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),
75 synfig::Layer_Bitmap::set_param(const String & param, ValueBase value)
80 if(param=="gamma_adjust"&& value.get_type()==ValueBase::TYPE_REAL)
82 gamma_adjust=1.0/value.get(Real());
83 //gamma_adjust.set_gamma(1.0/value.get(Real()));
87 return Layer_Composite::set_param(param,value);
91 synfig::Layer_Bitmap::get_param(const String & param)const
96 if(param=="gamma_adjust")
97 return 1.0/gamma_adjust;
101 if (trimmed) return int(width);
102 return surface.get_w();
106 if (trimmed) return int(height);
107 return surface.get_h();
110 return Layer_Composite::get_param(param);
114 Layer_Bitmap::get_param_vocab()const
116 Layer::Vocab ret(Layer_Composite::get_param_vocab());
118 ret.push_back(ParamDesc("tl")
119 .set_local_name(_("Top-Left"))
120 .set_description(_("Upper left-hand Corner of image"))
123 ret.push_back(ParamDesc("br")
124 .set_local_name(_("Bottom-Right"))
125 .set_description(_("Lower right-hand Corner of image"))
128 ret.push_back(ParamDesc("c")
129 .set_local_name(_("Interpolation"))
130 .set_description(_("What type of interpolation to use"))
132 .add_enum_value(0,"nearest",_("Nearest Neighbor"))
133 .add_enum_value(1,"linear",_("Linear"))
134 .add_enum_value(2,"cosine",_("Cosine"))
135 .add_enum_value(3,"cubic",_("Cubic"))
138 ret.push_back(ParamDesc("gamma_adjust")
139 .set_local_name(_("Gamma Adjustment"))
145 synfig::Layer::Handle
146 Layer_Bitmap::hit_check(synfig::Context context, const synfig::Point &pos)const
151 surface_pos[0]/=br[0]-tl[0];
152 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
154 surface_pos[1]/=br[1]-tl[1];
155 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
157 return const_cast<Layer_Bitmap*>(this);
161 return context.hit_check(pos);
166 synfig::Layer_Bitmap::filter(Color& x)const
168 if(gamma_adjust!=1.0)
170 x.set_r(powf((float)x.get_r(),gamma_adjust));
171 x.set_g(powf((float)x.get_g(),gamma_adjust));
172 x.set_b(powf((float)x.get_b(),gamma_adjust));
178 synfig::Layer_Bitmap::get_color(Context context, const Point &pos)const
183 return context.get_color(pos);
187 surface_pos[0]/=br[0]-tl[0];
188 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
190 surface_pos[1]/=br[1]-tl[1];
191 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
195 surface_pos[0]*=width;
196 surface_pos[1]*=height;
198 if (surface_pos[0] > left+surface.get_w() || surface_pos[0] < left || surface_pos[1] > top+surface.get_h() || surface_pos[1] < top)
199 return context.get_color(pos);
201 surface_pos[0] -= left;
202 surface_pos[1] -= top;
206 surface_pos[0]*=surface.get_w();
207 surface_pos[1]*=surface.get_h();
210 Color ret(Color::alpha());
218 ret=surface.cubic_sample(surface_pos[0],surface_pos[1]);
222 ret=surface.cosine_sample(surface_pos[0],surface_pos[1]);
225 ret=surface.linear_sample(surface_pos[0],surface_pos[1]);
227 case 0: // Nearest Neighbor
230 int x(min(surface.get_w()-1,max(0,round_to_int(surface_pos[0]))));
231 int y(min(surface.get_h()-1,max(0,round_to_int(surface_pos[1]))));
239 if(get_amount()==1 && get_blend_method()==Color::BLEND_STRAIGHT)
242 return Color::blend(ret,context.get_color(pos),get_amount(),get_blend_method());
246 return context.get_color(pos);
250 Layer_Bitmap::accelerated_render(Context context,Surface *out_surface,int quality, const RendDesc &renddesc, ProgressCallback *cb) const
255 else if(quality>=5 && interp>1)
258 // We can only handle NN and Linear at the moment
260 // return Layer_Composite::accelerated_render(context,out_surface,quality,renddesc,cb);
262 //if we don't actually have a valid surface just skip us
263 if(!surface.is_valid())
265 // Render what is behind us
266 return context.accelerated_render(out_surface,quality,renddesc,cb);
269 SuperCallback subcb(cb,1,10000,10001+renddesc.get_h());
271 if( get_amount()==1 &&
272 get_blend_method()==Color::BLEND_STRAIGHT &&
274 renddesc.get_tl()==tl &&
275 renddesc.get_br()==br)
277 // Check for the trivial case
278 if(surface.get_w()==renddesc.get_w() && surface.get_h()==renddesc.get_h() && gamma_adjust==1.0f)
280 if(cb && !cb->amount_complete(0,100)) return false;
281 *out_surface=surface;
282 if(cb && !cb->amount_complete(100,100)) return false;
285 out_surface->set_wh(renddesc.get_w(),renddesc.get_h());
289 // Render what is behind us
290 if(!context.accelerated_render(out_surface,quality,renddesc,&subcb))
294 if(cb && !cb->amount_complete(10000,10001+renddesc.get_h())) return false;
296 Point obr = renddesc.get_br(),
297 otl = renddesc.get_tl();
299 //Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
300 //Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
302 //A = representation of input (just tl,br) //just a scaling right now
303 //B = representation of output (just tl,br) //just a scaling right now
304 //sa = scaling for input (0,1) -> (0,w/h)
305 //sb = scaling for output (0,1) -> (0,w/h)
307 float outwf = obr[0] - otl[0];
308 float outhf = obr[1] - otl[1];
310 int inw = surface.get_w();
311 int inh = surface.get_h();
313 int outw = renddesc.get_w();
314 int outh = renddesc.get_h();
321 inwf = (br[0] - tl[0])*surface.get_w()/width;
322 inhf = (br[1] - tl[1])*surface.get_h()/height;
323 itl = Point(tl[0] + (br[0]-tl[0])*left/width,
324 tl[1] + (br[1]-tl[1])*top/height);
325 ibr = Point(tl[0] + (br[0]-tl[0])*(left+inw)/width,
326 tl[1] + (br[1]-tl[1])*(top+inh)/height);
330 inwf = br[0] - tl[0];
331 inhf = br[1] - tl[1];
336 //need to get the input coords in output space, so we can clip
338 //get the desired corners of the bitmap (in increasing order) in integers
339 //floating point corners
340 float x1f = (itl[0] - otl[0])*outw/outwf;
341 float x2f = (ibr[0] - otl[0])*outw/outwf;
342 float y1f = (itl[1] - otl[1])*outh/outhf;
343 float y2f = (ibr[1] - otl[1])*outh/outhf;
345 if(x1f > x2f) swap(x1f,x2f);
346 if(y1f > y2f) swap(y1f,y2f);
348 int x_start = max(0,(int)floor(x1f)); //probably floor
349 int x_end = min(outw,(int)ceil(x2f)); //probably ceil
350 int y_start = max(0,(int)floor(y1f)); //probably floor
351 int y_end = min(outh,(int)ceil(y2f)); //probably ceil
353 //need to get the x,y,dx,dy values from output space to input, so we can do fast interpolation
355 //get the starting position in input space... for interpolating
357 // in int -> out float:
358 // Sb(B^-1)A(Sa^-1) x
359 float inx_start = (((x_start/*+0.5f*/)*outwf/outw + otl[0]) - itl[0])*inw/inwf; //may want to bias this (center of pixel)???
360 float iny_start = (((y_start/*+0.5f*/)*outhf/outh + otl[1]) - itl[1])*inh/inhf; //may want to bias this (center of pixel)???
362 //calculate the delta values in input space for one pixel movement in output space
363 //same matrix but with a vector instead of a point...
364 float indx = outwf*(inw)/((outw)*inwf); //translations died
365 float indy = outhf*(inh)/((outh)*inhf); //translations died
367 //perhaps use a DDA algorithm... if faster...
368 // will still want pixel fractions to be floating point since colors are
370 //synfig::info("xstart:%d ystart:%d xend:%d yend:%d",x_start,y_start,x_end,y_end);
372 //start drawing at the start of the bitmap (either origin or corner of input...)
374 Surface::alpha_pen pen(out_surface->get_pen(x_start,y_start));
375 pen.set_alpha(get_amount());
376 pen.set_blend_method(get_blend_method());
378 //check if we should use the downscale filtering
381 //the stride of the value should be inverted because we want to downsample
382 //when the stride is small, not big
383 //int multw = (int)ceil(indx);
384 //int multh = (int)ceil(indy);
386 if(indx > 1.7 || indy > 1.7)
388 /*synfig::info("Decided to downsample? ratios - (%f,%f) -> (%d,%d)",
389 indx, indy, multw, multh); */
391 //use sample rect here...
396 //Point sample - truncate
397 iny = iny_start;//+0.5f;
398 for(y = y_start; y < y_end; ++y, pen.inc_y(), iny += indy)
400 inx = inx_start;//+0.5f;
401 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
403 Color rc = surface.sample_rect_clip(inx,iny,inx+indx,iny+indy);
404 pen.put_value(filter(rc));
406 pen.dec_x(x_end-x_start);
409 //Color c = (*out_surface)[0][0];
410 //synfig::info("ValueBase of first pixel = (%f,%f,%f,%f)",c.get_r(),c.get_g(),c.get_b(),c.get_a());
416 //perform normal interpolation
419 //synfig::info("Decided to do nearest neighbor");
423 //Point sample - truncate
424 iny = iny_start;//+0.5f;
425 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
427 inx = inx_start;//+0.5f;
428 int yclamp = min(inh-1, max(0, round_to_int(iny)));
429 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
431 int xclamp = min(inw-1, max(0, round_to_int(inx)));
432 Color c = filter(surface[yclamp][xclamp]);
433 pen.put_value(c); //must get rid of the clip
435 pen.dec_x(x_end-x_start);
443 //float xmf,xpf,ymf,ypf;
448 //can probably buffer for x values...
450 //loop and based on inx,iny sample input image
452 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
455 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
457 Color col(surface.linear_sample(inx,iny));
458 pen.put_value(filter(col));
460 pen.dec_x(x_end-x_start);
469 //float xmf,xpf,ymf,ypf;
474 //can probably buffer for x values...
476 //loop and based on inx,iny sample input image
478 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
481 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
483 Color col(surface.cosine_sample(inx,iny));
484 pen.put_value(filter(col));
486 pen.dec_x(x_end-x_start);
494 //float xmf,xpf,ymf,ypf;
499 //can probably buffer for x values...
501 //loop and based on inx,iny sample input image
503 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
506 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
508 Color col(surface.cubic_sample(inx,iny));
509 pen.put_value(filter(col));
511 pen.dec_x(x_end-x_start);
520 Layer_Bitmap::get_bounding_rect()const