libcore/SWFMovie.cpp

   1 //
   2 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3 //   Free Software Foundation, Inc
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19 #include "SWFMovie.h"
  20 #include "movie_definition.h"
  21 #include "movie_root.h"
  22 #include "log.h"
  23
  24 #include <vector>
  25 #include <string>
  26
  27 #include <functional> // for mem_fun, bind1st
  28 #include <algorithm> // for for_each, std::min
  29 #include <utility>
  30 #include <map>
  31
  32 namespace gnash {
  33
  34 SWFMovie::SWFMovie(as_object* object, const SWFMovieDefinition* def,
  35         DisplayObject* parent)
  36         :
  37         Movie(object, def, parent),
  38         _def(def)
  39 {
  40     assert(object);
  41 }
  42
  43 void
  44 SWFMovie::construct(as_object* /*init*/)
  45 {
  46
  47     saveOriginalTarget();
  48
  49     // Load first frame  (1-based index)
  50     size_t nextframe = 1;
  51     if ( !_def->ensure_frame_loaded(nextframe) )
  52     {
  53         IF_VERBOSE_MALFORMED_SWF(
  54             log_swferror(_("Frame %d never loaded. Total frames: %d"),
  55                         nextframe, get_frame_count());
  56         );
  57     }
  58
  59     // Invoke parent placement event handler
  60     MovieClip::construct();
  61 }
  62
  63 // Advance of an SWF-defined movie instance
  64 void
  65 SWFMovie::advance()
  66 {
  67         // Load next frame if available (+2 as m_current_frame is 0-based)
  68         //
  69         // We do this inside advance_root to make sure
  70         // it's only for a root sprite (not a sprite defined
  71         // by DefineSprite!)
  72         size_t nextframe = std::min<size_t>(get_current_frame() + 2,
  73             get_frame_count());
  74         if ( !_def->ensure_frame_loaded(nextframe) )
  75         {
  76                 IF_VERBOSE_MALFORMED_SWF(
  77                     log_swferror(_("Frame %d never loaded. Total frames: %d."),
  78                             nextframe, get_frame_count());
  79                 );
  80         }
  81
  82     MovieClip::advance();
  83 }
  84
  85 SWF::DefinitionTag*
  86 SWFMovie::exportedCharacter(const std::string& symbol)
  87 {
  88     const std::uint16_t id = _def->exportID(symbol);
  89     if (!id) return nullptr;
  90     Characters::iterator it = _characters.find(id);
  91     if (it == _characters.end()) return nullptr;
  92     return _def->getDefinitionTag(id);
  93 }
  94
  95 void
  96 SWFMovie::addCharacter(std::uint16_t id)
  97 {
  98     // If a character is already known, we don't want to mark it uninitialized
  99     // again.
 100     _characters.insert(std::make_pair(id, false));
 101 }
 102
 103 bool
 104 SWFMovie::initializeCharacter(std::uint16_t cid)
 105 {
 106     Characters::iterator it = _characters.find(cid);
 107     if (it == _characters.end()) {
 108         IF_VERBOSE_MALFORMED_SWF(
 109             log_swferror(_("Attempt to perform initialized for a character %s "
 110                            "that does not exist (either not exported or not defined)"),
 111                 cid);
 112         );
 113         return false;
 114     }
 115     if (it->second) return false;
 116     it->second = true;
 117     return true;
 118 }
 119
 120 } // namespace gnash