cinelerra-5.1/plugins/chromakey/chromakey.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "bccolors.h"
  23 #include "bcdisplayinfo.h"
  24 #include "bcsignals.h"
  25 #include "chromakey.h"
  26 #include "clip.h"
  27 #include "bchash.h"
  28 #include "filexml.h"
  29 #include "guicast.h"
  30 #include "keyframe.h"
  31 #include "language.h"
  32 #include "loadbalance.h"
  33 #include "playback3d.h"
  34 #include "bccolors.h"
  35 #include "pluginvclient.h"
  36 #include "vframe.h"
  37
  38 #include <stdint.h>
  39 #include <string.h>
  40
  41
  42
  43 ChromaKeyConfig::ChromaKeyConfig()
  44 {
  45        reset();
  46 }
  47
  48 void ChromaKeyConfig::reset()
  49
  50 {
  51         red = 0.0;
  52         green = 0.0;
  53         blue = 0.0;
  54         threshold = 60.0;
  55         use_value = 0;
  56         slope = 100;
  57 }
  58
  59
  60 void ChromaKeyConfig::copy_from(ChromaKeyConfig &src)
  61 {
  62         red = src.red;
  63         green = src.green;
  64         blue = src.blue;
  65         threshold = src.threshold;
  66         use_value = src.use_value;
  67         slope = src.slope;
  68 }
  69
  70 int ChromaKeyConfig::equivalent(ChromaKeyConfig &src)
  71 {
  72         return (EQUIV(red, src.red) &&
  73                 EQUIV(green, src.green) &&
  74                 EQUIV(blue, src.blue) &&
  75                 EQUIV(threshold, src.threshold) &&
  76                 EQUIV(slope, src.slope) &&
  77                 use_value == src.use_value);
  78 }
  79
  80 void ChromaKeyConfig::interpolate(ChromaKeyConfig &prev,
  81         ChromaKeyConfig &next,
  82         int64_t prev_frame,
  83         int64_t next_frame,
  84         int64_t current_frame)
  85 {
  86         double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
  87         double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
  88
  89         this->red = prev.red * prev_scale + next.red * next_scale;
  90         this->green = prev.green * prev_scale + next.green * next_scale;
  91         this->blue = prev.blue * prev_scale + next.blue * next_scale;
  92         this->threshold = prev.threshold * prev_scale + next.threshold * next_scale;
  93         this->slope = prev.slope * prev_scale + next.slope * next_scale;
  94         this->use_value = prev.use_value;
  95 }
  96
  97 int ChromaKeyConfig::get_color()
  98 {
  99         int red = (int)(CLIP(this->red, 0, 1) * 0xff);
 100         int green = (int)(CLIP(this->green, 0, 1) * 0xff);
 101         int blue = (int)(CLIP(this->blue, 0, 1) * 0xff);
 102         return (red << 16) | (green << 8) | blue;
 103 }
 104
 105
 106
 107
 108
 109
 110
 111 ChromaKeyWindow::ChromaKeyWindow(ChromaKey *plugin)
 112  : PluginClientWindow(plugin,
 113         320,
 114         220,
 115         320,
 116         220,
 117         0)
 118 {
 119         this->plugin = plugin;
 120         color_thread = 0;
 121 }
 122
 123 ChromaKeyWindow::~ChromaKeyWindow()
 124 {
 125         delete color_thread;
 126 }
 127
 128 void ChromaKeyWindow::create_objects()
 129 {
 130         int x = 10, y = 10, x1 = 100;
 131
 132         BC_Title *title;
 133         add_subwindow(title = new BC_Title(x, y, _("Color:")));
 134         x += title->get_w() + 10;
 135         add_subwindow(color = new ChromaKeyColor(plugin, this, x, y));
 136         x += color->get_w() + 10;
 137         add_subwindow(sample = new BC_SubWindow(x, y, 100, 50));
 138         y += sample->get_h() + 10;
 139         x = 10;
 140
 141         add_subwindow(new BC_Title(x, y, _("Slope:")));
 142         add_subwindow(slope = new ChromaKeySlope(plugin, x1, y));
 143
 144         y += 30;
 145         add_subwindow(new BC_Title(x, y, _("Threshold:")));
 146         add_subwindow(threshold = new ChromaKeyThreshold(plugin, x1, y));
 147
 148
 149         y += 30;
 150         add_subwindow(use_value = new ChromaKeyUseValue(plugin, x1, y));
 151
 152         y += 30;
 153         add_subwindow(use_colorpicker = new ChromaKeyUseColorPicker(plugin, this, x1, y));
 154
 155         y += use_colorpicker->get_h() + 10;
 156         add_subwindow(new ChromaKeyReset(plugin, this, x, y));
 157
 158         color_thread = new ChromaKeyColorThread(plugin, this);
 159
 160         update_sample();
 161         show_window();
 162         flush();
 163 }
 164
 165 void ChromaKeyWindow::update_sample()
 166 {
 167         sample->set_color(plugin->config.get_color());
 168         sample->draw_box(0,
 169                 0,
 170                 sample->get_w(),
 171                 sample->get_h());
 172         sample->set_color(BLACK);
 173         sample->draw_rectangle(0,
 174                 0,
 175                 sample->get_w(),
 176                 sample->get_h());
 177         sample->flash();
 178 }
 179
 180 void ChromaKeyWindow::done_event(int result)
 181 {
 182         color_thread->close_window();
 183 }
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193 ChromaKeyColor::ChromaKeyColor(ChromaKey *plugin,
 194         ChromaKeyWindow *gui,
 195         int x,
 196         int y)
 197  : BC_GenericButton(x,
 198         y,
 199         _("Color..."))
 200 {
 201         this->plugin = plugin;
 202         this->gui = gui;
 203 }
 204 int ChromaKeyColor::handle_event()
 205 {
 206         gui->color_thread->start_window(
 207                 plugin->config.get_color(),
 208                 0xff);
 209         return 1;
 210 }
 211
 212
 213
 214
 215 ChromaKeyThreshold::ChromaKeyThreshold(ChromaKey *plugin, int x, int y)
 216  : BC_FSlider(x,
 217                         y,
 218                         0,
 219                         200,
 220                         200,
 221                         (float)0,
 222                         (float)100,
 223                         plugin->config.threshold)
 224 {
 225         this->plugin = plugin;
 226         set_precision(0.01);
 227 }
 228 int ChromaKeyThreshold::handle_event()
 229 {
 230         plugin->config.threshold = get_value();
 231         plugin->send_configure_change();
 232         return 1;
 233 }
 234
 235
 236 ChromaKeySlope::ChromaKeySlope(ChromaKey *plugin, int x, int y)
 237  : BC_FSlider(x,
 238                         y,
 239                         0,
 240                         200,
 241                         200,
 242                         (float)0,
 243                         (float)100,
 244                         plugin->config.slope)
 245 {
 246         this->plugin = plugin;
 247         set_precision(0.01);
 248 }
 249
 250 int ChromaKeySlope::handle_event()
 251 {
 252         plugin->config.slope = get_value();
 253         plugin->send_configure_change();
 254         return 1;
 255 }
 256
 257 ChromaKeyUseValue::ChromaKeyUseValue(ChromaKey *plugin, int x, int y)
 258  : BC_CheckBox(x, y, plugin->config.use_value, _("Use value"))
 259 {
 260         this->plugin = plugin;
 261 }
 262 int ChromaKeyUseValue::handle_event()
 263 {
 264         plugin->config.use_value = get_value();
 265         plugin->send_configure_change();
 266         return 1;
 267 }
 268
 269 ChromaKeyReset::ChromaKeyReset(ChromaKey *plugin, ChromaKeyWindow *gui, int x, int y)
 270  : BC_GenericButton(x, y, _("Reset"))
 271 {
 272         this->plugin = plugin;
 273         this->gui = gui;
 274 }
 275
 276 int ChromaKeyReset::handle_event()
 277 {
 278         plugin->config.reset();
 279         gui->update_gui();
 280         plugin->send_configure_change();
 281         return 1;
 282 }
 283
 284 ChromaKeyUseColorPicker::ChromaKeyUseColorPicker(ChromaKey *plugin,
 285         ChromaKeyWindow *gui,
 286         int x,
 287         int y)
 288  : BC_GenericButton(x, y, _("Use color picker"))
 289 {
 290         this->plugin = plugin;
 291         this->gui = gui;
 292 }
 293
 294 int ChromaKeyUseColorPicker::handle_event()
 295 {
 296         plugin->config.red = plugin->get_red();
 297         plugin->config.green = plugin->get_green();
 298         plugin->config.blue = plugin->get_blue();
 299         gui->update_sample();
 300         plugin->send_configure_change();
 301         return 1;
 302 }
 303
 304
 305
 306
 307 ChromaKeyColorThread::ChromaKeyColorThread(ChromaKey *plugin, ChromaKeyWindow *gui)
 308  : ColorPicker(1, _("Inner color"))
 309 {
 310         this->plugin = plugin;
 311         this->gui = gui;
 312 }
 313
 314 int ChromaKeyColorThread::handle_new_color(int output, int alpha)
 315 {
 316         plugin->config.red = (float)(output & 0xff0000) / 0xff0000;
 317         plugin->config.green = (float)(output & 0xff00) / 0xff00;
 318         plugin->config.blue = (float)(output & 0xff) / 0xff;
 319         gui->update_sample();
 320         plugin->send_configure_change();
 321         return 1;
 322 }
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333 ChromaKeyServer::ChromaKeyServer(ChromaKey *plugin)
 334  : LoadServer(plugin->PluginClient::smp + 1, plugin->PluginClient::smp + 1)
 335 {
 336         this->plugin = plugin;
 337 }
 338 void ChromaKeyServer::init_packages()
 339 {
 340         for(int i = 0; i < get_total_packages(); i++)
 341         {
 342                 ChromaKeyPackage *pkg = (ChromaKeyPackage*)get_package(i);
 343                 pkg->y1 = plugin->input->get_h() * i / get_total_packages();
 344                 pkg->y2 = plugin->input->get_h() * (i + 1) / get_total_packages();
 345         }
 346
 347 }
 348 LoadClient* ChromaKeyServer::new_client()
 349 {
 350         return new ChromaKeyUnit(plugin, this);
 351 }
 352 LoadPackage* ChromaKeyServer::new_package()
 353 {
 354         return new ChromaKeyPackage;
 355 }
 356
 357
 358
 359 ChromaKeyPackage::ChromaKeyPackage()
 360  : LoadPackage()
 361 {
 362 }
 363
 364 ChromaKeyUnit::ChromaKeyUnit(ChromaKey *plugin, ChromaKeyServer *server)
 365  : LoadClient(server)
 366 {
 367         this->plugin = plugin;
 368 }
 369
 370
 371 void ChromaKeyUnit::process_package(LoadPackage *package)
 372 {
 373         ChromaKeyPackage *pkg = (ChromaKeyPackage*)package;
 374
 375         int w = plugin->input->get_w();
 376
 377         float h, s, v;
 378         HSV::rgb_to_hsv(plugin->config.red,
 379                 plugin->config.green,
 380                 plugin->config.blue,
 381                 h,
 382                 s,
 383                 v);
 384         //float min_hue = h - plugin->config.threshold * 360 / 100;
 385         //float max_hue = h + plugin->config.threshold * 360 / 100;
 386
 387
 388 #define RGB_TO_VALUE(r, g, b) YUV::yuv.rgb_to_y_f((r),(g),(b))
 389
 390 #define OUTER_VARIABLES(plugin) \
 391         float value = RGB_TO_VALUE(plugin->config.red, \
 392                 plugin->config.green, \
 393                 plugin->config.blue); \
 394         float threshold = plugin->config.threshold / 100; \
 395         float min_v = value - threshold; \
 396         float max_v = value + threshold; \
 397         float r_key = plugin->config.red; \
 398         float g_key = plugin->config.green; \
 399         float b_key = plugin->config.blue; \
 400         int y_key, u_key, v_key; \
 401         YUV::yuv.rgb_to_yuv_8( \
 402                 (int)(r_key * 0xff), (int)(g_key * 0xff), (int)(b_key * 0xff), \
 403                 y_key, u_key, v_key); \
 404         float run = plugin->config.slope / 100; \
 405         float threshold_run = threshold + run;
 406
 407         OUTER_VARIABLES(plugin)
 408
 409
 410
 411 #define CHROMAKEY(type, components, max, use_yuv) \
 412 { \
 413         for(int i = pkg->y1; i < pkg->y2; i++) \
 414         { \
 415                 type *row = (type*)plugin->input->get_rows()[i]; \
 416  \
 417                 for(int j = 0; j < w; j++) \
 418                 { \
 419                         float a = 1; \
 420  \
 421 /* Test for value in range */ \
 422                         if(plugin->config.use_value) \
 423                         { \
 424                                 float current_value; \
 425                                 if(use_yuv) \
 426                                 { \
 427                                         float r = (float)row[0] / max; \
 428                                         current_value = r; \
 429                                 } \
 430                                 else \
 431                                 { \
 432                                         float r = (float)row[0] / max; \
 433                                         float g = (float)row[1] / max; \
 434                                         float b = (float)row[2] / max; \
 435                                         current_value = RGB_TO_VALUE(r, g, b); \
 436                                 } \
 437  \
 438 /* Full transparency if in range */ \
 439                                 if(current_value >= min_v && current_value < max_v) \
 440                                 { \
 441                                         a = 0; \
 442                                 } \
 443                                 else \
 444 /* Phased out if below or above range */ \
 445                                 if(current_value < min_v) \
 446                                 { \
 447                                         if(min_v - current_value < run) \
 448                                                 a = (min_v - current_value) / run; \
 449                                 } \
 450                                 else \
 451                                 if(current_value - max_v < run) \
 452                                         a = (current_value - max_v) / run; \
 453                         } \
 454                         else \
 455 /* Use color cube */ \
 456                         { \
 457                                 float difference; \
 458                                 if(use_yuv) \
 459                                 { \
 460                                         type y = row[0]; \
 461                                         type u = row[1]; \
 462                                         type v = row[2]; \
 463                                         difference = sqrt(SQR(y - y_key) + \
 464                                                 SQR(u - u_key) + \
 465                                                 SQR(v - v_key)) / max; \
 466                                 } \
 467                                 else \
 468                                 { \
 469                                         float r = (float)row[0] / max; \
 470                                         float g = (float)row[1] / max; \
 471                                         float b = (float)row[2] / max; \
 472                                         difference = sqrt(SQR(r - r_key) +  \
 473                                                 SQR(g - g_key) + \
 474                                                 SQR(b - b_key)); \
 475                                 } \
 476                                 if(difference < threshold) \
 477                                 { \
 478                                         a = 0; \
 479                                 } \
 480                                 else \
 481                                 if(difference < threshold_run) \
 482                                 { \
 483                                         a = (difference - threshold) / run; \
 484                                 } \
 485  \
 486                         } \
 487  \
 488 /* Multiply alpha and put back in frame */ \
 489                         if(components == 4) \
 490                         { \
 491                                 row[3] = MIN((type)(a * max), row[3]); \
 492                         } \
 493                         else \
 494                         if(use_yuv) \
 495                         { \
 496                                 row[0] = (type)(a * row[0]); \
 497                                 row[1] = (type)(a * (row[1] - (max / 2 + 1)) + max / 2 + 1); \
 498                                 row[2] = (type)(a * (row[2] - (max / 2 + 1)) + max / 2 + 1); \
 499                         } \
 500                         else \
 501                         { \
 502                                 row[0] = (type)(a * row[0]); \
 503                                 row[1] = (type)(a * row[1]); \
 504                                 row[2] = (type)(a * row[2]); \
 505                         } \
 506  \
 507                         row += components; \
 508                 } \
 509         } \
 510 }
 511
 512
 513
 514
 515         switch(plugin->input->get_color_model())
 516         {
 517                 case BC_RGB_FLOAT:
 518                         CHROMAKEY(float, 3, 1.0, 0);
 519                         break;
 520                 case BC_RGBA_FLOAT:
 521                         CHROMAKEY(float, 4, 1.0, 0);
 522                         break;
 523                 case BC_RGB888:
 524                         CHROMAKEY(unsigned char, 3, 0xff, 0);
 525                         break;
 526                 case BC_RGBA8888:
 527                         CHROMAKEY(unsigned char, 4, 0xff, 0);
 528                         break;
 529                 case BC_YUV888:
 530                         CHROMAKEY(unsigned char, 3, 0xff, 1);
 531                         break;
 532                 case BC_YUVA8888:
 533                         CHROMAKEY(unsigned char, 4, 0xff, 1);
 534                         break;
 535                 case BC_YUV161616:
 536                         CHROMAKEY(uint16_t, 3, 0xffff, 1);
 537                         break;
 538                 case BC_YUVA16161616:
 539                         CHROMAKEY(uint16_t, 4, 0xffff, 1);
 540                         break;
 541         }
 542
 543 }
 544
 545
 546
 547
 548
 549 REGISTER_PLUGIN(ChromaKey)
 550
 551
 552
 553 ChromaKey::ChromaKey(PluginServer *server)
 554  : PluginVClient(server)
 555 {
 556
 557         engine = 0;
 558 }
 559
 560 ChromaKey::~ChromaKey()
 561 {
 562
 563         delete engine;
 564 }
 565
 566
 567 int ChromaKey::process_buffer(VFrame *frame,
 568                 int64_t start_position,
 569                 double frame_rate)
 570 {
 571 SET_TRACE
 572
 573         load_configuration();
 574         this->input = frame;
 575         this->output = frame;
 576
 577         read_frame(frame,
 578                 0,
 579                 start_position,
 580                 frame_rate,
 581                 get_use_opengl());
 582
 583         if(EQUIV(config.threshold, 0))
 584         {
 585                 return 1;
 586         }
 587         else
 588         {
 589                 if(get_use_opengl()) return run_opengl();
 590
 591                 if(!engine) engine = new ChromaKeyServer(this);
 592                 engine->process_packages();
 593         }
 594 SET_TRACE
 595
 596         return 1;
 597 }
 598
 599 const char* ChromaKey::plugin_title() { return N_("Chroma key"); }
 600 int ChromaKey::is_realtime() { return 1; }
 601
 602 NEW_WINDOW_MACRO(ChromaKey, ChromaKeyWindow)
 603
 604 LOAD_CONFIGURATION_MACRO(ChromaKey, ChromaKeyConfig)
 605
 606
 607 void ChromaKey::save_data(KeyFrame *keyframe)
 608 {
 609         FileXML output;
 610         output.set_shared_output(keyframe->get_data(), MESSAGESIZE);
 611         output.tag.set_title("CHROMAKEY");
 612         output.tag.set_property("RED", config.red);
 613         output.tag.set_property("GREEN", config.green);
 614         output.tag.set_property("BLUE", config.blue);
 615         output.tag.set_property("THRESHOLD", config.threshold);
 616         output.tag.set_property("SLOPE", config.slope);
 617         output.tag.set_property("USE_VALUE", config.use_value);
 618         output.append_tag();
 619         output.tag.set_title("/CHROMAKEY");
 620         output.append_tag();
 621         output.append_newline();
 622         output.terminate_string();
 623 }
 624
 625 void ChromaKey::read_data(KeyFrame *keyframe)
 626 {
 627         FileXML input;
 628
 629         input.set_shared_input(keyframe->get_data(), strlen(keyframe->get_data()));
 630
 631         while(!input.read_tag())
 632         {
 633                 if(input.tag.title_is("CHROMAKEY"))
 634                 {
 635                         config.red = input.tag.get_property("RED", config.red);
 636                         config.green = input.tag.get_property("GREEN", config.green);
 637                         config.blue = input.tag.get_property("BLUE", config.blue);
 638                         config.threshold = input.tag.get_property("THRESHOLD", config.threshold);
 639                         config.slope = input.tag.get_property("SLOPE", config.slope);
 640                         config.use_value = input.tag.get_property("USE_VALUE", config.use_value);
 641                 }
 642         }
 643 }
 644
 645
 646
 647 void ChromaKey::update_gui()
 648 {
 649         if(thread)
 650         {
 651                 load_configuration();
 652                 thread->window->lock_window();
 653                 ((ChromaKeyWindow *)(thread->window))->update_gui();
 654                 thread->window->unlock_window();
 655         }
 656 }
 657
 658 void ChromaKeyWindow::update_gui()
 659 {
 660         ChromaKeyConfig &config = plugin->config;
 661         threshold->update(config.threshold);
 662         slope->update(config.slope);
 663         use_value->update(config.use_value);
 664         update_sample();
 665 }
 666
 667 int ChromaKey::handle_opengl()
 668 {
 669 #ifdef HAVE_GL
 670         OUTER_VARIABLES(this)
 671
 672
 673
 674         static const char *uniform_frag =
 675                 "uniform sampler2D tex;\n"
 676                 "uniform float min_v;\n"
 677                 "uniform float max_v;\n"
 678                 "uniform float run;\n"
 679                 "uniform float threshold;\n"
 680                 "uniform float threshold_run;\n"
 681                 "uniform vec3 key;\n";
 682
 683         static const char *get_yuvvalue_frag =
 684                 "float get_value(vec4 color)\n"
 685                 "{\n"
 686                 "       return abs(color.r);\n"
 687                 "}\n";
 688
 689         static const char *get_rgbvalue_frag =
 690                 "uniform vec3 rgb_to_y_vector;\n"
 691                 "uniform float yminf;\n"
 692                 "float get_value(vec4 color)\n"
 693                 "{\n"
 694                 "       return dot(color.rgb, rgb_to_y_vector) + yminf;\n"
 695                 "}\n";
 696
 697         static const char *value_frag =
 698                 "void main()\n"
 699                 "{\n"
 700                 "       vec4 color = texture2D(tex, gl_TexCoord[0].st);\n"
 701                 "       float value = get_value(color);\n"
 702                 "       float alpha = 1.0;\n"
 703                 "\n"
 704                 "       if(value >= min_v && value < max_v)\n"
 705                 "               alpha = 0.0;\n"
 706                 "       else\n"
 707                 "       if(value < min_v)\n"
 708                 "       {\n"
 709                 "               if(min_v - value < run)\n"
 710                 "                       alpha = (min_v - value) / run;\n"
 711                 "       }\n"
 712                 "       else\n"
 713                 "       if(value - max_v < run)\n"
 714                 "               alpha = (value - max_v) / run;\n"
 715                 "\n"
 716                 "       gl_FragColor = vec4(color.rgb, alpha);\n"
 717                 "}\n";
 718
 719         static const char *cube_frag =
 720                 "void main()\n"
 721                 "{\n"
 722                 "       vec4 color = texture2D(tex, gl_TexCoord[0].st);\n"
 723                 "       float difference = length(color.rgb - key);\n"
 724                 "       float alpha = 1.0;\n"
 725                 "       if(difference < threshold)\n"
 726                 "               alpha = 0.0;\n"
 727                 "       else\n"
 728                 "       if(difference < threshold_run)\n"
 729                 "               alpha = (difference - threshold) / run;\n"
 730                 "       gl_FragColor = vec4(color.rgb, min(color.a, alpha));\n"
 731                 "}\n";
 732
 733
 734
 735         get_output()->to_texture();
 736         get_output()->enable_opengl();
 737         get_output()->init_screen();
 738
 739         const char *shader_stack[16];
 740         memset(shader_stack,0, sizeof(shader_stack));
 741         int current_shader = 0;
 742         shader_stack[current_shader++] = uniform_frag;
 743
 744         switch(get_output()->get_color_model()) {
 745         case BC_YUV888:
 746         case BC_YUVA8888:
 747                 if( config.use_value ) {
 748                         shader_stack[current_shader++] = get_yuvvalue_frag;
 749                         shader_stack[current_shader++] = value_frag;
 750                 }
 751                 else {
 752                         shader_stack[current_shader++] = cube_frag;
 753                 }
 754                 break;
 755
 756         default:
 757                 if(config.use_value) {
 758                         shader_stack[current_shader++] = get_rgbvalue_frag;
 759                         shader_stack[current_shader++] = value_frag;
 760                 }
 761                 else {
 762                         shader_stack[current_shader++] = cube_frag;
 763                 }
 764                 break;
 765         }
 766 SET_TRACE
 767
 768         shader_stack[current_shader] = 0;
 769         unsigned int shader = VFrame::make_shader(shader_stack);
 770         if( shader > 0 ) {
 771                 get_output()->bind_texture(0);
 772                 glUseProgram(shader);
 773                 glUniform1i(glGetUniformLocation(shader, "tex"), 0);
 774                 glUniform1f(glGetUniformLocation(shader, "min_v"), min_v);
 775                 glUniform1f(glGetUniformLocation(shader, "max_v"), max_v);
 776                 glUniform1f(glGetUniformLocation(shader, "run"), run);
 777                 glUniform1f(glGetUniformLocation(shader, "threshold"), threshold);
 778                 glUniform1f(glGetUniformLocation(shader, "threshold_run"), threshold_run);
 779                 if(get_output()->get_color_model() != BC_YUV888 &&
 780                         get_output()->get_color_model() != BC_YUVA8888)
 781                         glUniform3f(glGetUniformLocation(shader, "key"),
 782                                 r_key, g_key, b_key);
 783                 else
 784                         glUniform3f(glGetUniformLocation(shader, "key"),
 785                                 (float)y_key / 0xff, (float)u_key / 0xff, (float)v_key / 0xff);
 786                 if(config.use_value)
 787                         BC_GL_RGB_TO_Y(shader);
 788         }
 789 SET_TRACE
 790
 791         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 792         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 793
 794         if(BC_CModels::components(get_output()->get_color_model()) == 3)
 795         {
 796                 glEnable(GL_BLEND);
 797                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 798                 get_output()->clear_pbuffer();
 799         }
 800 SET_TRACE
 801
 802         get_output()->draw_texture();
 803
 804         glUseProgram(0);
 805         get_output()->set_opengl_state(VFrame::SCREEN);
 806         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 807         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 808         glDisable(GL_BLEND);
 809 SET_TRACE
 810         return 0;
 811 #endif
 812 }
 813