Gnash 0.8.10dev
|
00001 // 00002 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 00003 // 2011 Free Software Foundation, Inc 00004 // 00005 // This program is free software; you can redistribute it and/or modify 00006 // it under the terms of the GNU General Public License as published by 00007 // the Free Software Foundation; either version 3 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // This program is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with this program; if not, write to the Free Software 00017 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 00019 #ifndef GNASH_ACTION_BUFFER_H 00020 #define GNASH_ACTION_BUFFER_H 00021 00022 #include <string> 00023 #include <vector> 00024 #include <boost/noncopyable.hpp> 00025 #include <boost/cstdint.hpp> 00026 00027 #include "GnashException.h" 00028 #include "log.h" 00029 00030 // Forward declarations 00031 namespace gnash { 00032 class as_value; 00033 class movie_definition; 00034 class SWFStream; // for read signature 00035 } 00036 00037 namespace gnash { 00038 00040 // 00045 // 00047 class action_buffer : boost::noncopyable 00048 { 00049 public: 00050 00051 action_buffer(const movie_definition& md); 00052 00054 // 00061 void read(SWFStream& in, unsigned long endPos); 00062 00063 size_t size() const { return m_buffer.size(); } 00064 00065 boost::uint8_t operator[] (size_t off) const 00066 { 00067 if (off >= m_buffer.size()) { 00068 throw ActionParserException (_("Attempt to read outside " 00069 "action buffer")); 00070 } 00071 return m_buffer[off]; 00072 } 00073 00075 std::string disasm(size_t pc) const; 00076 00078 // 00081 const char* read_string(size_t pc) const 00082 { 00083 assert(pc <= m_buffer.size() ); 00084 if (pc == m_buffer.size()) 00085 { 00086 throw ActionParserException(_("Asked to read string when only " 00087 "1 byte remains in the buffer")); 00088 } 00089 return reinterpret_cast<const char*>(&m_buffer[pc]); 00090 } 00091 00093 const unsigned char* getFramePointer(size_t pc) const 00094 { 00095 assert (pc < m_buffer.size()); 00096 return reinterpret_cast<const unsigned char*>(&m_buffer.at(pc)); 00097 } 00098 00100 // 00103 boost::int16_t read_int16(size_t pc) const 00104 { 00105 if (pc + 1 >= m_buffer.size()) { 00106 throw ActionParserException(_("Attempt to read outside action buffer limits")); 00107 } 00108 boost::int16_t ret = (m_buffer[pc] | (m_buffer[pc + 1] << 8)); 00109 return ret; 00110 } 00111 00114 boost::uint16_t read_uint16(size_t pc) const 00115 { 00116 return static_cast<boost::uint16_t>(read_int16(pc)); 00117 } 00118 00120 // 00123 boost::int32_t read_int32(size_t pc) const 00124 { 00125 if (pc + 3 >= m_buffer.size()) { 00126 throw ActionParserException(_("Attempt to read outside action buffer limits")); 00127 } 00128 00129 boost::int32_t val = m_buffer[pc] 00130 | (m_buffer[pc + 1] << 8) 00131 | (m_buffer[pc + 2] << 16) 00132 | (m_buffer[pc + 3] << 24); 00133 return val; 00134 } 00135 00137 // 00140 float read_float_little(size_t pc) const; 00141 00143 // 00147 double read_double_wacky(size_t pc) const; 00148 00150 size_t dictionary_size() const 00151 { 00152 return m_dictionary.size(); 00153 } 00154 00156 const char* dictionary_get(size_t n) const 00157 { 00158 assert (n < m_dictionary.size()); 00159 return m_dictionary[n]; 00160 } 00161 00163 // 00184 void process_decl_dict(size_t start_pc, size_t stop_pc) const; 00185 00187 const std::string& getDefinitionURL() const; 00188 00190 int getDefinitionVersion() const; 00191 00192 const movie_definition& getMovieDefinition() const { 00193 return _src; 00194 } 00195 00196 private: 00197 00199 std::vector<boost::uint8_t> m_buffer; 00200 00202 mutable std::vector<const char*> m_dictionary; 00203 00205 mutable int m_decl_dict_processed_at; 00206 00208 // 00212 const movie_definition& _src; 00213 }; 00214 00215 00216 } // end namespace gnash 00217 00218 00219 #endif // GNASH_ACTION_BUFFER_H 00220 00221 00222 // Local Variables: 00223 // mode: C++ 00224 // indent-tabs-mode: t 00225 // End: