cinelerra-5.1/cinelerra/playback3d.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009 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 #define GL_GLEXT_PROTOTYPES
  23
  24 #include "bccolors.h"
  25 #include "bcsignals.h"
  26 #include "bcwindowbase.h"
  27 #include "canvas.h"
  28 #include "clip.h"
  29 #include "condition.h"
  30 #include "edl.h"
  31 #include "maskautos.h"
  32 #include "maskauto.h"
  33 #include "mutex.h"
  34 #include "mwindow.h"
  35 #include "overlayframe.inc"
  36 #include "overlayframe.h"
  37 #include "playback3d.h"
  38 #include "pluginclient.h"
  39 #include "pluginvclient.h"
  40 #include "edlsession.h"
  41 #include "transportque.inc"
  42 #include "vframe.h"
  43
  44 #ifdef HAVE_GL
  45 #include <GL/gl.h>
  46 #include <GL/glext.h>
  47 #include <GL/glu.h>
  48 #endif
  49
  50 #include <string.h>
  51 #include <unistd.h>
  52 #include <fcntl.h>
  53
  54 #define QQ(q)#q
  55 #define SS(s)QQ(s)
  56
  57
  58 // Shaders
  59 // These should be passed to VFrame::make_shader to construct shaders.
  60 // Can't hard code sampler2D
  61
  62
  63 #ifdef HAVE_GL
  64 static const char *yuv_to_rgb_frag =
  65         "uniform sampler2D tex;\n"
  66         "uniform mat3 yuv_to_rgb_matrix;\n"
  67         "uniform float yminf;\n"
  68         "void main()\n"
  69         "{\n"
  70         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  71         "       yuva.rgb -= vec3(yminf, 0.5, 0.5);\n"
  72         "       gl_FragColor = vec4(yuv_to_rgb_matrix * yuva.rgb, yuva.a);\n"
  73         "}\n";
  74
  75 static const char *yuva_to_yuv_frag =
  76         "uniform sampler2D tex;\n"
  77         "void main()\n"
  78         "{\n"
  79         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  80         "       float a = yuva.a;\n"
  81         "       float anti_a = 1.0 - a;\n"
  82         "       yuva.r *= a;\n"
  83         "       yuva.g = yuva.g * a + 0.5 * anti_a;\n"
  84         "       yuva.b = yuva.b * a + 0.5 * anti_a;\n"
  85         "       yuva.a = 1.0;\n"
  86         "       gl_FragColor = yuva;\n"
  87         "}\n";
  88
  89 static const char *yuva_to_rgb_frag =
  90         "uniform sampler2D tex;\n"
  91         "uniform mat3 yuv_to_rgb_matrix;\n"
  92         "uniform float yminf;\n"
  93         "void main()\n"
  94         "{\n"
  95         "       vec4 yuva = texture2D(tex, gl_TexCoord[0].st);\n"
  96         "       yuva.rgb -= vec3(yminf, 0.5, 0.5);\n"
  97         "       yuva.rgb = yuv_to_rgb_matrix * yuva.rgb;\n"
  98         "       yuva.rgb *= yuva.a;\n"
  99         "       yuva.a = 1.0;\n"
 100         "       gl_FragColor = yuva;\n"
 101         "}\n";
 102
 103 static const char *rgb_to_yuv_frag =
 104         "uniform sampler2D tex;\n"
 105         "uniform mat3 rgb_to_yuv_matrix;\n"
 106         "uniform float yminf;\n"
 107         "void main()\n"
 108         "{\n"
 109         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 110         "       rgba.rgb = rgb_to_yuv_matrix * rgba.rgb;\n"
 111         "       rgba.rgb += vec3(yminf, 0.5, 0.5);\n"
 112         "       gl_FragColor = rgba;\n"
 113         "}\n";
 114
 115
 116 static const char *rgba_to_rgb_frag =
 117         "uniform sampler2D tex;\n"
 118         "void main()\n"
 119         "{\n"
 120         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 121         "       rgba.rgb *= rgba.a;\n"
 122         "       rgba.a = 1.0;\n"
 123         "       gl_FragColor = rgba;\n"
 124         "}\n";
 125
 126 static const char *rgba_to_yuv_frag =
 127         "uniform sampler2D tex;\n"
 128         "uniform mat3 rgb_to_yuv_matrix;\n"
 129         "uniform float yminf;\n"
 130         "void main()\n"
 131         "{\n"
 132         "       vec4 rgba = texture2D(tex, gl_TexCoord[0].st);\n"
 133         "       rgba.rgb *= rgba.a;\n"
 134         "       rgba.a = 1.0;\n"
 135         "       rgba.rgb = rgb_to_yuv_matrix * rgba.rgb;\n"
 136         "       rgba.rgb += vec3(yminf, 0.5, 0.5);\n"
 137         "       gl_FragColor = rgba;\n"
 138         "}\n";
 139
 140 //static const char *rgba_to_rgb_flatten =
 141 //      "void main() {\n"
 142 //      "       gl_FragColor.rgb *= gl_FragColor.a;\n"
 143 //      "       gl_FragColor.a = 1.0;\n"
 144 //      "}\n";
 145
 146 #define GL_STD_BLEND(FN) \
 147 static const char *blend_##FN##_frag = \
 148         "uniform sampler2D tex2;\n" \
 149         "uniform vec2 tex2_dimensions;\n" \
 150         "uniform float alpha;\n" \
 151         "void main() {\n" \
 152         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n" \
 153         "       vec4 result;\n" \
 154         "       result.rgb = " SS(COLOR_##FN(1.0, gl_FragColor.rgb, gl_FragColor.a, canvas.rgb, canvas.a)) ";\n" \
 155         "       result.a = " SS(ALPHA_##FN(1.0, gl_FragColor.a, canvas.a)) ";\n" \
 156         "       gl_FragColor = mix(canvas, result, alpha);\n" \
 157         "}\n"
 158
 159 #define GL_VEC_BLEND(FN) \
 160 static const char *blend_##FN##_frag = \
 161         "uniform sampler2D tex2;\n" \
 162         "uniform vec2 tex2_dimensions;\n" \
 163         "uniform float alpha;\n" \
 164         "void main() {\n" \
 165         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n" \
 166         "       vec4 result;\n" \
 167         "       result.r = " SS(COLOR_##FN(1.0, gl_FragColor.r, gl_FragColor.a, canvas.r, canvas.a)) ";\n" \
 168         "       result.g = " SS(COLOR_##FN(1.0, gl_FragColor.g, gl_FragColor.a, canvas.g, canvas.a)) ";\n" \
 169         "       result.b = " SS(COLOR_##FN(1.0, gl_FragColor.b, gl_FragColor.a, canvas.b, canvas.a)) ";\n" \
 170         "       result.a = " SS(ALPHA_##FN(1.0, gl_FragColor.a, canvas.a)) ";\n" \
 171         "       result = clamp(result, 0.0, 1.0);\n" \
 172         "       gl_FragColor = mix(canvas, result, alpha);\n" \
 173         "}\n"
 174
 175 #undef mabs
 176 #define mabs abs
 177 #undef mmin
 178 #define mmin min
 179 #undef mmax
 180 #define mmax max
 181
 182 #undef ZERO
 183 #define ZERO 0.0
 184 #undef ONE
 185 #define ONE 1.0
 186 #undef TWO
 187 #define TWO 2.0
 188
 189 // NORMAL
 190 static const char *blend_NORMAL_frag =
 191         "uniform sampler2D tex2;\n"
 192         "uniform vec2 tex2_dimensions;\n"
 193         "uniform float alpha;\n"
 194         "void main() {\n"
 195         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 196         "       vec4 result = mix(canvas, gl_FragColor, gl_FragColor.a);\n"
 197         "       gl_FragColor = mix(canvas, result, alpha);\n"
 198         "}\n";
 199
 200 // REPLACE
 201 static const char *blend_REPLACE_frag =
 202         "uniform float alpha;\n"
 203         "void main() {\n"
 204         "}\n";
 205
 206 // ADDITION
 207 static const char *blend_ADDITION_frag =
 208         "uniform sampler2D tex2;\n"
 209         "uniform vec2 tex2_dimensions;\n"
 210         "uniform float alpha;\n"
 211         "void main() {\n"
 212         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 213         "       vec4 result = clamp(gl_FragColor + canvas, 0.0, 1.0);\n"
 214         "       gl_FragColor = mix(canvas, result, alpha);\n"
 215         "}\n";
 216
 217 // SUBTRACT
 218 static const char *blend_SUBTRACT_frag =
 219         "uniform sampler2D tex2;\n"
 220         "uniform vec2 tex2_dimensions;\n"
 221         "uniform float alpha;\n"
 222         "void main() {\n"
 223         "       vec4 canvas = texture2D(tex2, gl_FragCoord.xy / tex2_dimensions);\n"
 224         "       vec4 result = clamp(gl_FragColor - canvas, 0.0, 1.0);\n"
 225         "       gl_FragColor = mix(canvas, result, alpha);\n"
 226         "}\n";
 227
 228 GL_STD_BLEND(MULTIPLY);
 229 GL_VEC_BLEND(DIVIDE);
 230 GL_VEC_BLEND(MAX);
 231 GL_VEC_BLEND(MIN);
 232 GL_VEC_BLEND(DARKEN);
 233 GL_VEC_BLEND(LIGHTEN);
 234 GL_STD_BLEND(DST);
 235 GL_STD_BLEND(DST_ATOP);
 236 GL_STD_BLEND(DST_IN);
 237 GL_STD_BLEND(DST_OUT);
 238 GL_STD_BLEND(DST_OVER);
 239 GL_STD_BLEND(SRC);
 240 GL_STD_BLEND(SRC_ATOP);
 241 GL_STD_BLEND(SRC_IN);
 242 GL_STD_BLEND(SRC_OUT);
 243 GL_STD_BLEND(SRC_OVER);
 244 GL_STD_BLEND(AND);
 245 GL_STD_BLEND(OR);
 246 GL_STD_BLEND(XOR);
 247 GL_VEC_BLEND(OVERLAY);
 248 GL_STD_BLEND(SCREEN);
 249 GL_VEC_BLEND(BURN);
 250 GL_VEC_BLEND(DODGE);
 251 GL_VEC_BLEND(HARDLIGHT);
 252 GL_VEC_BLEND(SOFTLIGHT);
 253 GL_VEC_BLEND(DIFFERENCE);
 254
 255 static const char *read_texture_frag =
 256         "uniform sampler2D tex;\n"
 257         "void main()\n"
 258         "{\n"
 259         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 260         "}\n";
 261
 262 static const char *multiply_mask4_frag =
 263         "uniform sampler2D tex;\n"
 264         "uniform sampler2D tex1;\n"
 265         "uniform float scale;\n"
 266         "void main()\n"
 267         "{\n"
 268         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 269         "       gl_FragColor.a *= texture2D(tex1, gl_TexCoord[0].st / vec2(scale, scale)).r;\n"
 270         "}\n";
 271
 272 static const char *multiply_mask3_frag =
 273         "uniform sampler2D tex;\n"
 274         "uniform sampler2D tex1;\n"
 275         "uniform float scale;\n"
 276         "uniform bool is_yuv;\n"
 277         "void main()\n"
 278         "{\n"
 279         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 280         "       float a = texture2D(tex1, gl_TexCoord[0].st / vec2(scale, scale)).r;\n"
 281         "       gl_FragColor.rgb *= vec3(a, a, a);\n"
 282         "}\n";
 283
 284 static const char *multiply_yuvmask3_frag =
 285         "uniform sampler2D tex;\n"
 286         "uniform sampler2D tex1;\n"
 287         "uniform float scale;\n"
 288         "void main()\n"
 289         "{\n"
 290         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 291         "       float a = texture2D(tex1, gl_TexCoord[0].st / vec2(scale, scale)).r;\n"
 292         "       gl_FragColor.gb -= vec2(0.5, 0.5);\n"
 293         "       gl_FragColor.rgb *= vec3(a, a, a);\n"
 294         "       gl_FragColor.gb += vec2(0.5, 0.5);\n"
 295         "}\n";
 296
 297 static const char *fade_rgba_frag =
 298         "uniform sampler2D tex;\n"
 299         "uniform float alpha;\n"
 300         "void main()\n"
 301         "{\n"
 302         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 303         "       gl_FragColor.a *= alpha;\n"
 304         "}\n";
 305
 306 static const char *fade_yuv_frag =
 307         "uniform sampler2D tex;\n"
 308         "uniform float alpha;\n"
 309         "void main()\n"
 310         "{\n"
 311         "       gl_FragColor = texture2D(tex, gl_TexCoord[0].st);\n"
 312         "       gl_FragColor.r *= alpha;\n"
 313         "       gl_FragColor.gb -= vec2(0.5, 0.5);\n"
 314         "       gl_FragColor.g *= alpha;\n"
 315         "       gl_FragColor.b *= alpha;\n"
 316         "       gl_FragColor.gb += vec2(0.5, 0.5);\n"
 317         "}\n";
 318
 319 #endif
 320
 321
 322 Playback3DCommand::Playback3DCommand()
 323  : BC_SynchronousCommand()
 324 {
 325         canvas = 0;
 326         is_nested = 0;
 327 }
 328
 329 void Playback3DCommand::copy_from(BC_SynchronousCommand *command)
 330 {
 331         Playback3DCommand *ptr = (Playback3DCommand*)command;
 332         this->canvas = ptr->canvas;
 333         this->is_cleared = ptr->is_cleared;
 334
 335         this->in_x1 = ptr->in_x1;
 336         this->in_y1 = ptr->in_y1;
 337         this->in_x2 = ptr->in_x2;
 338         this->in_y2 = ptr->in_y2;
 339         this->out_x1 = ptr->out_x1;
 340         this->out_y1 = ptr->out_y1;
 341         this->out_x2 = ptr->out_x2;
 342         this->out_y2 = ptr->out_y2;
 343         this->alpha = ptr->alpha;
 344         this->mode = ptr->mode;
 345         this->interpolation_type = ptr->interpolation_type;
 346
 347         this->input = ptr->input;
 348         this->start_position_project = ptr->start_position_project;
 349         this->keyframe_set = ptr->keyframe_set;
 350         this->keyframe = ptr->keyframe;
 351         this->default_auto = ptr->default_auto;
 352         this->plugin_client = ptr->plugin_client;
 353         this->want_texture = ptr->want_texture;
 354         this->is_nested = ptr->is_nested;
 355         this->dst_cmodel = ptr->dst_cmodel;
 356
 357         BC_SynchronousCommand::copy_from(command);
 358 }
 359
 360
 361 ///static void glDebugCallback(GLenum src, GLenum typ, GLuint id,
 362 ///     GLenum svy, GLsizei len, const GLchar* msg, void* dat)
 363 //static void glDebugCallback(unsigned int src, unsigned int typ, unsigned int id,
 364 //      unsigned int svy, int len, const char* msg, const void* dat)
 365 //{
 366 //      printf("glDebug: %d:%d; %d/%d %s\n",src,typ,id,svy,msg);
 367 //}
 368
 369
 370 Playback3D::Playback3D(MWindow *mwindow)
 371  : BC_Synchronous()
 372 {
 373         this->mwindow = mwindow;
 374         temp_texture = 0;
 375         //Enabling OpenGL debug output on nVidia drivers
 376 //      glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
 377 //      glEnable(GL_DEBUG_OUTPUT);
 378 //      glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
 379 //      glDebugMessageCallback(glDebugCallback, 0);
 380 }
 381
 382 Playback3D::~Playback3D()
 383 {
 384 }
 385
 386
 387
 388
 389 BC_SynchronousCommand* Playback3D::new_command()
 390 {
 391         return new Playback3DCommand;
 392 }
 393
 394
 395
 396 void Playback3D::handle_command(BC_SynchronousCommand *command)
 397 {
 398 //printf("Playback3D::handle_command 1 %d\n", command->command);
 399         switch(command->command)
 400         {
 401                 case Playback3DCommand::WRITE_BUFFER:
 402                         write_buffer_sync((Playback3DCommand*)command);
 403                         break;
 404
 405                 case Playback3DCommand::FINISH_OUTPUT:
 406                         finish_output_sync((Playback3DCommand*)command);
 407                         break;
 408
 409                 case Playback3DCommand::CLEAR_OUTPUT:
 410                         clear_output_sync((Playback3DCommand*)command);
 411                         break;
 412
 413                 case Playback3DCommand::CLEAR_INPUT:
 414                         clear_input_sync((Playback3DCommand*)command);
 415                         break;
 416
 417                 case Playback3DCommand::DO_CAMERA:
 418                         do_camera_sync((Playback3DCommand*)command);
 419                         break;
 420
 421                 case Playback3DCommand::OVERLAY:
 422                         overlay_sync((Playback3DCommand*)command);
 423                         break;
 424
 425                 case Playback3DCommand::DO_FADE:
 426                         do_fade_sync((Playback3DCommand*)command);
 427                         break;
 428
 429                 case Playback3DCommand::DO_MASK:
 430                         do_mask_sync((Playback3DCommand*)command);
 431                         break;
 432
 433                 case Playback3DCommand::PLUGIN:
 434                         run_plugin_sync((Playback3DCommand*)command);
 435                         break;
 436
 437                 case Playback3DCommand::COPY_FROM:
 438                         copy_from_sync((Playback3DCommand*)command);
 439                         break;
 440
 441                 case Playback3DCommand::CONVERT_CMODEL:
 442                         convert_cmodel_sync((Playback3DCommand*)command);
 443                         break;
 444
 445 //              case Playback3DCommand::DRAW_REFRESH:
 446 //                      draw_refresh_sync((Playback3DCommand*)command);
 447 //                      break;
 448         }
 449 //printf("Playback3D::handle_command 10\n");
 450 }
 451
 452
 453
 454
 455 void Playback3D::copy_from(Canvas *canvas,
 456         VFrame *dst,
 457         VFrame *src,
 458         int want_texture)
 459 {
 460         Playback3DCommand command;
 461         command.command = Playback3DCommand::COPY_FROM;
 462         command.canvas = canvas;
 463         command.frame = dst;
 464         command.input = src;
 465         command.want_texture = want_texture;
 466         send_command(&command);
 467 }
 468
 469 void Playback3D::copy_from_sync(Playback3DCommand *command)
 470 {
 471 #ifdef HAVE_GL
 472         BC_WindowBase *window =
 473                 command->canvas->lock_canvas("Playback3D::copy_from_sync");
 474         if( window ) {
 475                 window->enable_opengl();
 476                 int w = command->input->get_w();
 477                 int h = command->input->get_h();
 478
 479                 if(command->input->get_opengl_state() == VFrame::SCREEN &&
 480                         w == command->frame->get_w() && h == command->frame->get_h())
 481                 {
 482 // printf("Playback3D::copy_from_sync 1 %d %d %d %d %d\n",
 483 // command->input->get_w(),
 484 // command->input->get_h(),
 485 // command->frame->get_w(),
 486 // command->frame->get_h(),
 487 // command->frame->get_color_model());
 488 // With NVidia at least,
 489                         if(w % 4)
 490                         {
 491                                 printf("Playback3D::copy_from_sync: w=%d not supported because it is not divisible by 4.\n", w);
 492                         }
 493                         else
 494 // Copy to texture
 495                         if(command->want_texture)
 496                         {
 497 //printf("Playback3D::copy_from_sync 1 dst=%p src=%p\n", command->frame, command->input);
 498 // Screen_to_texture requires the source pbuffer enabled.
 499                                 command->input->enable_opengl();
 500                                 command->frame->screen_to_texture();
 501                                 command->frame->set_opengl_state(VFrame::TEXTURE);
 502                         }
 503                         else
 504 // Copy to RAM
 505                         {
 506                                 command->input->to_texture();
 507                                 command->input->bind_texture(0);
 508                                 command->frame->enable_opengl();
 509                                 command->frame->init_screen();
 510                                 unsigned int shader = BC_CModels::is_yuv(command->input->get_color_model()) ?
 511                                         VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 512                                 if( shader > 0 ) {
 513                                         glUseProgram(shader);
 514                                         int variable = glGetUniformLocation(shader, "tex");
 515                                         glUniform1i(variable, 0);
 516                                         BC_GL_YUV_TO_RGB(shader);
 517                                 }
 518                                 else
 519                                         glUseProgram(0);
 520                                 command->input->draw_texture(1);
 521                                 command->frame->screen_to_ram();
 522                                 glUseProgram(0);
 523                         }
 524                 }
 525                 else
 526                 {
 527                         printf("Playback3D::copy_from_sync: invalid formats opengl_state=%d %dx%d -> %dx%d\n",
 528                                 command->input->get_opengl_state(), w, h,
 529                                 command->frame->get_w(), command->frame->get_h());
 530                 }
 531         }
 532         command->canvas->unlock_canvas();
 533 #endif
 534 }
 535
 536
 537
 538
 539 // void Playback3D::draw_refresh(Canvas *canvas,
 540 //      VFrame *frame,
 541 //      float in_x1,
 542 //      float in_y1,
 543 //      float in_x2,
 544 //      float in_y2,
 545 //      float out_x1,
 546 //      float out_y1,
 547 //      float out_x2,
 548 //      float out_y2)
 549 // {
 550 //      Playback3DCommand command;
 551 //      command.command = Playback3DCommand::DRAW_REFRESH;
 552 //      command.canvas = canvas;
 553 //      command.frame = frame;
 554 //      command.in_x1 = in_x1;
 555 //      command.in_y1 = in_y1;
 556 //      command.in_x2 = in_x2;
 557 //      command.in_y2 = in_y2;
 558 //      command.out_x1 = out_x1;
 559 //      command.out_y1 = out_y1;
 560 //      command.out_x2 = out_x2;
 561 //      command.out_y2 = out_y2;
 562 //      send_command(&command);
 563 // }
 564 //
 565 // void Playback3D::draw_refresh_sync(Playback3DCommand *command)
 566 // {
 567 // #ifdef HAVE_GL
 568 //      BC_WindowBase *window =
 569 //              command->canvas->lock_canvas("Playback3D::draw_refresh_sync");
 570 //      if( window ) {
 571 //              window->enable_opengl();
 572 //
 573 // // Read output pbuffer back to RAM in project colormodel
 574 // // RGB 8bit is fastest for OpenGL to read back.
 575 //              command->frame->reallocate(0,
 576 //                      0,
 577 //                      0,
 578 //                      0,
 579 //                      command->frame->get_w(),
 580 //                      command->frame->get_h(),
 581 //                      BC_RGB888,
 582 //                      -1);
 583 //              command->frame->screen_to_ram();
 584 //
 585 //              window->clear_box(0,
 586 //                                              0,
 587 //                                              window->get_w(),
 588 //                                              window->get_h());
 589 //              window->draw_vframe(command->frame,
 590 //                                                      (int)command->out_x1,
 591 //                                                      (int)command->out_y1,
 592 //                                                      (int)(command->out_x2 - command->out_x1),
 593 //                                                      (int)(command->out_y2 - command->out_y1),
 594 //                                                      (int)command->in_x1,
 595 //                                                      (int)command->in_y1,
 596 //                                                      (int)(command->in_x2 - command->in_x1),
 597 //                                                      (int)(command->in_y2 - command->in_y1),
 598 //                                                      0);
 599 //
 600 //      }
 601 //      command->canvas->unlock_canvas();
 602 // #endif
 603 // }
 604
 605
 606
 607
 608
 609 void Playback3D::write_buffer(Canvas *canvas,
 610         VFrame *frame,
 611         float in_x1,
 612         float in_y1,
 613         float in_x2,
 614         float in_y2,
 615         float out_x1,
 616         float out_y1,
 617         float out_x2,
 618         float out_y2,
 619         int is_cleared)
 620 {
 621         Playback3DCommand command;
 622         command.command = Playback3DCommand::WRITE_BUFFER;
 623         command.canvas = canvas;
 624         command.frame = frame;
 625         command.in_x1 = in_x1;
 626         command.in_y1 = in_y1;
 627         command.in_x2 = in_x2;
 628         command.in_y2 = in_y2;
 629         command.out_x1 = out_x1;
 630         command.out_y1 = out_y1;
 631         command.out_x2 = out_x2;
 632         command.out_y2 = out_y2;
 633         command.is_cleared = is_cleared;
 634         send_command(&command);
 635 }
 636
 637
 638 void Playback3D::write_buffer_sync(Playback3DCommand *command)
 639 {
 640 #ifdef HAVE_GL
 641         BC_WindowBase *window =
 642                 command->canvas->lock_canvas("Playback3D::write_buffer_sync");
 643         if( window ) {
 644 // Update hidden cursor
 645                 window->update_video_cursor();
 646 // Make sure OpenGL is enabled first.
 647                 window->enable_opengl();
 648
 649 //printf("Playback3D::write_buffer_sync 1 %d\n", window->get_id());
 650                 int flip_y = 0, frame_state = command->frame->get_opengl_state();
 651                 switch( frame_state ) {
 652 // Upload texture and composite to screen
 653                         case VFrame::RAM:
 654                                 flip_y = 1;
 655                         case VFrame::SCREEN:
 656                                 command->frame->to_texture();
 657                                 window->enable_opengl();
 658 // Composite texture to screen and swap buffer
 659                         case VFrame::TEXTURE:
 660                                 if( !flip_y ) {
 661                                         int fh1 = command->frame->get_h()-1;
 662                                         float in_y1 = fh1 - command->in_y1;
 663                                         float in_y2 = fh1 - command->in_y2;
 664                                         command->in_y1 = in_y2;
 665                                         command->in_y2 = in_y1;
 666                                 }
 667                                 draw_output(command, flip_y);
 668                                 break;
 669                         default:
 670                                 printf("Playback3D::write_buffer_sync unknown state\n");
 671                                 break;
 672                 }
 673                 command->frame->set_opengl_state(frame_state);
 674         }
 675         command->canvas->unlock_canvas();
 676 #endif
 677 }
 678
 679
 680
 681 void Playback3D::draw_output(Playback3DCommand *command, int flip_y)
 682 {
 683 #ifdef HAVE_GL
 684         int texture_id = command->frame->get_texture_id();
 685         BC_WindowBase *window = command->canvas->get_canvas();
 686
 687 // printf("Playback3D::draw_output 1 texture_id=%d window=%p\n",
 688 // texture_id,
 689 // command->canvas->get_canvas());
 690
 691
 692
 693
 694 // If virtual console is being used, everything in this function has
 695 // already been done except the page flip.
 696         if(texture_id >= 0)
 697         {
 698                 canvas_w = window->get_w();
 699                 canvas_h = window->get_h();
 700                 VFrame::init_screen(canvas_w, canvas_h);
 701                 int color_model = command->frame->get_color_model();
 702                 int is_yuv = BC_CModels::is_yuv(color_model);
 703
 704                 if(!command->is_cleared)
 705                 {
 706 // If we get here, the virtual console was not used.
 707                         init_frame(command, 0);
 708                 }
 709
 710 // Texture
 711 // Undo any previous shader settings
 712                 command->frame->bind_texture(0);
 713
 714 // Convert colormodel
 715                 unsigned int shader = is_yuv ? VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 716                 if( shader > 0 ) {
 717                         glUseProgram(shader);
 718 // Set texture unit of the texture
 719                         int variable = glGetUniformLocation(shader, "tex");
 720                         glUniform1i(variable, 0);
 721                         BC_GL_YUV_TO_RGB(shader);
 722                 }
 723
 724 //              if(BC_CModels::components(color_model) == 4)
 725 //              {
 726 //                      glEnable(GL_BLEND);
 727 //                      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 728 //              }
 729
 730                 command->frame->draw_texture(
 731                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
 732                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
 733                         flip_y);
 734
 735
 736 //printf("Playback3D::draw_output 2 %f,%f %f,%f -> %f,%f %f,%f\n",
 737 // command->in_x1,
 738 // command->in_y1,
 739 // command->in_x2,
 740 // command->in_y2,
 741 // command->out_x1,
 742 // command->out_y1,
 743 // command->out_x2,
 744 // command->out_y2);
 745
 746                 glUseProgram(0);
 747
 748                 command->canvas->get_canvas()->flip_opengl();
 749
 750         }
 751 #endif
 752 }
 753
 754
 755 void Playback3D::init_frame(Playback3DCommand *command, int is_yuv)
 756 {
 757 #ifdef HAVE_GL
 758         float gbuv = is_yuv ? 0.5 : 0.0;
 759         glClearColor(0.0, gbuv, gbuv, 0.0);
 760         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 761 #endif
 762 }
 763
 764
 765 void Playback3D::finish_output(Canvas *canvas)
 766 {
 767         Playback3DCommand command;
 768         command.canvas = canvas;
 769         command.command = Playback3DCommand::FINISH_OUTPUT;
 770         send_command(&command);
 771 }
 772
 773 void Playback3D::finish_output_sync(Playback3DCommand *command)
 774 {
 775 #ifdef HAVE_GL
 776         BC_WindowBase *window =
 777                 command->canvas->lock_canvas("Playback3D::finish_output_sync");
 778         if( window ) {
 779                 command->canvas->get_canvas()->enable_opengl();
 780                 glFinish();
 781         }
 782         command->canvas->unlock_canvas();
 783 #endif
 784 }
 785
 786
 787 void Playback3D::clear_output(Canvas *canvas, VFrame *output)
 788 {
 789         Playback3DCommand command;
 790         command.command = Playback3DCommand::CLEAR_OUTPUT;
 791         command.canvas = canvas;
 792         command.frame = output;
 793         send_command(&command);
 794 }
 795
 796 void Playback3D::clear_output_sync(Playback3DCommand *command)
 797 {
 798 #ifdef HAVE_GL
 799         BC_WindowBase *window =
 800                 command->canvas->lock_canvas("Playback3D::clear_output_sync");
 801         if( window ) {
 802 // If we get here, the virtual console is being used.
 803                 command->canvas->get_canvas()->enable_opengl();
 804                 int is_yuv = 0;
 805 // Using pbuffer for refresh frame.
 806                 if( command->frame ) {
 807                         command->frame->enable_opengl();
 808                         int color_model = command->canvas->mwindow->edl->session->color_model;
 809                         is_yuv = BC_CModels::is_yuv(color_model);
 810                 }
 811
 812                 init_frame(command, is_yuv);
 813         }
 814         command->canvas->unlock_canvas();
 815 #endif
 816 }
 817
 818
 819 void Playback3D::clear_input(Canvas *canvas, VFrame *frame)
 820 {
 821         Playback3DCommand command;
 822         command.command = Playback3DCommand::CLEAR_INPUT;
 823         command.canvas = canvas;
 824         command.frame = frame;
 825         send_command(&command);
 826 }
 827
 828 void Playback3D::clear_input_sync(Playback3DCommand *command)
 829 {
 830 #ifdef HAVE_GL
 831         BC_WindowBase *window =
 832                 command->canvas->lock_canvas("Playback3D::clear_input_sync");
 833         if( window ) {
 834                 command->canvas->get_canvas()->enable_opengl();
 835                 command->frame->enable_opengl();
 836                 command->frame->clear_pbuffer();
 837                 command->frame->set_opengl_state(VFrame::SCREEN);
 838         }
 839         command->canvas->unlock_canvas();
 840 #endif
 841 }
 842
 843 void Playback3D::do_camera(Canvas *canvas,
 844         VFrame *output,
 845         VFrame *input,
 846         float in_x1,
 847         float in_y1,
 848         float in_x2,
 849         float in_y2,
 850         float out_x1,
 851         float out_y1,
 852         float out_x2,
 853         float out_y2)
 854 {
 855         Playback3DCommand command;
 856         command.command = Playback3DCommand::DO_CAMERA;
 857         command.canvas = canvas;
 858         command.input = input;
 859         command.frame = output;
 860         command.in_x1 = in_x1;
 861         command.in_y1 = in_y1;
 862         command.in_x2 = in_x2;
 863         command.in_y2 = in_y2;
 864         command.out_x1 = out_x1;
 865         command.out_y1 = out_y1;
 866         command.out_x2 = out_x2;
 867         command.out_y2 = out_y2;
 868         send_command(&command);
 869 }
 870
 871 void Playback3D::do_camera_sync(Playback3DCommand *command)
 872 {
 873 #ifdef HAVE_GL
 874         BC_WindowBase *window =
 875                 command->canvas->lock_canvas("Playback3D::do_camera_sync");
 876         if( window ) {
 877                 command->canvas->get_canvas()->enable_opengl();
 878
 879                 command->input->to_texture();
 880                 command->frame->enable_opengl();
 881                 command->frame->init_screen();
 882                 command->frame->clear_pbuffer();
 883
 884                 command->input->bind_texture(0);
 885 // Must call draw_texture in input frame to get the texture coordinates right.
 886
 887 // printf("Playback3D::do_camera_sync 1 %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f\n",
 888 // command->in_x1,
 889 // command->in_y2,
 890 // command->in_x2,
 891 // command->in_y1,
 892 // command->out_x1,
 893 // (float)command->input->get_h() - command->out_y1,
 894 // command->out_x2,
 895 // (float)command->input->get_h() - command->out_y2);
 896                 command->input->draw_texture(
 897                         command->in_x1, command->in_y2,
 898                         command->in_x2, command->in_y1,
 899                         command->out_x1,
 900                         (float)command->frame->get_h() - command->out_y1,
 901                         command->out_x2,
 902                         (float)command->frame->get_h() - command->out_y2);
 903
 904
 905                 command->frame->set_opengl_state(VFrame::SCREEN);
 906                 command->frame->screen_to_ram();
 907         }
 908         command->canvas->unlock_canvas();
 909 #endif
 910 }
 911
 912 void Playback3D::overlay(Canvas *canvas, VFrame *input,
 913         float in_x1, float in_y1, float in_x2, float in_y2,
 914         float out_x1, float out_y1, float out_x2, float out_y2,
 915         float alpha, int mode, int interpolation_type,
 916         VFrame *output, int is_nested)
 917 {
 918         Playback3DCommand command;
 919         command.command = Playback3DCommand::OVERLAY;
 920         command.canvas = canvas;
 921         command.frame = output;
 922         command.input = input;
 923         command.in_x1 = in_x1;
 924         command.in_y1 = in_y1;
 925         command.in_x2 = in_x2;
 926         command.in_y2 = in_y2;
 927         command.out_x1 = out_x1;
 928         command.out_y1 = out_y1;
 929         command.out_x2 = out_x2;
 930         command.out_y2 = out_y2;
 931         command.alpha = alpha;
 932         command.mode = mode;
 933         command.interpolation_type = interpolation_type;
 934         command.is_nested = is_nested;
 935         send_command(&command);
 936 }
 937
 938 void Playback3D::overlay_sync(Playback3DCommand *command)
 939 {
 940 #ifdef HAVE_GL
 941 // To do these operations, we need to copy the input buffer to a texture
 942 // and blend 2 textures in a shader
 943         static const char * const overlay_shaders[TRANSFER_TYPES] = {
 944                 blend_NORMAL_frag,      // TRANSFER_NORMAL
 945                 blend_ADDITION_frag,    // TRANSFER_ADDITION
 946                 blend_SUBTRACT_frag,    // TRANSFER_SUBTRACT
 947                 blend_MULTIPLY_frag,    // TRANSFER_MULTIPLY
 948                 blend_DIVIDE_frag,      // TRANSFER_DIVIDE
 949                 blend_REPLACE_frag,     // TRANSFER_REPLACE
 950                 blend_MAX_frag,         // TRANSFER_MAX
 951                 blend_MIN_frag,         // TRANSFER_MIN
 952                 blend_DARKEN_frag,      // TRANSFER_DARKEN
 953                 blend_LIGHTEN_frag,     // TRANSFER_LIGHTEN
 954                 blend_DST_frag,         // TRANSFER_DST
 955                 blend_DST_ATOP_frag,    // TRANSFER_DST_ATOP
 956                 blend_DST_IN_frag,      // TRANSFER_DST_IN
 957                 blend_DST_OUT_frag,     // TRANSFER_DST_OUT
 958                 blend_DST_OVER_frag,    // TRANSFER_DST_OVER
 959                 blend_SRC_frag,         // TRANSFER_SRC
 960                 blend_SRC_ATOP_frag,    // TRANSFER_SRC_ATOP
 961                 blend_SRC_IN_frag,      // TRANSFER_SRC_IN
 962                 blend_SRC_OUT_frag,     // TRANSFER_SRC_OUT
 963                 blend_SRC_OVER_frag,    // TRANSFER_SRC_OVER
 964                 blend_AND_frag,         // TRANSFER_AND
 965                 blend_OR_frag,          // TRANSFER_OR
 966                 blend_XOR_frag,         // TRANSFER_XOR
 967                 blend_OVERLAY_frag,     // TRANSFER_OVERLAY
 968                 blend_SCREEN_frag,      // TRANSFER_SCREEN
 969                 blend_BURN_frag,        // TRANSFER_BURN
 970                 blend_DODGE_frag,       // TRANSFER_DODGE
 971                 blend_HARDLIGHT_frag,   // TRANSFER_HARDLIGHT
 972                 blend_SOFTLIGHT_frag,   // TRANSFER_SOFTLIGHT
 973                 blend_DIFFERENCE_frag,  // TRANSFER_DIFFERENCE
 974         };
 975
 976         BC_WindowBase *window =
 977                 command->canvas->lock_canvas("Playback3D::overlay_sync");
 978         if( window ) {
 979 // Make sure OpenGL is enabled first.
 980                 window->enable_opengl();
 981                 window->update_video_cursor();
 982
 983                 glColor4f(1, 1, 1, 1);
 984                 glDisable(GL_BLEND);
 985
 986
 987 //printf("Playback3D::overlay_sync 1 %d\n", command->input->get_opengl_state());
 988                 switch( command->input->get_opengl_state() ) {
 989 // Upload texture and composite to screen
 990                 case VFrame::RAM:
 991                         command->input->to_texture();
 992                         break;
 993 // Just composite texture to screen
 994                 case VFrame::TEXTURE:
 995                         break;
 996 // read from PBuffer to texture, then composite texture to screen
 997                 case VFrame::SCREEN:
 998                         command->input->enable_opengl();
 999                         command->input->screen_to_texture();
1000                         break;
1001                 default:
1002                         printf("Playback3D::overlay_sync unknown state\n");
1003                         break;
1004                 }
1005
1006                 if(command->frame) {
1007 // Render to PBuffer
1008                         command->frame->enable_opengl();
1009                         command->frame->set_opengl_state(VFrame::SCREEN);
1010                         canvas_w = command->frame->get_w();
1011                         canvas_h = command->frame->get_h();
1012                 }
1013                 else {
1014 // Render to canvas
1015                         window->enable_opengl();
1016                         canvas_w = window->get_w();
1017                         canvas_h = window->get_h();
1018                 }
1019
1020
1021                 const char *shader_stack[16];
1022                 memset(shader_stack,0, sizeof(shader_stack));
1023                 int total_shaders = 0, need_matrix = 0;
1024
1025                 VFrame::init_screen(canvas_w, canvas_h);
1026
1027 // Enable texture
1028                 command->input->bind_texture(0);
1029
1030 // Convert colormodel to RGB if not nested.
1031 // The color model setting in the output frame is ignored.
1032 //              if( command->is_nested <= 0 &&  // not nested
1033 //                  BC_CModels::is_yuv(command->input->get_color_model()) ) {
1034 //                      need_matrix = 1;
1035 //                      shader_stack[total_shaders++] = yuv_to_rgb_frag;
1036 //              }
1037
1038 // get the shaders
1039 #define add_shader(s) \
1040   if(!total_shaders) shader_stack[total_shaders++] = read_texture_frag; \
1041   shader_stack[total_shaders++] = s
1042
1043                 switch(command->mode) {
1044                 case TRANSFER_REPLACE:
1045 // This requires overlaying an alpha multiplied image on a black screen.
1046                         if( command->input->get_texture_components() != 4 ) break;
1047                         add_shader(overlay_shaders[command->mode]);
1048                         break;
1049                 default:
1050                         enable_overlay_texture(command);
1051                         add_shader(overlay_shaders[command->mode]);
1052                         break;
1053                 }
1054
1055 // if to flatten alpha
1056 //              if( command->is_nested < 0 ) {
1057 //                      switch(command->input->get_color_model()) {
1058 //// yuv has already been converted to rgb
1059 //                      case BC_YUVA8888:
1060 //                      case BC_RGBA_FLOAT:
1061 //                      case BC_RGBA8888:
1062 //                              add_shader(rgba_to_rgb_flatten);
1063 //                              break;
1064 //                      }
1065 //              }
1066
1067 // run the shaders
1068                 add_shader(0);
1069                 unsigned int shader = !shader_stack[0] ? 0 :
1070                         VFrame::make_shader(shader_stack);
1071                 if( shader > 0 ) {
1072                         glUseProgram(shader);
1073                         if( need_matrix ) BC_GL_YUV_TO_RGB(shader);
1074 // Set texture unit of the texture
1075                         glUniform1i(glGetUniformLocation(shader, "tex"), 0);
1076 // Set texture unit of the temp texture
1077                         glUniform1i(glGetUniformLocation(shader, "tex2"), 1);
1078 // Set alpha
1079                         int variable = glGetUniformLocation(shader, "alpha");
1080                         glUniform1f(variable, command->alpha);
1081 // Set dimensions of the temp texture
1082                         if(temp_texture)
1083                                 glUniform2f(glGetUniformLocation(shader, "tex2_dimensions"),
1084                                         (float)temp_texture->get_texture_w(),
1085                                         (float)temp_texture->get_texture_h());
1086                 }
1087                 else
1088                         glUseProgram(0);
1089
1090
1091 //printf("Playback3D::overlay_sync %f %f %f %f %f %f %f %f\n",
1092 // command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1093 // command->out_x1, command->out_y1, command->out_x2, command->out_y2);
1094
1095                 command->input->draw_texture(
1096                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1097                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
1098                         !command->is_nested);
1099                 glUseProgram(0);
1100
1101 // Delete temp texture
1102                 if(temp_texture) {
1103                         delete temp_texture;
1104                         temp_texture = 0;
1105                         glActiveTexture(GL_TEXTURE1);
1106                         glDisable(GL_TEXTURE_2D);
1107                 }
1108                 glActiveTexture(GL_TEXTURE0);
1109                 glDisable(GL_TEXTURE_2D);
1110         }
1111         command->canvas->unlock_canvas();
1112 #endif
1113 }
1114
1115 void Playback3D::enable_overlay_texture(Playback3DCommand *command)
1116 {
1117 #ifdef HAVE_GL
1118         glDisable(GL_BLEND);
1119
1120         glActiveTexture(GL_TEXTURE1);
1121         BC_Texture::new_texture(&temp_texture, canvas_w, canvas_h,
1122                 command->input->get_color_model());
1123         temp_texture->bind(1);
1124
1125 // Read canvas into texture
1126         glReadBuffer(GL_BACK);
1127         glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, canvas_w, canvas_h);
1128 #endif
1129 }
1130
1131
1132 void Playback3D::do_mask(Canvas *canvas,
1133         VFrame *output,
1134         int64_t start_position_project,
1135         MaskAutos *keyframe_set,
1136         MaskAuto *keyframe,
1137         MaskAuto *default_auto)
1138 {
1139         Playback3DCommand command;
1140         command.command = Playback3DCommand::DO_MASK;
1141         command.canvas = canvas;
1142         command.frame = output;
1143         command.start_position_project = start_position_project;
1144         command.keyframe_set = keyframe_set;
1145         command.keyframe = keyframe;
1146         command.default_auto = default_auto;
1147
1148         send_command(&command);
1149 }
1150
1151
1152
1153 #ifdef HAVE_GL
1154 struct Vertex : ListItem<Vertex>
1155 {
1156         GLdouble c[3];
1157 };
1158 // this list is only used from the main thread, no locking needed
1159 // this must be a list so that pointers to allocated entries remain valid
1160 // when new entries are added
1161 static List<Vertex> *vertex_cache = 0;
1162
1163 static void combine_callback(GLdouble coords[3],
1164         GLdouble *vertex_data[4],
1165         GLfloat weight[4],
1166         GLdouble **dataOut)
1167 {
1168 // can't use malloc here; GLU doesn't delete the memory for us!
1169         Vertex* vertex = vertex_cache->append();
1170         vertex->c[0] = coords[0];
1171         vertex->c[1] = coords[1];
1172         vertex->c[2] = coords[2];
1173 // we don't need to interpolate anything
1174
1175         *dataOut = &vertex->c[0];
1176 }
1177 #endif
1178
1179
1180 void Playback3D::do_mask_sync(Playback3DCommand *command)
1181 {
1182 #ifdef HAVE_GL
1183         BC_WindowBase *window =
1184                 command->canvas->lock_canvas("Playback3D::do_mask_sync");
1185         if( window ) {
1186                 window->enable_opengl();
1187
1188                 switch( command->frame->get_opengl_state() ) {
1189                 case VFrame::RAM:
1190 // Time to upload to the texture
1191                         command->frame->to_texture();
1192                         break;
1193
1194                 case VFrame::SCREEN:
1195 // Read back from PBuffer
1196 // Bind context to pbuffer
1197                         command->frame->enable_opengl();
1198                         command->frame->screen_to_texture();
1199                         break;
1200                 }
1201 // Create PBuffer and draw the mask on it
1202                 command->frame->enable_opengl();
1203
1204 // Initialize coordinate system
1205                 int w = command->frame->get_w();
1206                 int h = command->frame->get_h();
1207                 command->frame->init_screen();
1208
1209 // Clear screen
1210                 glDisable(GL_TEXTURE_2D);
1211                 if( command->default_auto->mode == MASK_MULTIPLY_ALPHA ) {
1212                         glClearColor(0.0, 0.0, 0.0, 0.0);
1213                         glColor4f((float)command->keyframe->value / 100,
1214                                 (float)command->keyframe->value / 100,
1215                                 (float)command->keyframe->value / 100,
1216                                 1.0);
1217                 }
1218                 else {
1219                         glClearColor(1.0, 1.0, 1.0, 1.0);
1220                         glColor4f((float)1.0 - (float)command->keyframe->value / 100,
1221                                 (float)1.0 - (float)command->keyframe->value / 100,
1222                                 (float)1.0 - (float)command->keyframe->value / 100,
1223                                 1.0);
1224                 }
1225                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1226
1227
1228 // Draw mask with scaling to simulate feathering
1229                 GLUtesselator *tesselator = gluNewTess();
1230                 gluTessProperty(tesselator, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
1231                 gluTessCallback(tesselator, GLU_TESS_VERTEX, (GLvoid (*) ( )) &glVertex3dv);
1232                 gluTessCallback(tesselator, GLU_TESS_BEGIN, (GLvoid (*) ( )) &glBegin);
1233                 gluTessCallback(tesselator, GLU_TESS_END, (GLvoid (*) ( )) &glEnd);
1234                 gluTessCallback(tesselator, GLU_TESS_COMBINE, (GLvoid (*) ( ))&combine_callback);
1235
1236                 vertex_cache = new List<Vertex>;
1237
1238
1239 // Draw every submask as a new polygon
1240                 int total_submasks = command->keyframe_set->total_submasks(
1241                         command->start_position_project,
1242                         PLAY_FORWARD);
1243                 float scale = command->keyframe->feather + 1;
1244                 int display_list = glGenLists(1);
1245                 glNewList(display_list, GL_COMPILE);
1246                 for(int k = 0; k < total_submasks; k++)
1247                 {
1248                         gluTessBeginPolygon(tesselator, NULL);
1249                         gluTessBeginContour(tesselator);
1250                         ArrayList<MaskPoint*> *points = new ArrayList<MaskPoint*>;
1251                         command->keyframe_set->get_points(points,
1252                                 k,
1253                                 command->start_position_project,
1254                                 PLAY_FORWARD);
1255
1256                         int first_point = 0;
1257 // Need to tabulate every vertex in persistent memory because
1258 // gluTessVertex doesn't copy them.
1259                         ArrayList<GLdouble*> coords;
1260                         coords.set_array_delete();
1261                         for(int i = 0; i < points->total; i++)
1262                         {
1263                                 MaskPoint *point1 = points->values[i];
1264                                 MaskPoint *point2 = (i >= points->total - 1) ?
1265                                         points->values[0] :
1266                                         points->values[i + 1];
1267
1268                                 float x, y;
1269                                 int segments = 0;
1270                                 if(point1->control_x2 == 0 &&
1271                                         point1->control_y2 == 0 &&
1272                                         point2->control_x1 == 0 &&
1273                                         point2->control_y1 == 0)
1274                                         segments = 1;
1275
1276                                 float x0 = point1->x;
1277                                 float y0 = point1->y;
1278                                 float x1 = point1->x + point1->control_x2;
1279                                 float y1 = point1->y + point1->control_y2;
1280                                 float x2 = point2->x + point2->control_x1;
1281                                 float y2 = point2->y + point2->control_y1;
1282                                 float x3 = point2->x;
1283                                 float y3 = point2->y;
1284
1285                                 // forward differencing bezier curves implementation taken from GPL code at
1286                                 // http://cvs.sourceforge.net/viewcvs.py/guliverkli/guliverkli/src/subtitles/Rasterizer.cpp?rev=1.3
1287
1288                                 float cx3, cx2, cx1, cx0, cy3, cy2, cy1, cy0;
1289
1290                                 // [-1 +3 -3 +1]
1291                                 // [+3 -6 +3  0]
1292                                 // [-3 +3  0  0]
1293                                 // [+1  0  0  0]
1294
1295                                 cx3 = -  x0 + 3*x1 - 3*x2 + x3;
1296                                 cx2 =  3*x0 - 6*x1 + 3*x2;
1297                                 cx1 = -3*x0 + 3*x1;
1298                                 cx0 =    x0;
1299
1300                                 cy3 = -  y0 + 3*y1 - 3*y2 + y3;
1301                                 cy2 =  3*y0 - 6*y1 + 3*y2;
1302                                 cy1 = -3*y0 + 3*y1;
1303                                 cy0 =    y0;
1304
1305                                 // This equation is from Graphics Gems I.
1306                                 //
1307                                 // The idea is that since we're approximating a cubic curve with lines,
1308                                 // any error we incur is due to the curvature of the line, which we can
1309                                 // estimate by calculating the maximum acceleration of the curve.  For
1310                                 // a cubic, the acceleration (second derivative) is a line, meaning that
1311                                 // the absolute maximum acceleration must occur at either the beginning
1312                                 // (|c2|) or the end (|c2+c3|).  Our bounds here are a little more
1313                                 // conservative than that, but that's okay.
1314                                 if (segments == 0)
1315                                 {
1316                                         float maxaccel1 = fabs(2*cy2) + fabs(6*cy3);
1317                                         float maxaccel2 = fabs(2*cx2) + fabs(6*cx3);
1318
1319                                         float maxaccel = maxaccel1 > maxaccel2 ? maxaccel1 : maxaccel2;
1320                                         float h = 1.0;
1321
1322                                         if(maxaccel > 8.0) h = sqrt((8.0) / maxaccel);
1323                                         segments = int(1/h);
1324                                 }
1325
1326                                 for(int j = 0; j <= segments; j++)
1327                                 {
1328                                         float t = (float)j / segments;
1329                                         x = cx0 + t*(cx1 + t*(cx2 + t*cx3));
1330                                         y = cy0 + t*(cy1 + t*(cy2 + t*cy3));
1331
1332                                         if(j > 0 || first_point)
1333                                         {
1334                                                 GLdouble *coord = new GLdouble[3];
1335                                                 coord[0] = x / scale;
1336                                                 coord[1] = -h + y / scale;
1337                                                 coord[2] = 0;
1338                                                 coords.append(coord);
1339                                                 first_point = 0;
1340                                         }
1341                                 }
1342                         }
1343
1344 // Now that we know the total vertices, send them to GLU
1345                         for(int i = 0; i < coords.total; i++)
1346                                 gluTessVertex(tesselator, coords.values[i], coords.values[i]);
1347
1348                         gluTessEndContour(tesselator);
1349                         gluTessEndPolygon(tesselator);
1350                         points->remove_all_objects();
1351                         delete points;
1352                         coords.remove_all_objects();
1353                 }
1354                 glEndList();
1355                 glCallList(display_list);
1356                 glDeleteLists(display_list, 1);
1357                 gluDeleteTess(tesselator);
1358
1359                 delete vertex_cache;
1360                 vertex_cache = 0;
1361
1362                 glColor4f(1, 1, 1, 1);
1363
1364
1365 // Read mask into temporary texture.
1366 // For feathering, just read the part of the screen after the downscaling.
1367
1368
1369                 float w_scaled = w / scale;
1370                 float h_scaled = h / scale;
1371 // Don't vary the texture size according to scaling because that
1372 // would waste memory.
1373 // This enables and binds the temporary texture.
1374                 glActiveTexture(GL_TEXTURE1);
1375                 BC_Texture::new_texture(&temp_texture,
1376                         w,
1377                         h,
1378                         command->frame->get_color_model());
1379                 temp_texture->bind(1);
1380                 glReadBuffer(GL_BACK);
1381
1382 // Need to add extra size to fill in the bottom right
1383                 glCopyTexSubImage2D(GL_TEXTURE_2D,
1384                         0,
1385                         0,
1386                         0,
1387                         0,
1388                         0,
1389                         (int)MIN(w_scaled + 2, w),
1390                         (int)MIN(h_scaled + 2, h));
1391
1392                 command->frame->bind_texture(0);
1393
1394
1395 // For feathered masks, use a shader to multiply.
1396 // For unfeathered masks, we could use a stencil buffer
1397 // for further optimization but we also need a YUV algorithm.
1398                 unsigned int frag_shader = 0;
1399                 switch(temp_texture->get_texture_components()) {
1400                 case 3:
1401                         frag_shader = VFrame::make_shader(0,
1402                                 command->frame->get_color_model() == BC_YUV888 ?
1403                                         multiply_yuvmask3_frag : multiply_mask3_frag,
1404                                 0);
1405                         break;
1406                 case 4:
1407                         frag_shader = VFrame::make_shader(0, multiply_mask4_frag, 0);
1408                         break;
1409                 }
1410
1411                 if( frag_shader ) {
1412                         int variable;
1413                         glUseProgram(frag_shader);
1414                         if((variable = glGetUniformLocation(frag_shader, "tex")) >= 0)
1415                                 glUniform1i(variable, 0);
1416                         if((variable = glGetUniformLocation(frag_shader, "tex1")) >= 0)
1417                                 glUniform1i(variable, 1);
1418                         if((variable = glGetUniformLocation(frag_shader, "scale")) >= 0)
1419                                 glUniform1f(variable, scale);
1420                 }
1421
1422
1423
1424 // Write texture to PBuffer with multiply and scaling for feather.
1425
1426
1427                 command->frame->draw_texture(0, 0, w, h, 0, 0, w, h);
1428                 command->frame->set_opengl_state(VFrame::SCREEN);
1429
1430
1431 // Disable temp texture
1432                 glUseProgram(0);
1433
1434                 glActiveTexture(GL_TEXTURE1);
1435                 glDisable(GL_TEXTURE_2D);
1436                 delete temp_texture;
1437                 temp_texture = 0;
1438
1439                 glActiveTexture(GL_TEXTURE0);
1440                 glDisable(GL_TEXTURE_2D);
1441
1442 // Default drawable
1443                 window->enable_opengl();
1444         }
1445         command->canvas->unlock_canvas();
1446 #endif
1447 }
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458 void Playback3D::convert_cmodel(Canvas *canvas,
1459         VFrame *output,
1460         int dst_cmodel)
1461 {
1462 // Do nothing if colormodels are equivalent in OpenGL & the image is in hardware.
1463         int src_cmodel = output->get_color_model();
1464         if(
1465                 (output->get_opengl_state() == VFrame::TEXTURE ||
1466                 output->get_opengl_state() == VFrame::SCREEN) &&
1467 // OpenGL has no floating point.
1468                 ( (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGB_FLOAT) ||
1469                   (src_cmodel == BC_RGBA8888 && dst_cmodel == BC_RGBA_FLOAT) ||
1470                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGB888) ||
1471                   (src_cmodel == BC_RGBA_FLOAT && dst_cmodel == BC_RGBA8888) ||
1472 // OpenGL sets alpha to 1 on import
1473                   (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGBA8888) ||
1474                   (src_cmodel == BC_YUV888 && dst_cmodel == BC_YUVA8888) ||
1475                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGBA_FLOAT) )
1476                 ) return;
1477
1478
1479
1480         Playback3DCommand command;
1481         command.command = Playback3DCommand::CONVERT_CMODEL;
1482         command.canvas = canvas;
1483         command.frame = output;
1484         command.dst_cmodel = dst_cmodel;
1485         send_command(&command);
1486 }
1487
1488 void Playback3D::convert_cmodel_sync(Playback3DCommand *command)
1489 {
1490 #ifdef HAVE_GL
1491         BC_WindowBase *window =
1492                 command->canvas->lock_canvas("Playback3D::convert_cmodel_sync");
1493         if( window ) {
1494                 window->enable_opengl();
1495
1496 // Import into hardware
1497                 command->frame->enable_opengl();
1498                 command->frame->init_screen();
1499                 command->frame->to_texture();
1500
1501 // Colormodel permutation
1502                 int src_cmodel = command->frame->get_color_model();
1503                 int dst_cmodel = command->dst_cmodel;
1504                 typedef struct {
1505                         int src, dst, typ;
1506                         const char *shader;
1507                 } cmodel_shader_table_t;
1508                 enum { rgb_to_rgb, rgb_to_yuv, yuv_to_rgb, yuv_to_yuv, };
1509                 int type = -1;
1510                 static cmodel_shader_table_t cmodel_shader_table[]  = {
1511                         { BC_RGB888,    BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1512                         { BC_RGB888,    BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1513                         { BC_RGBA8888,  BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1514                         { BC_RGBA8888,  BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1515                         { BC_RGBA8888,  BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1516                         { BC_RGBA8888,  BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1517                         { BC_RGB_FLOAT, BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1518                         { BC_RGB_FLOAT, BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1519                         { BC_RGBA_FLOAT,BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1520                         { BC_RGBA_FLOAT,BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1521                         { BC_RGBA_FLOAT,BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1522                         { BC_RGBA_FLOAT,BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1523                         { BC_YUV888,    BC_RGB888,      yuv_to_rgb, yuv_to_rgb_frag  },
1524                         { BC_YUV888,    BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1525                         { BC_YUV888,    BC_RGB_FLOAT,   yuv_to_rgb, yuv_to_rgb_frag  },
1526                         { BC_YUV888,    BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1527                         { BC_YUVA8888,  BC_RGB888,      yuv_to_rgb, yuva_to_rgb_frag },
1528                         { BC_YUVA8888,  BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1529                         { BC_YUVA8888,  BC_RGB_FLOAT,   yuv_to_rgb, yuva_to_rgb_frag },
1530                         { BC_YUVA8888,  BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1531                         { BC_YUVA8888,  BC_YUV888,      yuv_to_yuv, yuva_to_yuv_frag },
1532                 };
1533
1534                 const char *shader = 0;
1535                 int table_size = sizeof(cmodel_shader_table) / sizeof(cmodel_shader_table_t);
1536                 for( int i=0; i<table_size; ++i ) {
1537                         if( cmodel_shader_table[i].src == src_cmodel &&
1538                             cmodel_shader_table[i].dst == dst_cmodel ) {
1539                                 shader = cmodel_shader_table[i].shader;
1540                                 type = cmodel_shader_table[i].typ;
1541                                 break;
1542                         }
1543                 }
1544
1545 // printf("Playback3D::convert_cmodel_sync %d %d %d shader=\n%s",
1546 // __LINE__,
1547 // command->frame->get_color_model(),
1548 // command->dst_cmodel,
1549 // shader);
1550
1551                 const char *shader_stack[9];
1552                 memset(shader_stack,0, sizeof(shader_stack));
1553                 int current_shader = 0;
1554
1555                 if( shader ) {
1556 //printf("Playback3D::convert_cmodel_sync %d\n", __LINE__);
1557                         shader_stack[current_shader++] = shader;
1558                         shader_stack[current_shader] = 0;
1559                         unsigned int shader_id = VFrame::make_shader(shader_stack);
1560
1561                         command->frame->bind_texture(0);
1562                         glUseProgram(shader_id);
1563
1564                         glUniform1i(glGetUniformLocation(shader_id, "tex"), 0);
1565                         switch( type ) {
1566                         case rgb_to_yuv:
1567                                 BC_GL_RGB_TO_YUV(shader_id);
1568                                 break;
1569                         case yuv_to_rgb:
1570                                 BC_GL_YUV_TO_RGB(shader_id);
1571                                 break;
1572                         }
1573
1574                         command->frame->draw_texture();
1575                         if(shader) glUseProgram(0);
1576                         command->frame->set_opengl_state(VFrame::SCREEN);
1577                 }
1578         }
1579
1580         command->canvas->unlock_canvas();
1581 #endif // HAVE_GL
1582 }
1583
1584 void Playback3D::do_fade(Canvas *canvas, VFrame *frame, float fade)
1585 {
1586         Playback3DCommand command;
1587         command.command = Playback3DCommand::DO_FADE;
1588         command.canvas = canvas;
1589         command.frame = frame;
1590         command.alpha = fade;
1591         send_command(&command);
1592 }
1593
1594 void Playback3D::do_fade_sync(Playback3DCommand *command)
1595 {
1596 #ifdef HAVE_GL
1597         BC_WindowBase *window =
1598                 command->canvas->lock_canvas("Playback3D::do_fade_sync");
1599         if( window ) {
1600                 window->enable_opengl();
1601                 switch( command->frame->get_opengl_state() ) {
1602                 case VFrame::RAM:
1603                         command->frame->to_texture();
1604                         break;
1605
1606                 case VFrame::SCREEN:
1607 // Read back from PBuffer
1608 // Bind context to pbuffer
1609                         command->frame->enable_opengl();
1610                         command->frame->screen_to_texture();
1611                         break;
1612                 }
1613
1614                 command->frame->enable_opengl();
1615                 command->frame->init_screen();
1616                 command->frame->bind_texture(0);
1617
1618 //              glClearColor(0.0, 0.0, 0.0, 0.0);
1619 //              glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1620                 glDisable(GL_BLEND);
1621                 unsigned int frag_shader = 0;
1622                 switch(command->frame->get_color_model())
1623                 {
1624 // For the alpha colormodels, the native function seems to multiply the
1625 // components by the alpha instead of just the alpha.
1626                         case BC_RGBA8888:
1627                         case BC_RGBA_FLOAT:
1628                         case BC_YUVA8888:
1629                                 frag_shader = VFrame::make_shader(0, fade_rgba_frag, 0);
1630                                 break;
1631
1632                         case BC_RGB888:
1633                                 glEnable(GL_BLEND);
1634                                 glBlendFunc(GL_SRC_ALPHA, GL_ZERO);
1635                                 glColor4f(command->alpha, command->alpha, command->alpha, 1);
1636                                 break;
1637
1638
1639                         case BC_YUV888:
1640                                 frag_shader = VFrame::make_shader(0, fade_yuv_frag, 0);
1641                                 break;
1642                 }
1643
1644
1645                 if( frag_shader ) {
1646                         glUseProgram(frag_shader);
1647                         int variable;
1648                         if((variable = glGetUniformLocation(frag_shader, "tex")) >= 0)
1649                                 glUniform1i(variable, 0);
1650                         if((variable = glGetUniformLocation(frag_shader, "alpha")) >= 0)
1651                                 glUniform1f(variable, command->alpha);
1652                 }
1653
1654                 command->frame->draw_texture();
1655                 command->frame->set_opengl_state(VFrame::SCREEN);
1656
1657                 if(frag_shader)
1658                 {
1659                         glUseProgram(0);
1660                 }
1661
1662                 glColor4f(1, 1, 1, 1);
1663                 glDisable(GL_BLEND);
1664         }
1665         command->canvas->unlock_canvas();
1666 #endif
1667 }
1668
1669
1670 int Playback3D::run_plugin(Canvas *canvas, PluginClient *client)
1671 {
1672         Playback3DCommand command;
1673         command.command = Playback3DCommand::PLUGIN;
1674         command.canvas = canvas;
1675         command.plugin_client = client;
1676         return send_command(&command);
1677 }
1678
1679 void Playback3D::run_plugin_sync(Playback3DCommand *command)
1680 {
1681         BC_WindowBase *window =
1682                 command->canvas->lock_canvas("Playback3D::run_plugin_sync");
1683         if( window ) {
1684                 window->enable_opengl();
1685                 command->result = ((PluginVClient*)command->plugin_client)->handle_opengl();
1686         }
1687         command->canvas->unlock_canvas();
1688 }
1689
1690