plugins/freezeframe/freezeframe.C

   1 #include "bcdisplayinfo.h"
   2 #include "bchash.h"
   3 #include "filexml.h"
   4 #include "freezeframe.h"
   5 #include "language.h"
   6 #include "picon_png.h"
   7
   8
   9
  10 #include <string.h>
  11
  12
  13 REGISTER_PLUGIN(FreezeFrameMain)
  14
  15
  16
  17
  18
  19 FreezeFrameConfig::FreezeFrameConfig()
  20 {
  21         enabled = 0;
  22         line_double = 0;
  23 }
  24
  25 void FreezeFrameConfig::copy_from(FreezeFrameConfig &that)
  26 {
  27         enabled = that.enabled;
  28         line_double = that.line_double;
  29 }
  30
  31 int FreezeFrameConfig::equivalent(FreezeFrameConfig &that)
  32 {
  33         return enabled == that.enabled &&
  34                 line_double == that.line_double;
  35 }
  36
  37 void FreezeFrameConfig::interpolate(FreezeFrameConfig &prev,
  38         FreezeFrameConfig &next,
  39         long prev_frame,
  40         long next_frame,
  41         long current_frame)
  42 {
  43         this->enabled = prev.enabled;
  44         this->line_double = prev.line_double;
  45 }
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56 FreezeFrameWindow::FreezeFrameWindow(FreezeFrameMain *client, int x, int y)
  57  : BC_Window(client->get_gui_string(),
  58         x,
  59         y,
  60         200,
  61         100,
  62         200,
  63         100,
  64         0,
  65         0,
  66         1)
  67 {
  68         this->client = client;
  69 }
  70
  71 FreezeFrameWindow::~FreezeFrameWindow()
  72 {
  73 }
  74
  75 int FreezeFrameWindow::create_objects()
  76 {
  77         int x = 10, y = 10;
  78         add_tool(enabled = new FreezeFrameToggle(client,
  79                 &client->config.enabled,
  80                 x,
  81                 y,
  82                 _("Enabled")));
  83         y += 30;
  84         add_tool(line_double = new FreezeFrameToggle(client,
  85                 &client->config.line_double,
  86                 x,
  87                 y,
  88                 _("Line double")));
  89         show_window();
  90         flush();
  91         return 0;
  92 }
  93
  94 WINDOW_CLOSE_EVENT(FreezeFrameWindow)
  95
  96
  97
  98
  99 PLUGIN_THREAD_OBJECT(FreezeFrameMain, FreezeFrameThread, FreezeFrameWindow)
 100
 101
 102
 103
 104
 105 FreezeFrameToggle::FreezeFrameToggle(FreezeFrameMain *client,
 106         int *value,
 107         int x,
 108         int y,
 109         char *text)
 110  : BC_CheckBox(x, y, *value, text)
 111 {
 112         this->client = client;
 113         this->value = value;
 114 }
 115 FreezeFrameToggle::~FreezeFrameToggle()
 116 {
 117 }
 118 int FreezeFrameToggle::handle_event()
 119 {
 120         *value = get_value();
 121         client->send_configure_change();
 122         return 1;
 123 }
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136 FreezeFrameMain::FreezeFrameMain(PluginServer *server)
 137  : PluginVClient(server)
 138 {
 139         PLUGIN_CONSTRUCTOR_MACRO
 140         first_frame = 0;
 141         first_frame_position = -1;
 142 }
 143
 144 FreezeFrameMain::~FreezeFrameMain()
 145 {
 146         PLUGIN_DESTRUCTOR_MACRO
 147         if(first_frame) delete first_frame;
 148 }
 149
 150 char* FreezeFrameMain::plugin_title() { return N_("Freeze Frame"); }
 151 int FreezeFrameMain::is_synthesis() { return 1; }
 152 int FreezeFrameMain::is_realtime() { return 1; }
 153
 154
 155 SHOW_GUI_MACRO(FreezeFrameMain, FreezeFrameThread)
 156
 157 RAISE_WINDOW_MACRO(FreezeFrameMain)
 158
 159 SET_STRING_MACRO(FreezeFrameMain)
 160
 161 NEW_PICON_MACRO(FreezeFrameMain)
 162
 163 int FreezeFrameMain::load_configuration()
 164 {
 165         KeyFrame *prev_keyframe = get_prev_keyframe(get_source_position());
 166         int64_t prev_position = edl_to_local(prev_keyframe->position);
 167         if(prev_position < get_source_start()) prev_position = get_source_start();
 168         read_data(prev_keyframe);
 169 // Invalidate stored frame
 170         if(config.enabled) first_frame_position = prev_position;
 171         return 0;
 172 }
 173
 174 void FreezeFrameMain::update_gui()
 175 {
 176         if(thread)
 177         {
 178                 load_configuration();
 179                 thread->window->lock_window();
 180                 thread->window->enabled->update(config.enabled);
 181                 thread->window->line_double->update(config.line_double);
 182                 thread->window->unlock_window();
 183         }
 184 }
 185
 186 void FreezeFrameMain::save_data(KeyFrame *keyframe)
 187 {
 188         FileXML output;
 189
 190 // cause data to be stored directly in text
 191         output.set_shared_string(keyframe->data, MESSAGESIZE);
 192         output.tag.set_title("FREEZEFRAME");
 193         output.append_tag();
 194         if(config.enabled)
 195         {
 196                 output.tag.set_title("ENABLED");
 197                 output.append_tag();
 198         }
 199         if(config.line_double)
 200         {
 201                 output.tag.set_title("LINE_DOUBLE");
 202                 output.append_tag();
 203         }
 204         output.terminate_string();
 205 // data is now in *text
 206 }
 207
 208 void FreezeFrameMain::read_data(KeyFrame *keyframe)
 209 {
 210         FileXML input;
 211
 212         input.set_shared_string(keyframe->data, strlen(keyframe->data));
 213
 214         int result = 0;
 215         config.enabled = 0;
 216         config.line_double = 0;
 217
 218         while(!result)
 219         {
 220                 result = input.read_tag();
 221
 222                 if(!result)
 223                 {
 224                         if(input.tag.title_is("ENABLED"))
 225                         {
 226                                 config.enabled = 1;
 227                         }
 228                         if(input.tag.title_is("LINE_DOUBLE"))
 229                         {
 230                                 config.line_double = 1;
 231                         }
 232                 }
 233         }
 234 }
 235
 236 int FreezeFrameMain::load_defaults()
 237 {
 238         char directory[BCTEXTLEN], string[BCTEXTLEN];
 239 // set the default directory
 240         sprintf(directory, "%sfreezeframe.rc", BCASTDIR);
 241
 242 // load the defaults
 243         defaults = new BC_Hash(directory);
 244         defaults->load();
 245
 246         config.enabled = defaults->get("ENABLED", config.enabled);
 247         config.line_double = defaults->get("LINE_DOUBLE", config.line_double);
 248         return 0;
 249 }
 250
 251 int FreezeFrameMain::save_defaults()
 252 {
 253         defaults->update("ENABLED", config.enabled);
 254         defaults->update("LINE_DOUBLE", config.line_double);
 255         defaults->save();
 256         return 0;
 257 }
 258
 259
 260
 261
 262
 263
 264 int FreezeFrameMain::process_buffer(VFrame *frame,
 265                 int64_t start_position,
 266                 double frame_rate)
 267 {
 268         int64_t previous_first_frame = first_frame_position;
 269         load_configuration();
 270
 271 // Just entered frozen range
 272         if(!first_frame && config.enabled)
 273         {
 274                 if(!first_frame)
 275                         first_frame = new VFrame(0,
 276                                 frame->get_w(),
 277                                 frame->get_h(),
 278                                 frame->get_color_model());
 279                 read_frame(first_frame,
 280                                 0,
 281                                 first_frame_position,
 282                                 frame_rate);
 283                 frame->copy_from(first_frame);
 284         }
 285         else
 286 // Still not frozen
 287         if(!first_frame && !config.enabled)
 288         {
 289                 read_frame(frame,
 290                         0,
 291                         start_position,
 292                         frame_rate);
 293         }
 294         else
 295 // Just left frozen range
 296         if(first_frame && !config.enabled)
 297         {
 298                 delete first_frame;
 299                 first_frame = 0;
 300                 read_frame(frame,
 301                         0,
 302                         start_position,
 303                         frame_rate);
 304         }
 305         else
 306 // Still frozen
 307         if(first_frame && config.enabled)
 308         {
 309 // Had a keyframe in frozen range.  Load new first frame
 310                 if(previous_first_frame != first_frame_position)
 311                 {
 312                         read_frame(first_frame,
 313                                 0,
 314                                 first_frame_position,
 315                                 frame_rate);
 316                 }
 317                 frame->copy_from(first_frame);
 318         }
 319
 320
 321 // Line double to support interlacing
 322         if(config.line_double && config.enabled)
 323         {
 324                 for(int i = 0; i < frame->get_h() - 1; i += 2)
 325                 {
 326                         memcpy(frame->get_rows()[i + 1],
 327                                 frame->get_rows()[i],
 328                                 frame->get_bytes_per_line());
 329                 }
 330         }
 331
 332
 333
 334         return 0;
 335 }
 336