cinelerra-5.0/guicast/vicon.C

   1 #include "vicon.h"
   2
   3 #include "bctimer.h"
   4 #include "bcwindow.h"
   5 #include "colors.h"
   6 #include "keys.h"
   7 #include "mutex.h"
   8 #include "condition.h"
   9
  10 VIcon::
  11 VIcon(int vw, int vh, double rate)
  12 {
  13         this->vw = vw;
  14         this->vh = vh;
  15         this->period = 1000./rate;
  16         this->age = 0;
  17         this->seq_no = 0;
  18         this->in_use = 1;
  19 }
  20
  21 VIcon::
  22 ~VIcon()
  23 {
  24         clear_images();
  25 }
  26
  27 void VIcon::
  28 add_image(VFrame *frm, int ww, int hh, int vcmdl)
  29 {
  30         VFrame *img = new VFrame(ww, hh, vcmdl);
  31         img->transfer_from(frm);
  32         images.append(img);
  33 }
  34
  35 void VIcon::
  36 draw_vframe(BC_WindowBase *wdw, int x, int y)
  37 {
  38         wdw->draw_vframe(frame(), x,y, vw,vh);
  39 }
  40
  41 VIcon *VIconThread::low_vicon()
  42 {
  43         if( !t_heap.size() ) return 0;
  44         VIcon *vip = t_heap[0];
  45         remove_vicon(0);
  46         return vip;
  47 }
  48
  49 void VIconThread::remove_vicon(int i)
  50 {
  51         int sz = t_heap.size();
  52         for( int k; (k=2*(i+1)) < sz; i=k ) {
  53                 if( t_heap[k]->age > t_heap[k-1]->age ) --k;
  54                 t_heap[i] = t_heap[k];
  55         }
  56         VIcon *last = t_heap[--sz];
  57         t_heap.remove_number(sz);
  58         double age = last->age;
  59         for( int k; i>0 && age<t_heap[k=(i-1)/2]->age; i=k )
  60                 t_heap[i] = t_heap[k];
  61         t_heap[i] = last;
  62 }
  63
  64
  65 VIconThread::
  66 VIconThread(BC_WindowBase *wdw, int vw, int vh)
  67  : Thread(1, 0, 0)
  68 {
  69         this->wdw = wdw;
  70         this->view_win = 0;  this->vicon = 0;
  71         this->view_w = vw;   this->view_h = vh;
  72         this->viewing = 0;   this->draw_flash = 0;
  73         draw_lock = new Condition(0, "VIconThread::draw_lock", 1);
  74         timer = new Timer();
  75         done = 0;
  76         interrupted = 1;
  77 }
  78
  79 VIconThread::
  80 ~VIconThread()
  81 {
  82         stop_drawing();
  83         done = 1;
  84         draw_lock->unlock();
  85         if( Thread::running() ) {
  86                 Thread::cancel();
  87                 Thread::join();
  88         }
  89         t_heap.remove_all_objects();
  90         delete timer;
  91         delete draw_lock;
  92 }
  93
  94 void VIconThread::
  95 start_drawing()
  96 {
  97         wdw->lock_window("VIconThread::start_drawing");
  98         if( interrupted )
  99                 draw_lock->unlock();
 100         wdw->unlock_window();
 101 }
 102
 103 void VIconThread::
 104 stop_drawing()
 105 {
 106         wdw->lock_window("VIconThread::stop_drawing");
 107         interrupted = 1;
 108         wdw->unlock_window();
 109 }
 110
 111 int VIconThread::keypress_event(int key)
 112 {
 113         if( key != ESC ) return 0;
 114         set_view_popup(0);
 115         return 1;
 116 }
 117
 118 int ViewPopup::button_press_event()
 119 {
 120         vt->set_view_popup(0);
 121         return 1;
 122 }
 123
 124 bool VIconThread::
 125 visible(VIcon *vicon, int x, int y)
 126 {
 127         int y0 = 0;
 128         int my = y + vicon->vh;
 129         if( my <= y0 ) return false;
 130         int y1 = y0 + wdw->get_h();
 131         if( y >= y1 ) return false;
 132         int x0 = 0;
 133         int mx = x + vicon->vw;
 134         if( mx <= x0 ) return false;
 135         int x1 = x0 + wdw->get_w();
 136         if( x >= x1 ) return false;
 137         return true;
 138 }
 139
 140 int ViewPopup::keypress_event()
 141 {
 142         int key = get_keypress();
 143         return vt->keypress_event(key);
 144 }
 145 ViewPopup::ViewPopup(VIconThread *vt, VFrame *frame, int x, int y, int w, int h)
 146  : BC_Popup(vt->wdw, x, y, w, h, BLACK)
 147 {
 148         this->vt = vt;
 149 }
 150
 151 ViewPopup::~ViewPopup()
 152 {
 153         vt->wdw->set_active_subwindow(0);
 154 }
 155
 156 void ViewPopup::draw_vframe(VFrame *frame)
 157 {
 158         BC_WindowBase::draw_vframe(frame, 0,0, get_w(),get_h());
 159 }
 160
 161 ViewPopup *VIconThread::new_view_window(VFrame *frame)
 162 {
 163         int wx = viewing->get_vx() - view_w, rx = 0;
 164         int wy = viewing->get_vy() - view_h, ry = 0;
 165         wdw->get_root_coordinates(wx, wy, &rx, &ry);
 166         ViewPopup *vwin = new ViewPopup(this, frame, rx, ry, view_w, view_h);
 167         wdw->set_active_subwindow(vwin);
 168         return vwin;
 169 }
 170
 171 void VIconThread::
 172 reset_images()
 173 {
 174         for( int i=t_heap.size(); --i>=0; ) t_heap[i]->age = 0;
 175         timer->update();
 176         img_dirty = win_dirty = 0;
 177         draw_flash = 0;
 178 }
 179
 180 void VIconThread::add_vicon(VIcon *vip, double age)
 181 {
 182         vip->age = age;
 183         int i = t_heap.size();  t_heap.append(vip);
 184         for( int k; i>0 && age<t_heap[(k=(i-1)/2)]->age; i=k )
 185                 t_heap[i] = t_heap[k];
 186         t_heap[i] = vip;
 187 }
 188
 189 int VIconThread::del_vicon(VIcon *&vicon)
 190 {
 191         int i = t_heap.size();
 192         while( --i >= 0 && t_heap[i] != vicon );
 193         if( i < 0 ) return 0;
 194         remove_vicon(i);
 195         delete vicon;  vicon = 0;
 196         return 1;
 197 }
 198
 199 void VIconThread::set_view_popup(VIcon *vicon)
 200 {
 201         this->vicon = vicon;
 202 }
 203
 204 int VIconThread::
 205 update_view()
 206 {
 207         delete view_win;  view_win = 0;
 208         if( (viewing=vicon) != 0 ) {
 209                 VFrame *frame = viewing->frame();
 210                 view_win = new_view_window(frame);
 211                 view_win->show_window();
 212         }
 213         return 1;
 214 }
 215
 216
 217 void VIconThread::
 218 draw_images()
 219 {
 220         for( int i=0; i<t_heap.size(); ++i )
 221                 draw(t_heap[i]);
 222 }
 223
 224 void VIconThread::
 225 flash()
 226 {
 227         if( !img_dirty && !win_dirty ) return;
 228         if( img_dirty ) wdw->flash();
 229         if( win_dirty ) view_win->flash();
 230         win_dirty = img_dirty = 0;
 231 }
 232
 233 int VIconThread::
 234 draw(VIcon *vicon)
 235 {
 236         int x = vicon->get_vx(), y = vicon->get_vy();
 237         int draw_img = visible(vicon, x, y);
 238         int draw_win = view_win && viewing == vicon ? 1 : 0;
 239         if( !draw_img && !draw_win ) return 0;
 240         if( draw_img ) {
 241                 vicon->draw_vframe(wdw, x, y);
 242                 img_dirty = 1;
 243         }
 244         if( draw_win ) {
 245                 view_win->draw_vframe(vicon->frame());
 246                 win_dirty = 1;
 247         }
 248         return 1;
 249 }
 250
 251 void VIconThread::
 252 run()
 253 {
 254         while(!done) {
 255                 draw_lock->lock("VIconThread::run 0");
 256                 if( done ) break;;
 257                 wdw->lock_window("BC_WindowBase::run 1");
 258                 reset_images();
 259                 interrupted = 0;
 260                 drawing_started();
 261                 while( !interrupted ) {
 262                         if( viewing != vicon )
 263                                 update_view();
 264                         VIcon *next = low_vicon();
 265                         if( !next ) break;
 266                         if( !next->frame() ) {
 267                                 delete next;  next = 0;
 268                                 continue;
 269                         }
 270                         int64_t next_time = next->age;
 271                         int64_t this_time = timer->get_difference();
 272                         int64_t msec = this_time - next_time;
 273                         int count = msec / next->period;
 274                         int nfrms = count > 0 ? count : 1;
 275                         if( !next->next_frame(nfrms) )
 276                                 next->age = this_time + 1000;
 277                         add_vicon(next, next->age);
 278                         if( msec < 1000 && draw(next) && !draw_flash )
 279                                 draw_flash = next_time;
 280                         wdw->unlock_window();
 281                         msec = next_time - timer->get_difference();
 282                         if( msec < 1 ) msec = 1;
 283                         while( msec > 0 && !interrupted ) {
 284                                 int ms = msec > 100 ? 100 : msec;
 285                                 Timer::delay(ms);  msec -= ms;
 286                         }
 287                         wdw->lock_window("BC_WindowBase::run 2");
 288                         if( interrupted ) break;
 289                         if( draw_flash ) {
 290                                 int64_t msec = timer->get_difference() - draw_flash;
 291                                 if( msec < 1000 ) flash();
 292                                 draw_flash = 0;
 293                         }
 294                 }
 295                 drawing_stopped();
 296                 interrupted = -1;
 297                 wdw->unlock_window();
 298         }
 299 }
 300
 301 void VIcon::dump(const char *dir)
 302 {
 303         mkdir(dir,0777);
 304         for( int i=0; i<images.size(); ++i ) {
 305                 char fn[1024];  sprintf(fn,"%s/img%05d.png",dir,i);
 306                 printf("\r%s",fn);
 307                 images[i]->write_png(fn);
 308         }
 309         printf("\n");
 310 }
 311