Dogcows Code - chaz/yoink/blob - src/moof/backend.cc

   1
   2 /*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
   3 **]  All rights reserved.
   4 *
   5 * vi:ts=4 sw=4 tw=75
   6 *
   7 * Distributable under the terms and conditions of the 2-clause BSD license;
   8 * see the file COPYING for a complete text of the license.
   9 *
  10 **************************************************************************/
  11
  12 #include <stdexcept>
  13
  14 #include <SDL/SDL.h>
  15 #include "fastevents.h"
  16
  17 #include "backend.hh"
  18 #include "log.hh"
  19
  20
  21 namespace moof {
  22
  23
  24 struct impl
  25 {
  26         static bool             is_initialized;
  27         static int              retain_count;
  28 };
  29
  30 bool    impl::is_initialized = false;
  31 int             impl::retain_count = 0;
  32
  33
  34 backend::backend()
  35 {
  36         if (impl::retain_count++ == 0)
  37         {
  38 #if defined(_WIN32)
  39                 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0)
  40 #else
  41                 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTTHREAD) != 0)
  42 #endif
  43                 {
  44                         throw std::runtime_error(SDL_GetError());
  45                 }
  46                 else
  47                 {
  48                         char name[128];
  49                         SDL_VideoDriverName(name, sizeof(name));
  50                         log_info << "initialized SDL; using video driver `"
  51                                          << name << "'" << std::endl;
  52                 }
  53
  54                 if (FE_Init() != 0)
  55                 {
  56                         throw std::runtime_error(FE_GetError());
  57                 }
  58         }
  59
  60         impl::is_initialized = true;
  61 }
  62
  63 backend::backend(const backend& backend)
  64 {
  65         ++impl::retain_count;
  66 }
  67
  68 backend& backend::operator=(const backend& backend)
  69 {
  70         ++impl::retain_count;
  71         return *this;
  72 }
  73
  74 backend::~backend()
  75 {
  76         if (--impl::retain_count == 0)
  77         {
  78                 log_info("shutting down SDL...");
  79                 FE_Quit();
  80                 SDL_Quit();
  81
  82                 impl::is_initialized = false;
  83         }
  84 }
  85
  86 bool backend::is_initialized()
  87 {
  88         return impl::is_initialized;
  89 }
  90
  91
  92 } // namespace moof
  93