli_copy */ | ||
794 | static int blit_transform(lua_State *L, | ||
795 | struct rli_iter_d *ds, | ||
796 | struct rli_iter_d *ss, | ||
797 | int op, | ||
798 | fb_data *color) | ||
799 | { | ||
800 | (void) L; | ||
801 | fb_data clr = *color; | ||
802 | fb_data dst = data_get(ds->elem, ds->x, ds->y); | ||
803 | fb_data src; | ||
804 | |||
805 | /* Reuse 0 - 7 for src / clr blits*/ | ||
806 | if(op >= 30 && op <= 37) | ||
807 | { | ||
808 | op -= 30; | ||
809 | src = clr; | ||
810 | } | ||
811 | else | ||
812 | src = data_get(ss->elem, ss->x, ss->y); | ||
813 | |||
814 | switch(op) | ||
815 | { | ||
816 | default: | ||
817 | /* case 30: */ | ||
818 | case 0: { dst = src; break; }/* copyS/C */ | ||
819 | /* case 31: */ | ||
820 | case 1: { dst = src | dst; break; }/* DorS/C */ | ||
821 | /* case 32: */ | ||
822 | case 2: { dst = src ^ dst; break; }/* DxorS/C */ | ||
823 | /* case 33: */ | ||
824 | case 3: { dst = ~(src | dst); break; }/* nDorS/C */ | ||
825 | /* case 34: */ | ||
826 | case 4: { dst = (~src) | dst; break; }/* DornS/C */ | ||
827 | /* case 35: */ | ||
828 | case 5: { dst = src & dst; break; }/* DandS/C */ | ||
829 | /* case 36: */ | ||
830 | case 6: { dst = src & (~dst); break; }/* nDandS/C */ | ||
831 | /* case 37: */ | ||
832 | case 7: { dst = ~src; break; }/* notS/C */ | ||
833 | |||
834 | /* mask blits */ | ||
835 | case 8: { if(src != 0) { dst = clr; } break; }/* Sand */ | ||
836 | case 9: { if(src == 0) { dst = clr; } break; }/* Snot */ | ||
837 | |||
838 | case 10: { dst = src | clr; break; }/* SorC */ | ||
839 | case 11: { dst = src ^ clr; break; }/* SxorC */ | ||
840 | case 12: { dst = ~(src | clr); break; }/* nSorC */ | ||
841 | case 13: { dst = src | (~clr); break; }/* SornC */ | ||
842 | case 14: { dst = src & clr; break; }/* SandC */ | ||
843 | case 15: { dst = (~src) & clr; break; }/* nSandC */ | ||
844 | case 16: { dst |= (~src) | clr; break; }/* DornSorC */ | ||
845 | case 17: { dst ^= (src & (dst ^ clr)); break; }/* DxorSandDxorC */ | ||
846 | |||
847 | case 18: { if(src != clr) { dst = src; } break; } | ||
848 | case 19: { if(src == clr) { dst = src; } break; } | ||
849 | case 20: { if(src > clr) { dst = src; } break; } | ||
850 | case 21: { if(src < clr) { dst = src; } break; } | ||
851 | |||
852 | case 22: { if(dst != clr) { dst = src; } break; } | ||
853 | case 23: { if(dst == clr) { dst = src; } break; } | ||
854 | case 24: { if(dst > clr) { dst = src; } break; } | ||
855 | case 25: { if(dst < clr) { dst = src; } break; } | ||
856 | |||
857 | case 26: { if(dst != src) { dst = clr; } break; } | ||
858 | case 27: { if(dst == src) { dst = clr; } break; } | ||
859 | case 28: { if(dst > src) { dst = clr; } break; } | ||
860 | case 29: { if(dst < src) { dst = clr; } break; } | ||
861 | |||
862 | }/*switch op*/ | ||
863 | |||
864 | data_set(ds->elem, ds->x, ds->y, &dst); | ||
865 | return 1; | ||
866 | } /* blit_transform */ | ||
92 | 867 | ||
93 | static int rli_new(lua_State *L) | 868 | static int invert_transform(lua_State *L, |
869 | struct rli_iter_d *ds, | ||
870 | struct rli_iter_d *ss, | ||
871 | int op, | ||
872 | fb_data *color) | ||
94 | { | 873 | { |
95 | int width = luaL_checkint(L, 1); | 874 | (void) L; |
96 | int height = luaL_checkint(L, 2); | 875 | (void) color; |
876 | (void) op; | ||
877 | (void) ss; | ||
878 | |||
879 | fb_data val = invert_color(data_get(ds->elem, ds->x, ds->y)); | ||
880 | data_set(ds->elem, ds->x, ds->y, &val); | ||
881 | |||
882 | return 1; | ||
883 | } /* invert_transform */ | ||
884 | #endif /* RLI_EXTENDED */ | ||
885 | |||
886 | /* RLI to LUA Interface functions *********************************************/ | ||
887 | RLI_LUA rli_new(lua_State *L) | ||
888 | { /* [width, height] */ | ||
889 | int width = luaL_optint(L, 1, LCD_WIDTH); | ||
890 | int height = luaL_optint(L, 2, LCD_HEIGHT); | ||
891 | |||
892 | luaL_argcheck(L, width > 0, 1, ERR_IDX_RANGE); | ||
893 | luaL_argcheck(L, height > 0, 2, ERR_IDX_RANGE); | ||
97 | 894 | ||
98 | rli_alloc(L, width, height); | 895 | rli_alloc(L, width, height); |
99 | 896 | ||
100 | return 1; | 897 | return 1; |
101 | } | 898 | } |
102 | 899 | ||
103 | static struct rocklua_image* rli_checktype(lua_State *L, int arg) | 900 | RLI_LUA rli_set(lua_State *L) |
104 | { | 901 | { |
105 | void *ud = luaL_checkudata(L, arg, ROCKLUA_IMAGE); | 902 | /*(set) (dst*, [x1, y1, clr, clip]) */ |
106 | luaL_argcheck(L, ud != NULL, arg, "'" ROCKLUA_IMAGE "' expected"); | 903 | /* get and set share the same underlying function */ |
107 | return (struct rocklua_image*) ud; | 904 | return rli_setget(L, false); |
905 | } | ||
906 | |||
907 | RLI_LUA rli_get(lua_State *L) | ||
908 | { | ||
909 | /*(get) (dst*, [x1, y1, clip]) */ | ||
910 | /* get and set share the same underlying function */ | ||
911 | return rli_setget(L, true); | ||
108 | } | 912 | } |
109 | 913 | ||
110 | static int rli_width(lua_State *L) | 914 | RLI_LUA rli_height(lua_State *L) |
915 | { | ||
916 | struct rocklua_image *a = rli_checktype(L, 1); | ||
917 | lua_pushnumber(L, a->height); | ||
918 | return 1; | ||
919 | } | ||
920 | |||
921 | RLI_LUA rli_width(lua_State *L) | ||
111 | { | 922 | { |
112 | struct rocklua_image *a = rli_checktype(L, 1); | 923 | struct rocklua_image *a = rli_checktype(L, 1); |
113 | lua_pushnumber(L, a->width); | 924 | lua_pushnumber(L, a->width); |
114 | return 1; | 925 | return 1; |
115 | } | 926 | } |
116 | 927 | ||
117 | static int rli_height(lua_State *L) | 928 | RLI_LUA rli_equal(lua_State *L) |
118 | { | 929 | { |
119 | struct rocklua_image *a = rli_checktype(L, 1); | 930 | struct rocklua_image *a = rli_checktype(L, 1); |
120 | lua_pushnumber(L, a->height); | 931 | struct rocklua_image *b = rli_checktype(L, 2); |
932 | lua_pushboolean(L, a->data == b->data); | ||
121 | return 1; | 933 | return 1; |
122 | } | 934 | } |
123 | 935 | ||
124 | static fb_data* rli_element(lua_State *L) | 936 | RLI_LUA rli_size(lua_State *L) |
125 | { | 937 | { |
126 | struct rocklua_image *a = rli_checktype(L, 1); | 938 | struct rocklua_image *a = rli_checktype(L, 1); |
127 | int x = luaL_checkint(L, 2); | 939 | lua_pushnumber(L, a->elems); |
128 | int y = luaL_checkint(L, 3); | 940 | return 1; |
941 | } | ||
942 | |||
943 | RLI_LUA rli_raw(lua_State *L) | ||
944 | { | ||
945 | /*val = (img*, index, [new_val]) */ | ||
946 | struct rocklua_image *a = rli_checktype(L, 1); | ||
947 | |||
948 | size_t i = (unsigned) luaL_checkint(L, 2); | ||
949 | |||
950 | fb_data val; | ||
129 | 951 | ||
130 | luaL_argcheck(L, 1 <= x && x <= a->width, 2, | 952 | luaL_argcheck(L, i > 0 && i <= (a->elems), 2, ERR_IDX_RANGE); |
131 | "index out of range"); | ||
132 | luaL_argcheck(L, 1 <= y && y <= a->height, 3, | ||
133 | "index out of range"); | ||
134 | 953 | ||
135 | /* return element address */ | 954 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(a->data[i-1])); |
136 | return &a->data[a->width * (y - 1) + (x - 1)]; | 955 | |
956 | if(!lua_isnoneornil(L, 3)) | ||
957 | { | ||
958 | val = FB_SCALARPACK((unsigned) luaL_checknumber(L, 3)); | ||
959 | a->data[i-1] = val; | ||
960 | } | ||
961 | |||
962 | return 1; | ||
137 | } | 963 | } |
138 | 964 | ||
139 | static int rli_set(lua_State *L) | 965 | RLI_LUA rli_tostring(lua_State *L) |
140 | { | 966 | { |
141 | fb_data newvalue = FB_SCALARPACK((unsigned)luaL_checknumber(L, 4)); | 967 | /* (img, [infoitem]) */ |
142 | *rli_element(L) = newvalue; | 968 | struct rocklua_image *a = rli_checktype(L, 1); |
143 | return 0; | 969 | |
970 | int item = (unsigned) luaL_optint(L, 2, 0); | ||
971 | size_t bytes = a->elems * sizeof(fb_data); | ||
972 | |||
973 | switch(item) | ||
974 | { | ||
975 | default: | ||
976 | case RLI_INFO_ALL: | ||
977 | { | ||
978 | lua_pushfstring(L, | ||
979 | ROCKLUA_IMAGE ": %dx%d, %d elements, %d bytes, %d-bit depth, %d pack", | ||
980 | a->width, a->height, a->elems, bytes, LCD_DEPTH, LCD_PIXELFORMAT); | ||
981 | break; | ||
982 | } | ||
983 | case RLI_INFO_TYPE: { lua_pushfstring(L, ROCKLUA_IMAGE ); break; } | ||
984 | case RLI_INFO_WIDTH: { lua_pushfstring(L, "%d", a->width ); break; } | ||
985 | case RLI_INFO_HEIGHT: { lua_pushfstring(L, "%d", a->height ); break; } | ||
986 | case RLI_INFO_ELEMS: { lua_pushfstring(L, "%d", a->elems ); break; } | ||
987 | case RLI_INFO_BYTES: { lua_pushfstring(L, "%d", bytes ); break; } | ||
988 | case RLI_INFO_DEPTH: { lua_pushfstring(L, "%d", LCD_DEPTH ); break; } | ||
989 | case RLI_INFO_FORMAT: { lua_pushfstring(L, "%d", LCD_PIXELFORMAT); break; } | ||
990 | case RLI_INFO_ADDRESS: { lua_pushfstring(L, "%p", a->data); break; } | ||
991 | } | ||
992 | |||
993 | return 1; | ||
994 | } | ||
995 | |||
996 | #ifdef RLI_EXTENDED | ||
997 | RLI_LUA rli_ellipse(lua_State *L) | ||
998 | { | ||
999 | /* (dst*, x1, y1, x2, y2, [clr, fillclr, clip]) */ | ||
1000 | /* line and ellipse share the same init function */ | ||
1001 | return rli_line_ellipse(L, true); | ||
144 | } | 1002 | } |
145 | 1003 | ||
146 | static int rli_get(lua_State *L) | 1004 | RLI_LUA rli_line(lua_State *L) |
147 | { | 1005 | { |
148 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(*rli_element(L))); | 1006 | /* (dst*, x1, y1, [x2, y2, clr, clip]) */ |
1007 | /* line and ellipse share the same init function */ | ||
1008 | return rli_line_ellipse(L, false); | ||
1009 | } | ||
1010 | |||
1011 | RLI_LUA rli_iterator(lua_State *L) { | ||
1012 | /* see rli_iterator_factory */ | ||
1013 | struct rli_iter_d *ds; | ||
1014 | ds = (struct rli_iter_d *) lua_touserdata(L, lua_upvalueindex(1)); | ||
1015 | |||
1016 | if(ds->dx != 0 || ds->dy != 0) | ||
1017 | { | ||
1018 | lua_pushnumber(L, FB_UNPACK_SCALAR_LCD(data_get(ds->elem, ds->x, ds->y))); | ||
1019 | |||
1020 | lua_pushinteger(L, ds->x); | ||
1021 | lua_pushinteger(L, ds->y); | ||
1022 | |||
1023 | next_rli_iter(ds); /* load next element */ | ||
1024 | |||
1025 | return 3; | ||
1026 | } | ||
1027 | return 0; /* nothing left to do */ | ||
1028 | } | ||
1029 | |||
1030 | RLI_LUA rli_iterator_factory(lua_State *L) { | ||
1031 | /* (src*, [x1, y1, x2, y2, dx, dy]) */ | ||
1032 | struct rocklua_image *a = rli_checktype(L, 1); /*image we wish to iterate*/ | ||
1033 | |||
1034 | struct rli_iter_d *ds; | ||
1035 | |||
1036 | int x1 = luaL_optint(L, 2, 1); | ||
1037 | int y1 = luaL_optint(L, 3, 1); | ||
1038 | int x2 = luaL_optint(L, 4, a->width - x1 + 1); | ||
1039 | int y2 = luaL_optint(L, 5, a->height - y1 + 1); | ||
1040 | int dx = luaL_optint(L, 6, 1); | ||
1041 | int dy = luaL_optint(L, 7, 1); | ||
1042 | |||
1043 | /* create new iter + pushed onto stack */ | ||
1044 | ds = (struct rli_iter_d *) lua_newuserdata(L, sizeof(struct rli_iter_d)); | ||
1045 | |||
1046 | init_rli_iter(ds, a, x1, y1, x2, y2, dx, dy, false, false); | ||
1047 | |||
1048 | /* returns the iter function with embedded iter data(up values) */ | ||
1049 | lua_pushcclosure(L, &rli_iterator, 1); | ||
1050 | |||
149 | return 1; | 1051 | return 1; |
150 | } | 1052 | } |
151 | 1053 | ||
152 | static int rli_tostring(lua_State *L) | 1054 | RLI_LUA rli_marshal(lua_State *L) /* also invert */ |
153 | { | 1055 | { |
1056 | /* (img*, [x1, y1, x2, y2, dx, dy, clip, function]) */ | ||
154 | struct rocklua_image *a = rli_checktype(L, 1); | 1057 | struct rocklua_image *a = rli_checktype(L, 1); |
155 | lua_pushfstring(L, ROCKLUA_IMAGE ": %dx%d", a->width, a->height); | 1058 | |
156 | return 1; | 1059 | struct rli_iter_d ds; |
1060 | |||
1061 | int x1 = luaL_optint(L, 2, 1); | ||
1062 | int y1 = luaL_optint(L, 3, 1); | ||
1063 | int x2 = luaL_optint(L, 4, a->width); | ||
1064 | int y2 = luaL_optint(L, 5, a->height); | ||
1065 | int dx = luaL_optint(L, 6, 1); | ||
1066 | int dy = luaL_optint(L, 7, 1); | ||
1067 | bool clip = luaL_optboolean(L, 8, false); | ||
1068 | |||
1069 | int lf_ref = LUA_NOREF; /* de-ref'd without consequence */ | ||
1070 | |||
1071 | int (*rli_trans)(lua_State *, struct rli_iter_d *, struct rli_iter_d *, int, fb_data *); | ||
1072 | rli_trans = invert_transform; /* default transformation */ | ||
1073 | |||
1074 | if(!clip) | ||
1075 | { | ||
1076 | bounds_check_xy(L, a, 2, x1, 3, y1); | ||
1077 | bounds_check_xy(L, a, 4, x2, 5, y2); | ||
1078 | } | ||
1079 | |||
1080 | init_rli_iter(&ds, a, x1, y1, x2, y2, dx, dy, false, false); | ||
1081 | |||
1082 | if(lua_isfunction(L, 9)) /* custom function */ | ||
1083 | { | ||
1084 | rli_trans = custom_transform; | ||
1085 | lf_ref = register_luafunc(L, 9); | ||
1086 | } | ||
1087 | |||
1088 | do | ||
1089 | { | ||
1090 | luaL_argcheck(L, clip || (ds.elem != NULL), 1, ERR_DATA_OVF); | ||
1091 | |||
1092 | if(!(*rli_trans)(L, &ds, NULL, lf_ref, NULL)) | ||
1093 | break; /* Custom op can quit early */ | ||
1094 | |||
1095 | } while(next_rli_iter(&ds)); | ||
1096 | |||
1097 | luaL_unref(L, LUA_REGISTRYINDEX, lf_ref); /* de-reference custom function */ | ||
1098 | return 0; | ||
1099 | } | ||
1100 | |||
1101 | RLI_LUA rli_copy(lua_State *L) | ||
1102 | { | ||
1103 | /* (dst*, src*, [d_x, d_y, s_x, s_y, x_off, y_off, clip, [op, funct/clr]]) */ | ||
1104 | struct rocklua_image *d = rli_checktype(L, 1); /*dst*/ | ||
1105 | struct rocklua_image *s = rli_checktype(L, 2); /*src*/ | ||
1106 | |||
1107 | struct rli_iter_d ds; /*dst*/ | ||
1108 | struct rli_iter_d ss; /*src*/ | ||
1109 | |||
1110 | /* copy whole image if possible */ | ||
1111 | if(s->elems == d->elems && s->width == d->width && lua_gettop(L) < 3) | ||
1112 | { | ||
1113 | memcpy(d->data, s->data, d->elems * sizeof(fb_data)); | ||
1114 | return 0; | ||
1115 | } | ||
1116 | |||
1117 | int d_x = luaL_optint(L, 3, 1); | ||
1118 | int d_y = luaL_optint(L, 4, 1); | ||
1119 | int s_x = luaL_optint(L, 5, 1); | ||
1120 | int s_y = luaL_optint(L, 6, 1); | ||
1121 | |||
1122 | int w = MIN(d->width - d_x, s->width - s_x); | ||
1123 | int h = MIN(d->height - d_y, s->height - s_y); | ||
1124 | |||
1125 | int x_off = luaL_optint(L, 7, w); | ||
1126 | int y_off = luaL_optint(L, 8, h); | ||
1127 | |||
1128 | bool clip = luaL_optboolean(L, 9, false); | ||
1129 | int op = luaL_optint(L, 10, 0); | ||
1130 | fb_data clr = 0; /* 11 is custom function | color */ | ||
1131 | |||
1132 | bool d_swx = (x_off < 0); /* dest swap */ | ||
1133 | bool d_swy = (y_off < 0); | ||
1134 | bool s_swx = false; /* src swap */ | ||
1135 | bool s_swy = false; | ||
1136 | |||
1137 | int (*rli_trans)(lua_State *, struct rli_iter_d *, struct rli_iter_d *, int, fb_data *); | ||
1138 | rli_trans = blit_transform; /* default transformation */ | ||
1139 | |||
1140 | int lf_ref = LUA_NOREF; /* de-ref'd without consequence */ | ||
1141 | |||
1142 | if(!clip) /* Out of bounds is not allowed */ | ||
1143 | { | ||
1144 | bounds_check_xy(L, d, 3, d_x, 4, d_y); | ||
1145 | bounds_check_xy(L, s, 5, s_x, 6, s_y); | ||
1146 | } | ||
1147 | else if (w < 0 || h < 0) /* not an error but nothing to display */ | ||
1148 | return 0; | ||
1149 | |||
1150 | w = MIN(w, ABS(x_off)); | ||
1151 | h = MIN(h, ABS(y_off)); | ||
1152 | |||
1153 | /* if(s->data == d->data) need to care about fill direction */ | ||
1154 | if(d_x > s_x) | ||
1155 | { | ||
1156 | d_swx = !d_swx; | ||
1157 | s_swx = !s_swx; | ||
1158 | } | ||
1159 | |||
1160 | if(d_y > s_y) | ||
1161 | { | ||
1162 | d_swy = !d_swy; | ||
1163 | s_swy = !s_swy; | ||
1164 | } | ||
1165 | |||
1166 | init_rli_iter(&ds, d, d_x, d_y, d_x + w, d_y + h, 1, 1, d_swx, d_swy); | ||
1167 | |||
1168 | init_rli_iter(&ss, s, s_x, s_y, s_x + w, s_y + h, 1, 1, s_swx, s_swy); | ||
1169 | |||
1170 | if (op == 0xFF && lua_isfunction(L, 11)) /* custom function specified.. */ | ||
1171 | { | ||
1172 | rli_trans = custom_transform; | ||
1173 | lf_ref = register_luafunc(L, 11); | ||
1174 | op = lf_ref; | ||
1175 | } | ||
1176 | else | ||
1177 | clr = FB_SCALARPACK((unsigned) luaL_optnumber(L, 11, LCD_BLACK)); | ||
1178 | |||
1179 | do | ||
1180 | { | ||
1181 | if(!clip) | ||
1182 | { | ||
1183 | luaL_argcheck(L, ss.elem != NULL, 2, ERR_DATA_OVF); | ||
1184 | luaL_argcheck(L, ds.elem != NULL, 1, ERR_DATA_OVF); | ||
1185 | } | ||
1186 | |||
1187 | if(!(*rli_trans)(L, &ds, &ss, op, &clr)) | ||
1188 | break; /* Custom op can quit early */ | ||
1189 | |||
1190 | } while(next_rli_iter(&ds) && next_rli_iter(&ss)); | ||
1191 | |||
1192 | luaL_unref(L, LUA_REGISTRYINDEX, lf_ref); /* de-reference custom function */ | ||
1193 | return 0; | ||
1194 | } | ||
1195 | |||
1196 | RLI_LUA rli_clear(lua_State *L) | ||
1197 | { | ||
1198 | /* (dst*, [color, x1, y1, x2, y2, clip]) */ | ||
1199 | struct rocklua_image *a = rli_checktype(L, 1); | ||
1200 | |||
1201 | struct rli_iter_d ds; | ||
1202 | |||
1203 | fb_data clr = FB_SCALARPACK((unsigned) luaL_optnumber(L, 2, LCD_BLACK)); | ||
1204 | int x1 = luaL_optint(L, 3, 1); | ||
1205 | int y1 = luaL_optint(L, 4, 1); | ||
1206 | int x2 = luaL_optint(L, 5, a->width); | ||
1207 | int y2 = luaL_optint(L, 6, a->height); | ||
1208 | bool clip = luaL_optboolean(L, 7, false); | ||
1209 | |||
1210 | if(!clip) | ||
1211 | { | ||
1212 | bounds_check_xy(L, a, 3, x1, 4, y1); | ||
1213 | bounds_check_xy(L, a, 5, x2, 6, y2); | ||
1214 | } | ||
1215 | |||
1216 | init_rli_iter(&ds, a, x1, y1, x2, y2, 1, 1, false, false); | ||
1217 | |||
1218 | do | ||
1219 | { | ||
1220 | luaL_argcheck(L, clip || (ds.elem != NULL), 1, ERR_DATA_OVF); | ||
1221 | |||
1222 | data_set(ds.elem, ds.x, ds.y, &clr); | ||
1223 | |||
1224 | } while(next_rli_iter(&ds)); | ||
1225 | |||
1226 | return 0; | ||
157 | } | 1227 | } |
1228 | #endif /* RLI_EXTENDED */ | ||
158 | 1229 | ||
1230 | /* Rli Image methods exported to lua */ | ||
159 | static const struct luaL_reg rli_lib [] = | 1231 | static const struct luaL_reg rli_lib [] = |
160 | { | 1232 | { |
161 | {"__tostring", rli_tostring}, | 1233 | {"__tostring", rli_tostring}, |
162 | {"set", rli_set}, | 1234 | {"_data", rli_raw}, |
163 | {"get", rli_get}, | 1235 | {"__len", rli_size}, |
164 | {"width", rli_width}, | 1236 | {"__eq", rli_equal}, |
165 | {"height", rli_height}, | 1237 | {"width", rli_width}, |
1238 | {"height", rli_height}, | ||
1239 | {"set", rli_set}, | ||
1240 | {"get", rli_get}, | ||
1241 | |||
1242 | #ifdef RLI_EXTENDED | ||
1243 | {"copy", rli_copy}, | ||
1244 | {"clear", rli_clear}, | ||
1245 | {"invert", rli_marshal}, | ||
1246 | {"marshal", rli_marshal}, | ||
1247 | {"points", rli_iterator_factory}, | ||
1248 | {"line", rli_line}, | ||
1249 | {"ellipse", rli_ellipse}, | ||
1250 | #endif /* RLI_EXTENDED */ | ||
166 | {NULL, NULL} | 1251 | {NULL, NULL} |
167 | }; | 1252 | }; |
168 | 1253 | ||
169 | static inline void rli_init(lua_State *L) | 1254 | static inline void rli_init(lua_State *L) |
170 | { | 1255 | { |
1256 | /* some devices need x | y coords shifted to match native format */ | ||
1257 | /* conversion between packed native formats and individual pixel addressing */ | ||
1258 | init_pixelmask(&x_shift, &y_shift, &xy_mask, &pixelmask); | ||
1259 | |||
171 | luaL_newmetatable(L, ROCKLUA_IMAGE); | 1260 | luaL_newmetatable(L, ROCKLUA_IMAGE); |
172 | 1261 | ||
173 | lua_pushstring(L, "__index"); | 1262 | lua_pushstring(L, "__index"); |
@@ -189,57 +1278,45 @@ static inline void rli_init(lua_State *L) | |||
189 | #define SIMPLE_VOID_WRAPPER(func) RB_WRAP(func) { (void)L; func(); return 0; } | 1278 | #define SIMPLE_VOID_WRAPPER(func) RB_WRAP(func) { (void)L; func(); return 0; } |
190 | 1279 | ||
191 | /* Helper function for opt_viewport */ | 1280 | /* Helper function for opt_viewport */ |
192 | static void check_tablevalue(lua_State *L, const char* key, int tablepos, void* res, bool unsigned_val) | 1281 | static void check_tablevalue(lua_State *L, |
1282 | const char* key, | ||
1283 | int tablepos, | ||
1284 | void* res, | ||
1285 | bool is_unsigned) | ||
193 | { | 1286 | { |
194 | lua_getfield(L, tablepos, key); /* Find table[key] */ | 1287 | lua_getfield(L, tablepos, key); /* Find table[key] */ |
195 | 1288 | ||
196 | if(!lua_isnoneornil(L, -1)) | 1289 | int val = luaL_optint(L, -1, 0); |
197 | { | 1290 | |
198 | if(unsigned_val) | 1291 | if(is_unsigned) |
199 | *(unsigned*)res = luaL_checkint(L, -1); | 1292 | *(unsigned*)res = (unsigned) val; |
200 | else | 1293 | else |
201 | *(int*)res = luaL_checkint(L, -1); | 1294 | *(int*)res = val; |
202 | } | ||
203 | 1295 | ||
204 | lua_pop(L, 1); /* Pop the value off the stack */ | 1296 | lua_pop(L, 1); /* Pop the value off the stack */ |
205 | } | 1297 | } |
206 | 1298 | ||
207 | static struct viewport* opt_viewport(lua_State *L, int narg, struct viewport* alt) | 1299 | static inline struct viewport* opt_viewport(lua_State *L, |
1300 | int narg, | ||
1301 | struct viewport* vp, | ||
1302 | struct viewport* alt) | ||
208 | { | 1303 | { |
209 | if(lua_isnoneornil(L, narg)) | 1304 | if(lua_isnoneornil(L, narg)) |
210 | return alt; | 1305 | return alt; |
211 | 1306 | ||
212 | int tablepos = lua_gettop(L); | ||
213 | struct viewport *vp; | ||
214 | |||
215 | lua_getfield(L, tablepos, "vp"); /* get table['vp'] */ | ||
216 | if(lua_isnoneornil(L, -1)) | ||
217 | { | ||
218 | lua_pop(L, 1); /* Pop nil off stack */ | ||
219 | |||
220 | vp = (struct viewport*) lua_newuserdata(L, sizeof(struct viewport)); /* Allocate memory and push it as udata on the stack */ | ||
221 | memset(vp, 0, sizeof(struct viewport)); /* Init viewport values to 0 */ | ||
222 | lua_setfield(L, tablepos, "vp"); /* table['vp'] = vp (pops value off the stack) */ | ||
223 | } | ||
224 | else | ||
225 | { | ||
226 | vp = (struct viewport*) lua_touserdata(L, -1); /* Reuse viewport struct */ | ||
227 | lua_pop(L, 1); /* We don't need the value on stack */ | ||
228 | } | ||
229 | |||
230 | luaL_checktype(L, narg, LUA_TTABLE); | 1307 | luaL_checktype(L, narg, LUA_TTABLE); |
231 | 1308 | ||
232 | check_tablevalue(L, "x", tablepos, &vp->x, false); | 1309 | check_tablevalue(L, "x", narg, &vp->x, false); |
233 | check_tablevalue(L, "y", tablepos, &vp->y, false); | 1310 | check_tablevalue(L, "y", narg, &vp->y, false); |
234 | check_tablevalue(L, "width", tablepos, &vp->width, false); | 1311 | check_tablevalue(L, "width", narg, &vp->width, false); |
235 | check_tablevalue(L, "height", tablepos, &vp->height, false); | 1312 | check_tablevalue(L, "height", narg, &vp->height, false); |
236 | #ifdef HAVE_LCD_BITMAP | 1313 | #ifdef HAVE_LCD_BITMAP |
237 | check_tablevalue(L, "font", tablepos, &vp->font, false); | 1314 | check_tablevalue(L, "font", narg, &vp->font, false); |
238 | check_tablevalue(L, "drawmode", tablepos, &vp->drawmode, false); | 1315 | check_tablevalue(L, "drawmode", narg, &vp->drawmode, false); |
239 | #endif | 1316 | #endif |
240 | #if LCD_DEPTH > 1 | 1317 | #if LCD_DEPTH > 1 |
241 | check_tablevalue(L, "fg_pattern", tablepos, &vp->fg_pattern, true); | 1318 | check_tablevalue(L, "fg_pattern", narg, &vp->fg_pattern, true); |
242 | check_tablevalue(L, "bg_pattern", tablepos, &vp->bg_pattern, true); | 1319 | check_tablevalue(L, "bg_pattern", narg, &vp->bg_pattern, true); |
243 | #endif | 1320 | #endif |
244 | 1321 | ||
245 | return vp; | 1322 | return vp; |
@@ -247,9 +1324,9 @@ static struct viewport* opt_viewport(lua_State *L, int narg, struct viewport* al | |||
247 | 1324 | ||
248 | RB_WRAP(set_viewport) | 1325 | RB_WRAP(set_viewport) |
249 | { | 1326 | { |
250 | struct viewport *vp = opt_viewport(L, 1, NULL); | 1327 | static struct viewport vp; |
251 | int screen = luaL_optint(L, 2, SCREEN_MAIN); | 1328 | int screen = luaL_optint(L, 2, SCREEN_MAIN); |
252 | rb->screens[screen]->set_viewport(vp); | 1329 | rb->screens[screen]->set_viewport(opt_viewport(L, 1, &vp, NULL)); |
253 | return 0; | 1330 | return 0; |
254 | } | 1331 | } |
255 | 1332 | ||