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00001 /* MediaInfoDLL - All info about media files, for DLL
00002 // Copyright (C) 2002-2008 Jerome Martinez, Zen@MediaArea.net
00003 //
00004 // This library is free software: you can redistribute it and/or modify it
00005 // under the terms of the GNU Lesser General Public License as published by
00006 // the Free Software Foundation, either version 3 of the License, or
00007 // any later version.
00008 //
00009 // This library is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU Lesser General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU Lesser General Public License
00015 // along with this library. If not, see <http://www.gnu.org/licenses/>.
00016 //
00017 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
00018 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
00019 //
00020 // Public DLL interface implementation
00021 // Wrapper for MediaInfo Library
00022 // See MediaInfo.h for help
00023 //
00024 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
00025 
00026 #ifndef MediaInfoDLLH
00027 #define MediaInfoDLLH
00028 
00029 /*-------------------------------------------------------------------------*/
00030 #if defined (_WIN32) || defined (WIN32)
00031     #define MEDIAINFODLL_NAME  "MediaInfo.dll"
00032 #else
00033     #define MEDIAINFODLL_NAME  "libMediaInfo.la"
00034     #define __stdcall
00035 #endif 
00036 #include <new> //For size_t in MacOS
00037 
00038 /*-------------------------------------------------------------------------*/
00039 /*Char types                                                               */
00040 #undef  _T
00041 #define _T(__x)     __T(__x)
00042 #if defined(UNICODE) || defined (_UNICODE)
00043     typedef wchar_t MediaInfo_Char;
00044     #undef  __T
00045     #define __T(__x) L ## __x
00046     #define MEDIAINFO_Ansi ""
00047 #else
00048     typedef char MediaInfo_Char;
00049     #undef  __T
00050     #define __T(__x) __x
00051     #define MEDIAINFO_Ansi "A"
00052 #endif
00053 /*-------------------------------------------------------------------------*/
00054 
00055 /*-------------------------------------------------------------------------*/
00056 /*NULL                                                                      */
00057 #ifndef NULL
00058     #define NULL 0
00059 #endif
00060 /*-------------------------------------------------------------------------*/
00061 
00063 typedef enum MediaInfo_stream_t
00064 {
00065     MediaInfo_Stream_General,
00066     MediaInfo_Stream_Video,
00067     MediaInfo_Stream_Audio,
00068     MediaInfo_Stream_Text,
00069     MediaInfo_Stream_Chapters,
00070     MediaInfo_Stream_Image,
00071     MediaInfo_Stream_Menu,
00072     MediaInfo_Stream_Max
00073 } MediaInfo_stream_C;
00074 
00076 typedef enum MediaInfo_info_t
00077 {
00078     MediaInfo_Info_Name,
00079     MediaInfo_Info_Text,
00080     MediaInfo_Info_Measure,
00081     MediaInfo_Info_Options,
00082     MediaInfo_Info_Name_Text,
00083     MediaInfo_Info_Measure_Text,
00084     MediaInfo_Info_Info,
00085     MediaInfo_Info_HowTo,
00086     MediaInfo_Info_Max
00087 } MediaInfo_info_C;
00088 
00090 typedef enum MediaInfo_infooptions_t
00091 {
00092     MediaInfo_InfoOption_ShowInInform,
00093     MediaInfo_InfoOption_Reserved,
00094     MediaInfo_InfoOption_ShowInSupported,
00095     MediaInfo_InfoOption_TypeOfValue,
00096     MediaInfo_InfoOption_Max
00097 } MediaInfo_infooptions_C;
00098 
00100 typedef enum MediaInfo_fileoptions_t
00101 {
00102     MediaInfo_FileOption_Nothing        =0x00,
00103     MediaInfo_FileOption_Recursive      =0x01,
00104     MediaInfo_FileOption_CloseAll       =0x02,
00105     MediaInfo_FileOption_Max            =0x04
00106 } MediaInfo_fileoptions_C;
00107 
00108 
00109 #ifdef __cplusplus
00110 extern "C"
00111 {
00112 #endif /* __cplusplus */
00113 
00114 #ifdef MEDIAINFO_GLIBC
00115     #include <gmodule.h>
00116     static GModule* Module=NULL;
00117 #elif defined (_WIN32) || defined (WIN32)
00118     #include <windows.h>
00119     static HMODULE  Module=NULL;
00120 #else
00121     #include <dlfcn.h>
00122     static void*    Module=NULL;
00123 #endif
00124 static size_t Module_Count=0;
00125 
00126 #ifdef MEDIAINFO_GLIBC
00127 #define MEDIAINFO_ASSIGN(_Name,_Name2) \
00128     if (!g_module_symbol (Module, "MediaInfo"MEDIAINFO_Ansi"_"_Name2, (gpointer*)&MediaInfo_##_Name)) \
00129         Errors++; \
00130     if (!g_module_symbol (Module, "MediaInfoList"MEDIAINFO_Ansi"_"_Name2, (gpointer*)&MediaInfoList_##_Name)) \
00131         Errors++;
00132 #elif defined (_WIN32) || defined (WIN32)
00133 #define MEDIAINFO_ASSIGN(_Name,_Name2) \
00134     MediaInfo_##_Name=(MEDIAINFO_##_Name)GetProcAddress(Module, "MediaInfo"MEDIAINFO_Ansi"_"_Name2); \
00135     if (MediaInfo_##_Name==NULL) Errors++; \
00136     MediaInfoList_##_Name=(MEDIAINFOLIST_##_Name)GetProcAddress(Module, "MediaInfoList"MEDIAINFO_Ansi"_"_Name2); \
00137     if (MediaInfoList_##_Name==NULL) Errors++;
00138 #else
00139 #define MEDIAINFO_ASSIGN(_Name,_Name2) \
00140     MediaInfo_##_Name=(MEDIAINFO_##_Name)dlsym(Module, "MediaInfo"MEDIAINFO_Ansi"_"_Name2); \
00141     if (MediaInfo_##_Name==NULL) Errors++; \
00142     MediaInfoList_##_Name=(MEDIAINFOLIST_##_Name)dlsym(Module, "MediaInfoList"MEDIAINFO_Ansi"_"_Name2); \
00143     if (MediaInfoList_##_Name==NULL) Errors++;
00144 #endif
00145 
00146 typedef void* (__stdcall *MEDIAINFO_New)(); static MEDIAINFO_New MediaInfo_New;
00147 typedef void* (__stdcall *MEDIAINFOLIST_New)(); static MEDIAINFOLIST_New MediaInfoList_New;
00148 typedef void (__stdcall *MEDIAINFO_Delete)(void*); static MEDIAINFO_Delete MediaInfo_Delete;
00149 typedef void (__stdcall *MEDIAINFOLIST_Delete)(void*); static MEDIAINFOLIST_Delete MediaInfoList_Delete;
00150 typedef size_t (__stdcall *MEDIAINFO_Open)(void*, const MediaInfo_Char*); static MEDIAINFO_Open MediaInfo_Open;
00151 typedef size_t (__stdcall *MEDIAINFOLIST_Open)(void*, const MediaInfo_Char*, const MediaInfo_fileoptions_C); static MEDIAINFOLIST_Open MediaInfoList_Open;
00152 typedef void (__stdcall *MEDIAINFO_Close)(void*); static MEDIAINFO_Close MediaInfo_Close;
00153 typedef void (__stdcall *MEDIAINFOLIST_Close)(void*, size_t); static MEDIAINFOLIST_Close MediaInfoList_Close;
00154 typedef const MediaInfo_Char* (__stdcall *MEDIAINFO_Inform)(void*, size_t Reserved); static MEDIAINFO_Inform MediaInfo_Inform;
00155 typedef const MediaInfo_Char* (__stdcall *MEDIAINFOLIST_Inform)(void*, size_t, size_t Reserved); static MEDIAINFOLIST_Inform MediaInfoList_Inform;
00156 typedef const MediaInfo_Char* (__stdcall *MEDIAINFO_GetI)(void*, MediaInfo_stream_C StreamKind, size_t StreamNumber, size_t Parameter, MediaInfo_info_C KindOfInfo); static MEDIAINFO_GetI MediaInfo_GetI;
00157 typedef const MediaInfo_Char* (__stdcall *MEDIAINFOLIST_GetI)(void*, size_t, MediaInfo_stream_C StreamKind, size_t StreamNumber, size_t Parameter, MediaInfo_info_C KindOfInfo); static MEDIAINFOLIST_GetI MediaInfoList_GetI;
00158 typedef const MediaInfo_Char* (__stdcall *MEDIAINFO_Get)(void*, MediaInfo_stream_C StreamKind, size_t StreamNumber, const MediaInfo_Char* Parameter, MediaInfo_info_C KindOfInfo, MediaInfo_info_C KindOfSearch); static MEDIAINFO_Get MediaInfo_Get;
00159 typedef const MediaInfo_Char* (__stdcall *MEDIAINFOLIST_Get)(void*, size_t, MediaInfo_stream_C StreamKind, size_t StreamNumber, const MediaInfo_Char* Parameter, MediaInfo_info_C KindOfInfo, MediaInfo_info_C KindOfSearch); static MEDIAINFOLIST_Get MediaInfoList_Get;
00160 typedef const MediaInfo_Char* (__stdcall *MEDIAINFO_Option)(void*, const MediaInfo_Char* Parameter, const MediaInfo_Char* Value); static MEDIAINFO_Option MediaInfo_Option;
00161 typedef const MediaInfo_Char* (__stdcall *MEDIAINFOLIST_Option)(void*, const MediaInfo_Char* Parameter, const MediaInfo_Char* Value); static MEDIAINFOLIST_Option MediaInfoList_Option;
00162 typedef size_t (__stdcall *MEDIAINFO_State_Get)(void*); static MEDIAINFO_State_Get MediaInfo_State_Get;
00163 typedef size_t (__stdcall *MEDIAINFOLIST_State_Get)(void*); static MEDIAINFOLIST_State_Get MediaInfoList_State_Get;
00164 typedef size_t (__stdcall *MEDIAINFO_Count_Get)(void*, MediaInfo_stream_C StreamKind, size_t StreamNumber); static MEDIAINFO_Count_Get MediaInfo_Count_Get;
00165 typedef size_t (__stdcall *MEDIAINFOLIST_Count_Get)(void*, size_t, MediaInfo_stream_C StreamKind, size_t StreamNumber); static MEDIAINFOLIST_Count_Get MediaInfoList_Count_Get;
00166 typedef size_t (__stdcall *MEDIAINFO_Count_Get_Files)(void*); static MEDIAINFO_Count_Get_Files MediaInfo_Count_Get_Files;
00167 typedef size_t (__stdcall *MEDIAINFOLIST_Count_Get_Files)(void*); static MEDIAINFOLIST_Count_Get_Files MediaInfoList_Count_Get_Files;
00168 
00169 static size_t MediaInfoDLL_Load()
00170 {
00171     if (Module_Count>0)
00172     {
00173         Module_Count++;
00174         return 1;
00175     }
00176 
00177     /* Load library */
00178     #ifdef MEDIAINFO_GLIBC
00179         Module=g_module_open(MEDIAINFODLL_NAME, G_MODULE_BIND_LAZY);
00180     #elif defined (_WIN32) || defined (WIN32)
00181         Module=LoadLibrary(_T(MEDIAINFODLL_NAME));
00182     #else
00183         Module=dlopen(MEDIAINFODLL_NAME, RTLD_LAZY);
00184         if (!Module)
00185             Module=dlopen("./"MEDIAINFODLL_NAME, RTLD_LAZY);
00186     #endif
00187     if (!Module)
00188         return -1;
00189 
00190     /* Load methods */
00191     size_t Errors=0;
00192     MEDIAINFO_ASSIGN(New,"New")
00193     MEDIAINFO_ASSIGN(Delete,"Delete")
00194     MEDIAINFO_ASSIGN(Open,"Open")
00195     MEDIAINFO_ASSIGN(Close,"Close")
00196     MEDIAINFO_ASSIGN(Inform,"Inform")
00197     MEDIAINFO_ASSIGN(GetI,"GetI")
00198     MEDIAINFO_ASSIGN(Get,"Get")
00199     MEDIAINFO_ASSIGN(Option,"Option")
00200     MEDIAINFO_ASSIGN(State_Get,"State_Get")
00201     MEDIAINFO_ASSIGN(Count_Get,"Count_Get")
00202     MEDIAINFO_ASSIGN(Count_Get_Files,"Count_Get_Files")
00203     if (Errors>1) //Normal for Count_Get_Files, MediaInfo has no one.
00204        return -1;
00205 
00206     Module_Count++;
00207     return 1;
00208 }
00209 
00210 static size_t MediaInfoDLL_IsLoaded()
00211 {
00212     if (Module)
00213         return 1;
00214     else
00215         return 0;
00216 }
00217 
00218 static void MediaInfoDLL_UnLoad()
00219 {
00220     Module_Count--;
00221     if (Module_Count>0)
00222         return;
00223 
00224     #ifdef MEDIAINFO_GLIBC
00225         g_module_close(Module);
00226     #elif defined (_WIN32) || defined (WIN32)
00227         FreeLibrary(Module);
00228     #else
00229         dlclose(Module);
00230     #endif
00231     Module=NULL;
00232 }
00233 
00234 #ifdef __cplusplus
00235 }
00236 #endif /*__cplusplus*/
00237 
00238 /***************************************************************************/
00239 /***************************************************************************/
00240 /***************************************************************************/
00241 
00242 #ifdef __cplusplus
00243 //DLL C++ wrapper for C functions
00244 
00245 //---------------------------------------------------------------------------
00246 #include <string>
00247 #include <sstream>
00248 //---------------------------------------------------------------------------
00249 
00250 namespace MediaInfoLib
00251 {
00252 
00253 //---------------------------------------------------------------------------
00254 //MediaInfo_Char types
00255 #undef  _T
00256 #define _T(__x)     __T(__x)
00257 #if defined(UNICODE) || defined (_UNICODE)
00258     typedef wchar_t Char;
00259     #undef  __T
00260     #define __T(__x) L ## __x
00261 #else
00262     typedef char Char;
00263     #undef  __T
00264     #define __T(__x) __x
00265 #endif
00266 typedef std::basic_string<Char>        String;
00267 typedef std::basic_stringstream<Char>  StringStream;
00268 typedef std::basic_istringstream<Char> tiStringStream;
00269 typedef std::basic_ostringstream<Char> toStringStream;
00270 const size_t Error=(size_t)(-1);
00271 //---------------------------------------------------------------------------
00272 
00273 //---------------------------------------------------------------------------
00275 enum stream_t
00276 {
00277     Stream_General,                 
00278     Stream_Video,                   
00279     Stream_Audio,                   
00280     Stream_Text,                    
00281     Stream_Chapters,                
00282     Stream_Image,                   
00283     Stream_Menu,                    
00284     Stream_Max,
00285 };
00286 
00288 enum info_t
00289 {
00290     Info_Name,                      
00291     Info_Text,                      
00292     Info_Measure,                   
00293     Info_Options,                   
00294     Info_Name_Text,                 
00295     Info_Measure_Text,              
00296     Info_Info,                      
00297     Info_HowTo,                     
00298     Info_Max
00299 };
00300 
00305 enum infooptions_t
00306 {
00307     InfoOption_ShowInInform,        
00308     InfoOption_Reserved,            
00309     InfoOption_ShowInSupported,     
00310     InfoOption_TypeOfValue,         
00311     InfoOption_Max
00312 };
00313 
00315 enum fileoptions_t
00316 {
00317     FileOption_Nothing      =0x00,
00318     FileOption_Recursive    =0x01,  
00319     FileOption_CloseAll     =0x02,  
00320     FileOption_Max          =0x04
00321 };
00322 
00323 const String Unable_Load_DLL=_T("Unable to load ")_T(MEDIAINFODLL_NAME);
00324 #define MEDIAINFO_TEST_VOID \
00325     if (!IsReady()) return
00326 #define MEDIAINFO_TEST_INT \
00327     if (!IsReady()) return 0
00328 #define MEDIAINFO_TEST_STRING \
00329     if (!IsReady()) return Unable_Load_DLL
00330 #define MEDIAINFO_TEST_STRING_STATIC \
00331     if (!Module) return Unable_Load_DLL
00332 
00333 //---------------------------------------------------------------------------
00334 class MediaInfo
00335 {
00336 public :
00337     MediaInfo ()                {if (!Module) MediaInfoDLL_Load(); if (!Module) {Handle=NULL; return;}; Handle=MediaInfo_New();};
00338     ~MediaInfo ()               {MEDIAINFO_TEST_VOID; MediaInfo_Delete(Handle);};
00339 
00340     //File
00341     size_t Open (const String &File) {MEDIAINFO_TEST_INT; return MediaInfo_Open(Handle, File.c_str());};
00342     //size_t Open (const unsigned char* Begin, size_t Begin_Size, const unsigned char* End=NULL, size_t End_Size=NULL) {MEDIAINFO_TEST_INT; return MediaInfo_Open_Buffer(Handle, Begin, Begin_Size, End, End_Size);};
00343     //size_t Save () {MEDIAINFO_TEST_INT; return MediaInfo_Save(Handle);};
00344     void Close () {MEDIAINFO_TEST_VOID; return MediaInfo_Close(Handle);};
00345 
00346     //General information
00347     String Inform ()  {MEDIAINFO_TEST_STRING; return MediaInfo_Inform(Handle, 0);};
00348     String Get (stream_t StreamKind, size_t StreamNumber, size_t Parameter, info_t InfoKind=Info_Text)  {MEDIAINFO_TEST_STRING; return MediaInfo_GetI (Handle, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter, (MediaInfo_info_C)InfoKind);};
00349     String Get (stream_t StreamKind, size_t StreamNumber, const String &Parameter, info_t InfoKind=Info_Text, info_t SearchKind=Info_Name)  {MEDIAINFO_TEST_STRING; return MediaInfo_Get (Handle, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter.c_str(), (MediaInfo_info_C)InfoKind, (MediaInfo_info_C)SearchKind);};
00350     //size_t Set (const String &ToSet, stream_t StreamKind, size_t StreamNumber, size_t Parameter, const String &OldValue=_T(""))  {MEDIAINFO_TEST_INT; return MediaInfo_SetI (Handle, ToSet.c_str(), (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter, OldValue.c_str());};
00351     //size_t Set (const String &ToSet, stream_t StreamKind, size_t StreamNumber, const String &Parameter, const String &OldValue=_T(""))  {MEDIAINFO_TEST_INT; return MediaInfo_Set (Handle, ToSet.c_str(), (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter.c_str(), OldValue.c_str());};
00352     String        Option (const String &Option, const String &Value=_T(""))  {MEDIAINFO_TEST_STRING; return MediaInfo_Option (Handle, Option.c_str(), Value.c_str());};
00353     static String Option_Static (const String &Option, const String &Value=_T(""))  {MEDIAINFO_TEST_STRING_STATIC; return MediaInfo_Option (NULL, Option.c_str(), Value.c_str());};
00354     size_t                  State_Get ()  {MEDIAINFO_TEST_INT; return MediaInfo_State_Get(Handle);};
00355     size_t                  Count_Get (stream_t StreamKind, size_t StreamNumber=-1)  {MEDIAINFO_TEST_INT; return MediaInfo_Count_Get(Handle, (MediaInfo_stream_C)StreamKind, StreamNumber);};
00356 
00357     bool IsReady() {return (Handle && Module)?true:false;}
00358 
00359 private :
00360     void* Handle;
00361 };
00362 
00363 class MediaInfoList
00364 {
00365 public :
00366     MediaInfoList ()                {MediaInfoDLL_Load(); if (!MediaInfoDLL_IsLoaded()) {Handle=NULL; return;}; Handle=MediaInfoList_New();};
00367     ~MediaInfoList ()               {MEDIAINFO_TEST_VOID; MediaInfoList_Delete(Handle); MediaInfoDLL_UnLoad();};
00368 
00369     //File
00370     size_t Open (const String &File, const fileoptions_t Options=FileOption_Nothing) {MEDIAINFO_TEST_INT; return MediaInfoList_Open(Handle, File.c_str(), (MediaInfo_fileoptions_C)Options);};
00371     //size_t Open (const unsigned char* Begin, size_t Begin_Size, const unsigned char* End=NULL, size_t End_Size=NULL) {MEDIAINFO_TEST_INT; return MediaInfoList_Open_Buffer(Handle, Begin, Begin_Size, End, End_Size);};
00372     //size_t Save (size_t FilePos) {MEDIAINFO_TEST_INT; return MediaInfoList_Save(Handle, FilePos);};
00373     void Close (size_t FilePos=(size_t)-1) {MEDIAINFO_TEST_VOID; return MediaInfoList_Close(Handle, FilePos);};
00374 
00375     //General information
00376     String Inform (size_t FilePos=(size_t)-1)  {MEDIAINFO_TEST_STRING; return MediaInfoList_Inform(Handle, FilePos, 0);};
00377     String Get (size_t FilePos, stream_t StreamKind, size_t StreamNumber, size_t Parameter, info_t InfoKind=Info_Text)  {MEDIAINFO_TEST_STRING; return MediaInfoList_GetI (Handle, FilePos, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter, (MediaInfo_info_C)InfoKind);};
00378     String Get (size_t FilePos, stream_t StreamKind, size_t StreamNumber, const String &Parameter, info_t InfoKind=Info_Text, info_t SearchKind=Info_Name)  {MEDIAINFO_TEST_STRING; return MediaInfoList_Get (Handle, FilePos, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter.c_str(), (MediaInfo_info_C)InfoKind, (MediaInfo_info_C)SearchKind);};
00379     //size_t Set (const String &ToSet, size_t FilePos, stream_t StreamKind, size_t StreamNumber, size_t Parameter, const String &OldValue=_T(""))  {MEDIAINFO_TEST_INT; return MediaInfoList_SetI (Handle, ToSet.c_str(), FilePos, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter, OldValue.c_str());};
00380     //size_t Set (const String &ToSet, size_t FilePos, stream_t StreamKind, size_t StreamNumber, const String &Parameter, const String &OldValue=_T(""))  {MEDIAINFO_TEST_INT; return MediaInfoList_Set (Handle, ToSet.c_str(), FilePos, (MediaInfo_stream_C)StreamKind, StreamNumber, Parameter.c_str(), OldValue.c_str());};
00381     String        Option (const String &Option, const String &Value=_T(""))  {MEDIAINFO_TEST_STRING; return MediaInfoList_Option (Handle, Option.c_str(), Value.c_str());};
00382     static String Option_Static (const String &Option, const String &Value=_T(""))  {MEDIAINFO_TEST_STRING_STATIC; return MediaInfoList_Option (NULL, Option.c_str(), Value.c_str());};
00383     size_t        State_Get ()  {MEDIAINFO_TEST_INT; return MediaInfoList_State_Get(Handle);};
00384     size_t        Count_Get (size_t FilePos, stream_t StreamKind, size_t StreamNumber=-1)  {MEDIAINFO_TEST_INT; return MediaInfoList_Count_Get(Handle, FilePos, (MediaInfo_stream_C)StreamKind, StreamNumber);};
00385     size_t        Count_Get ()  {MEDIAINFO_TEST_INT; return MediaInfoList_Count_Get_Files(Handle);};
00386 
00387     bool IsReady() {return (Handle && Module)?true:false;}
00388 
00389 private :
00390     void* Handle;
00391 };
00392 
00393 } //NameSpace
00394 #endif /*__cplusplus*/
00395 
00396 #endif

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