hybris/egl/helper.cpp

   1
   2 /*
   3  * Copyright (c) 2013 Jolla Ltd.
   4  * Contact: Thomas Perl <thomas.perl@jollamobile.com>
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20
  21 #include "helper.h"
  22
  23 #include <assert.h>
  24 #include <map>
  25
  26
  27 /* Keep track of active EGL window surfaces */
  28 static std::map<EGLSurface,EGLNativeWindowType> _surface_window_map;
  29
  30
  31 void egl_helper_push_mapping(EGLSurface surface, EGLNativeWindowType window)
  32 {
  33     assert(!egl_helper_has_mapping(surface));
  34
  35     _surface_window_map[surface] = window;
  36 }
  37
  38 int egl_helper_has_mapping(EGLSurface surface)
  39 {
  40     return (_surface_window_map.find(surface) != _surface_window_map.end());
  41 }
  42
  43 EGLNativeWindowType egl_helper_pop_mapping(EGLSurface surface)
  44 {
  45     std::map<EGLSurface,EGLNativeWindowType>::iterator it;
  46     it = _surface_window_map.find(surface);
  47
  48     /* Caller must check with egl_helper_has_mapping() before */
  49     assert(it != _surface_window_map.end());
  50
  51     EGLNativeWindowType result = it->second;
  52     _surface_window_map.erase(it);
  53     return result;
  54 }