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Linear transformed texture sampling for (d)bitmap
[lsnes.git] / src / lua / gui-bitmap.cpp
blob902da8b3dc047eeaf440b1dd21210405e9bd73ea
1 #include "lua/internal.hpp"
2 #include "core/framebuffer.hpp"
3 #include "core/instance.hpp"
4 #include "core/messages.hpp"
5 #include "core/misc.hpp"
6 #include "library/lua-framebuffer.hpp"
7 #include "library/minmax.hpp"
8 #include "library/png.hpp"
9 #include "library/sha256.hpp"
10 #include "library/serialization.hpp"
11 #include "library/string.hpp"
12 #include "library/zip.hpp"
13 #include "lua/bitmap.hpp"
14 #include "library/threads.hpp"
15 #include <vector>
16 #include <sstream>
17
18 std::vector<char> lua_dbitmap::save_png() const
19 {
20 png::encoder img;
21 img.width = width;
22 img.height = height;
23 img.has_palette = false;
24 img.has_alpha = false;
25 img.data.resize(width * height);
26 for(size_t i = 0; i < width * height; i++) {
27 const framebuffer::color& c = pixels[i];
28 if(c.origa != 256)
29 img.has_alpha = true;
30 img.data[i] = c.orig + ((uint32_t)(c.origa - (c.origa >> 7) + (c.origa >> 8)) << 24);
31 }
32 std::ostringstream tmp1;
33 img.encode(tmp1);
34 std::string tmp2 = tmp1.str();
35 return std::vector<char>(tmp2.begin(), tmp2.end());
36 }
37
38 std::vector<char> lua_bitmap::save_png(const lua_palette& pal) const
39 {
40 png::encoder img;
41 img.width = width;
42 img.height = height;
43 img.has_palette = true;
44 img.has_alpha = false;
45 img.data.resize(width * height);
46 img.palette.resize(pal.color_count);
47 for(size_t i = 0; i < width * height; i++) {
48 img.data[i] = pixels[i];
49 }
50 for(size_t i = 0; i < pal.color_count; i++) {
51 const framebuffer::color& c = pal.colors[i];
52 if(c.origa != 256)
53 img.has_alpha = true;
54 img.palette[i] = c.orig + ((uint32_t)(c.origa - (c.origa >> 7) + (c.origa >> 8)) << 24);
55 }
56 std::ostringstream tmp1;
57 img.encode(tmp1);
58 std::string tmp2 = tmp1.str();
59 return std::vector<char>(tmp2.begin(), tmp2.end());
60 }
61
62 namespace
63 {
64 const char* CONST_base64chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
65
66 struct render_object_bitmap : public framebuffer::object
67 {
68 render_object_bitmap(int32_t _x, int32_t _y, lua::objpin<lua_bitmap>& _bitmap,
69 lua::objpin<lua_palette>& _palette, int32_t _x0, int32_t _y0, uint32_t _dw, uint32_t _dh,
70 bool _outside) throw()
71 {
72 x = _x;
73 y = _y;
74 b = _bitmap;
75 p = _palette;
76 x0 = _x0;
77 y0 = _y0;
78 dw = _dw;
79 dh = _dh;
80 outside = _outside;
81 }
82
83 render_object_bitmap(int32_t _x, int32_t _y, lua::objpin<lua_dbitmap>& _bitmap, int32_t _x0,
84 int32_t _y0, uint32_t _dw, uint32_t _dh, bool _outside) throw()
85 {
86 x = _x;
87 y = _y;
88 b2 = _bitmap;
89 x0 = _x0;
90 y0 = _y0;
91 dw = _dw;
92 dh = _dh;
93 outside = _outside;
94 }
95
96 ~render_object_bitmap() throw()
97 {
98 }
99
100 bool kill_request(void* obj) throw()
101 {
102 return kill_request_ifeq(p.object(), obj) ||
103 kill_request_ifeq(b.object(), obj) ||
104 kill_request_ifeq(b2.object(), obj);
105 }
106
107 template<bool T> void composite_op(struct framebuffer::fb<T>& scr) throw()
108 {
109 uint32_t oX = x + scr.get_origin_x() - x0;
110 uint32_t oY = y + scr.get_origin_y() - y0;
111 size_t w, h;
112 if(b) {
113 w = b->width;
114 h = b->height;
115 } else {
116 w = b2->width;
117 h = b2->height;
118 }
119
120 range bX = ((range::make_w(scr.get_width()) - oX) & range::make_w(w) &
121 range::make_s(x0, dw));
122 range bY = ((range::make_w(scr.get_height()) - oY) & range::make_w(h) &
123 range::make_s(y0, dh));
124 range sX = range::make_s(-x + x0, scr.get_last_blit_width());
125 range sY = range::make_s(-y + y0, scr.get_last_blit_height());
126
127 if(b)
128 lua_bitmap_composite(scr, oX, oY, bX, bY, sX, sY, outside,
129 lua_bitmap_holder<T>(*b, *p));
130 else
131 lua_bitmap_composite(scr, oX, oY, bX, bY, sX, sY, outside,
132 lua_dbitmap_holder<T>(*b2));
133 }
134 void operator()(struct framebuffer::fb<false>& x) throw() { composite_op(x); }
135 void operator()(struct framebuffer::fb<true>& x) throw() { composite_op(x); }
136 void clone(framebuffer::queue& q) const throw(std::bad_alloc) { q.clone_helper(this); }
137 private:
138 int32_t x;
139 int32_t y;
140 lua::objpin<lua_bitmap> b;
141 lua::objpin<lua_dbitmap> b2;
142 lua::objpin<lua_palette> p;
143 int32_t x0;
144 int32_t y0;
145 uint32_t dw;
146 uint32_t dh;
147 bool outside;
148 };
149
150 struct operand_dbitmap
151 {
152 typedef framebuffer::color pixel_t;
153 typedef framebuffer::color rpixel_t;
154 operand_dbitmap(lua_dbitmap& _bitmap)
155 : bitmap(_bitmap), _transparent(-1)
156 {
157 pixels = bitmap.pixels;
158 }
159 size_t get_width() { return bitmap.width; }
160 size_t get_height() { return bitmap.height; }
161 const rpixel_t& read(size_t idx) { return pixels[idx]; }
162 const pixel_t& lookup(const rpixel_t& p) { return p; }
163 void write(size_t idx, const pixel_t& v) { pixels[idx] = v; }
164 bool is_opaque(const rpixel_t& p) { return p.origa > 0; }
165 const pixel_t& transparent() { return _transparent; }
166 private:
167 lua_dbitmap& bitmap;
168 pixel_t* pixels;
169 framebuffer::color _transparent;
170 };
171
172 struct operand_bitmap
173 {
174 typedef uint16_t pixel_t;
175 typedef uint16_t rpixel_t;
176 operand_bitmap(lua_bitmap& _bitmap)
177 : bitmap(_bitmap)
178 {
179 pixels = bitmap.pixels;
180 }
181 size_t get_width() { return bitmap.width; }
182 size_t get_height() { return bitmap.height; }
183 const rpixel_t& read(size_t idx) { return pixels[idx]; }
184 const pixel_t& lookup(const rpixel_t& p) { return p; }
185 void write(size_t idx, const pixel_t& v) { pixels[idx] = v; }
186 bool is_opaque(const rpixel_t& p) { return p > 0; }
187 pixel_t transparent() { return 0; }
188 private:
189 lua_bitmap& bitmap;
190 pixel_t* pixels;
191 };
192
193 struct operand_bitmap_pal
194 {
195 typedef framebuffer::color pixel_t;
196 typedef uint16_t rpixel_t;
197 operand_bitmap_pal(lua_bitmap& _bitmap, lua_palette& _palette)
198 : bitmap(_bitmap), palette(_palette), _transparent(-1)
199 {
200 pixels = bitmap.pixels;
201 limit = palette.color_count;
202 pal = palette.colors;
203 }
204 size_t get_width() { return bitmap.width; }
205 size_t get_height() { return bitmap.height; }
206 const rpixel_t& read(size_t idx) { return pixels[idx]; }
207 const pixel_t& lookup(const rpixel_t& p) { return *((p < limit) ? pal + p : &_transparent); }
208 bool is_opaque(const rpixel_t& p) { return p > 0; }
209 const pixel_t& transparent() { return _transparent; }
210 private:
211 lua_bitmap& bitmap;
212 lua_palette& palette;
213 uint16_t* pixels;
214 framebuffer::color* pal;
215 uint32_t limit;
216 framebuffer::color _transparent;
217 };
218
219 struct colorkey_none
220 {
221 bool iskey(uint16_t& c) const { return false; }
222 bool iskey(framebuffer::color& c) const { return false; }
223 };
224
225 struct colorkey_direct
226 {
227 colorkey_direct(uint64_t _ck)
228 {
229 framebuffer::color c(_ck);
230 ck = c.orig;
231 cka = c.origa;
232 }
233 bool iskey(framebuffer::color& c) const { return (c.orig == ck && c.origa == cka); }
234 uint32_t ck;
235 uint16_t cka;
236 };
237
238 struct colorkey_palette
239 {
240 colorkey_palette(uint64_t _ck) { ck = _ck; }
241 bool iskey(uint16_t& c) const { return (c == ck); }
242 uint16_t ck;
243 };
244
245 template<class _src, class _dest, class colorkey> struct srcdest
246 {
247 srcdest(_dest Xdest, _src Xsrc, const colorkey& _ckey)
248 : dest(Xdest), src(Xsrc), ckey(_ckey)
249 {
250 swidth = src.get_width();
251 sheight = src.get_height();
252 dwidth = dest.get_width();
253 dheight = dest.get_height();
254 }
255 void copy(size_t didx, size_t sidx)
256 {
257 typename _src::rpixel_t c = src.read(sidx);
258 if(!ckey.iskey(c))
259 dest.write(didx, src.lookup(c));
260 }
261 size_t swidth, sheight, dwidth, dheight;
262 private:
263 _dest dest;
264 _src src;
265 colorkey ckey;
266 };
267
268 template<class _src, class _dest, class colorkey> srcdest<_src, _dest, colorkey> mk_srcdest(_dest dest,
269 _src src, const colorkey& ckey)
270 {
271 return srcdest<_src, _dest, colorkey>(dest, src, ckey);
272 }
273
274 struct srcdest_priority
275 {
276 srcdest_priority(lua_bitmap& dest, lua_bitmap& src)
277 {
278 darray = dest.pixels;
279 sarray = src.pixels;
280 swidth = src.width;
281 sheight = src.height;
282 dwidth = dest.width;
283 dheight = dest.height;
284 }
285 void copy(size_t didx, size_t sidx)
286 {
287 uint16_t c = sarray[sidx];
288 if(darray[didx] < c)
289 darray[didx] = c;
290 }
291 size_t swidth, sheight, dwidth, dheight;
292 private:
293 uint16_t* sarray;
294 uint16_t* darray;
295 };
296
297 enum porterduff_oper
298 {
299 PD_SRC,
300 PD_ATOP,
301 PD_OVER,
302 PD_IN,
303 PD_OUT,
304 PD_DEST,
305 PD_DEST_ATOP,
306 PD_DEST_OVER,
307 PD_DEST_IN,
308 PD_DEST_OUT,
309 PD_CLEAR,
310 PD_XOR
311 };
312
313 porterduff_oper get_pd_oper(const std::string& oper)
314 {
315 if(oper == "Src") return PD_SRC;
316 if(oper == "Atop") return PD_ATOP;
317 if(oper == "Over") return PD_OVER;
318 if(oper == "In") return PD_IN;
319 if(oper == "Out") return PD_OUT;
320 if(oper == "Dest") return PD_DEST;
321 if(oper == "DestAtop") return PD_DEST_ATOP;
322 if(oper == "DestOver") return PD_DEST_OVER;
323 if(oper == "DestIn") return PD_DEST_IN;
324 if(oper == "DestOut") return PD_DEST_OUT;
325 if(oper == "Clear") return PD_CLEAR;
326 if(oper == "Xor") return PD_XOR;
327 (stringfmt() << "Bad Porter-Duff operator '" << oper << "'").throwex();
328 return PD_SRC; //NOTREACHED
329 }
330
331 template<porterduff_oper oper, class _src, class _dest> struct srcdest_porterduff
332 {
333 srcdest_porterduff(_dest Xdest, _src Xsrc)
334 : dest(Xdest), src(Xsrc)
335 {
336 swidth = src.get_width();
337 sheight = src.get_height();
338 dwidth = dest.get_width();
339 dheight = dest.get_height();
340 }
341 void copy(size_t didx, size_t sidx)
342 {
343 typename _dest::rpixel_t vd = dest.read(didx);
344 typename _src::rpixel_t vs = src.read(sidx);
345 bool od = dest.is_opaque(vd);
346 bool os = src.is_opaque(vs);
347 typename _dest::pixel_t ld = dest.lookup(vd);
348 typename _src::pixel_t ls = src.lookup(vs);
349 typename _dest::pixel_t t = dest.transparent();
350 typename _dest::pixel_t r;
351 switch(oper) {
352 case PD_SRC: r = ls; break;
353 case PD_ATOP: r = od ? (os ? ls : ld) : t; break;
354 case PD_OVER: r = os ? ls : ld; break;
355 case PD_IN: r = (od & os) ? ls : t; break;
356 case PD_OUT: r = (!od && os) ? ls : t; break;
357 case PD_DEST: r = ld; break;
358 case PD_DEST_ATOP: r = os ? (od ? ld : ls) : t; break;
359 case PD_DEST_OVER: r = od ? ld : ls; break;
360 case PD_DEST_IN: r = (od & os) ? ld : t; break;
361 case PD_DEST_OUT: r = (od & !os) ? ld : t; break;
362 case PD_CLEAR: r = t; break;
363 case PD_XOR: r = od ? (os ? t : ld) : ls; break;
364 }
365 dest.write(didx, r);
366 }
367 size_t swidth, sheight, dwidth, dheight;
368 private:
369 _dest dest;
370 _src src;
371 };
372
373 template<porterduff_oper oper, class _src, class _dest> srcdest_porterduff<oper, _src, _dest>
374 mk_porterduff(_dest dest, _src src)
375 {
376 return srcdest_porterduff<oper, _src, _dest>(dest, src);
377 }
378
379 template<class srcdest>
380 void xblit_copy(srcdest sd, uint32_t dx, uint32_t dy, uint32_t sx, uint32_t sy, uint32_t w, uint32_t h)
381 {
382 while((dx + w > sd.dwidth || sx + w > sd.swidth) && w > 0)
383 w--;
384 while((dy + h > sd.dheight || sy + h > sd.sheight) && h > 0)
385 h--;
386 if(dx + w < w || dy + h < h) return; //Don't do overflowing blits.
387 if(sx + w < w || sy + h < h) return; //Don't do overflowing blits.
388 size_t sidx = sy * sd.swidth + sx;
389 size_t didx = dy * sd.dwidth + dx;
390 size_t srskip = sd.swidth - w;
391 size_t drskip = sd.dwidth - w;
392 for(uint32_t j = 0; j < h; j++) {
393 for(uint32_t i = 0; i < w; i++) {
394 sd.copy(didx, sidx);
395 sidx++;
396 didx++;
397 }
398 sidx += srskip;
399 didx += drskip;
400 }
401 }
402
403 template<class srcdest>
404 void xblit_scaled(srcdest sd, uint32_t dx, uint32_t dy, uint32_t sx, uint32_t sy, uint32_t w, uint32_t h,
405 uint32_t hscl, uint32_t vscl)
406 {
407 if(!hscl || !vscl) return;
408 w = max(static_cast<uint32_t>(sd.dwidth / hscl), w);
409 h = max(static_cast<uint32_t>(sd.dheight / vscl), h);
410 while((dx + hscl * w > sd.dwidth || sx + w > sd.swidth) && w > 0)
411 w--;
412 while((dy + vscl * h > sd.dheight || sy + h > sd.sheight) && h > 0)
413 h--;
414 if(dx + hscl * w < dx || dy + vscl * h < dy) return; //Don't do overflowing blits.
415 if(sx + w < w || sy + h < h) return; //Don't do overflowing blits.
416 size_t sidx = sy * sd.swidth + sx;
417 size_t didx = dy * sd.dwidth + dx;
418 size_t drskip = sd.dwidth - hscl * w;
419 uint32_t _w = hscl * w;
420 for(uint32_t j = 0; j < vscl * h; j++) {
421 uint32_t _sidx = sidx;
422 for(uint32_t i = 0; i < _w ; i += hscl) {
423 for(uint32_t k = 0; k < hscl; k++)
424 sd.copy(didx + k, _sidx);
425 _sidx++;
426 didx+=hscl;
427 }
428 if((j % vscl) == vscl - 1)
429 sidx += sd.swidth;
430 didx += drskip;
431 }
432 }
433
434 template<bool scaled, class srcdest>
435 inline void xblit(srcdest sd, uint32_t dx, uint32_t dy, uint32_t sx, uint32_t sy, uint32_t w, uint32_t h,
436 uint32_t hscl, uint32_t vscl)
437 {
438 if(scaled)
439 xblit_scaled(sd, dx, dy, sx, sy, w, h, hscl, vscl);
440 else
441 xblit_copy(sd, dx, dy, sx, sy, w, h);
442 }
443
444 template<bool scaled, class src, class dest>
445 inline void xblit_pal(dest _dest, src _src, uint64_t ck, uint32_t dx, uint32_t dy, uint32_t sx,
446 uint32_t sy, uint32_t w, uint32_t h, uint32_t hscl, uint32_t vscl)
447 {
448 if(ck > 65535)
449 xblit<scaled>(mk_srcdest(_dest, _src, colorkey_none()), dx, dy, sx, sy, w, h,
450 hscl, vscl);
451 else
452 xblit<scaled>(mk_srcdest(_dest, _src, colorkey_palette(ck)), dx, dy, sx, sy, w, h,
453 hscl, vscl);
454 }
455
456 template<bool scaled, class src, class dest>
457 inline void xblit_dir(dest _dest, src _src, uint64_t ck, uint32_t dx, uint32_t dy, uint32_t sx,
458 uint32_t sy, uint32_t w, uint32_t h, uint32_t hscl, uint32_t vscl)
459 {
460 if(ck == 0x100000000ULL)
461 xblit<scaled>(mk_srcdest(_dest, _src, colorkey_none()), dx, dy, sx, sy, w, h,
462 hscl, vscl);
463 else
464 xblit<scaled>(mk_srcdest(_dest, _src, colorkey_direct(ck)), dx, dy, sx, sy, w, h,
465 hscl, vscl);
466 }
467
468 template<bool scaled, porterduff_oper oper, class src, class dest>
469 inline void xblit_pduff2(dest _dest, src _src, uint32_t dx, uint32_t dy, uint32_t sx,
470 uint32_t sy, uint32_t w, uint32_t h, uint32_t hscl, uint32_t vscl)
471 {
472 xblit<scaled>(mk_porterduff<oper>(_dest, _src), dx, dy, sx, sy, w, h, hscl, vscl);
473 }
474
475 template<bool scaled, class src, class dest>
476 inline void xblit_pduff(dest _dest, src _src, uint32_t dx, uint32_t dy, uint32_t sx,
477 uint32_t sy, uint32_t w, uint32_t h, uint32_t hscl, uint32_t vscl, porterduff_oper oper)
478 {
479 switch(oper) {
480 case PD_ATOP:
481 xblit_pduff2<scaled, PD_ATOP>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
482 break;
483 case PD_CLEAR:
484 xblit_pduff2<scaled, PD_CLEAR>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
485 break;
486 case PD_DEST:
487 xblit_pduff2<scaled, PD_DEST>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
488 break;
489 case PD_DEST_ATOP:
490 xblit_pduff2<scaled, PD_DEST_ATOP>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
491 break;
492 case PD_DEST_IN:
493 xblit_pduff2<scaled, PD_DEST_IN>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
494 break;
495 case PD_DEST_OUT:
496 xblit_pduff2<scaled, PD_DEST_OUT>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
497 break;
498 case PD_DEST_OVER:
499 xblit_pduff2<scaled, PD_DEST_OVER>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
500 break;
501 case PD_IN:
502 xblit_pduff2<scaled, PD_IN>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
503 break;
504 case PD_OUT:
505 xblit_pduff2<scaled, PD_OUT>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
506 break;
507 case PD_OVER:
508 xblit_pduff2<scaled, PD_OVER>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
509 break;
510 case PD_SRC:
511 xblit_pduff2<scaled, PD_SRC>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
512 break;
513 case PD_XOR:
514 xblit_pduff2<scaled, PD_XOR>(_dest, _src, dx, dy, sx, sy, w, h, hscl, vscl);
515 break;
516 }
517 }
518
519 int bitmap_load_fn(lua::state& L, std::function<lua_loaded_bitmap()> src)
520 {
521 auto bitmap = src();
522 if(bitmap.d) {
523 lua_dbitmap* b = lua::_class<lua_dbitmap>::create(L, bitmap.w, bitmap.h);
524 for(size_t i = 0; i < bitmap.w * bitmap.h; i++)
525 b->pixels[i] = framebuffer::color(bitmap.bitmap[i]);
526 return 1;
527 } else {
528 lua_bitmap* b = lua::_class<lua_bitmap>::create(L, bitmap.w, bitmap.h);
529 lua_palette* p = lua::_class<lua_palette>::create(L);
530 for(size_t i = 0; i < bitmap.w * bitmap.h; i++)
531 b->pixels[i] = bitmap.bitmap[i];
532 p->adjust_palette_size(bitmap.palette.size());
533 for(size_t i = 0; i < bitmap.palette.size(); i++)
534 p->colors[i] = framebuffer::color(bitmap.palette[i]);
535 return 2;
536 }
537 }
538
539 template<typename pixel>
540 inline void _sample_texture(pixel* dest, uint32_t dwidth, uint32_t dheight, pixel* source, uint32_t swidth,
541 uint32_t sheight, int32_t xx, int32_t xy, int32_t x0, int32_t yx, int32_t yy, int32_t y0, uint32_t s,
542 bool wrap, pixel transparent)
543 {
544 int32_t th = s / 2;
545 size_t didx = 0;
546 for(int32_t i = 0; i < (int32_t)dheight; i++) {
547 int64_t ssx = (int64_t)xy * i + (int64_t)x0;
548 int64_t ssy = (int64_t)yy * i + (int64_t)y0;
549 for(int32_t j = 0; j < (int32_t)dwidth; j++) {
550 //Compute whole and fractional parts.
551 int64_t isx = ssx / (int32_t)s;
552 int32_t fsx = ssx % (int32_t)s;
553 int64_t isy = ssy / (int32_t)s;
554 int32_t fsy = ssy % (int32_t)s;
555 //Make the fractional parts always positive.
556 if(fsx < 0) { fsx += s; isx--; }
557 if(fsy < 0) { fsy += s; isy--; }
558 //Round the whole parts.
559 isx += fsx > th;
560 isy += fsy > th;
561 //Compute color.
562 pixel p = transparent;
563 if(wrap) {
564 isx = isx % swidth;
565 if(isx < 0) isx += swidth;
566 isy = isy % sheight;
567 if(isy < 0) isy += sheight;
568 p = source[isy * swidth + isx];
569 } else if(isx >= 0 && isx < swidth && isy >= 0 && isy < sheight) {
570 p = source[isy * swidth + isx];
571 }
572 dest[didx] = p;
573 //Update values for next pixel.
574 ssx += (int64_t)xx;
575 ssy += (int64_t)yx;
576 didx++;
577 }
578 }
579 }
580
581 inline int64_t mangle_color(uint32_t c)
582 {
583 if(c < 0x1000000)
584 return -1;
585 else
586 return ((256 - (c >> 24) - (c >> 31)) << 24) | (c & 0xFFFFFF);
587 }
588
589 int base64val(char ch)
590 {
591 if(ch >= 'A' && ch <= 'Z')
592 return ch - 65;
593 if(ch >= 'a' && ch <= 'z')
594 return ch - 97 + 26;
595 if(ch >= '0' && ch <= '9')
596 return ch - 48 + 52;
597 if(ch == '+')
598 return 62;
599 if(ch == '/')
600 return 63;
601 if(ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n')
602 return -1;
603 if(ch == '=')
604 return -2;
605 return -3;
606 }
607
608 std::string base64_encode(const std::string& str)
609 {
610 std::ostringstream x;
611 unsigned pos = 0;
612 uint32_t mem = 0;
613 for(auto i : str) {
614 mem = (mem << 8) + (unsigned char)i;
615 if(++pos == 3) {
616 uint8_t c1 = (mem >> 18) & 0x3F;
617 uint8_t c2 = (mem >> 12) & 0x3F;
618 uint8_t c3 = (mem >> 6) & 0x3F;
619 uint8_t c4 = mem & 0x3F;
620 x << CONST_base64chars[c1];
621 x << CONST_base64chars[c2];
622 x << CONST_base64chars[c3];
623 x << CONST_base64chars[c4];
624 mem = 0;
625 pos = 0;
626 }
627 }
628 if(pos == 2) {
629 uint8_t c1 = (mem >> 10) & 0x3F;
630 uint8_t c2 = (mem >> 4) & 0x3F;
631 uint8_t c3 = (mem << 2) & 0x3F;
632 x << CONST_base64chars[c1];
633 x << CONST_base64chars[c2];
634 x << CONST_base64chars[c3];
635 x << "=";
636 }
637 if(pos == 1) {
638 uint8_t c1 = (mem >> 2) & 0x3F;
639 uint8_t c2 = (mem << 4) & 0x3F;
640 x << CONST_base64chars[c1];
641 x << CONST_base64chars[c2];
642 x << "==";
643 }
644 return x.str();
645 }
646
647 std::string base64_decode(const std::string& str)
648 {
649 bool end = 0;
650 uint32_t memory = 0;
651 uint32_t memsize = 1;
652 int posmod = 0;
653 std::ostringstream x;
654 for(auto i : str) {
655 int v = base64val(i);
656 if(v == -1)
657 continue;
658 posmod = (posmod + 1) & 3;
659 if(v == -2 && (posmod == 1 || posmod == 2))
660 throw std::runtime_error("Invalid Base64");
661 if(v == -2) {
662 end = true;
663 continue;
664 }
665 if(v == -3 || end)
666 throw std::runtime_error("Invalid Base64");
667 memory = memory * 64 + v;
668 memsize = memsize * 64;
669 if(memsize >= 256) {
670 memsize >>= 8;
671 x << static_cast<uint8_t>(memory / memsize);
672 memory %= memsize;
673 }
674 }
675 return x.str();
676 }
677
678 template<typename T>
679 int bitmap_load_png_fn(lua::state& L, T& src)
680 {
681 png::decoder img(src);
682 if(img.has_palette) {
683 lua_bitmap* b = lua::_class<lua_bitmap>::create(L, img.width, img.height);
684 lua_palette* p = lua::_class<lua_palette>::create(L);
685 for(size_t i = 0; i < img.width * img.height; i++)
686 b->pixels[i] = img.data[i];
687 p->adjust_palette_size(img.palette.size());
688 for(size_t i = 0; i < img.palette.size(); i++)
689 p->colors[i] = framebuffer::color(mangle_color(img.palette[i]));
690 return 2;
691 } else {
692 lua_dbitmap* b = lua::_class<lua_dbitmap>::create(L, img.width, img.height);
693 for(size_t i = 0; i < img.width * img.height; i++)
694 b->pixels[i] = framebuffer::color(mangle_color(img.data[i]));
695 return 1;
696 }
697 }
698
699 int bitmap_palette_fn(lua::state& L, std::istream& s)
700 {
701 lua_palette* p = lua::_class<lua_palette>::create(L);
702 while(s) {
703 std::string line;
704 std::getline(s, line);
705 istrip_CR(line);
706 regex_results r;
707 if(!regex_match("[ \t]*(#.*)?", line)) {
708 //Nothing.
709 } else if(r = regex("[ \t]*([0-9]+)[ \t]+([0-9]+)[ \t]+([0-9]+)[ \t]+([0-9]+)[ \t]*", line)) {
710 int64_t cr, cg, cb, ca;
711 cr = parse_value<uint8_t>(r[1]);
712 cg = parse_value<uint8_t>(r[2]);
713 cb = parse_value<uint8_t>(r[3]);
714 ca = 256 - parse_value<uint16_t>(r[4]);
715 if(ca == 256)
716 p->push_back(framebuffer::color(-1));
717 else
718 p->push_back(framebuffer::color((ca << 24) | (cr << 16)
719 | (cg << 8) | cb));
720 } else if(r = regex("[ \t]*([0-9]+)[ \t]+([0-9]+)[ \t]+([0-9]+)[ \t]*", line)) {
721 int64_t cr, cg, cb;
722 cr = parse_value<uint8_t>(r[1]);
723 cg = parse_value<uint8_t>(r[2]);
724 cb = parse_value<uint8_t>(r[3]);
725 p->push_back(framebuffer::color((cr << 16) | (cg << 8) | cb));
726 } else if(r = regex("[ \t]*([^ \t]|[^ \t].*[^ \t])[ \t]*", line)) {
727 p->push_back(framebuffer::color(r[1]));
728 } else
729 throw std::runtime_error("Invalid line format (" + line + ")");
730 }
731 return 1;
732 }
733
734 inline framebuffer::color tadjust(framebuffer::color c, uint16_t adj)
735 {
736 uint32_t rgb = c.orig;
737 uint32_t a = c.origa;
738 a = (a * adj) >> 8;
739 if(a > 256)
740 a = 256;
741 if(a == 0)
742 return framebuffer::color(-1);
743 else
744 return framebuffer::color(rgb | ((uint32_t)(256 - a) << 24));
745 }
746
747 lua::_class<lua_loaded_bitmap> LUA_class_loaded_bitmap(lua_class_gui, "IMAGELOADER", {
748 {"load", lua_loaded_bitmap::load<false>},
749 {"load_str", lua_loaded_bitmap::load_str<false>},
750 {"load_png", lua_loaded_bitmap::load<true>},
751 {"load_png_str", lua_loaded_bitmap::load_str<true>},
752 });
753
754 lua::_class<lua_palette> LUA_class_palette(lua_class_gui, "PALETTE", {
755 {"new", lua_palette::create},
756 {"load", lua_palette::load},
757 {"load_str", lua_palette::load_str},
758 }, {
759 {"set", &lua_palette::set},
760 {"get", &lua_palette::get},
761 {"hash", &lua_palette::hash},
762 {"debug", &lua_palette::debug},
763 {"adjust_transparency", &lua_palette::adjust_transparency},
764 }, &lua_palette::print);
765
766 lua::_class<lua_bitmap> LUA_class_bitmap(lua_class_gui, "BITMAP", {
767 {"new", lua_bitmap::create},
768 }, {
769 {"draw", &lua_bitmap::draw<false, false>},
770 {"draw_clip", &lua_bitmap::draw<false, true>},
771 {"draw_outside", &lua_bitmap::draw<true, false>},
772 {"draw_clip_outside", &lua_bitmap::draw<true, true>},
773 {"pset", &lua_bitmap::pset},
774 {"pget", &lua_bitmap::pget},
775 {"size", &lua_bitmap::size},
776 {"hash", &lua_bitmap::hash},
777 {"blit", &lua_bitmap::blit<false, false>},
778 {"blit_priority", &lua_bitmap::blit_priority<false>},
779 {"blit_scaled", &lua_bitmap::blit<true, false>},
780 {"blit_scaled_priority", &lua_bitmap::blit_priority<true>},
781 {"blit_porterduff", &lua_bitmap::blit<false, true>},
782 {"blit_scaled_porterduff", &lua_bitmap::blit<true, true>},
783 {"save_png", &lua_bitmap::save_png},
784 {"sample_texture", &lua_bitmap::sample_texture},
785 }, &lua_bitmap::print);
786
787 lua::_class<lua_dbitmap> LUA_class_dbitmap(lua_class_gui, "DBITMAP", {
788 {"new", lua_dbitmap::create},
789 }, {
790 {"draw", &lua_dbitmap::draw<false, false>},
791 {"draw_clip", &lua_dbitmap::draw<false, true>},
792 {"draw_outside", &lua_dbitmap::draw<true, false>},
793 {"draw_clip_outside", &lua_dbitmap::draw<true, true>},
794 {"pset", &lua_dbitmap::pset},
795 {"pget", &lua_dbitmap::pget},
796 {"size", &lua_dbitmap::size},
797 {"hash", &lua_dbitmap::hash},
798 {"blit", &lua_dbitmap::blit<false, false>},
799 {"blit_scaled", &lua_dbitmap::blit<true, false>},
800 {"blit_porterduff", &lua_dbitmap::blit<false, true>},
801 {"blit_scaled_porterduff", &lua_dbitmap::blit<true, true>},
802 {"save_png", &lua_dbitmap::save_png},
803 {"adjust_transparency", &lua_dbitmap::adjust_transparency},
804 {"sample_texture", &lua_dbitmap::sample_texture},
805 }, &lua_dbitmap::print);
806 }
807
808 /** Palette **/
809 lua_palette::lua_palette(lua::state& L)
810 {
811 color_count = 0;
812 scolors = colors = lua::align_overcommit<lua_palette, framebuffer::color>(this);
813 for(unsigned i = 0; i < reserved_colors; i++)
814 scolors[i] = framebuffer::color(-1);
815 }
816
817 lua_palette::~lua_palette()
818 {
819 CORE().fbuf->render_kill_request(this);
820 }
821
822 std::string lua_palette::print()
823 {
824 size_t s = color_count;
825 return (stringfmt() << s << " " << ((s != 1) ? "colors" : "color")).str();
826 }
827
828 int lua_palette::create(lua::state& L, lua::parameters& P)
829 {
830 lua::_class<lua_palette>::create(L);
831 return 1;
832 }
833
834 int lua_palette::load(lua::state& L, lua::parameters& P)
835 {
836 std::string name, name2;
837
838 P(name, P.optional(name2, ""));
839
840 std::istream& s = zip::openrel(name, name2);
841 try {
842 int r = bitmap_palette_fn(L, s);
843 delete &s;
844 return r;
845 } catch(...) {
846 delete &s;
847 throw;
848 }
849 }
850
851 int lua_palette::load_str(lua::state& L, lua::parameters& P)
852 {
853 std::string content;
854
855 P(content);
856
857 std::istringstream s(content);
858 return bitmap_palette_fn(L, s);
859 }
860
861 int lua_palette::set(lua::state& L, lua::parameters& P)
862 {
863 framebuffer::color nc;
864 uint16_t c;
865
866 P(P.skipped(), c, nc);
867
868 if(this->color_count <= c) {
869 this->adjust_palette_size(static_cast<uint32_t>(c) + 1);
870 }
871 this->colors[c] = nc;
872 return 0;
873 }
874
875 int lua_palette::get(lua::state& L, lua::parameters& P)
876 {
877 framebuffer::color nc;
878 uint16_t c;
879 int64_t _nc;
880
881 P(P.skipped(), c);
882
883 if(this->color_count <= c) {
884 return 0;
885 }
886 nc = this->colors[c];
887 uint32_t rgb = nc.orig;
888 uint32_t a = nc.origa;
889 if(a == 0)
890 _nc = -1;
891 else
892 _nc = ((256 - a) << 24) | rgb;
893 L.pushnumber(_nc);
894 return 1;
895 }
896
897 int lua_palette::hash(lua::state& L, lua::parameters& P)
898 {
899 sha256 h;
900 const int buffersize = 256;
901 int bufferuse = 0;
902 char buf[buffersize];
903 unsigned realsize = 0;
904 for(unsigned i = 0; i < this->color_count; i++)
905 if(this->colors[i].origa) realsize = i + 1;
906 for(unsigned i = 0; i < realsize; i++) {
907 if(bufferuse + 6 > buffersize) {
908 h.write(buf, bufferuse);
909 bufferuse = 0;
910 }
911 serialization::u32b(buf + bufferuse + 0, this->colors[i].orig);
912 serialization::u16b(buf + bufferuse + 4, this->colors[i].origa);
913 bufferuse += 6;
914 }
915 if(bufferuse > 0) h.write(buf, bufferuse);
916 L.pushlstring(h.read());
917 return 1;
918 }
919
920 int lua_palette::debug(lua::state& L, lua::parameters& P)
921 {
922 for(size_t i = 0; i < color_count; i++)
923 messages << "Color #" << i << ": " << colors[i].orig << ":" << colors[i].origa << std::endl;
924 return 0;
925 }
926
927 int lua_palette::adjust_transparency(lua::state& L, lua::parameters& P)
928 {
929 uint16_t tadj;
930
931 P(P.skipped(), tadj);
932
933 for(size_t i = 0; i < color_count; i++)
934 colors[i] = tadjust(colors[i], tadj);
935 return 0;
936 }
937
938 void lua_palette::adjust_palette_size(size_t newsize)
939 {
940 threads::alock h(palette_mutex);
941 if(newsize > reserved_colors) {
942 lcolors.resize(newsize);
943 if(color_count <= reserved_colors) {
944 for(unsigned i = 0; i < color_count; i++)
945 lcolors[i] = colors[i];
946 }
947 colors = &lcolors[0];
948 } else {
949 if(color_count > reserved_colors) {
950 for(unsigned i = 0; i < color_count; i++)
951 scolors[i] = lcolors[i];
952 }
953 colors = scolors;
954 }
955 color_count = newsize;
956 }
957
958 void lua_palette::push_back(const framebuffer::color& cx)
959 {
960 size_t c = color_count;
961 adjust_palette_size(c + 1);
962 colors[c] = cx;
963 }
964
965 /** BITMAP **/
966 lua_bitmap::lua_bitmap(lua::state& L, uint32_t w, uint32_t h)
967 {
968 if(h > 0 && overcommit(w, h) / h / sizeof(uint16_t) < w) throw std::bad_alloc();
969 width = w;
970 height = h;
971 pixels = lua::align_overcommit<lua_bitmap, uint16_t>(this);
972 memset(pixels, 0, 2 * width * height);
973 }
974
975 lua_bitmap::~lua_bitmap()
976 {
977 CORE().fbuf->render_kill_request(this);
978 }
979
980 std::string lua_bitmap::print()
981 {
982 return (stringfmt() << width << "*" << height).str();
983 }
984
985 int lua_bitmap::create(lua::state& L, lua::parameters& P)
986 {
987 uint32_t w, h;
988 uint16_t c;
989
990 P(w, h, P.optional(c, 0));
991
992 lua_bitmap* b = lua::_class<lua_bitmap>::create(L, w, h);
993 for(size_t i = 0; i < b->width * b->height; i++)
994 b->pixels[i] = c;
995 return 1;
996 }
997
998 template<bool outside, bool clip>
999 int lua_bitmap::draw(lua::state& L, lua::parameters& P)
1000 {
1001 auto& core = CORE();
1002 int32_t x, y;
1003 lua::objpin<lua_bitmap> b;
1004 lua::objpin<lua_palette> p;
1005
1006 if(!core.lua2->render_ctx) return 0;
1007
1008 P(b, x, y, p);
1009
1010 int32_t x0 = 0, y0 = 0, dw = b->width, dh = b->height;
1011 if(clip) P(x0, y0, dw, dh);
1012
1013 core.lua2->render_ctx->queue->create_add<render_object_bitmap>(x, y, b, p, x0, y0, dw, dh, outside);
1014 return 0;
1015 }
1016
1017 int lua_bitmap::pset(lua::state& L, lua::parameters& P)
1018 {
1019 uint32_t x, y;
1020 uint16_t c;
1021
1022 P(P.skipped(), x, y, c);
1023
1024 if(x >= this->width || y >= this->height)
1025 return 0;
1026 this->pixels[y * this->width + x] = c;
1027 return 0;
1028 }
1029
1030 int lua_bitmap::pget(lua::state& L, lua::parameters& P)
1031 {
1032 uint32_t x, y;
1033
1034 P(P.skipped(), x, y);
1035
1036 if(x >= this->width || y >= this->height)
1037 return 0;
1038 L.pushnumber(this->pixels[y * this->width + x]);
1039 return 1;
1040 }
1041
1042 int lua_bitmap::size(lua::state& L, lua::parameters& P)
1043 {
1044 L.pushnumber(this->width);
1045 L.pushnumber(this->height);
1046 return 2;
1047 }
1048
1049 int lua_bitmap::hash(lua::state& L, lua::parameters& P)
1050 {
1051 sha256 h;
1052 const int buffersize = 256;
1053 int bufferuse = 0;
1054 char buf[buffersize];
1055 memset(buf, 0, buffersize);
1056 serialization::u64b(buf + 0, this->width);
1057 serialization::u64b(buf + 8, this->height);
1058 bufferuse = 16;
1059 for(unsigned i = 0; i < this->width * this->height; i++) {
1060 if(bufferuse + 2 > buffersize) {
1061 h.write(buf, bufferuse);
1062 bufferuse = 0;
1063 }
1064 serialization::u16b(buf + bufferuse + 0, this->pixels[i]);
1065 bufferuse += 2;
1066 }
1067 if(bufferuse > 0) h.write(buf, bufferuse);
1068 L.pushlstring(h.read());
1069 return 1;
1070 }
1071
1072 template<bool scaled, bool porterduff> int lua_bitmap::blit(lua::state& L, lua::parameters& P)
1073 {
1074 uint32_t dx, dy, sx, sy, w, h, hscl, vscl;
1075 lua_bitmap* src_p;
1076
1077 P(P.skipped(), dx, dy, src_p, sx, sy, w, h);
1078 if(scaled)
1079 P(hscl, P.optional2(vscl, hscl));
1080
1081 if(porterduff) {
1082 porterduff_oper pd_oper = get_pd_oper(P.arg<std::string>());
1083 xblit_pduff<scaled>(operand_bitmap(*this), operand_bitmap(*src_p), dx, dy, sx, sy, w, h, hscl, vscl,
1084 pd_oper);
1085 } else {
1086 int64_t ck = P.arg_opt<uint64_t>(65536);
1087 xblit_pal<scaled>(operand_bitmap(*this), operand_bitmap(*src_p), ck, dx, dy, sx, sy, w, h,
1088 hscl, vscl);
1089 }
1090 return 0;
1091 }
1092
1093 template<bool scaled> int lua_bitmap::blit_priority(lua::state& L, lua::parameters& P)
1094 {
1095 uint32_t dx, dy, sx, sy, w, h, hscl, vscl;
1096 lua_bitmap* src_p;
1097
1098 P(P.skipped(), dx, dy, src_p, sx, sy, w, h);
1099 if(scaled)
1100 P(hscl, P.optional2(vscl, hscl));
1101
1102 xblit<scaled>(srcdest_priority(*this, *src_p), dx, dy, sx, sy, w, h, hscl, vscl);
1103 return 0;
1104 }
1105
1106 int lua_bitmap::save_png(lua::state& L, lua::parameters& P)
1107 {
1108 std::string name, name2;
1109 lua_palette* p;
1110 bool was_filename;
1111
1112 P(P.skipped());
1113 if((was_filename = P.is_string())) P(name);
1114 if(P.is_string()) P(name2);
1115 P(p);
1116
1117 auto buf = this->save_png(*p);
1118 if(was_filename) {
1119 std::string filename = zip::resolverel(name, name2);
1120 std::ofstream strm(filename, std::ios::binary);
1121 if(!strm)
1122 throw std::runtime_error("Can't open output file");
1123 strm.write(&buf[0], buf.size());
1124 if(!strm)
1125 throw std::runtime_error("Can't write output file");
1126 return 0;
1127 } else {
1128 std::ostringstream strm;
1129 strm.write(&buf[0], buf.size());
1130 L.pushlstring(base64_encode(strm.str()));
1131 return 1;
1132 }
1133 }
1134
1135 int lua_bitmap::sample_texture(lua::state& L, lua::parameters& P)
1136 {
1137 lua_bitmap* src_p;
1138 int32_t xx, xy, yx, yy, x0, y0;
1139 uint32_t s;
1140 bool wrap;
1141 uint16_t trans = 0;
1142
1143 P(P.skipped(), src_p, xx, xy, x0, yx, yy, y0, s, wrap);
1144
1145 _sample_texture(pixels, width, height, src_p->pixels, src_p->width, src_p->height, xx, xy, x0, yx, yy, y0,
1146 s, wrap, trans);
1147 return 0;
1148 }
1149
1150 /** DBITMAP **/
1151 lua_dbitmap::lua_dbitmap(lua::state& L, uint32_t w, uint32_t h)
1152 {
1153 if(h > 0 && overcommit(w, h) / h / sizeof(framebuffer::color) < w) throw std::bad_alloc();
1154 width = w;
1155 height = h;
1156 pixels = lua::align_overcommit<lua_dbitmap, framebuffer::color>(this);
1157 //Initialize the bitmap data.
1158 framebuffer::color transparent(-1);
1159 for(size_t i = 0; i < (size_t)width * height; i++)
1160 new(pixels + i) framebuffer::color(transparent);
1161 }
1162
1163 lua_dbitmap::~lua_dbitmap()
1164 {
1165 CORE().fbuf->render_kill_request(this);
1166 }
1167
1168 std::string lua_dbitmap::print()
1169 {
1170 return (stringfmt() << width << "*" << height).str();
1171 }
1172
1173 int lua_dbitmap::create(lua::state& L, lua::parameters& P)
1174 {
1175 uint32_t w, h;
1176 framebuffer::color c;
1177
1178 P(w, h, P.optional(c, -1));
1179
1180 lua_dbitmap* b = lua::_class<lua_dbitmap>::create(L, w, h);
1181 for(size_t i = 0; i < b->width * b->height; i++)
1182 b->pixels[i] = c;
1183 return 1;
1184 }
1185
1186 template<bool outside, bool clip>
1187 int lua_dbitmap::draw(lua::state& L, lua::parameters& P)
1188 {
1189 auto& core = CORE();
1190 int32_t x, y;
1191 lua::objpin<lua_dbitmap> b;
1192
1193 if(!core.lua2->render_ctx) return 0;
1194
1195 P(b, x, y);
1196
1197 int32_t x0 = 0, y0 = 0, dw = b->width, dh = b->height;
1198 if(clip) P(x0, y0, dw, dh);
1199
1200 core.lua2->render_ctx->queue->create_add<render_object_bitmap>(x, y, b, x0, y0, dw, dh, outside);
1201 return 0;
1202 }
1203
1204 int lua_dbitmap::pset(lua::state& L, lua::parameters& P)
1205 {
1206 uint32_t x, y;
1207 framebuffer::color c;
1208
1209 P(P.skipped(), x, y, c);
1210
1211 if(x >= this->width || y >= this->height)
1212 return 0;
1213 this->pixels[y * this->width + x] = c;
1214 return 0;
1215 }
1216
1217 int lua_dbitmap::pget(lua::state& L, lua::parameters& P)
1218 {
1219 uint32_t x, y;
1220
1221 P(P.skipped(), x, y);
1222
1223 if(x >= this->width || y >= this->height)
1224 return 0;
1225 L.pushnumber((this->pixels[y * this->width + x]).asnumber());
1226 return 1;
1227 }
1228
1229 int lua_dbitmap::size(lua::state& L, lua::parameters& P)
1230 {
1231 L.pushnumber(this->width);
1232 L.pushnumber(this->height);
1233 return 2;
1234 }
1235
1236 int lua_dbitmap::hash(lua::state& L, lua::parameters& P)
1237 {
1238 sha256 h;
1239 const int buffersize = 256;
1240 int bufferuse = 0;
1241 char buf[buffersize];
1242 memset(buf, 0, buffersize);
1243 serialization::u64b(buf + 0, this->width);
1244 serialization::u64b(buf + 4, this->height);
1245 bufferuse = 16;
1246 for(unsigned i = 0; i < this->width * this->height; i++) {
1247 if(bufferuse + 6 > buffersize) {
1248 h.write(buf, bufferuse);
1249 bufferuse = 0;
1250 }
1251 serialization::u32b(buf + bufferuse + 0, this->pixels[i].orig);
1252 serialization::u16b(buf + bufferuse + 4, this->pixels[i].origa);
1253 bufferuse += 6;
1254 }
1255 if(bufferuse > 0) h.write(buf, bufferuse);
1256 L.pushlstring(h.read());
1257 return 1;
1258 }
1259
1260 template<bool scaled, bool porterduff> int lua_dbitmap::blit(lua::state& L, lua::parameters& P)
1261 {
1262 uint32_t dx, dy, sx, sy, w, h, hscl, vscl;
1263
1264 P(P.skipped(), dx, dy);
1265
1266 //DBitmap or Bitmap+Palette.
1267 bool src_d = P.is<lua_dbitmap>();
1268 bool src_p = P.is<lua_bitmap>();
1269 int sidx = P.skip();
1270 if(!src_d && !src_p)
1271 P.expected("BITMAP or DBITMAP", sidx);
1272 int spal = 0;
1273 if(src_p)
1274 spal = P.skip(); //Reserve for palette.
1275
1276 P(sx, sy, w, h);
1277
1278 if(scaled)
1279 P(hscl, P.optional2(vscl, hscl));
1280
1281 int64_t ckx = 0x100000000ULL;
1282 porterduff_oper pd_oper;
1283 if(porterduff) {
1284 pd_oper = get_pd_oper(P.arg<std::string>());
1285 } else {
1286 //Hack: Direct-color bitmaps should take color spec, with special NONE value.
1287 if(src_p)
1288 ckx = P.arg_opt<int64_t>(0x10000);
1289 else if(P.is_novalue())
1290 ; //Do nothing.
1291 else
1292 ckx = P.arg<framebuffer::color>().asnumber();
1293 }
1294
1295 operand_dbitmap dest(*this);
1296 if(src_d) {
1297 operand_dbitmap src(*P.arg<lua_dbitmap*>(sidx));
1298 if(porterduff)
1299 xblit_pduff<scaled>(dest, src, dx, dy, sx, sy, w, h, hscl, vscl, pd_oper);
1300 else
1301 xblit_dir<scaled>(dest, src, ckx, dx, dy, sx, sy, w, h, hscl, vscl);
1302 } else if(src_p) {
1303 operand_bitmap_pal src(*P.arg<lua_bitmap*>(sidx), *P.arg<lua_palette*>(spal));
1304 if(porterduff)
1305 xblit_pduff<scaled>(dest, src, dx, dy, sx, sy, w, h, hscl, vscl, pd_oper);
1306 else
1307 xblit_pal<scaled>(dest, src, ckx, dx, dy, sx, sy, w, h, hscl, vscl);
1308 }
1309 return 0;
1310 }
1311
1312 int lua_dbitmap::save_png(lua::state& L, lua::parameters& P)
1313 {
1314 std::string name, name2;
1315 bool was_filename;
1316
1317 P(P.skipped());
1318 if((was_filename = P.is_string())) P(name);
1319 if(P.is_string()) P(name2);
1320
1321 auto buf = this->save_png();
1322 if(was_filename) {
1323 std::string filename = zip::resolverel(name, name2);
1324 std::ofstream strm(filename, std::ios::binary);
1325 if(!strm)
1326 throw std::runtime_error("Can't open output file");
1327 strm.write(&buf[0], buf.size());
1328 if(!strm)
1329 throw std::runtime_error("Can't write output file");
1330 return 0;
1331 } else {
1332 std::ostringstream strm;
1333 strm.write(&buf[0], buf.size());
1334 L.pushlstring(base64_encode(strm.str()));
1335 return 1;
1336 }
1337 }
1338
1339 int lua_dbitmap::adjust_transparency(lua::state& L, lua::parameters& P)
1340 {
1341 uint16_t tadj;
1342
1343 P(P.skipped(), tadj);
1344
1345 for(size_t i = 0; i < width * height; i++)
1346 pixels[i] = tadjust(pixels[i], tadj);
1347 return 0;
1348 }
1349
1350 int lua_dbitmap::sample_texture(lua::state& L, lua::parameters& P)
1351 {
1352 lua_dbitmap* src_p;
1353 int32_t xx, xy, yx, yy, x0, y0;
1354 uint32_t s;
1355 bool wrap;
1356
1357 P(P.skipped(), src_p, xx, xy, x0, yx, yy, y0, s, wrap);
1358
1359 _sample_texture(pixels, width, height, src_p->pixels, src_p->width, src_p->height, xx, xy, x0, yx, yy, y0,
1360 s, wrap, framebuffer::color());
1361 return 0;
1362 }
1363
1364 template<bool png> int lua_loaded_bitmap::load(lua::state& L, lua::parameters& P)
1365 {
1366 std::string name, name2;
1367
1368 P(name, P.optional(name2, ""));
1369
1370 if(png) {
1371 std::string filename = zip::resolverel(name, name2);
1372 return bitmap_load_png_fn(L, filename);
1373 } else
1374 return bitmap_load_fn(L, [&name, &name2]() -> lua_loaded_bitmap {
1375 std::string name3 = zip::resolverel(name, name2);
1376 return lua_loaded_bitmap::load(name3);
1377 });
1378 }
1379
1380 template<bool png> int lua_loaded_bitmap::load_str(lua::state& L, lua::parameters& P)
1381 {
1382 std::string contents;
1383
1384 P(contents);
1385
1386 if(png) {
1387 contents = base64_decode(contents);
1388 std::istringstream strm(contents);
1389 return bitmap_load_png_fn(L, strm);
1390 } else
1391 return bitmap_load_fn(L, [&contents]() -> lua_loaded_bitmap {
1392 std::istringstream strm(contents);
1393 return lua_loaded_bitmap::load(strm);
1394 });
1395 }
Rerecording SNES/GB(C) emulator based on bsnes / gambatte core