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