1 /* === S Y N F I G ========================================================= */
2 /*! \file layer_bitmap.cpp
3 ** \brief Template Header
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
10 ** This package is free software; you can redistribute it and/or
11 ** modify it under the terms of the GNU General Public License as
12 ** published by the Free Software Foundation; either version 2 of
13 ** the License, or (at your option) any later version.
15 ** This package is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ** General Public License for more details.
21 /* ========================================================================= */
23 /* === H E A D E R S ======================================================= */
32 #include "layer_bitmap.h"
46 #include "paramdesc.h"
51 /* === U S I N G =========================================================== */
53 using namespace synfig;
57 /* === G L O B A L S ======================================================= */
59 /* === P R O C E D U R E S ================================================= */
61 /* === M E T H O D S ======================================================= */
63 synfig::Layer_Bitmap::Layer_Bitmap():
64 Layer_Composite (1.0,Color::BLEND_COMPOSITE),
72 Layer::Vocab voc(get_param_vocab());
73 Layer::fill_static(voc);
74 set_param_static("c", true);
78 synfig::Layer_Bitmap::set_param(const String & param, ValueBase value)
83 if(param=="gamma_adjust"&& value.get_type()==ValueBase::TYPE_REAL)
85 gamma_adjust=1.0/value.get(Real());
86 //gamma_adjust.set_gamma(1.0/value.get(Real()));
90 return Layer_Composite::set_param(param,value);
94 synfig::Layer_Bitmap::get_param(const String & param)const
99 if(param=="gamma_adjust")
100 return 1.0/gamma_adjust;
104 if (trimmed) return int(width);
105 return surface.get_w();
109 if (trimmed) return int(height);
110 return surface.get_h();
113 return Layer_Composite::get_param(param);
117 Layer_Bitmap::get_param_vocab()const
119 Layer::Vocab ret(Layer_Composite::get_param_vocab());
121 ret.push_back(ParamDesc("tl")
122 .set_local_name(_("Top-Left"))
123 .set_description(_("Upper left-hand Corner of image"))
126 ret.push_back(ParamDesc("br")
127 .set_local_name(_("Bottom-Right"))
128 .set_description(_("Lower right-hand Corner of image"))
131 ret.push_back(ParamDesc("c")
132 .set_local_name(_("Interpolation"))
133 .set_description(_("What type of interpolation to use"))
135 .add_enum_value(0,"nearest",_("Nearest Neighbor"))
136 .add_enum_value(1,"linear",_("Linear"))
137 .add_enum_value(2,"cosine",_("Cosine"))
138 .add_enum_value(3,"cubic",_("Cubic"))
141 ret.push_back(ParamDesc("gamma_adjust")
142 .set_local_name(_("Gamma Adjustment"))
148 synfig::Layer::Handle
149 Layer_Bitmap::hit_check(synfig::Context context, const synfig::Point &pos)const
154 surface_pos[0]/=br[0]-tl[0];
155 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
157 surface_pos[1]/=br[1]-tl[1];
158 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
160 return const_cast<Layer_Bitmap*>(this);
164 return context.hit_check(pos);
169 synfig::Layer_Bitmap::filter(Color& x)const
171 if(gamma_adjust!=1.0)
173 x.set_r(powf((float)x.get_r(),gamma_adjust));
174 x.set_g(powf((float)x.get_g(),gamma_adjust));
175 x.set_b(powf((float)x.get_b(),gamma_adjust));
181 synfig::Layer_Bitmap::get_color(Context context, const Point &pos)const
186 return context.get_color(pos);
190 surface_pos[0]/=br[0]-tl[0];
191 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
193 surface_pos[1]/=br[1]-tl[1];
194 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
198 surface_pos[0]*=width;
199 surface_pos[1]*=height;
201 if (surface_pos[0] > left+surface.get_w() || surface_pos[0] < left || surface_pos[1] > top+surface.get_h() || surface_pos[1] < top)
202 return context.get_color(pos);
204 surface_pos[0] -= left;
205 surface_pos[1] -= top;
209 surface_pos[0]*=surface.get_w();
210 surface_pos[1]*=surface.get_h();
213 Color ret(Color::alpha());
221 ret=surface.cubic_sample(surface_pos[0],surface_pos[1]);
225 ret=surface.cosine_sample(surface_pos[0],surface_pos[1]);
228 ret=surface.linear_sample(surface_pos[0],surface_pos[1]);
230 case 0: // Nearest Neighbor
233 int x(min(surface.get_w()-1,max(0,round_to_int(surface_pos[0]))));
234 int y(min(surface.get_h()-1,max(0,round_to_int(surface_pos[1]))));
242 if(get_amount()==1 && get_blend_method()==Color::BLEND_STRAIGHT)
245 return Color::blend(ret,context.get_color(pos),get_amount(),get_blend_method());
249 return context.get_color(pos);
253 Layer_Bitmap::accelerated_render(Context context,Surface *out_surface,int quality, const RendDesc &renddesc, ProgressCallback *cb) const
258 else if(quality>=5 && interp>1)
261 // We can only handle NN and Linear at the moment
263 // return Layer_Composite::accelerated_render(context,out_surface,quality,renddesc,cb);
265 //if we don't actually have a valid surface just skip us
266 if(!surface.is_valid())
268 // Render what is behind us
269 return context.accelerated_render(out_surface,quality,renddesc,cb);
272 SuperCallback subcb(cb,1,10000,10001+renddesc.get_h());
274 if( get_amount()==1 &&
275 get_blend_method()==Color::BLEND_STRAIGHT &&
277 renddesc.get_tl()==tl &&
278 renddesc.get_br()==br)
280 // Check for the trivial case
281 if(surface.get_w()==renddesc.get_w() && surface.get_h()==renddesc.get_h() && gamma_adjust==1.0f)
283 if(cb && !cb->amount_complete(0,100)) return false;
284 *out_surface=surface;
285 if(cb && !cb->amount_complete(100,100)) return false;
288 out_surface->set_wh(renddesc.get_w(),renddesc.get_h());
292 // Render what is behind us
293 if(!context.accelerated_render(out_surface,quality,renddesc,&subcb))
297 if(cb && !cb->amount_complete(10000,10001+renddesc.get_h())) return false;
299 Point obr = renddesc.get_br(),
300 otl = renddesc.get_tl();
302 //Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
303 //Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
305 //A = representation of input (just tl,br) //just a scaling right now
306 //B = representation of output (just tl,br) //just a scaling right now
307 //sa = scaling for input (0,1) -> (0,w/h)
308 //sb = scaling for output (0,1) -> (0,w/h)
310 float outwf = obr[0] - otl[0];
311 float outhf = obr[1] - otl[1];
313 int inw = surface.get_w();
314 int inh = surface.get_h();
316 int outw = renddesc.get_w();
317 int outh = renddesc.get_h();
324 inwf = (br[0] - tl[0])*surface.get_w()/width;
325 inhf = (br[1] - tl[1])*surface.get_h()/height;
326 itl = Point(tl[0] + (br[0]-tl[0])*left/width,
327 tl[1] + (br[1]-tl[1])*top/height);
328 ibr = Point(tl[0] + (br[0]-tl[0])*(left+inw)/width,
329 tl[1] + (br[1]-tl[1])*(top+inh)/height);
333 inwf = br[0] - tl[0];
334 inhf = br[1] - tl[1];
339 //need to get the input coords in output space, so we can clip
341 //get the desired corners of the bitmap (in increasing order) in integers
342 //floating point corners
343 float x1f = (itl[0] - otl[0])*outw/outwf;
344 float x2f = (ibr[0] - otl[0])*outw/outwf;
345 float y1f = (itl[1] - otl[1])*outh/outhf;
346 float y2f = (ibr[1] - otl[1])*outh/outhf;
348 if(x1f > x2f) swap(x1f,x2f);
349 if(y1f > y2f) swap(y1f,y2f);
351 int x_start = max(0,(int)floor(x1f)); //probably floor
352 int x_end = min(outw,(int)ceil(x2f)); //probably ceil
353 int y_start = max(0,(int)floor(y1f)); //probably floor
354 int y_end = min(outh,(int)ceil(y2f)); //probably ceil
356 //need to get the x,y,dx,dy values from output space to input, so we can do fast interpolation
358 //get the starting position in input space... for interpolating
360 // in int -> out float:
361 // Sb(B^-1)A(Sa^-1) x
362 float inx_start = (((x_start/*+0.5f*/)*outwf/outw + otl[0]) - itl[0])*inw/inwf; //may want to bias this (center of pixel)???
363 float iny_start = (((y_start/*+0.5f*/)*outhf/outh + otl[1]) - itl[1])*inh/inhf; //may want to bias this (center of pixel)???
365 //calculate the delta values in input space for one pixel movement in output space
366 //same matrix but with a vector instead of a point...
367 float indx = outwf*(inw)/((outw)*inwf); //translations died
368 float indy = outhf*(inh)/((outh)*inhf); //translations died
370 //perhaps use a DDA algorithm... if faster...
371 // will still want pixel fractions to be floating point since colors are
373 //synfig::info("xstart:%d ystart:%d xend:%d yend:%d",x_start,y_start,x_end,y_end);
375 //start drawing at the start of the bitmap (either origin or corner of input...)
377 Surface::alpha_pen pen(out_surface->get_pen(x_start,y_start));
378 pen.set_alpha(get_amount());
379 pen.set_blend_method(get_blend_method());
381 //check if we should use the downscale filtering
384 //the stride of the value should be inverted because we want to downsample
385 //when the stride is small, not big
386 //int multw = (int)ceil(indx);
387 //int multh = (int)ceil(indy);
389 if(indx > 1.7 || indy > 1.7)
391 /*synfig::info("Decided to downsample? ratios - (%f,%f) -> (%d,%d)",
392 indx, indy, multw, multh); */
394 //use sample rect here...
399 //Point sample - truncate
400 iny = iny_start;//+0.5f;
401 for(y = y_start; y < y_end; ++y, pen.inc_y(), iny += indy)
403 inx = inx_start;//+0.5f;
404 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
406 Color rc = surface.sample_rect_clip(inx,iny,inx+indx,iny+indy);
407 pen.put_value(filter(rc));
409 pen.dec_x(x_end-x_start);
412 //Color c = (*out_surface)[0][0];
413 //synfig::info("ValueBase of first pixel = (%f,%f,%f,%f)",c.get_r(),c.get_g(),c.get_b(),c.get_a());
419 //perform normal interpolation
422 //synfig::info("Decided to do nearest neighbor");
426 //Point sample - truncate
427 iny = iny_start;//+0.5f;
428 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
430 inx = inx_start;//+0.5f;
431 int yclamp = min(inh-1, max(0, round_to_int(iny)));
432 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
434 int xclamp = min(inw-1, max(0, round_to_int(inx)));
435 Color c = filter(surface[yclamp][xclamp]);
436 pen.put_value(c); //must get rid of the clip
438 pen.dec_x(x_end-x_start);
446 //float xmf,xpf,ymf,ypf;
451 //can probably buffer for x values...
453 //loop and based on inx,iny sample input image
455 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
458 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
460 Color col(surface.linear_sample(inx,iny));
461 pen.put_value(filter(col));
463 pen.dec_x(x_end-x_start);
472 //float xmf,xpf,ymf,ypf;
477 //can probably buffer for x values...
479 //loop and based on inx,iny sample input image
481 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
484 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
486 Color col(surface.cosine_sample(inx,iny));
487 pen.put_value(filter(col));
489 pen.dec_x(x_end-x_start);
497 //float xmf,xpf,ymf,ypf;
502 //can probably buffer for x values...
504 //loop and based on inx,iny sample input image
506 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
509 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
511 Color col(surface.cubic_sample(inx,iny));
512 pen.put_value(filter(col));
514 pen.dec_x(x_end-x_start);
523 Layer_Bitmap::get_bounding_rect()const