cinelerra-5.1/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->frame_rate = rate;
  16         this->cycle_start = 0;
  17         this->age = 0;
  18         this->seq_no = 0;
  19         this->in_use = 1;
  20 }
  21
  22 VIcon::
  23 ~VIcon()
  24 {
  25         clear_images();
  26 }
  27
  28 void VIcon::
  29 add_image(VFrame *frm, int ww, int hh, int vcmdl)
  30 {
  31         VIFrame *vifrm = new VIFrame(ww, hh, vcmdl);
  32         VFrame *img = *vifrm;
  33         img->transfer_from(frm);
  34         images.append(vifrm);
  35 }
  36
  37 void VIcon::
  38 draw_vframe(BC_WindowBase *wdw, int x, int y)
  39 {
  40         wdw->draw_vframe(frame(), x,y, vw,vh);
  41 }
  42
  43 VIcon *VIconThread::low_vicon()
  44 {
  45         if( !t_heap.size() ) return 0;
  46         VIcon *vip = t_heap[0];
  47         remove_vicon(0);
  48         return vip;
  49 }
  50
  51 void VIconThread::remove_vicon(int i)
  52 {
  53         int sz = t_heap.size();
  54         for( int k; (k=2*(i+1)) < sz; i=k ) {
  55                 if( t_heap[k]->age > t_heap[k-1]->age ) --k;
  56                 t_heap[i] = t_heap[k];
  57         }
  58         VIcon *last = t_heap[--sz];
  59         t_heap.remove_number(sz);
  60         double age = last->age;
  61         for( int k; i>0 && age<t_heap[k=(i-1)/2]->age; i=k )
  62                 t_heap[i] = t_heap[k];
  63         t_heap[i] = last;
  64 }
  65
  66
  67 VIconThread::
  68 VIconThread(BC_WindowBase *wdw, int vw, int vh)
  69  : Thread(1, 0, 0)
  70 {
  71         this->wdw = wdw;
  72         this->view_win = 0;  this->vicon = 0;
  73         this->view_w = vw;   this->view_h = vh;
  74         this->viewing = 0;
  75         draw_lock = new Condition(0, "VIconThread::draw_lock", 1);
  76         timer = new Timer();
  77         this->refresh_rate = VICON_RATE;
  78         done = 0;
  79         interrupted = -1;
  80 }
  81
  82 VIconThread::
  83 ~VIconThread()
  84 {
  85         stop_drawing();
  86         done = 1;
  87         draw_lock->unlock();
  88         if( Thread::running() ) {
  89                 Thread::cancel();
  90         }
  91         Thread::join();
  92         t_heap.remove_all_objects();
  93         delete timer;
  94         delete draw_lock;
  95 }
  96
  97 void VIconThread::
  98 start_drawing()
  99 {
 100         wdw->lock_window("VIconThread::start_drawing");
 101         if( view_win )
 102                 wdw->set_active_subwindow(view_win);
 103         if( interrupted < 0 )
 104                 draw_lock->unlock();
 105         interrupted = 0;
 106         wdw->unlock_window();
 107 }
 108
 109 void VIconThread::
 110 stop_drawing()
 111 {
 112         wdw->lock_window("VIconThread::stop_drawing");
 113         set_view_popup(0);
 114         if( !interrupted )
 115                 interrupted = 1;
 116         wdw->unlock_window();
 117 }
 118
 119 int VIconThread::keypress_event(int key)
 120 {
 121         if( key != ESC ) return 0;
 122         set_view_popup(0);
 123         return 1;
 124 }
 125
 126 int ViewPopup::button_press_event()
 127 {
 128         vt->set_view_popup(0);
 129         return 1;
 130 }
 131
 132 bool VIconThread::
 133 visible(VIcon *vicon, int x, int y)
 134 {
 135         int y0 = 0;
 136         int my = y + vicon->vh;
 137         if( my <= y0 ) return false;
 138         int y1 = y0 + wdw->get_h();
 139         if( y >= y1 ) return false;
 140         int x0 = 0;
 141         int mx = x + vicon->vw;
 142         if( mx <= x0 ) return false;
 143         int x1 = x0 + wdw->get_w();
 144         if( x >= x1 ) return false;
 145         return true;
 146 }
 147
 148 int ViewPopup::keypress_event()
 149 {
 150         int key = get_keypress();
 151         return vt->keypress_event(key);
 152 }
 153 ViewPopup::ViewPopup(VIconThread *vt, VFrame *frame, int x, int y, int w, int h)
 154  : BC_Popup(vt->wdw, x, y, w, h, BLACK)
 155 {
 156         this->vt = vt;
 157 }
 158
 159 ViewPopup::~ViewPopup()
 160 {
 161         vt->wdw->set_active_subwindow(0);
 162 }
 163
 164 void ViewPopup::draw_vframe(VFrame *frame)
 165 {
 166         BC_WindowBase::draw_vframe(frame, 0,0, get_w(),get_h());
 167 }
 168
 169 ViewPopup *VIconThread::new_view_window(VFrame *frame)
 170 {
 171         int wx = viewing->get_vx() - view_w, rx = 0;
 172         int wy = viewing->get_vy() - view_h, ry = 0;
 173         wdw->get_root_coordinates(wx, wy, &rx, &ry);
 174         ViewPopup *vwin = new ViewPopup(this, frame, rx, ry, view_w, view_h);
 175         wdw->set_active_subwindow(vwin);
 176         return vwin;
 177 }
 178
 179 void VIconThread::
 180 reset_images()
 181 {
 182         for( int i=t_heap.size(); --i>=0; ) t_heap[i]->reset();
 183         timer->update();
 184         img_dirty = win_dirty = 0;
 185 }
 186
 187 void VIconThread::add_vicon(VIcon *vip)
 188 {
 189         double age = vip->age;
 190         int i = t_heap.size();  t_heap.append(vip);
 191         for( int k; i>0 && age<t_heap[(k=(i-1)/2)]->age; i=k )
 192                 t_heap[i] = t_heap[k];
 193         t_heap[i] = vip;
 194 }
 195
 196 int VIconThread::del_vicon(VIcon *&vicon)
 197 {
 198         int i = t_heap.size();
 199         while( --i >= 0 && t_heap[i] != vicon );
 200         if( i < 0 ) return 0;
 201         remove_vicon(i);
 202         delete vicon;  vicon = 0;
 203         return 1;
 204 }
 205
 206 void VIconThread::set_view_popup(VIcon *vicon)
 207 {
 208         this->vicon = vicon;
 209 }
 210
 211 int VIconThread::
 212 update_view()
 213 {
 214         delete view_win;  view_win = 0;
 215         if( (viewing=vicon) != 0 ) {
 216                 VFrame *frame = viewing->frame();
 217                 view_win = new_view_window(frame);
 218                 view_win->show_window();
 219         }
 220         wdw->set_active_subwindow(view_win);
 221         return 1;
 222 }
 223
 224
 225 void VIconThread::
 226 draw_images()
 227 {
 228         for( int i=0; i<t_heap.size(); ++i )
 229                 draw(t_heap[i]);
 230 }
 231
 232 void VIconThread::
 233 flash()
 234 {
 235         if( !img_dirty && !win_dirty ) return;
 236         if( img_dirty ) wdw->flash();
 237         if( win_dirty && view_win ) view_win->flash();
 238         win_dirty = img_dirty = 0;
 239 }
 240
 241 int VIconThread::
 242 draw(VIcon *vicon)
 243 {
 244         int x = vicon->get_vx(), y = vicon->get_vy();
 245         int draw_img = visible(vicon, x, y);
 246         int draw_win = view_win && viewing == vicon ? 1 : 0;
 247         if( !draw_img && !draw_win ) return 0;
 248         if( !vicon->frame() ) return 0;
 249         if( draw_img ) {
 250                 vicon->draw_vframe(wdw, x, y);
 251                 img_dirty = 1;
 252         }
 253         if( draw_win ) {
 254                 view_win->draw_vframe(vicon->frame());
 255                 win_dirty = 1;
 256         }
 257         return 1;
 258 }
 259
 260 void VIconThread::
 261 run()
 262 {
 263         while(!done) {
 264                 draw_lock->lock("VIconThread::run 0");
 265                 if( done ) break;
 266                 wdw->lock_window("BC_WindowBase::run 1");
 267                 drawing_started();
 268                 reset_images();
 269                 int64_t seq_no = 0, now = 0;
 270                 int64_t draw_flash = 1000 / refresh_rate;
 271                 while( !interrupted ) {
 272                         if( viewing != vicon )
 273                                 update_view();
 274                         VIcon *next = low_vicon();
 275                         while( next && next->age < draw_flash ) {
 276                                 now = timer->get_difference();
 277                                 if( now >= draw_flash ) break;
 278                                 draw(next);
 279                                 if( !next->seq_no ) next->cycle_start = now;
 280                                 int64_t ref_no = (now - next->cycle_start) / 1000. * refresh_rate;
 281                                 int count = ref_no - next->seq_no;
 282                                 if( count < 1 ) count = 1;
 283                                 ref_no = next->seq_no + count;
 284                                 next->age =  next->cycle_start + 1000. * ref_no / refresh_rate;
 285                                 if( !next->set_seq_no(ref_no) )
 286                                         next->age = now + 1000.;
 287                                 add_vicon(next);
 288                                 next = low_vicon();
 289                         }
 290                         if( !next ) break;
 291                         add_vicon(next);
 292                         if( draw_flash < now+1 )
 293                                 draw_flash = now+1;
 294                         wdw->unlock_window();
 295                         while( !interrupted ) {
 296                                 now = timer->get_difference();
 297                                 int64_t ms = draw_flash - now;
 298                                 if( ms <= 0 ) break;
 299                                 if( ms > 100 ) ms = 100;
 300                                 Timer::delay(ms);
 301                         }
 302                         wdw->lock_window("BC_WindowBase::run 2");
 303                         now = timer->get_difference();
 304                         int64_t late = now - draw_flash;
 305                         if( late < 1000 ) flash();
 306                         int64_t ref_no = now / 1000. * refresh_rate;
 307                         int64_t count = ref_no - seq_no;
 308                         if( count < 1 ) count = 1;
 309                         seq_no += count;
 310                         draw_flash = seq_no * 1000. / refresh_rate;
 311                 }
 312                 if( viewing != vicon )
 313                         update_view();
 314                 drawing_stopped();
 315                 interrupted = -1;
 316                 wdw->unlock_window();
 317         }
 318 }
 319
 320 void VIcon::dump(const char *dir)
 321 {
 322         mkdir(dir,0777);
 323         for( int i=0; i<images.size(); ++i ) {
 324                 char fn[1024];  sprintf(fn,"%s/img%05d.png",dir,i);
 325                 printf("\r%s",fn);
 326                 VFrame *img = *images[i];
 327                 img->write_png(fn);
 328         }
 329         printf("\n");
 330 }
 331