cinelerra-5.1/plugins/freezeframe/freezeframe.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 1997-2012 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "bcdisplayinfo.h"
  23 #include "bchash.h"
  24 #include "filexml.h"
  25 #include "freezeframe.h"
  26 #include "language.h"
  27 #include "transportque.inc"
  28
  29
  30
  31 #include <string.h>
  32
  33
  34 REGISTER_PLUGIN(FreezeFrameMain)
  35
  36
  37
  38
  39
  40 FreezeFrameConfig::FreezeFrameConfig()
  41 {
  42         enabled = 0;
  43         line_double = 0;
  44 }
  45
  46 void FreezeFrameConfig::copy_from(FreezeFrameConfig &that)
  47 {
  48         enabled = that.enabled;
  49         line_double = that.line_double;
  50 }
  51
  52 int FreezeFrameConfig::equivalent(FreezeFrameConfig &that)
  53 {
  54         return enabled == that.enabled &&
  55                 line_double == that.line_double;
  56 }
  57
  58 void FreezeFrameConfig::interpolate(FreezeFrameConfig &prev,
  59         FreezeFrameConfig &next,
  60         long prev_frame,
  61         long next_frame,
  62         long current_frame)
  63 {
  64         this->enabled = prev.enabled;
  65         this->line_double = prev.line_double;
  66 }
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77 FreezeFrameWindow::FreezeFrameWindow(FreezeFrameMain *client)
  78  : PluginClientWindow(client, 260, 100, 260, 100, 0)
  79 {
  80         this->client = client;
  81 }
  82
  83 FreezeFrameWindow::~FreezeFrameWindow()
  84 {
  85 }
  86
  87 void FreezeFrameWindow::create_objects()
  88 {
  89         int x = 10, y = 10;
  90         add_tool(enabled = new FreezeFrameToggle(client,
  91                 &client->config.enabled,
  92                 x,
  93                 y,
  94                 _("Enabled")));
  95 // Try using extra effect for the line double since it doesn't
  96 // change the overhead.
  97 //      y += 30;
  98 //      add_tool(line_double = new FreezeFrameToggle(client,
  99 //              &client->config.line_double,
 100 //              x,
 101 //              y,
 102 //              _("Line double")));
 103         show_window();
 104         flush();
 105 }
 106
 107
 108
 109
 110
 111
 112 FreezeFrameToggle::FreezeFrameToggle(FreezeFrameMain *client,
 113         int *value,
 114         int x,
 115         int y,
 116         char *text)
 117  : BC_CheckBox(x, y, *value, text)
 118 {
 119         this->client = client;
 120         this->value = value;
 121 }
 122 FreezeFrameToggle::~FreezeFrameToggle()
 123 {
 124 }
 125 int FreezeFrameToggle::handle_event()
 126 {
 127         *value = get_value();
 128         client->send_configure_change();
 129         return 1;
 130 }
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143 FreezeFrameMain::FreezeFrameMain(PluginServer *server)
 144  : PluginVClient(server)
 145 {
 146
 147         first_frame = 0;
 148         first_frame_position = -1;
 149 }
 150
 151 FreezeFrameMain::~FreezeFrameMain()
 152 {
 153
 154         if(first_frame) delete first_frame;
 155 }
 156
 157 const char* FreezeFrameMain::plugin_title() { return _("Freeze Frame"); }
 158 int FreezeFrameMain::is_synthesis() { return 1; }
 159 int FreezeFrameMain::is_realtime() { return 1; }
 160
 161
 162 NEW_WINDOW_MACRO(FreezeFrameMain, FreezeFrameWindow)
 163
 164 int FreezeFrameMain::load_configuration()
 165 {
 166         KeyFrame *prev_keyframe = get_prev_keyframe(get_source_position());
 167         int64_t prev_position = edl_to_local(prev_keyframe->position);
 168         if(prev_position < get_source_start()) prev_position = get_source_start();
 169         read_data(prev_keyframe);
 170 // Invalidate stored frame
 171         if(config.enabled) first_frame_position = prev_position;
 172         return 0;
 173 }
 174
 175 void FreezeFrameMain::update_gui()
 176 {
 177         if(thread)
 178         {
 179                 load_configuration();
 180                 ((FreezeFrameWindow*)thread->window)->lock_window();
 181                 ((FreezeFrameWindow*)thread->window)->enabled->update(config.enabled);
 182 //              thread->window->line_double->update(config.line_double);
 183                 thread->window->unlock_window();
 184         }
 185 }
 186
 187 void FreezeFrameMain::save_data(KeyFrame *keyframe)
 188 {
 189         FileXML output;
 190
 191 // cause data to be stored directly in text
 192         output.set_shared_output(keyframe->get_data(), MESSAGESIZE);
 193         output.tag.set_title("FREEZEFRAME");
 194         output.append_tag();
 195         if(config.enabled)
 196         {
 197                 output.tag.set_title("ENABLED");
 198                 output.append_tag();
 199                 output.tag.set_title("/ENABLED");
 200                 output.append_tag();
 201         }
 202         if(config.line_double)
 203         {
 204                 output.tag.set_title("LINE_DOUBLE");
 205                 output.append_tag();
 206                 output.tag.set_title("/LINE_DOUBLE");
 207                 output.append_tag();
 208         }
 209         output.tag.set_title("/FREEZEFRAME");
 210         output.append_tag();
 211         output.append_newline();
 212         output.terminate_string();
 213 // data is now in *text
 214 }
 215
 216 void FreezeFrameMain::read_data(KeyFrame *keyframe)
 217 {
 218         FileXML input;
 219
 220         input.set_shared_input(keyframe->get_data(), strlen(keyframe->get_data()));
 221
 222         int result = 0;
 223         config.enabled = 0;
 224         config.line_double = 0;
 225
 226         while(!result)
 227         {
 228                 result = input.read_tag();
 229
 230                 if(!result)
 231                 {
 232                         if(input.tag.title_is("ENABLED"))
 233                         {
 234                                 config.enabled = 1;
 235                         }
 236                         if(input.tag.title_is("LINE_DOUBLE"))
 237                         {
 238                                 config.line_double = 1;
 239                         }
 240                 }
 241         }
 242 }
 243
 244
 245
 246
 247
 248
 249
 250 int FreezeFrameMain::process_buffer(VFrame *frame,
 251                 int64_t start_position,
 252                 double frame_rate)
 253 {
 254         int64_t previous_first_frame = first_frame_position;
 255         load_configuration();
 256
 257 // Just entered frozen range
 258         if(!first_frame && config.enabled)
 259         {
 260                 if(!first_frame)
 261                         first_frame = new VFrame(0,
 262                                 -1,
 263                                 frame->get_w(),
 264                                 frame->get_h(),
 265                                 frame->get_color_model(),
 266                                 -1);
 267 //printf("FreezeFrameMain::process_buffer 1 %jd\n", first_frame_position);
 268                 read_frame(first_frame,
 269                                 0,
 270                                 get_direction() == PLAY_REVERSE ? first_frame_position + 1 : first_frame_position,
 271                                 frame_rate,
 272                                 get_use_opengl());
 273                 if(get_use_opengl()) return run_opengl();
 274                 frame->copy_from(first_frame);
 275         }
 276         else
 277 // Still not frozen
 278         if(!first_frame && !config.enabled)
 279         {
 280                 read_frame(frame,
 281                         0,
 282                         start_position,
 283                         frame_rate,
 284                         get_use_opengl());
 285         }
 286         else
 287 // Just left frozen range
 288         if(first_frame && !config.enabled)
 289         {
 290                 delete first_frame;
 291                 first_frame = 0;
 292                 read_frame(frame,
 293                         0,
 294                         start_position,
 295                         frame_rate,
 296                         get_use_opengl());
 297         }
 298         else
 299 // Still frozen
 300         if(first_frame && config.enabled)
 301         {
 302 // Had a keyframe in frozen range.  Load new first frame
 303                 if(previous_first_frame != first_frame_position)
 304                 {
 305                         read_frame(first_frame,
 306                                 0,
 307                                 get_direction() == PLAY_REVERSE ? first_frame_position + 1 : first_frame_position,
 308                                 frame_rate,
 309                                 get_use_opengl());
 310                 }
 311                 if(get_use_opengl()) return run_opengl();
 312                 frame->copy_from(first_frame);
 313         }
 314
 315
 316 // Line double to support interlacing
 317 //      if(config.line_double && config.enabled)
 318 //      {
 319 //              for(int i = 0; i < frame->get_h() - 1; i += 2)
 320 //              {
 321 //                      memcpy(frame->get_rows()[i + 1],
 322 //                              frame->get_rows()[i],
 323 //                              frame->get_bytes_per_line());
 324 //              }
 325 //      }
 326
 327
 328
 329         return 0;
 330 }
 331
 332 int FreezeFrameMain::handle_opengl()
 333 {
 334 #ifdef HAVE_GL
 335         get_output()->enable_opengl();
 336         get_output()->init_screen();
 337         first_frame->to_texture();
 338         first_frame->bind_texture(0);
 339         first_frame->draw_texture();
 340         get_output()->set_opengl_state(VFrame::SCREEN);
 341 #endif
 342         return 0;
 343 }
 344
 345