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::CLEAR_OUTPUT:
 406                         clear_output_sync((Playback3DCommand*)command);
 407                         break;
 408
 409                 case Playback3DCommand::CLEAR_INPUT:
 410                         clear_input_sync((Playback3DCommand*)command);
 411                         break;
 412
 413                 case Playback3DCommand::DO_CAMERA:
 414                         do_camera_sync((Playback3DCommand*)command);
 415                         break;
 416
 417                 case Playback3DCommand::OVERLAY:
 418                         overlay_sync((Playback3DCommand*)command);
 419                         break;
 420
 421                 case Playback3DCommand::DO_FADE:
 422                         do_fade_sync((Playback3DCommand*)command);
 423                         break;
 424
 425                 case Playback3DCommand::DO_MASK:
 426                         do_mask_sync((Playback3DCommand*)command);
 427                         break;
 428
 429                 case Playback3DCommand::PLUGIN:
 430                         run_plugin_sync((Playback3DCommand*)command);
 431                         break;
 432
 433                 case Playback3DCommand::COPY_FROM:
 434                         copy_from_sync((Playback3DCommand*)command);
 435                         break;
 436
 437                 case Playback3DCommand::CONVERT_CMODEL:
 438                         convert_cmodel_sync((Playback3DCommand*)command);
 439                         break;
 440
 441 //              case Playback3DCommand::DRAW_REFRESH:
 442 //                      draw_refresh_sync((Playback3DCommand*)command);
 443 //                      break;
 444         }
 445 //printf("Playback3D::handle_command 10\n");
 446 }
 447
 448
 449
 450
 451 void Playback3D::copy_from(Canvas *canvas,
 452         VFrame *dst,
 453         VFrame *src,
 454         int want_texture)
 455 {
 456         Playback3DCommand command;
 457         command.command = Playback3DCommand::COPY_FROM;
 458         command.canvas = canvas;
 459         command.frame = dst;
 460         command.input = src;
 461         command.want_texture = want_texture;
 462         send_command(&command);
 463 }
 464
 465 void Playback3D::copy_from_sync(Playback3DCommand *command)
 466 {
 467 #ifdef HAVE_GL
 468         command->canvas->lock_canvas("Playback3D::draw_refresh_sync");
 469         BC_WindowBase *window = command->canvas->get_canvas();
 470         if(window)
 471         {
 472                 window->lock_window("Playback3D:draw_refresh_sync");
 473                 window->enable_opengl();
 474                 int w = command->input->get_w();
 475                 int h = command->input->get_h();
 476
 477                 if(command->input->get_opengl_state() == VFrame::SCREEN &&
 478                         w == command->frame->get_w() && h == command->frame->get_h())
 479                 {
 480 // printf("Playback3D::copy_from_sync 1 %d %d %d %d %d\n",
 481 // command->input->get_w(),
 482 // command->input->get_h(),
 483 // command->frame->get_w(),
 484 // command->frame->get_h(),
 485 // command->frame->get_color_model());
 486 // With NVidia at least,
 487                         if(w % 4)
 488                         {
 489                                 printf("Playback3D::copy_from_sync: w=%d not supported because it is not divisible by 4.\n", w);
 490                         }
 491                         else
 492 // Copy to texture
 493                         if(command->want_texture)
 494                         {
 495 //printf("Playback3D::copy_from_sync 1 dst=%p src=%p\n", command->frame, command->input);
 496 // Screen_to_texture requires the source pbuffer enabled.
 497                                 command->input->enable_opengl();
 498                                 command->frame->screen_to_texture();
 499                                 command->frame->set_opengl_state(VFrame::TEXTURE);
 500                         }
 501                         else
 502 // Copy to RAM
 503                         {
 504                                 command->input->to_texture();
 505                                 command->input->bind_texture(0);
 506                                 command->frame->enable_opengl();
 507                                 command->frame->init_screen();
 508                                 unsigned int shader = BC_CModels::is_yuv(command->input->get_color_model()) ?
 509                                         VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 510                                 if( shader > 0 ) {
 511                                         glUseProgram(shader);
 512                                         int variable = glGetUniformLocation(shader, "tex");
 513                                         glUniform1i(variable, 0);
 514                                         BC_GL_YUV_TO_RGB(shader);
 515                                 }
 516                                 else
 517                                         glUseProgram(0);
 518                                 command->input->draw_texture(1);
 519                                 command->frame->screen_to_ram();
 520                                 glUseProgram(0);
 521                         }
 522                 }
 523                 else
 524                 {
 525                         printf("Playback3D::copy_from_sync: invalid formats opengl_state=%d %dx%d -> %dx%d\n",
 526                                 command->input->get_opengl_state(), w, h,
 527                                 command->frame->get_w(), command->frame->get_h());
 528                 }
 529
 530                 window->unlock_window();
 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 //      command->canvas->lock_canvas("Playback3D::draw_refresh_sync");
 568 //      BC_WindowBase *window = command->canvas->get_canvas();
 569 //      if(window)
 570 //      {
 571 //              window->lock_window("Playback3D:draw_refresh_sync");
 572 //              window->enable_opengl();
 573 //
 574 // // Read output pbuffer back to RAM in project colormodel
 575 // // RGB 8bit is fastest for OpenGL to read back.
 576 //              command->frame->reallocate(0,
 577 //                      0,
 578 //                      0,
 579 //                      0,
 580 //                      command->frame->get_w(),
 581 //                      command->frame->get_h(),
 582 //                      BC_RGB888,
 583 //                      -1);
 584 //              command->frame->screen_to_ram();
 585 //
 586 //              window->clear_box(0,
 587 //                                              0,
 588 //                                              window->get_w(),
 589 //                                              window->get_h());
 590 //              window->draw_vframe(command->frame,
 591 //                                                      (int)command->out_x1,
 592 //                                                      (int)command->out_y1,
 593 //                                                      (int)(command->out_x2 - command->out_x1),
 594 //                                                      (int)(command->out_y2 - command->out_y1),
 595 //                                                      (int)command->in_x1,
 596 //                                                      (int)command->in_y1,
 597 //                                                      (int)(command->in_x2 - command->in_x1),
 598 //                                                      (int)(command->in_y2 - command->in_y1),
 599 //                                                      0);
 600 //
 601 //              window->unlock_window();
 602 //      }
 603 //      command->canvas->unlock_canvas();
 604 // }
 605
 606
 607
 608
 609
 610 void Playback3D::write_buffer(Canvas *canvas,
 611         VFrame *frame,
 612         float in_x1,
 613         float in_y1,
 614         float in_x2,
 615         float in_y2,
 616         float out_x1,
 617         float out_y1,
 618         float out_x2,
 619         float out_y2,
 620         int is_cleared)
 621 {
 622         Playback3DCommand command;
 623         command.command = Playback3DCommand::WRITE_BUFFER;
 624         command.canvas = canvas;
 625         command.frame = frame;
 626         command.in_x1 = in_x1;
 627         command.in_y1 = in_y1;
 628         command.in_x2 = in_x2;
 629         command.in_y2 = in_y2;
 630         command.out_x1 = out_x1;
 631         command.out_y1 = out_y1;
 632         command.out_x2 = out_x2;
 633         command.out_y2 = out_y2;
 634         command.is_cleared = is_cleared;
 635         send_command(&command);
 636 }
 637
 638
 639 void Playback3D::write_buffer_sync(Playback3DCommand *command)
 640 {
 641         command->canvas->lock_canvas("Playback3D::write_buffer_sync");
 642         if(command->canvas->get_canvas())
 643         {
 644                 BC_WindowBase *window = command->canvas->get_canvas();
 645                 window->lock_window("Playback3D::write_buffer_sync");
 646 // Update hidden cursor
 647                 window->update_video_cursor();
 648 // Make sure OpenGL is enabled first.
 649                 window->enable_opengl();
 650
 651 //printf("Playback3D::write_buffer_sync 1 %d\n", window->get_id());
 652                 int flip_y = 0, frame_state = command->frame->get_opengl_state();
 653                 switch( frame_state ) {
 654 // Upload texture and composite to screen
 655                         case VFrame::RAM:
 656                                 flip_y = 1;
 657                         case VFrame::SCREEN:
 658                                 command->frame->to_texture();
 659                                 window->enable_opengl();
 660 // Composite texture to screen and swap buffer
 661                         case VFrame::TEXTURE:
 662                                 if( !flip_y ) {
 663                                         int fh1 = command->frame->get_h()-1;
 664                                         float in_y1 = fh1 - command->in_y1;
 665                                         float in_y2 = fh1 - command->in_y2;
 666                                         command->in_y1 = in_y2;
 667                                         command->in_y2 = in_y1;
 668                                 }
 669                                 draw_output(command, flip_y);
 670                                 break;
 671                         default:
 672                                 printf("Playback3D::write_buffer_sync unknown state\n");
 673                                 break;
 674                 }
 675                 command->frame->set_opengl_state(frame_state);
 676                 window->unlock_window();
 677         }
 678
 679         command->canvas->unlock_canvas();
 680 }
 681
 682
 683
 684 void Playback3D::draw_output(Playback3DCommand *command, int flip_y)
 685 {
 686 #ifdef HAVE_GL
 687         int texture_id = command->frame->get_texture_id();
 688         BC_WindowBase *window = command->canvas->get_canvas();
 689
 690 // printf("Playback3D::draw_output 1 texture_id=%d window=%p\n",
 691 // texture_id,
 692 // command->canvas->get_canvas());
 693
 694
 695
 696
 697 // If virtual console is being used, everything in this function has
 698 // already been done except the page flip.
 699         if(texture_id >= 0)
 700         {
 701                 canvas_w = window->get_w();
 702                 canvas_h = window->get_h();
 703                 VFrame::init_screen(canvas_w, canvas_h);
 704                 int color_model = command->frame->get_color_model();
 705                 int is_yuv = BC_CModels::is_yuv(color_model);
 706
 707                 if(!command->is_cleared)
 708                 {
 709 // If we get here, the virtual console was not used.
 710                         init_frame(command, 0);
 711                 }
 712
 713 // Texture
 714 // Undo any previous shader settings
 715                 command->frame->bind_texture(0);
 716
 717 // Convert colormodel
 718                 unsigned int shader = is_yuv ? VFrame::make_shader(0, yuv_to_rgb_frag, 0) : 0;
 719                 if( shader > 0 ) {
 720                         glUseProgram(shader);
 721 // Set texture unit of the texture
 722                         int variable = glGetUniformLocation(shader, "tex");
 723                         glUniform1i(variable, 0);
 724                         BC_GL_YUV_TO_RGB(shader);
 725                 }
 726
 727 //              if(BC_CModels::components(color_model) == 4)
 728 //              {
 729 //                      glEnable(GL_BLEND);
 730 //                      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 731 //              }
 732
 733                 command->frame->draw_texture(
 734                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
 735                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
 736                         flip_y);
 737
 738
 739 //printf("Playback3D::draw_output 2 %f,%f %f,%f -> %f,%f %f,%f\n",
 740 // command->in_x1,
 741 // command->in_y1,
 742 // command->in_x2,
 743 // command->in_y2,
 744 // command->out_x1,
 745 // command->out_y1,
 746 // command->out_x2,
 747 // command->out_y2);
 748
 749                 glUseProgram(0);
 750
 751                 command->canvas->get_canvas()->flip_opengl();
 752
 753         }
 754 #endif
 755 }
 756
 757
 758 void Playback3D::init_frame(Playback3DCommand *command, int is_yuv)
 759 {
 760 #ifdef HAVE_GL
 761         float gbuv = is_yuv ? 0.5 : 0.0;
 762         glClearColor(0.0, gbuv, gbuv, 0.0);
 763         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 764 #endif
 765 }
 766
 767
 768 void Playback3D::clear_output(Canvas *canvas, VFrame *output)
 769 {
 770         Playback3DCommand command;
 771         command.command = Playback3DCommand::CLEAR_OUTPUT;
 772         command.canvas = canvas;
 773         command.frame = output;
 774         send_command(&command);
 775 }
 776
 777 void Playback3D::clear_output_sync(Playback3DCommand *command)
 778 {
 779         command->canvas->lock_canvas("Playback3D::clear_output_sync");
 780         if(command->canvas->get_canvas())
 781         {
 782                 command->canvas->get_canvas()->lock_window("Playback3D::clear_output_sync");
 783 // If we get here, the virtual console is being used.
 784                 command->canvas->get_canvas()->enable_opengl();
 785                 int is_yuv = 0;
 786
 787 // Using pbuffer for refresh frame.
 788                 if(command->frame)
 789                 {
 790                         command->frame->enable_opengl();
 791                         int color_model = command->canvas->mwindow->edl->session->color_model;
 792                         is_yuv = BC_CModels::is_yuv(color_model);
 793                 }
 794
 795                 init_frame(command, is_yuv);
 796                 command->canvas->get_canvas()->unlock_window();
 797         }
 798         command->canvas->unlock_canvas();
 799 }
 800
 801
 802 void Playback3D::clear_input(Canvas *canvas, VFrame *frame)
 803 {
 804         Playback3DCommand command;
 805         command.command = Playback3DCommand::CLEAR_INPUT;
 806         command.canvas = canvas;
 807         command.frame = frame;
 808         send_command(&command);
 809 }
 810
 811 void Playback3D::clear_input_sync(Playback3DCommand *command)
 812 {
 813         command->canvas->lock_canvas("Playback3D::clear_output_sync");
 814         if(command->canvas->get_canvas())
 815         {
 816                 command->canvas->get_canvas()->lock_window("Playback3D::clear_output_sync");
 817                 command->canvas->get_canvas()->enable_opengl();
 818                 command->frame->enable_opengl();
 819                 command->frame->clear_pbuffer();
 820                 command->frame->set_opengl_state(VFrame::SCREEN);
 821                 command->canvas->get_canvas()->unlock_window();
 822         }
 823         command->canvas->unlock_canvas();
 824 }
 825
 826 void Playback3D::do_camera(Canvas *canvas,
 827         VFrame *output,
 828         VFrame *input,
 829         float in_x1,
 830         float in_y1,
 831         float in_x2,
 832         float in_y2,
 833         float out_x1,
 834         float out_y1,
 835         float out_x2,
 836         float out_y2)
 837 {
 838         Playback3DCommand command;
 839         command.command = Playback3DCommand::DO_CAMERA;
 840         command.canvas = canvas;
 841         command.input = input;
 842         command.frame = output;
 843         command.in_x1 = in_x1;
 844         command.in_y1 = in_y1;
 845         command.in_x2 = in_x2;
 846         command.in_y2 = in_y2;
 847         command.out_x1 = out_x1;
 848         command.out_y1 = out_y1;
 849         command.out_x2 = out_x2;
 850         command.out_y2 = out_y2;
 851         send_command(&command);
 852 }
 853
 854 void Playback3D::do_camera_sync(Playback3DCommand *command)
 855 {
 856         command->canvas->lock_canvas("Playback3D::do_camera_sync");
 857         if(command->canvas->get_canvas())
 858         {
 859                 command->canvas->get_canvas()->lock_window("Playback3D::clear_output_sync");
 860                 command->canvas->get_canvas()->enable_opengl();
 861
 862                 command->input->to_texture();
 863                 command->frame->enable_opengl();
 864                 command->frame->init_screen();
 865                 command->frame->clear_pbuffer();
 866
 867                 command->input->bind_texture(0);
 868 // Must call draw_texture in input frame to get the texture coordinates right.
 869
 870 // printf("Playback3D::do_camera_sync 1 %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f\n",
 871 // command->in_x1,
 872 // command->in_y2,
 873 // command->in_x2,
 874 // command->in_y1,
 875 // command->out_x1,
 876 // (float)command->input->get_h() - command->out_y1,
 877 // command->out_x2,
 878 // (float)command->input->get_h() - command->out_y2);
 879                 command->input->draw_texture(
 880                         command->in_x1, command->in_y2,
 881                         command->in_x2, command->in_y1,
 882                         command->out_x1,
 883                         (float)command->frame->get_h() - command->out_y1,
 884                         command->out_x2,
 885                         (float)command->frame->get_h() - command->out_y2);
 886
 887
 888                 command->frame->set_opengl_state(VFrame::SCREEN);
 889                 command->frame->screen_to_ram();
 890                 command->canvas->get_canvas()->unlock_window();
 891         }
 892         command->canvas->unlock_canvas();
 893 }
 894
 895 void Playback3D::overlay(Canvas *canvas, VFrame *input,
 896         float in_x1, float in_y1, float in_x2, float in_y2,
 897         float out_x1, float out_y1, float out_x2, float out_y2,
 898         float alpha, int mode, int interpolation_type,
 899         VFrame *output, int is_nested)
 900 {
 901         Playback3DCommand command;
 902         command.command = Playback3DCommand::OVERLAY;
 903         command.canvas = canvas;
 904         command.frame = output;
 905         command.input = input;
 906         command.in_x1 = in_x1;
 907         command.in_y1 = in_y1;
 908         command.in_x2 = in_x2;
 909         command.in_y2 = in_y2;
 910         command.out_x1 = out_x1;
 911         command.out_y1 = out_y1;
 912         command.out_x2 = out_x2;
 913         command.out_y2 = out_y2;
 914         command.alpha = alpha;
 915         command.mode = mode;
 916         command.interpolation_type = interpolation_type;
 917         command.is_nested = is_nested;
 918         send_command(&command);
 919 }
 920
 921 void Playback3D::overlay_sync(Playback3DCommand *command)
 922 {
 923 #ifdef HAVE_GL
 924 // To do these operations, we need to copy the input buffer to a texture
 925 // and blend 2 textures in a shader
 926         static const char * const overlay_shaders[TRANSFER_TYPES] = {
 927                 blend_NORMAL_frag,      // TRANSFER_NORMAL
 928                 blend_ADDITION_frag,    // TRANSFER_ADDITION
 929                 blend_SUBTRACT_frag,    // TRANSFER_SUBTRACT
 930                 blend_MULTIPLY_frag,    // TRANSFER_MULTIPLY
 931                 blend_DIVIDE_frag,      // TRANSFER_DIVIDE
 932                 blend_REPLACE_frag,     // TRANSFER_REPLACE
 933                 blend_MAX_frag,         // TRANSFER_MAX
 934                 blend_MIN_frag,         // TRANSFER_MIN
 935                 blend_DARKEN_frag,      // TRANSFER_DARKEN
 936                 blend_LIGHTEN_frag,     // TRANSFER_LIGHTEN
 937                 blend_DST_frag,         // TRANSFER_DST
 938                 blend_DST_ATOP_frag,    // TRANSFER_DST_ATOP
 939                 blend_DST_IN_frag,      // TRANSFER_DST_IN
 940                 blend_DST_OUT_frag,     // TRANSFER_DST_OUT
 941                 blend_DST_OVER_frag,    // TRANSFER_DST_OVER
 942                 blend_SRC_frag,         // TRANSFER_SRC
 943                 blend_SRC_ATOP_frag,    // TRANSFER_SRC_ATOP
 944                 blend_SRC_IN_frag,      // TRANSFER_SRC_IN
 945                 blend_SRC_OUT_frag,     // TRANSFER_SRC_OUT
 946                 blend_SRC_OVER_frag,    // TRANSFER_SRC_OVER
 947                 blend_AND_frag,         // TRANSFER_AND
 948                 blend_OR_frag,          // TRANSFER_OR
 949                 blend_XOR_frag,         // TRANSFER_XOR
 950                 blend_OVERLAY_frag,     // TRANSFER_OVERLAY
 951                 blend_SCREEN_frag,      // TRANSFER_SCREEN
 952                 blend_BURN_frag,        // TRANSFER_BURN
 953                 blend_DODGE_frag,       // TRANSFER_DODGE
 954                 blend_HARDLIGHT_frag,   // TRANSFER_HARDLIGHT
 955                 blend_SOFTLIGHT_frag,   // TRANSFER_SOFTLIGHT
 956                 blend_DIFFERENCE_frag,  // TRANSFER_DIFFERENCE
 957         };
 958
 959         command->canvas->lock_canvas("Playback3D::overlay_sync");
 960         if(command->canvas->get_canvas()) {
 961                 BC_WindowBase *window = command->canvas->get_canvas();
 962                 window->lock_window("Playback3D::overlay_sync");
 963 // Make sure OpenGL is enabled first.
 964                 window->enable_opengl();
 965                 window->update_video_cursor();
 966
 967                 glColor4f(1, 1, 1, 1);
 968                 glDisable(GL_BLEND);
 969
 970
 971 //printf("Playback3D::overlay_sync 1 %d\n", command->input->get_opengl_state());
 972                 switch( command->input->get_opengl_state() ) {
 973 // Upload texture and composite to screen
 974                 case VFrame::RAM:
 975                         command->input->to_texture();
 976                         break;
 977 // Just composite texture to screen
 978                 case VFrame::TEXTURE:
 979                         break;
 980 // read from PBuffer to texture, then composite texture to screen
 981                 case VFrame::SCREEN:
 982                         command->input->enable_opengl();
 983                         command->input->screen_to_texture();
 984                         break;
 985                 default:
 986                         printf("Playback3D::overlay_sync unknown state\n");
 987                         break;
 988                 }
 989
 990                 if(command->frame) {
 991 // Render to PBuffer
 992                         command->frame->enable_opengl();
 993                         command->frame->set_opengl_state(VFrame::SCREEN);
 994                         canvas_w = command->frame->get_w();
 995                         canvas_h = command->frame->get_h();
 996                 }
 997                 else {
 998 // Render to canvas
 999                         window->enable_opengl();
1000                         canvas_w = window->get_w();
1001                         canvas_h = window->get_h();
1002                 }
1003
1004
1005                 const char *shader_stack[16];
1006                 memset(shader_stack,0, sizeof(shader_stack));
1007                 int total_shaders = 0, need_matrix = 0;
1008
1009                 VFrame::init_screen(canvas_w, canvas_h);
1010
1011 // Enable texture
1012                 command->input->bind_texture(0);
1013
1014 // Convert colormodel to RGB if not nested.
1015 // The color model setting in the output frame is ignored.
1016 //              if( command->is_nested <= 0 &&  // not nested
1017 //                  BC_CModels::is_yuv(command->input->get_color_model()) ) {
1018 //                      need_matrix = 1;
1019 //                      shader_stack[total_shaders++] = yuv_to_rgb_frag;
1020 //              }
1021
1022 // get the shaders
1023 #define add_shader(s) \
1024   if(!total_shaders) shader_stack[total_shaders++] = read_texture_frag; \
1025   shader_stack[total_shaders++] = s
1026
1027                 switch(command->mode) {
1028                 case TRANSFER_REPLACE:
1029 // This requires overlaying an alpha multiplied image on a black screen.
1030                         if( command->input->get_texture_components() != 4 ) break;
1031                         add_shader(overlay_shaders[command->mode]);
1032                         break;
1033                 default:
1034                         enable_overlay_texture(command);
1035                         add_shader(overlay_shaders[command->mode]);
1036                         break;
1037                 }
1038
1039 // if to flatten alpha
1040 //              if( command->is_nested < 0 ) {
1041 //                      switch(command->input->get_color_model()) {
1042 //// yuv has already been converted to rgb
1043 //                      case BC_YUVA8888:
1044 //                      case BC_RGBA_FLOAT:
1045 //                      case BC_RGBA8888:
1046 //                              add_shader(rgba_to_rgb_flatten);
1047 //                              break;
1048 //                      }
1049 //              }
1050
1051 // run the shaders
1052                 add_shader(0);
1053                 unsigned int shader = !shader_stack[0] ? 0 :
1054                         VFrame::make_shader(shader_stack);
1055                 if( shader > 0 ) {
1056                         glUseProgram(shader);
1057                         if( need_matrix ) BC_GL_YUV_TO_RGB(shader);
1058 // Set texture unit of the texture
1059                         glUniform1i(glGetUniformLocation(shader, "tex"), 0);
1060 // Set texture unit of the temp texture
1061                         glUniform1i(glGetUniformLocation(shader, "tex2"), 1);
1062 // Set alpha
1063                         int variable = glGetUniformLocation(shader, "alpha");
1064                         glUniform1f(variable, command->alpha);
1065 // Set dimensions of the temp texture
1066                         if(temp_texture)
1067                                 glUniform2f(glGetUniformLocation(shader, "tex2_dimensions"),
1068                                         (float)temp_texture->get_texture_w(),
1069                                         (float)temp_texture->get_texture_h());
1070                 }
1071                 else
1072                         glUseProgram(0);
1073
1074
1075 //printf("Playback3D::overlay_sync %f %f %f %f %f %f %f %f\n",
1076 // command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1077 // command->out_x1, command->out_y1, command->out_x2, command->out_y2);
1078
1079                 command->input->draw_texture(
1080                         command->in_x1, command->in_y1, command->in_x2, command->in_y2,
1081                         command->out_x1, command->out_y1, command->out_x2, command->out_y2,
1082                         !command->is_nested);
1083                 glUseProgram(0);
1084
1085 // Delete temp texture
1086                 if(temp_texture) {
1087                         delete temp_texture;
1088                         temp_texture = 0;
1089                         glActiveTexture(GL_TEXTURE1);
1090                         glDisable(GL_TEXTURE_2D);
1091                 }
1092                 glActiveTexture(GL_TEXTURE0);
1093                 glDisable(GL_TEXTURE_2D);
1094
1095                 window->unlock_window();
1096         }
1097         command->canvas->unlock_canvas();
1098 #endif
1099 }
1100
1101 void Playback3D::enable_overlay_texture(Playback3DCommand *command)
1102 {
1103 #ifdef HAVE_GL
1104         glDisable(GL_BLEND);
1105
1106         glActiveTexture(GL_TEXTURE1);
1107         BC_Texture::new_texture(&temp_texture, canvas_w, canvas_h,
1108                 command->input->get_color_model());
1109         temp_texture->bind(1);
1110
1111 // Read canvas into texture
1112         glReadBuffer(GL_BACK);
1113         glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, canvas_w, canvas_h);
1114 #endif
1115 }
1116
1117
1118 void Playback3D::do_mask(Canvas *canvas,
1119         VFrame *output,
1120         int64_t start_position_project,
1121         MaskAutos *keyframe_set,
1122         MaskAuto *keyframe,
1123         MaskAuto *default_auto)
1124 {
1125         Playback3DCommand command;
1126         command.command = Playback3DCommand::DO_MASK;
1127         command.canvas = canvas;
1128         command.frame = output;
1129         command.start_position_project = start_position_project;
1130         command.keyframe_set = keyframe_set;
1131         command.keyframe = keyframe;
1132         command.default_auto = default_auto;
1133
1134         send_command(&command);
1135 }
1136
1137
1138
1139 #ifdef HAVE_GL
1140 struct Vertex : ListItem<Vertex>
1141 {
1142         GLdouble c[3];
1143 };
1144 // this list is only used from the main thread, no locking needed
1145 // this must be a list so that pointers to allocated entries remain valid
1146 // when new entries are added
1147 static List<Vertex> *vertex_cache = 0;
1148
1149 static void combine_callback(GLdouble coords[3],
1150         GLdouble *vertex_data[4],
1151         GLfloat weight[4],
1152         GLdouble **dataOut)
1153 {
1154 // can't use malloc here; GLU doesn't delete the memory for us!
1155         Vertex* vertex = vertex_cache->append();
1156         vertex->c[0] = coords[0];
1157         vertex->c[1] = coords[1];
1158         vertex->c[2] = coords[2];
1159 // we don't need to interpolate anything
1160
1161         *dataOut = &vertex->c[0];
1162 }
1163 #endif
1164
1165
1166 void Playback3D::do_mask_sync(Playback3DCommand *command)
1167 {
1168 #ifdef HAVE_GL
1169         command->canvas->lock_canvas("Playback3D::do_mask_sync");
1170         if(command->canvas->get_canvas())
1171         {
1172                 BC_WindowBase *window = command->canvas->get_canvas();
1173                 window->lock_window("Playback3D::do_mask_sync");
1174                 window->enable_opengl();
1175
1176                 switch(command->frame->get_opengl_state())
1177                 {
1178                         case VFrame::RAM:
1179 // Time to upload to the texture
1180                                 command->frame->to_texture();
1181                                 break;
1182
1183                         case VFrame::SCREEN:
1184 // Read back from PBuffer
1185 // Bind context to pbuffer
1186                                 command->frame->enable_opengl();
1187                                 command->frame->screen_to_texture();
1188                                 break;
1189                 }
1190
1191
1192
1193 // Create PBuffer and draw the mask on it
1194                 command->frame->enable_opengl();
1195
1196 // Initialize coordinate system
1197                 int w = command->frame->get_w();
1198                 int h = command->frame->get_h();
1199                 command->frame->init_screen();
1200
1201 // Clear screen
1202                 glDisable(GL_TEXTURE_2D);
1203                 if(command->default_auto->mode == MASK_MULTIPLY_ALPHA)
1204                 {
1205                         glClearColor(0.0, 0.0, 0.0, 0.0);
1206                         glColor4f((float)command->keyframe->value / 100,
1207                                 (float)command->keyframe->value / 100,
1208                                 (float)command->keyframe->value / 100,
1209                                 1.0);
1210                 }
1211                 else
1212                 {
1213                         glClearColor(1.0, 1.0, 1.0, 1.0);
1214                         glColor4f((float)1.0 - (float)command->keyframe->value / 100,
1215                                 (float)1.0 - (float)command->keyframe->value / 100,
1216                                 (float)1.0 - (float)command->keyframe->value / 100,
1217                                 1.0);
1218                 }
1219                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1220
1221
1222 // Draw mask with scaling to simulate feathering
1223                 GLUtesselator *tesselator = gluNewTess();
1224                 gluTessProperty(tesselator, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
1225                 gluTessCallback(tesselator, GLU_TESS_VERTEX, (GLvoid (*) ( )) &glVertex3dv);
1226                 gluTessCallback(tesselator, GLU_TESS_BEGIN, (GLvoid (*) ( )) &glBegin);
1227                 gluTessCallback(tesselator, GLU_TESS_END, (GLvoid (*) ( )) &glEnd);
1228                 gluTessCallback(tesselator, GLU_TESS_COMBINE, (GLvoid (*) ( ))&combine_callback);
1229
1230                 vertex_cache = new List<Vertex>;
1231
1232
1233 // Draw every submask as a new polygon
1234                 int total_submasks = command->keyframe_set->total_submasks(
1235                         command->start_position_project,
1236                         PLAY_FORWARD);
1237                 float scale = command->keyframe->feather + 1;
1238                 int display_list = glGenLists(1);
1239                 glNewList(display_list, GL_COMPILE);
1240                 for(int k = 0; k < total_submasks; k++)
1241                 {
1242                         gluTessBeginPolygon(tesselator, NULL);
1243                         gluTessBeginContour(tesselator);
1244                         ArrayList<MaskPoint*> *points = new ArrayList<MaskPoint*>;
1245                         command->keyframe_set->get_points(points,
1246                                 k,
1247                                 command->start_position_project,
1248                                 PLAY_FORWARD);
1249
1250                         int first_point = 0;
1251 // Need to tabulate every vertex in persistent memory because
1252 // gluTessVertex doesn't copy them.
1253                         ArrayList<GLdouble*> coords;
1254                         coords.set_array_delete();
1255                         for(int i = 0; i < points->total; i++)
1256                         {
1257                                 MaskPoint *point1 = points->values[i];
1258                                 MaskPoint *point2 = (i >= points->total - 1) ?
1259                                         points->values[0] :
1260                                         points->values[i + 1];
1261
1262                                 float x, y;
1263                                 int segments = 0;
1264                                 if(point1->control_x2 == 0 &&
1265                                         point1->control_y2 == 0 &&
1266                                         point2->control_x1 == 0 &&
1267                                         point2->control_y1 == 0)
1268                                         segments = 1;
1269
1270                                 float x0 = point1->x;
1271                                 float y0 = point1->y;
1272                                 float x1 = point1->x + point1->control_x2;
1273                                 float y1 = point1->y + point1->control_y2;
1274                                 float x2 = point2->x + point2->control_x1;
1275                                 float y2 = point2->y + point2->control_y1;
1276                                 float x3 = point2->x;
1277                                 float y3 = point2->y;
1278
1279                                 // forward differencing bezier curves implementation taken from GPL code at
1280                                 // http://cvs.sourceforge.net/viewcvs.py/guliverkli/guliverkli/src/subtitles/Rasterizer.cpp?rev=1.3
1281
1282                                 float cx3, cx2, cx1, cx0, cy3, cy2, cy1, cy0;
1283
1284                                 // [-1 +3 -3 +1]
1285                                 // [+3 -6 +3  0]
1286                                 // [-3 +3  0  0]
1287                                 // [+1  0  0  0]
1288
1289                                 cx3 = -  x0 + 3*x1 - 3*x2 + x3;
1290                                 cx2 =  3*x0 - 6*x1 + 3*x2;
1291                                 cx1 = -3*x0 + 3*x1;
1292                                 cx0 =    x0;
1293
1294                                 cy3 = -  y0 + 3*y1 - 3*y2 + y3;
1295                                 cy2 =  3*y0 - 6*y1 + 3*y2;
1296                                 cy1 = -3*y0 + 3*y1;
1297                                 cy0 =    y0;
1298
1299                                 // This equation is from Graphics Gems I.
1300                                 //
1301                                 // The idea is that since we're approximating a cubic curve with lines,
1302                                 // any error we incur is due to the curvature of the line, which we can
1303                                 // estimate by calculating the maximum acceleration of the curve.  For
1304                                 // a cubic, the acceleration (second derivative) is a line, meaning that
1305                                 // the absolute maximum acceleration must occur at either the beginning
1306                                 // (|c2|) or the end (|c2+c3|).  Our bounds here are a little more
1307                                 // conservative than that, but that's okay.
1308                                 if (segments == 0)
1309                                 {
1310                                         float maxaccel1 = fabs(2*cy2) + fabs(6*cy3);
1311                                         float maxaccel2 = fabs(2*cx2) + fabs(6*cx3);
1312
1313                                         float maxaccel = maxaccel1 > maxaccel2 ? maxaccel1 : maxaccel2;
1314                                         float h = 1.0;
1315
1316                                         if(maxaccel > 8.0) h = sqrt((8.0) / maxaccel);
1317                                         segments = int(1/h);
1318                                 }
1319
1320                                 for(int j = 0; j <= segments; j++)
1321                                 {
1322                                         float t = (float)j / segments;
1323                                         x = cx0 + t*(cx1 + t*(cx2 + t*cx3));
1324                                         y = cy0 + t*(cy1 + t*(cy2 + t*cy3));
1325
1326                                         if(j > 0 || first_point)
1327                                         {
1328                                                 GLdouble *coord = new GLdouble[3];
1329                                                 coord[0] = x / scale;
1330                                                 coord[1] = -h + y / scale;
1331                                                 coord[2] = 0;
1332                                                 coords.append(coord);
1333                                                 first_point = 0;
1334                                         }
1335                                 }
1336                         }
1337
1338 // Now that we know the total vertices, send them to GLU
1339                         for(int i = 0; i < coords.total; i++)
1340                                 gluTessVertex(tesselator, coords.values[i], coords.values[i]);
1341
1342                         gluTessEndContour(tesselator);
1343                         gluTessEndPolygon(tesselator);
1344                         points->remove_all_objects();
1345                         delete points;
1346                         coords.remove_all_objects();
1347                 }
1348                 glEndList();
1349                 glCallList(display_list);
1350                 glDeleteLists(display_list, 1);
1351                 gluDeleteTess(tesselator);
1352
1353                 delete vertex_cache;
1354                 vertex_cache = 0;
1355
1356                 glColor4f(1, 1, 1, 1);
1357
1358
1359 // Read mask into temporary texture.
1360 // For feathering, just read the part of the screen after the downscaling.
1361
1362
1363                 float w_scaled = w / scale;
1364                 float h_scaled = h / scale;
1365 // Don't vary the texture size according to scaling because that
1366 // would waste memory.
1367 // This enables and binds the temporary texture.
1368                 glActiveTexture(GL_TEXTURE1);
1369                 BC_Texture::new_texture(&temp_texture,
1370                         w,
1371                         h,
1372                         command->frame->get_color_model());
1373                 temp_texture->bind(1);
1374                 glReadBuffer(GL_BACK);
1375
1376 // Need to add extra size to fill in the bottom right
1377                 glCopyTexSubImage2D(GL_TEXTURE_2D,
1378                         0,
1379                         0,
1380                         0,
1381                         0,
1382                         0,
1383                         (int)MIN(w_scaled + 2, w),
1384                         (int)MIN(h_scaled + 2, h));
1385
1386                 command->frame->bind_texture(0);
1387
1388
1389 // For feathered masks, use a shader to multiply.
1390 // For unfeathered masks, we could use a stencil buffer
1391 // for further optimization but we also need a YUV algorithm.
1392                 unsigned int frag_shader = 0;
1393                 switch(temp_texture->get_texture_components()) {
1394                 case 3:
1395                         frag_shader = VFrame::make_shader(0,
1396                                 command->frame->get_color_model() == BC_YUV888 ?
1397                                         multiply_yuvmask3_frag : multiply_mask3_frag,
1398                                 0);
1399                         break;
1400                 case 4:
1401                         frag_shader = VFrame::make_shader(0, multiply_mask4_frag, 0);
1402                         break;
1403                 }
1404
1405                 if( frag_shader ) {
1406                         int variable;
1407                         glUseProgram(frag_shader);
1408                         if((variable = glGetUniformLocation(frag_shader, "tex")) >= 0)
1409                                 glUniform1i(variable, 0);
1410                         if((variable = glGetUniformLocation(frag_shader, "tex1")) >= 0)
1411                                 glUniform1i(variable, 1);
1412                         if((variable = glGetUniformLocation(frag_shader, "scale")) >= 0)
1413                                 glUniform1f(variable, scale);
1414                 }
1415
1416
1417
1418 // Write texture to PBuffer with multiply and scaling for feather.
1419
1420
1421                 command->frame->draw_texture(0, 0, w, h, 0, 0, w, h);
1422                 command->frame->set_opengl_state(VFrame::SCREEN);
1423
1424
1425 // Disable temp texture
1426                 glUseProgram(0);
1427
1428                 glActiveTexture(GL_TEXTURE1);
1429                 glDisable(GL_TEXTURE_2D);
1430                 delete temp_texture;
1431                 temp_texture = 0;
1432
1433                 glActiveTexture(GL_TEXTURE0);
1434                 glDisable(GL_TEXTURE_2D);
1435
1436 // Default drawable
1437                 window->enable_opengl();
1438                 window->unlock_window();
1439         }
1440         command->canvas->unlock_canvas();
1441 #endif
1442 }
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453 void Playback3D::convert_cmodel(Canvas *canvas,
1454         VFrame *output,
1455         int dst_cmodel)
1456 {
1457 // Do nothing if colormodels are equivalent in OpenGL & the image is in hardware.
1458         int src_cmodel = output->get_color_model();
1459         if(
1460                 (output->get_opengl_state() == VFrame::TEXTURE ||
1461                 output->get_opengl_state() == VFrame::SCREEN) &&
1462 // OpenGL has no floating point.
1463                 ( (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGB_FLOAT) ||
1464                   (src_cmodel == BC_RGBA8888 && dst_cmodel == BC_RGBA_FLOAT) ||
1465                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGB888) ||
1466                   (src_cmodel == BC_RGBA_FLOAT && dst_cmodel == BC_RGBA8888) ||
1467 // OpenGL sets alpha to 1 on import
1468                   (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGBA8888) ||
1469                   (src_cmodel == BC_YUV888 && dst_cmodel == BC_YUVA8888) ||
1470                   (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGBA_FLOAT) )
1471                 ) return;
1472
1473
1474
1475         Playback3DCommand command;
1476         command.command = Playback3DCommand::CONVERT_CMODEL;
1477         command.canvas = canvas;
1478         command.frame = output;
1479         command.dst_cmodel = dst_cmodel;
1480         send_command(&command);
1481 }
1482
1483 void Playback3D::convert_cmodel_sync(Playback3DCommand *command)
1484 {
1485 #ifdef HAVE_GL
1486         command->canvas->lock_canvas("Playback3D::convert_cmodel_sync");
1487
1488         if( command->canvas->get_canvas() ) {
1489                 BC_WindowBase *window = command->canvas->get_canvas();
1490                 window->lock_window("Playback3D::convert_cmodel_sync");
1491                 window->enable_opengl();
1492
1493 // Import into hardware
1494                 command->frame->enable_opengl();
1495                 command->frame->init_screen();
1496                 command->frame->to_texture();
1497
1498 // Colormodel permutation
1499                 int src_cmodel = command->frame->get_color_model();
1500                 int dst_cmodel = command->dst_cmodel;
1501                 typedef struct {
1502                         int src, dst, typ;
1503                         const char *shader;
1504                 } cmodel_shader_table_t;
1505                 enum { rgb_to_rgb, rgb_to_yuv, yuv_to_rgb, yuv_to_yuv, };
1506                 int type = -1;
1507                 static cmodel_shader_table_t cmodel_shader_table[]  = {
1508                         { BC_RGB888,    BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1509                         { BC_RGB888,    BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1510                         { BC_RGBA8888,  BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1511                         { BC_RGBA8888,  BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1512                         { BC_RGBA8888,  BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1513                         { BC_RGBA8888,  BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1514                         { BC_RGB_FLOAT, BC_YUV888,      rgb_to_yuv, rgb_to_yuv_frag  },
1515                         { BC_RGB_FLOAT, BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1516                         { BC_RGBA_FLOAT,BC_RGB888,      rgb_to_rgb, rgba_to_rgb_frag },
1517                         { BC_RGBA_FLOAT,BC_RGB_FLOAT,   rgb_to_rgb, rgba_to_rgb_frag },
1518                         { BC_RGBA_FLOAT,BC_YUV888,      rgb_to_yuv, rgba_to_yuv_frag },
1519                         { BC_RGBA_FLOAT,BC_YUVA8888,    rgb_to_yuv, rgb_to_yuv_frag  },
1520                         { BC_YUV888,    BC_RGB888,      yuv_to_rgb, yuv_to_rgb_frag  },
1521                         { BC_YUV888,    BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1522                         { BC_YUV888,    BC_RGB_FLOAT,   yuv_to_rgb, yuv_to_rgb_frag  },
1523                         { BC_YUV888,    BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1524                         { BC_YUVA8888,  BC_RGB888,      yuv_to_rgb, yuva_to_rgb_frag },
1525                         { BC_YUVA8888,  BC_RGBA8888,    yuv_to_rgb, yuv_to_rgb_frag  },
1526                         { BC_YUVA8888,  BC_RGB_FLOAT,   yuv_to_rgb, yuva_to_rgb_frag },
1527                         { BC_YUVA8888,  BC_RGBA_FLOAT,  yuv_to_rgb, yuv_to_rgb_frag  },
1528                         { BC_YUVA8888,  BC_YUV888,      yuv_to_yuv, yuva_to_yuv_frag },
1529                 };
1530
1531                 const char *shader = 0;
1532                 int table_size = sizeof(cmodel_shader_table) / sizeof(cmodel_shader_table_t);
1533                 for( int i=0; i<table_size; ++i ) {
1534                         if( cmodel_shader_table[i].src == src_cmodel &&
1535                             cmodel_shader_table[i].dst == dst_cmodel ) {
1536                                 shader = cmodel_shader_table[i].shader;
1537                                 type = cmodel_shader_table[i].typ;
1538                                 break;
1539                         }
1540                 }
1541
1542 // printf("Playback3D::convert_cmodel_sync %d %d %d shader=\n%s",
1543 // __LINE__,
1544 // command->frame->get_color_model(),
1545 // command->dst_cmodel,
1546 // shader);
1547
1548                 const char *shader_stack[9];
1549                 memset(shader_stack,0, sizeof(shader_stack));
1550                 int current_shader = 0;
1551
1552                 if( shader ) {
1553 //printf("Playback3D::convert_cmodel_sync %d\n", __LINE__);
1554                         shader_stack[current_shader++] = shader;
1555                         shader_stack[current_shader] = 0;
1556                         unsigned int shader_id = VFrame::make_shader(shader_stack);
1557
1558                         command->frame->bind_texture(0);
1559                         glUseProgram(shader_id);
1560
1561                         glUniform1i(glGetUniformLocation(shader_id, "tex"), 0);
1562                         switch( type ) {
1563                         case rgb_to_yuv:
1564                                 BC_GL_RGB_TO_YUV(shader_id);
1565                                 break;
1566                         case yuv_to_rgb:
1567                                 BC_GL_YUV_TO_RGB(shader_id);
1568                                 break;
1569                         }
1570
1571                         command->frame->draw_texture();
1572                         if(shader) glUseProgram(0);
1573                         command->frame->set_opengl_state(VFrame::SCREEN);
1574                 }
1575
1576                 window->unlock_window();
1577         }
1578
1579         command->canvas->unlock_canvas();
1580 #endif // HAVE_GL
1581 }
1582
1583 void Playback3D::do_fade(Canvas *canvas, VFrame *frame, float fade)
1584 {
1585         Playback3DCommand command;
1586         command.command = Playback3DCommand::DO_FADE;
1587         command.canvas = canvas;
1588         command.frame = frame;
1589         command.alpha = fade;
1590         send_command(&command);
1591 }
1592
1593 void Playback3D::do_fade_sync(Playback3DCommand *command)
1594 {
1595 #ifdef HAVE_GL
1596         command->canvas->lock_canvas("Playback3D::do_mask_sync");
1597         if(command->canvas->get_canvas())
1598         {
1599                 BC_WindowBase *window = command->canvas->get_canvas();
1600                 window->lock_window("Playback3D::do_fade_sync");
1601                 window->enable_opengl();
1602
1603                 switch(command->frame->get_opengl_state())
1604                 {
1605                         case VFrame::RAM:
1606                                 command->frame->to_texture();
1607                                 break;
1608
1609                         case VFrame::SCREEN:
1610 // Read back from PBuffer
1611 // Bind context to pbuffer
1612                                 command->frame->enable_opengl();
1613                                 command->frame->screen_to_texture();
1614                                 break;
1615                 }
1616
1617
1618                 command->frame->enable_opengl();
1619                 command->frame->init_screen();
1620                 command->frame->bind_texture(0);
1621
1622 //              glClearColor(0.0, 0.0, 0.0, 0.0);
1623 //              glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1624                 glDisable(GL_BLEND);
1625                 unsigned int frag_shader = 0;
1626                 switch(command->frame->get_color_model())
1627                 {
1628 // For the alpha colormodels, the native function seems to multiply the
1629 // components by the alpha instead of just the alpha.
1630                         case BC_RGBA8888:
1631                         case BC_RGBA_FLOAT:
1632                         case BC_YUVA8888:
1633                                 frag_shader = VFrame::make_shader(0, fade_rgba_frag, 0);
1634                                 break;
1635
1636                         case BC_RGB888:
1637                                 glEnable(GL_BLEND);
1638                                 glBlendFunc(GL_SRC_ALPHA, GL_ZERO);
1639                                 glColor4f(command->alpha, command->alpha, command->alpha, 1);
1640                                 break;
1641
1642
1643                         case BC_YUV888:
1644                                 frag_shader = VFrame::make_shader(0, fade_yuv_frag, 0);
1645                                 break;
1646                 }
1647
1648
1649                 if( frag_shader ) {
1650                         glUseProgram(frag_shader);
1651                         int variable;
1652                         if((variable = glGetUniformLocation(frag_shader, "tex")) >= 0)
1653                                 glUniform1i(variable, 0);
1654                         if((variable = glGetUniformLocation(frag_shader, "alpha")) >= 0)
1655                                 glUniform1f(variable, command->alpha);
1656                 }
1657
1658                 command->frame->draw_texture();
1659                 command->frame->set_opengl_state(VFrame::SCREEN);
1660
1661                 if(frag_shader)
1662                 {
1663                         glUseProgram(0);
1664                 }
1665
1666                 glColor4f(1, 1, 1, 1);
1667                 glDisable(GL_BLEND);
1668
1669                 window->unlock_window();
1670         }
1671         command->canvas->unlock_canvas();
1672 #endif
1673 }
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685 int Playback3D::run_plugin(Canvas *canvas, PluginClient *client)
1686 {
1687         Playback3DCommand command;
1688         command.command = Playback3DCommand::PLUGIN;
1689         command.canvas = canvas;
1690         command.plugin_client = client;
1691         return send_command(&command);
1692 }
1693
1694 void Playback3D::run_plugin_sync(Playback3DCommand *command)
1695 {
1696         command->canvas->lock_canvas("Playback3D::run_plugin_sync");
1697         if(command->canvas->get_canvas())
1698         {
1699                 BC_WindowBase *window = command->canvas->get_canvas();
1700                 window->lock_window("Playback3D::run_plugin_sync");
1701                 window->enable_opengl();
1702
1703                 command->result = ((PluginVClient*)command->plugin_client)->handle_opengl();
1704
1705                 window->unlock_window();
1706         }
1707         command->canvas->unlock_canvas();
1708 }
1709
1710