cinelerra-5.1/plugins/histogram/histogram.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008-2012 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 <math.h>
  23 #include <stdint.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "bcdisplayinfo.h"
  28 #include "bcsignals.h"
  29 #include "clip.h"
  30 #include "bchash.h"
  31 #include "filexml.h"
  32 #include "histogram.h"
  33 #include "histogramconfig.h"
  34 #include "histogramwindow.h"
  35 #include "keyframe.h"
  36 #include "language.h"
  37 #include "loadbalance.h"
  38 #include "playback3d.h"
  39 #include "bccolors.h"
  40 #include "vframe.h"
  41 #include "workarounds.h"
  42
  43 #include "aggregated.h"
  44 #include "../colorbalance/aggregated.h"
  45 #include "../interpolate/aggregated.h"
  46 #include "../gamma/aggregated.h"
  47
  48 class HistogramMain;
  49 class HistogramEngine;
  50 class HistogramWindow;
  51
  52
  53
  54
  55
  56 REGISTER_PLUGIN(HistogramMain)
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66 HistogramMain::HistogramMain(PluginServer *server)
  67  : PluginVClient(server)
  68 {
  69
  70         engine = 0;
  71         for(int i = 0; i < HISTOGRAM_MODES; i++)
  72         {
  73                 lookup[i] = 0;
  74                 accum[i] = 0;
  75                 preview_lookup[i] = 0;
  76         }
  77         current_point = -1;
  78         mode = HISTOGRAM_VALUE;
  79         dragging_point = 0;
  80         input = 0;
  81         output = 0;
  82         w = 440;
  83         h = 500;
  84         parade = 0;
  85 }
  86
  87 HistogramMain::~HistogramMain()
  88 {
  89
  90         for(int i = 0; i < HISTOGRAM_MODES;i++)
  91         {
  92                 delete [] lookup[i];
  93                 delete [] accum[i];
  94                 delete [] preview_lookup[i];
  95         }
  96         delete engine;
  97 }
  98
  99 const char* HistogramMain::plugin_title() { return N_("Histogram"); }
 100 int HistogramMain::is_realtime() { return 1; }
 101
 102
 103
 104 NEW_WINDOW_MACRO(HistogramMain, HistogramWindow)
 105
 106 LOAD_CONFIGURATION_MACRO(HistogramMain, HistogramConfig)
 107
 108 void HistogramMain::render_gui(void *data)
 109 {
 110         if(thread)
 111         {
 112 // Process just the RGB values to determine the automatic points or
 113 // all the points if manual
 114                 if(!config.automatic)
 115                 {
 116 // Generate curves for value histogram
 117 // Lock out changes to curves
 118                         ((HistogramWindow*)thread->window)->lock_window("HistogramMain::render_gui 1");
 119                         tabulate_curve(HISTOGRAM_RED, 0);
 120                         tabulate_curve(HISTOGRAM_GREEN, 0);
 121                         tabulate_curve(HISTOGRAM_BLUE, 0);
 122                         ((HistogramWindow*)thread->window)->unlock_window();
 123                 }
 124
 125                 calculate_histogram((VFrame*)data, !config.automatic);
 126
 127
 128                 if(config.automatic)
 129                 {
 130                         calculate_automatic((VFrame*)data);
 131
 132 // Generate curves for value histogram
 133 // Lock out changes to curves
 134                         ((HistogramWindow*)thread->window)->lock_window("HistogramMain::render_gui 1");
 135                         tabulate_curve(HISTOGRAM_RED, 0);
 136                         tabulate_curve(HISTOGRAM_GREEN, 0);
 137                         tabulate_curve(HISTOGRAM_BLUE, 0);
 138                         ((HistogramWindow*)thread->window)->unlock_window();
 139
 140
 141 // Need a second pass to get the luminance values.
 142                         calculate_histogram((VFrame*)data, 1);
 143                 }
 144
 145                 ((HistogramWindow*)thread->window)->lock_window("HistogramMain::render_gui 2");
 146 // Always draw the histogram but don't update widgets if automatic
 147                 ((HistogramWindow*)thread->window)->update(1,
 148                         config.automatic && mode != HISTOGRAM_VALUE,
 149                         config.automatic && mode != HISTOGRAM_VALUE,
 150                         0);
 151
 152                 ((HistogramWindow*)thread->window)->unlock_window();
 153         }
 154 }
 155
 156 void HistogramMain::update_gui()
 157 {
 158         if(thread)
 159         {
 160                 ((HistogramWindow*)thread->window)->lock_window("HistogramMain::update_gui");
 161                 int reconfigure = load_configuration();
 162                 if(reconfigure)
 163                 {
 164                         ((HistogramWindow*)thread->window)->update(1,
 165                                 1,
 166                                 1,
 167                                 1);
 168                 }
 169                 ((HistogramWindow*)thread->window)->unlock_window();
 170         }
 171 }
 172
 173
 174
 175
 176 void HistogramMain::save_data(KeyFrame *keyframe)
 177 {
 178         FileXML output;
 179
 180 // cause data to be stored directly in text
 181         output.set_shared_output(keyframe->xbuf);
 182         output.tag.set_title("HISTOGRAM");
 183
 184         char string[BCTEXTLEN];
 185
 186         output.tag.set_property("AUTOMATIC", config.automatic);
 187         output.tag.set_property("THRESHOLD", config.threshold);
 188         output.tag.set_property("PLOT", config.plot);
 189         output.tag.set_property("SPLIT", config.split);
 190         output.tag.set_property("W", w);
 191         output.tag.set_property("H", h);
 192         output.tag.set_property("PARADE", parade);
 193         output.tag.set_property("MODE", mode);
 194
 195         for(int i = 0; i < HISTOGRAM_MODES; i++)
 196         {
 197                 sprintf(string, "LOW_OUTPUT_%d", i);
 198                 output.tag.set_property(string, config.low_output[i]);
 199                 sprintf(string, "HIGH_OUTPUT_%d", i);
 200                 output.tag.set_property(string, config.high_output[i]);
 201                 sprintf(string, "LOW_INPUT_%d", i);
 202                 output.tag.set_property(string, config.low_input[i]);
 203                 sprintf(string, "HIGH_INPUT_%d", i);
 204                 output.tag.set_property(string, config.high_input[i]);
 205                 sprintf(string, "GAMMA_%d", i);
 206                 output.tag.set_property(string, config.gamma[i]);
 207 //printf("HistogramMain::save_data %d %f %d\n", config.input_min[i], config.input_mid[i], config.input_max[i]);
 208         }
 209
 210         output.append_tag();
 211         output.tag.set_title("/HISTOGRAM");
 212         output.append_tag();
 213         output.append_newline();
 214         output.terminate_string();
 215 }
 216
 217 void HistogramMain::read_data(KeyFrame *keyframe)
 218 {
 219         FileXML input;
 220
 221         input.set_shared_input(keyframe->xbuf);
 222
 223         int result = 0;
 224
 225
 226         while(!result)
 227         {
 228                 result = input.read_tag();
 229
 230                 if(!result)
 231                 {
 232                         if(input.tag.title_is("HISTOGRAM"))
 233                         {
 234                                 config.automatic = input.tag.get_property("AUTOMATIC", config.automatic);
 235                                 config.threshold = input.tag.get_property("THRESHOLD", config.threshold);
 236                                 config.plot = input.tag.get_property("PLOT", config.plot);
 237                                 config.split = input.tag.get_property("SPLIT", config.split);
 238
 239                                 if(is_defaults())
 240                                 {
 241                                         w = input.tag.get_property("W", w);
 242                                         h = input.tag.get_property("H", h);
 243                                         parade = input.tag.get_property("PARADE", parade);
 244                                         mode = input.tag.get_property("MODE", mode);
 245                                 }
 246
 247                                 char string[BCTEXTLEN];
 248                                 for(int i = 0; i < HISTOGRAM_MODES; i++)
 249                                 {
 250                                         sprintf(string, "LOW_OUTPUT_%d", i);
 251                                         config.low_output[i] = input.tag.get_property(string, config.low_output[i]);
 252                                         sprintf(string, "HIGH_OUTPUT_%d", i);
 253                                         config.high_output[i] = input.tag.get_property(string, config.high_output[i]);
 254                                         sprintf(string, "GAMMA_%d", i);
 255                                         config.gamma[i] = input.tag.get_property(string, config.gamma[i]);
 256
 257                                         if(i == HISTOGRAM_VALUE || !config.automatic)
 258                                         {
 259                                                 sprintf(string, "LOW_INPUT_%d", i);
 260                                                 config.low_input[i] = input.tag.get_property(string, config.low_input[i]);
 261                                                 sprintf(string, "HIGH_INPUT_%d", i);
 262                                                 config.high_input[i] = input.tag.get_property(string, config.high_input[i]);
 263                                         }
 264 //printf("HistogramMain::read_data %d %f %d\n", config.input_min[i], config.input_mid[i], config.input_max[i]);
 265                                 }
 266                         }
 267                 }
 268         }
 269
 270         config.boundaries();
 271
 272 }
 273
 274 float HistogramMain::calculate_level(float input,
 275         int mode,
 276         int use_value)
 277 {
 278         float output = 0.0;
 279
 280 // Scale to input range
 281         if(!EQUIV(config.high_input[mode], config.low_input[mode]))
 282         {
 283                 output = input < config.low_input[mode] ? 0 :
 284                     (input - config.low_input[mode]) /
 285                         (config.high_input[mode] - config.low_input[mode]);
 286         }
 287         else
 288         {
 289                 output = input;
 290         }
 291
 292
 293
 294         if(!EQUIV(config.gamma[mode], 0))
 295         {
 296                 output = pow(output, 1.0 / config.gamma[mode]);
 297                 CLAMP(output, 0, 1.0);
 298         }
 299
 300 // Apply value curve
 301         if(use_value && mode != HISTOGRAM_VALUE)
 302         {
 303                 output = calculate_level(output, HISTOGRAM_VALUE, 0);
 304         }
 305
 306
 307
 308
 309 // scale to output range
 310         if(!EQUIV(config.low_output[mode], config.high_output[mode]))
 311         {
 312                 output = output * (config.high_output[mode] - config.low_output[mode]) +
 313                         config.low_output[mode];
 314         }
 315
 316         CLAMP(output, 0, 1.0);
 317
 318         return output;
 319 }
 320
 321
 322
 323 void HistogramMain::calculate_histogram(VFrame *data, int do_value)
 324 {
 325         if( !engine )
 326         {
 327                 int cpus = data->get_w() * data->get_h() / 0x80000 + 2;
 328                 int smps = get_project_smp();
 329                 if( cpus > smps ) cpus = smps;
 330                 engine = new HistogramEngine(this, cpus, cpus);
 331         }
 332         if(!accum[0])
 333         {
 334                 for(int i = 0; i < HISTOGRAM_MODES; i++)
 335                         accum[i] = new int[HISTOGRAM_SLOTS];
 336         }
 337
 338         engine->process_packages(HistogramEngine::HISTOGRAM, data, do_value);
 339
 340         for(int i = 0; i < engine->get_total_clients(); i++)
 341         {
 342                 HistogramUnit *unit = (HistogramUnit*)engine->get_client(i);
 343
 344                 if(i == 0)
 345                 {
 346                         for(int j = 0; j < HISTOGRAM_MODES; j++)
 347                         {
 348                                 memcpy(accum[j], unit->accum[j], sizeof(int) * HISTOGRAM_SLOTS);
 349                         }
 350                 }
 351                 else
 352                 {
 353                         for(int j = 0; j < HISTOGRAM_MODES; j++)
 354                         {
 355                                 int *out = accum[j];
 356                                 int *in = unit->accum[j];
 357                                 for(int k = 0; k < HISTOGRAM_SLOTS; k++)
 358                                         out[k] += in[k];
 359                         }
 360                 }
 361         }
 362
 363 // Remove top and bottom from calculations.  Doesn't work in high
 364 // precision colormodels.
 365         for(int i = 0; i < HISTOGRAM_MODES; i++)
 366         {
 367                 accum[i][0] = 0;
 368                 accum[i][HISTOGRAM_SLOTS - 1] = 0;
 369         }
 370 }
 371
 372
 373 void HistogramMain::calculate_automatic(VFrame *data)
 374 {
 375         calculate_histogram(data, 0);
 376         config.reset_points(1);
 377
 378 // Do each channel
 379         for(int i = 0; i < 3; i++)
 380         {
 381                 int *accum = this->accum[i];
 382                 int pixels = data->get_w() * data->get_h();
 383                 float white_fraction = 1.0 - (1.0 - config.threshold) / 2;
 384                 int threshold = (int)(white_fraction * pixels);
 385                 int total = 0;
 386                 float max_level = 1.0;
 387                 float min_level = 0.0;
 388
 389 // Get histogram slot above threshold of pixels
 390                 for(int j = 0; j < HISTOGRAM_SLOTS; j++)
 391                 {
 392                         total += accum[j];
 393                         if(total >= threshold)
 394                         {
 395                                 max_level = (float)j / HISTOGRAM_SLOTS * FLOAT_RANGE + HIST_MIN_INPUT;
 396                                 break;
 397                         }
 398                 }
 399
 400 // Get slot below 99% of pixels
 401                 total = 0;
 402                 for(int j = HISTOGRAM_SLOTS - 1; j >= 0; j--)
 403                 {
 404                         total += accum[j];
 405                         if(total >= threshold)
 406                         {
 407                                 min_level = (float)j / HISTOGRAM_SLOTS * FLOAT_RANGE + HIST_MIN_INPUT;
 408                                 break;
 409                         }
 410                 }
 411
 412
 413                 config.low_input[i] = min_level;
 414                 config.high_input[i] = max_level;
 415         }
 416 }
 417
 418
 419
 420
 421
 422 int HistogramMain::calculate_use_opengl()
 423 {
 424 // glHistogram doesn't work.
 425         int result = get_use_opengl() &&
 426                 !config.automatic &&
 427                 (!config.plot || !gui_open());
 428         return result;
 429 }
 430
 431
 432 int HistogramMain::process_buffer(VFrame *frame,
 433         int64_t start_position,
 434         double frame_rate)
 435 {
 436         int need_reconfigure = load_configuration();
 437
 438
 439
 440         int use_opengl = calculate_use_opengl();
 441
 442 //printf("%d\n", use_opengl);
 443         read_frame(frame,
 444                 0,
 445                 start_position,
 446                 frame_rate,
 447                 use_opengl);
 448
 449 // Apply histogram in hardware
 450         if(use_opengl) return run_opengl();
 451
 452         this->input = frame;
 453         this->output = frame;
 454         if( !engine )
 455         {
 456                 int cpus = input->get_w() * input->get_h() / 0x80000 + 2;
 457                 int smps = get_project_smp();
 458                 if( cpus > smps ) cpus = smps;
 459                 engine = new HistogramEngine(this, cpus, cpus);
 460         }
 461 // Always plot to set the curves if automatic
 462         if(config.plot || config.automatic) send_render_gui(frame);
 463
 464 // Generate tables here.  The same table is used by many packages to render
 465 // each horizontal stripe.  Need to cover the entire output range in  each
 466 // table to avoid green borders
 467
 468
 469         if(need_reconfigure ||
 470                 !lookup[0] ||
 471                 config.automatic)
 472         {
 473 // Calculate new curves
 474                 if(config.automatic)
 475                 {
 476                         calculate_automatic(input);
 477                 }
 478
 479
 480 // Generate transfer tables with value function for integer colormodels.
 481                 for(int i = 0; i < 3; i++)
 482                         tabulate_curve(i, 1);
 483         }
 484
 485 // printf("HistogramMain::process_buffer %d %f %f %f  %f %f %f  %f %f %f\n",
 486 // __LINE__,
 487 // config.low_input[HISTOGRAM_RED],
 488 // config.gamma[HISTOGRAM_RED],
 489 // config.high_input[HISTOGRAM_RED],
 490 // config.low_input[HISTOGRAM_GREEN],
 491 // config.gamma[HISTOGRAM_GREEN],
 492 // config.high_input[HISTOGRAM_GREEN],
 493 // config.low_input[HISTOGRAM_BLUE],
 494 // config.gamma[HISTOGRAM_BLUE],
 495 // config.high_input[HISTOGRAM_BLUE]);
 496
 497
 498
 499 // Apply histogram
 500         engine->process_packages(HistogramEngine::APPLY, input, 0);
 501
 502
 503         return 0;
 504 }
 505
 506 void HistogramMain::tabulate_curve(int subscript, int use_value)
 507 {
 508         int i;
 509         if(!lookup[subscript])
 510                 lookup[subscript] = new int[HISTOGRAM_SLOTS];
 511         if(!preview_lookup[subscript])
 512                 preview_lookup[subscript] = new int[HISTOGRAM_SLOTS];
 513
 514 //printf("HistogramMain::tabulate_curve %d input=%p\n", __LINE__, input);
 515
 516
 517 // Generate lookup tables for integer colormodels
 518         if(input)
 519         {
 520                 switch(input->get_color_model())
 521                 {
 522                         case BC_RGB888:
 523                         case BC_RGBA8888:
 524                                 for(i = 0; i < 0x100; i++)
 525                                 {
 526                                         lookup[subscript][i] =
 527                                                 (int)(calculate_level((float)i / 0xff, subscript, use_value) *
 528                                                 0xff);
 529                                         CLAMP(lookup[subscript][i], 0, 0xff);
 530                                 }
 531                                 break;
 532 // All other integer colormodels are converted to 16 bit RGB
 533                         default:
 534                                 for(i = 0; i < 0x10000; i++)
 535                                 {
 536                                         lookup[subscript][i] =
 537                                                 (int)(calculate_level((float)i / 0xffff, subscript, use_value) *
 538                                                 0xffff);
 539                                         CLAMP(lookup[subscript][i], 0, 0xffff);
 540                                 }
 541 // for(i = 0; i < 0x100; i++)
 542 // {
 543 // if(subscript == HISTOGRAM_BLUE) printf("%d ", lookup[subscript][i * 0x100]);
 544 // }
 545 // if(subscript == HISTOGRAM_BLUE) printf("\n");
 546
 547                                 break;
 548                 }
 549         }
 550
 551 // Lookup table for preview only used for GUI
 552         if(!use_value)
 553         {
 554                 for(i = 0; i < 0x10000; i++)
 555                 {
 556                         preview_lookup[subscript][i] =
 557                                 (int)(calculate_level((float)i / 0xffff, subscript, use_value) *
 558                                 0xffff);
 559                         CLAMP(preview_lookup[subscript][i], 0, 0xffff);
 560                 }
 561         }
 562 }
 563
 564 int HistogramMain::handle_opengl()
 565 {
 566 #ifdef HAVE_GL
 567 // Functions to get pixel from either previous effect or texture
 568         static const char *histogram_get_pixel1 =
 569                 "vec4 histogram_get_pixel()\n"
 570                 "{\n"
 571                 "       return gl_FragColor;\n"
 572                 "}\n";
 573
 574         static const char *histogram_get_pixel2 =
 575                 "uniform sampler2D tex;\n"
 576                 "vec4 histogram_get_pixel()\n"
 577                 "{\n"
 578                 "       return texture2D(tex, gl_TexCoord[0].st);\n"
 579                 "}\n";
 580
 581         static const char *head_frag =
 582                 "uniform vec4 low_input;\n"
 583                 "uniform vec4 high_input;\n"
 584                 "uniform vec4 gamma;\n"
 585                 "uniform vec4 low_output;\n"
 586                 "uniform vec4 output_scale;\n"
 587                 "void main()\n"
 588                 "{\n"
 589                 "       float temp = 0.0;\n";
 590
 591         static const char *get_rgb_frag =
 592                 "       vec4 pixel = histogram_get_pixel();\n";
 593
 594         static const char *get_yuv_frag =
 595                 "       vec4 pixel = histogram_get_pixel();\n"
 596                         YUV_TO_RGB_FRAG("pixel");
 597
 598 #define APPLY_INPUT_CURVE(PIXEL, LOW_INPUT, HIGH_INPUT, GAMMA) \
 599                 "// apply input curve\n" \
 600                 "       temp = (" PIXEL " - " LOW_INPUT ") / \n" \
 601                 "               (" HIGH_INPUT " - " LOW_INPUT ");\n" \
 602                 "       temp = max(temp, 0.0);\n" \
 603                 "       " PIXEL " = pow(temp, 1.0 / " GAMMA ");\n"
 604
 605
 606
 607         static const char *apply_histogram_frag =
 608                 APPLY_INPUT_CURVE("pixel.r", "low_input.r", "high_input.r", "gamma.r")
 609                 APPLY_INPUT_CURVE("pixel.g", "low_input.g", "high_input.g", "gamma.g")
 610                 APPLY_INPUT_CURVE("pixel.b", "low_input.b", "high_input.b", "gamma.b")
 611                 "// apply output curve\n"
 612                 "       pixel.rgb *= output_scale.rgb;\n"
 613                 "       pixel.rgb += low_output.rgb;\n"
 614                 APPLY_INPUT_CURVE("pixel.r", "low_input.a", "high_input.a", "gamma.a")
 615                 APPLY_INPUT_CURVE("pixel.g", "low_input.a", "high_input.a", "gamma.a")
 616                 APPLY_INPUT_CURVE("pixel.b", "low_input.a", "high_input.a", "gamma.a")
 617                 "// apply output curve\n"
 618                 "       pixel.rgb *= vec3(output_scale.a, output_scale.a, output_scale.a);\n"
 619                 "       pixel.rgb += vec3(low_output.a, low_output.a, low_output.a);\n";
 620
 621         static const char *put_rgb_frag =
 622                 "       gl_FragColor = pixel;\n"
 623                 "}\n";
 624
 625         static const char *put_yuv_frag =
 626                         RGB_TO_YUV_FRAG("pixel")
 627                 "       gl_FragColor = pixel;\n"
 628                 "}\n";
 629
 630
 631
 632         get_output()->to_texture();
 633         get_output()->enable_opengl();
 634
 635         const char *shader_stack[16];
 636         memset(shader_stack,0, sizeof(shader_stack));
 637         int current_shader = 0;
 638
 639         int need_color_matrix = BC_CModels::is_yuv(get_output()->get_color_model()) ? 1 : 0;
 640         if( need_color_matrix )
 641                 shader_stack[current_shader++] = bc_gl_colors;
 642
 643         int aggregate_interpolation = 0;
 644         int aggregate_gamma = 0;
 645         int aggregate_colorbalance = 0;
 646 // All aggregation possibilities must be accounted for because unsupported
 647 // effects can get in between the aggregation members.
 648         if(!strcmp(get_output()->get_prev_effect(2), _("Interpolate Pixels")) &&
 649                 !strcmp(get_output()->get_prev_effect(1), _("Gamma")) &&
 650                 !strcmp(get_output()->get_prev_effect(0), _("Color Balance")))
 651         {
 652                 aggregate_interpolation = 1;
 653                 aggregate_gamma = 1;
 654                 aggregate_colorbalance = 1;
 655         }
 656         else
 657         if(!strcmp(get_output()->get_prev_effect(1), _("Gamma")) &&
 658                 !strcmp(get_output()->get_prev_effect(0), _("Color Balance")))
 659         {
 660                 aggregate_gamma = 1;
 661                 aggregate_colorbalance = 1;
 662         }
 663         else
 664         if(!strcmp(get_output()->get_prev_effect(1), _("Interpolate Pixels")) &&
 665                 !strcmp(get_output()->get_prev_effect(0), _("Gamma")))
 666         {
 667                 aggregate_interpolation = 1;
 668                 aggregate_gamma = 1;
 669         }
 670         else
 671         if(!strcmp(get_output()->get_prev_effect(1), _("Interpolate Pixels")) &&
 672                 !strcmp(get_output()->get_prev_effect(0), _("Color Balance")))
 673         {
 674                 aggregate_interpolation = 1;
 675                 aggregate_colorbalance = 1;
 676         }
 677         else
 678         if(!strcmp(get_output()->get_prev_effect(0), _("Interpolate Pixels")))
 679                 aggregate_interpolation = 1;
 680         else
 681         if(!strcmp(get_output()->get_prev_effect(0), _("Gamma")))
 682                 aggregate_gamma = 1;
 683         else
 684         if(!strcmp(get_output()->get_prev_effect(0), _("Color Balance")))
 685                 aggregate_colorbalance = 1;
 686
 687 // The order of processing is fixed by this sequence
 688         if(aggregate_interpolation)
 689                 INTERPOLATE_COMPILE(shader_stack, current_shader);
 690
 691         if(aggregate_gamma)
 692                 GAMMA_COMPILE(shader_stack, current_shader,
 693                         aggregate_interpolation);
 694
 695         if(aggregate_colorbalance)
 696                 COLORBALANCE_COMPILE(shader_stack, current_shader,
 697                         aggregate_interpolation || aggregate_gamma);
 698
 699         shader_stack[current_shader++] =
 700                 aggregate_interpolation || aggregate_gamma || aggregate_colorbalance ?
 701                         histogram_get_pixel1 : histogram_get_pixel2;
 702
 703         shader_stack[current_shader++] = head_frag;
 704         shader_stack[current_shader++] = BC_CModels::is_yuv(get_output()->get_color_model()) ?
 705                         get_yuv_frag : get_rgb_frag;
 706         shader_stack[current_shader++] = apply_histogram_frag;
 707         shader_stack[current_shader++] = BC_CModels::is_yuv(get_output()->get_color_model()) ?
 708                         put_yuv_frag : put_rgb_frag;
 709
 710         shader_stack[current_shader] = 0;
 711         unsigned int shader = VFrame::make_shader(shader_stack);
 712
 713 // printf("HistogramMain::handle_opengl %d %d %d %d shader=%d\n",
 714 // aggregate_interpolation,
 715 // aggregate_gamma,
 716 // aggregate_colorbalance,
 717 // current_shader,
 718 // shader);
 719
 720         float low_input[4];
 721         float high_input[4];
 722         float gamma[4];
 723         float low_output[4];
 724         float output_scale[4];
 725
 726
 727 // printf("min x    min y    max x    max y\n");
 728 // printf("%f %f %f %f\n", input_min_r[0], input_min_r[1], input_max_r[0], input_max_r[1]);
 729 // printf("%f %f %f %f\n", input_min_g[0], input_min_g[1], input_max_g[0], input_max_g[1]);
 730 // printf("%f %f %f %f\n", input_min_b[0], input_min_b[1], input_max_b[0], input_max_b[1]);
 731 // printf("%f %f %f %f\n", input_min_v[0], input_min_v[1], input_max_v[0], input_max_v[1]);
 732
 733         for(int i = 0; i < HISTOGRAM_MODES; i++)
 734         {
 735                 low_input[i] = config.low_input[i];
 736                 high_input[i] = config.high_input[i];
 737                 gamma[i] = config.gamma[i];
 738                 low_output[i] = config.low_output[i];
 739                 output_scale[i] = config.high_output[i] - config.low_output[i];
 740         }
 741
 742         if(shader > 0)
 743         {
 744                 glUseProgram(shader);
 745                 glUniform1i(glGetUniformLocation(shader, "tex"), 0);
 746                 if(aggregate_gamma) GAMMA_UNIFORMS(shader);
 747                 if(aggregate_interpolation) INTERPOLATE_UNIFORMS(shader);
 748                 if(aggregate_colorbalance) COLORBALANCE_UNIFORMS(shader);
 749                 glUniform4fv(glGetUniformLocation(shader, "low_input"), 1, low_input);
 750                 glUniform4fv(glGetUniformLocation(shader, "high_input"), 1, high_input);
 751                 glUniform4fv(glGetUniformLocation(shader, "gamma"), 1, gamma);
 752                 glUniform4fv(glGetUniformLocation(shader, "low_output"), 1, low_output);
 753                 glUniform4fv(glGetUniformLocation(shader, "output_scale"), 1, output_scale);
 754                 if( need_color_matrix ) BC_GL_COLORS(shader);
 755         }
 756
 757         get_output()->init_screen();
 758         get_output()->bind_texture(0);
 759
 760         glDisable(GL_BLEND);
 761
 762 // Draw the affected half
 763         if(config.split)
 764         {
 765                 glBegin(GL_TRIANGLES);
 766                 glNormal3f(0, 0, 1.0);
 767
 768                 glTexCoord2f(0.0 / get_output()->get_texture_w(),
 769                         0.0 / get_output()->get_texture_h());
 770                 glVertex3f(0.0, -(float)get_output()->get_h(), 0);
 771
 772
 773                 glTexCoord2f((float)get_output()->get_w() / get_output()->get_texture_w(),
 774                         (float)get_output()->get_h() / get_output()->get_texture_h());
 775                 glVertex3f((float)get_output()->get_w(), -0.0, 0);
 776
 777                 glTexCoord2f(0.0 / get_output()->get_texture_w(),
 778                         (float)get_output()->get_h() / get_output()->get_texture_h());
 779                 glVertex3f(0.0, -0.0, 0);
 780
 781
 782                 glEnd();
 783         }
 784         else
 785         {
 786                 get_output()->draw_texture();
 787         }
 788
 789         glUseProgram(0);
 790
 791 // Draw the unaffected half
 792         if(config.split)
 793         {
 794                 glBegin(GL_TRIANGLES);
 795                 glNormal3f(0, 0, 1.0);
 796
 797
 798                 glTexCoord2f(0.0 / get_output()->get_texture_w(),
 799                         0.0 / get_output()->get_texture_h());
 800                 glVertex3f(0.0, -(float)get_output()->get_h(), 0);
 801
 802                 glTexCoord2f((float)get_output()->get_w() / get_output()->get_texture_w(),
 803                         0.0 / get_output()->get_texture_h());
 804                 glVertex3f((float)get_output()->get_w(),
 805                         -(float)get_output()->get_h(), 0);
 806
 807                 glTexCoord2f((float)get_output()->get_w() / get_output()->get_texture_w(),
 808                         (float)get_output()->get_h() / get_output()->get_texture_h());
 809                 glVertex3f((float)get_output()->get_w(), -0.0, 0);
 810
 811
 812                 glEnd();
 813         }
 814
 815         get_output()->set_opengl_state(VFrame::SCREEN);
 816 #endif
 817         return 0;
 818 }
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831 HistogramPackage::HistogramPackage()
 832  : LoadPackage()
 833 {
 834 }
 835
 836
 837
 838
 839 HistogramUnit::HistogramUnit(HistogramEngine *server,
 840         HistogramMain *plugin)
 841  : LoadClient(server)
 842 {
 843         this->plugin = plugin;
 844         this->server = server;
 845         for(int i = 0; i < HISTOGRAM_MODES; i++)
 846                 accum[i] = new int[HISTOGRAM_SLOTS];
 847 }
 848
 849 HistogramUnit::~HistogramUnit()
 850 {
 851         for(int i = 0; i < HISTOGRAM_MODES; i++)
 852                 delete [] accum[i];
 853 }
 854
 855 void HistogramUnit::process_package(LoadPackage *package)
 856 {
 857         HistogramPackage *pkg = (HistogramPackage*)package;
 858
 859         if(server->operation == HistogramEngine::HISTOGRAM)
 860         {
 861                 int do_value = server->do_value;
 862
 863
 864 #define HISTOGRAM_HEAD(type) \
 865 { \
 866         for(int i = pkg->start; i < pkg->end; i++) \
 867         { \
 868                 type *row = (type*)data->get_rows()[i]; \
 869                 for(int j = 0; j < w; j++) \
 870                 {
 871
 872 #define HISTOGRAM_TAIL(components) \
 873 /* Value takes the maximum of the output RGB values */ \
 874                         if(do_value) \
 875                         { \
 876                                 CLAMP(r, 0, HISTOGRAM_SLOTS - 1); \
 877                                 CLAMP(g, 0, HISTOGRAM_SLOTS - 1); \
 878                                 CLAMP(b, 0, HISTOGRAM_SLOTS - 1); \
 879                                 r_out = lookup_r[r]; \
 880                                 g_out = lookup_g[g]; \
 881                                 b_out = lookup_b[b]; \
 882 /*                              v = (r * 76 + g * 150 + b * 29) >> 8; */ \
 883                                 v = MAX(r_out, g_out); \
 884                                 v = MAX(v, b_out); \
 885                                 v += -HISTOGRAM_MIN * 0xffff / 100; \
 886                                 CLAMP(v, 0, HISTOGRAM_SLOTS - 1); \
 887                                 accum_v[v]++; \
 888                         } \
 889  \
 890                         r += -HISTOGRAM_MIN * 0xffff / 100; \
 891                         g += -HISTOGRAM_MIN * 0xffff / 100; \
 892                         b += -HISTOGRAM_MIN * 0xffff / 100; \
 893                         CLAMP(r, 0, HISTOGRAM_SLOTS - 1); \
 894                         CLAMP(g, 0, HISTOGRAM_SLOTS - 1); \
 895                         CLAMP(b, 0, HISTOGRAM_SLOTS - 1); \
 896                         accum_r[r]++; \
 897                         accum_g[g]++; \
 898                         accum_b[b]++; \
 899                         row += components; \
 900                 } \
 901         } \
 902 }
 903
 904
 905
 906
 907                 VFrame *data = server->data;
 908                 int w = data->get_w();
 909                 //int h = data->get_h();
 910                 int *accum_r = accum[HISTOGRAM_RED];
 911                 int *accum_g = accum[HISTOGRAM_GREEN];
 912                 int *accum_b = accum[HISTOGRAM_BLUE];
 913                 int *accum_v = accum[HISTOGRAM_VALUE];
 914                 int32_t r, g, b, y, u, v;
 915                 int r_out, g_out, b_out;
 916                 int *lookup_r = plugin->preview_lookup[HISTOGRAM_RED];
 917                 int *lookup_g = plugin->preview_lookup[HISTOGRAM_GREEN];
 918                 int *lookup_b = plugin->preview_lookup[HISTOGRAM_BLUE];
 919
 920                 switch(data->get_color_model())
 921                 {
 922                         case BC_RGB888:
 923                                 HISTOGRAM_HEAD(unsigned char)
 924                                 r = (row[0] << 8) | row[0];
 925                                 g = (row[1] << 8) | row[1];
 926                                 b = (row[2] << 8) | row[2];
 927                                 HISTOGRAM_TAIL(3)
 928                                 break;
 929                         case BC_RGB_FLOAT:
 930                                 HISTOGRAM_HEAD(float)
 931                                 r = (int)(row[0] * 0xffff);
 932                                 g = (int)(row[1] * 0xffff);
 933                                 b = (int)(row[2] * 0xffff);
 934                                 HISTOGRAM_TAIL(3)
 935                                 break;
 936                         case BC_YUV888:
 937                                 HISTOGRAM_HEAD(unsigned char)
 938                                 y = (row[0] << 8) | row[0];
 939                                 u = (row[1] << 8) | row[1];
 940                                 v = (row[2] << 8) | row[2];
 941                                 YUV::yuv.yuv_to_rgb_16(r, g, b, y, u, v);
 942                                 HISTOGRAM_TAIL(3)
 943                                 break;
 944                         case BC_RGBA8888:
 945                                 HISTOGRAM_HEAD(unsigned char)
 946                                 r = (row[0] << 8) | row[0];
 947                                 g = (row[1] << 8) | row[1];
 948                                 b = (row[2] << 8) | row[2];
 949                                 HISTOGRAM_TAIL(4)
 950                                 break;
 951                         case BC_RGBA_FLOAT:
 952                                 HISTOGRAM_HEAD(float)
 953                                 r = (int)(row[0] * 0xffff);
 954                                 g = (int)(row[1] * 0xffff);
 955                                 b = (int)(row[2] * 0xffff);
 956                                 HISTOGRAM_TAIL(4)
 957                                 break;
 958                         case BC_YUVA8888:
 959                                 HISTOGRAM_HEAD(unsigned char)
 960                                 y = (row[0] << 8) | row[0];
 961                                 u = (row[1] << 8) | row[1];
 962                                 v = (row[2] << 8) | row[2];
 963                                 YUV::yuv.yuv_to_rgb_16(r, g, b, y, u, v);
 964                                 HISTOGRAM_TAIL(4)
 965                                 break;
 966                         case BC_RGB161616:
 967                                 HISTOGRAM_HEAD(uint16_t)
 968                                 r = row[0];
 969                                 g = row[1];
 970                                 b = row[2];
 971                                 HISTOGRAM_TAIL(3)
 972                                 break;
 973                         case BC_YUV161616:
 974                                 HISTOGRAM_HEAD(uint16_t)
 975                                 y = row[0];
 976                                 u = row[1];
 977                                 v = row[2];
 978                                 YUV::yuv.yuv_to_rgb_16(r, g, b, y, u, v);
 979                                 HISTOGRAM_TAIL(3)
 980                                 break;
 981                         case BC_RGBA16161616:
 982                                 HISTOGRAM_HEAD(uint16_t)
 983                                 r = row[0];
 984                                 g = row[1];
 985                                 b = row[2];
 986                                 HISTOGRAM_TAIL(3)
 987                                 break;
 988                         case BC_YUVA16161616:
 989                                 HISTOGRAM_HEAD(uint16_t)
 990                                 y = row[0];
 991                                 u = row[1];
 992                                 v = row[2];
 993                                 YUV::yuv.yuv_to_rgb_16(r, g, b, y, u, v);
 994                                 HISTOGRAM_TAIL(4)
 995                                 break;
 996                 }
 997         }
 998         else
 999         if(server->operation == HistogramEngine::APPLY)
1000         {
1001
1002
1003
1004 #define PROCESS(type, components) \
1005 { \
1006         for(int i = pkg->start; i < pkg->end; i++) \
1007         { \
1008                 type *row = (type*)input->get_rows()[i]; \
1009                 for(int j = 0; j < w; j++) \
1010                 { \
1011                         if ( plugin->config.split && ((j + i * w / h) < w) ) \
1012                         continue; \
1013                         row[0] = lookup_r[row[0]]; \
1014                         row[1] = lookup_g[row[1]]; \
1015                         row[2] = lookup_b[row[2]]; \
1016                         row += components; \
1017                 } \
1018         } \
1019 }
1020
1021 #define PROCESS_YUV(type, components, max) \
1022 { \
1023         for(int i = pkg->start; i < pkg->end; i++) \
1024         { \
1025                 type *row = (type*)input->get_rows()[i]; \
1026                 for(int j = 0; j < w; j++) \
1027                 { \
1028                         if ( plugin->config.split && ((j + i * w / h) < w) ) \
1029                         continue; \
1030 /* Convert to 16 bit RGB */ \
1031                         if(max == 0xff) \
1032                         { \
1033                                 y = (row[0] << 8) | row[0]; \
1034                                 u = (row[1] << 8) | row[1]; \
1035                                 v = (row[2] << 8) | row[2]; \
1036                         } \
1037                         else \
1038                         { \
1039                                 y = row[0]; \
1040                                 u = row[1]; \
1041                                 v = row[2]; \
1042                         } \
1043  \
1044                         YUV::yuv.yuv_to_rgb_16(r, g, b, y, u, v); \
1045  \
1046 /* Look up in RGB domain */ \
1047                         r = lookup_r[r]; \
1048                         g = lookup_g[g]; \
1049                         b = lookup_b[b]; \
1050  \
1051 /* Convert to 16 bit YUV */ \
1052                         YUV::yuv.rgb_to_yuv_16(r, g, b, y, u, v); \
1053  \
1054                         if(max == 0xff) \
1055                         { \
1056                                 row[0] = y >> 8; \
1057                                 row[1] = u >> 8; \
1058                                 row[2] = v >> 8; \
1059                         } \
1060                         else \
1061                         { \
1062                                 row[0] = y; \
1063                                 row[1] = u; \
1064                                 row[2] = v; \
1065                         } \
1066                         row += components; \
1067                 } \
1068         } \
1069 }
1070
1071 #define PROCESS_FLOAT(components) \
1072 { \
1073         for(int i = pkg->start; i < pkg->end; i++) \
1074         { \
1075                 float *row = (float*)input->get_rows()[i]; \
1076                 for(int j = 0; j < w; j++) \
1077                 { \
1078                         if ( plugin->config.split && ((j + i * w / h) < w) ) \
1079                         continue; \
1080                         float r = row[0]; \
1081                         float g = row[1]; \
1082                         float b = row[2]; \
1083  \
1084                         r = plugin->calculate_level(r, HISTOGRAM_RED, 1); \
1085                         g = plugin->calculate_level(g, HISTOGRAM_GREEN, 1); \
1086                         b = plugin->calculate_level(b, HISTOGRAM_BLUE, 1); \
1087  \
1088                         row[0] = r; \
1089                         row[1] = g; \
1090                         row[2] = b; \
1091  \
1092                         row += components; \
1093                 } \
1094         } \
1095 }
1096
1097
1098                 VFrame *input = plugin->input;
1099                 //VFrame *output = plugin->output;
1100                 int w = input->get_w();
1101                 int h = input->get_h();
1102                 int *lookup_r = plugin->lookup[0];
1103                 int *lookup_g = plugin->lookup[1];
1104                 int *lookup_b = plugin->lookup[2];
1105                 int r, g, b, y, u, v;
1106                 switch(input->get_color_model())
1107                 {
1108                         case BC_RGB888:
1109                                 PROCESS(unsigned char, 3)
1110                                 break;
1111                         case BC_RGB_FLOAT:
1112                                 PROCESS_FLOAT(3);
1113                                 break;
1114                         case BC_RGBA8888:
1115                                 PROCESS(unsigned char, 4)
1116                                 break;
1117                         case BC_RGBA_FLOAT:
1118                                 PROCESS_FLOAT(4);
1119                                 break;
1120                         case BC_RGB161616:
1121                                 PROCESS(uint16_t, 3)
1122                                 break;
1123                         case BC_RGBA16161616:
1124                                 PROCESS(uint16_t, 4)
1125                                 break;
1126                         case BC_YUV888:
1127                                 PROCESS_YUV(unsigned char, 3, 0xff)
1128                                 break;
1129                         case BC_YUVA8888:
1130                                 PROCESS_YUV(unsigned char, 4, 0xff)
1131                                 break;
1132                         case BC_YUV161616:
1133                                 PROCESS_YUV(uint16_t, 3, 0xffff)
1134                                 break;
1135                         case BC_YUVA16161616:
1136                                 PROCESS_YUV(uint16_t, 4, 0xffff)
1137                                 break;
1138                 }
1139         }
1140 }
1141
1142
1143
1144
1145
1146
1147 HistogramEngine::HistogramEngine(HistogramMain *plugin,
1148         int total_clients,
1149         int total_packages)
1150  : LoadServer(total_clients, total_packages)
1151 {
1152         this->plugin = plugin;
1153 }
1154
1155 void HistogramEngine::init_packages()
1156 {
1157         switch(operation)
1158         {
1159                 case HISTOGRAM:
1160                         total_size = data->get_h();
1161                         break;
1162                 case APPLY:
1163                         total_size = data->get_h();
1164                         break;
1165         }
1166
1167
1168         //int package_size = (int)((float)total_size / get_total_packages() + 1);
1169         //int start = 0;
1170
1171         for(int i = 0; i < get_total_packages(); i++)
1172         {
1173                 HistogramPackage *package = (HistogramPackage*)get_package(i);
1174                 package->start = total_size * i / get_total_packages();
1175                 package->end = total_size * (i + 1) / get_total_packages();
1176         }
1177
1178 // Initialize clients here in case some don't get run.
1179         for(int i = 0; i < get_total_clients(); i++)
1180         {
1181                 HistogramUnit *unit = (HistogramUnit*)get_client(i);
1182                 for(int i = 0; i < HISTOGRAM_MODES; i++)
1183                         bzero(unit->accum[i], sizeof(int) * HISTOGRAM_SLOTS);
1184         }
1185
1186 }
1187
1188 LoadClient* HistogramEngine::new_client()
1189 {
1190         return new HistogramUnit(this, plugin);
1191 }
1192
1193 LoadPackage* HistogramEngine::new_package()
1194 {
1195         return new HistogramPackage;
1196 }
1197
1198 void HistogramEngine::process_packages(int operation, VFrame *data, int do_value)
1199 {
1200         this->data = data;
1201         this->operation = operation;
1202         this->do_value = do_value;
1203         LoadServer::process_packages();
1204 }
1205
1206