git.sesse.net Git - vlc/blob - src/misc/modules_plugin.h

   1 /*****************************************************************************
   2  * modules_plugin.h : Plugin management functions used by the core application.
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * Automatically generated from src/misc/modules_plugin.h.in by bootstrap.sh
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Inline functions for handling dynamic modules
  26  *****************************************************************************/
  27
  28 /*****************************************************************************
  29  * module_load: load a dynamic library
  30  *****************************************************************************
  31  * This function loads a dynamically linked library using a system dependant
  32  * method, and returns a non-zero value on error, zero otherwise.
  33  *****************************************************************************/
  34 static inline int module_load( const char * psz_filename,
  35                                module_handle_t * handle )
  36 {
  37 #ifdef SYS_BEOS
  38     *handle = load_add_on( psz_filename );
  39     return( *handle < 0 );
  40
  41 #elif defined(WIN32)
  42     *handle = LoadLibrary( psz_filename );
  43     return( *handle == NULL );
  44
  45 #elif defined(RTLD_NOW)
  46 #   if defined(SYS_LINUX)
  47     /* We should NOT open modules with RTLD_GLOBAL, or we are going to get
  48      * namespace collisions when two modules have common public symbols,
  49      * but ALSA is being a pest here. */
  50     if( strstr( psz_filename, "alsa.so" ) )
  51     {
  52         *handle = dlopen( psz_filename, RTLD_NOW | RTLD_GLOBAL );
  53         return( *handle == NULL );
  54     }
  55 #   endif
  56     *handle = dlopen( psz_filename, RTLD_NOW );
  57     return( *handle == NULL );
  58
  59 #else
  60     *handle = dlopen( psz_filename, DL_LAZY );
  61     return( *handle == NULL );
  62
  63 #endif
  64 }
  65
  66 /*****************************************************************************
  67  * module_unload: unload a dynamic library
  68  *****************************************************************************
  69  * This function unloads a previously opened dynamically linked library
  70  * using a system dependant method. No return value is taken in consideration,
  71  * since some libraries sometimes refuse to close properly.
  72  *****************************************************************************/
  73 static inline void module_unload( module_handle_t handle )
  74 {
  75 #ifdef SYS_BEOS
  76     unload_add_on( handle );
  77
  78 #elif defined(WIN32)
  79     FreeLibrary( handle );
  80
  81 #else
  82     dlclose( handle );
  83
  84 #endif
  85     return;
  86 }
  87
  88 /*****************************************************************************
  89  * module_getsymbol: get a symbol from a dynamic library
  90  *****************************************************************************
  91  * This function queries a loaded library for a symbol specified in a
  92  * string, and returns a pointer to it. We don't check for dlerror() or
  93  * similar functions, since we want a non-NULL symbol anyway.
  94  *****************************************************************************/
  95 static inline void * _module_getsymbol( module_handle_t handle,
  96                                         const char * psz_function )
  97 {
  98 #ifdef SYS_BEOS
  99     void * p_symbol;
 100     if( B_OK == get_image_symbol( handle, psz_function,
 101                                   B_SYMBOL_TYPE_TEXT, &p_symbol ) )
 102     {
 103         return( p_symbol );
 104     }
 105     else
 106     {
 107         return( NULL );
 108     }
 109
 110 #elif defined(WIN32)
 111     return( (void *)GetProcAddress( handle, psz_function ) );
 112
 113 #else
 114     return( dlsym( handle, psz_function ) );
 115
 116 #endif
 117 }
 118
 119 static inline void * module_getsymbol( module_handle_t handle,
 120                                        const char * psz_function )
 121 {
 122     void * p_symbol = _module_getsymbol( handle, psz_function );
 123
 124     /* MacOS X dl library expects symbols to begin with "_". So do
 125      * some other operating systems. That's really lame, but hey, what
 126      * can we do ? */
 127     if( p_symbol == NULL )
 128     {
 129         char *psz_call = malloc( strlen( psz_function ) + 2 );
 130
 131         strcpy( psz_call + 1, psz_function );
 132         psz_call[ 0 ] = '_';
 133         p_symbol = _module_getsymbol( handle, psz_call );
 134         free( psz_call );
 135     }
 136
 137     return p_symbol;
 138 }
 139
 140 /*****************************************************************************
 141  * module_error: wrapper for dlerror()
 142  *****************************************************************************
 143  * This function returns the error message of the last module operation. It
 144  * returns the string "failed" on systems which do not have a dlerror() like
 145  * function. psz_buffer can be used to store temporary data, it is guaranteed
 146  * to be kept intact until the return value of module_error has been used.
 147  *****************************************************************************/
 148 static inline const char * module_error( char *psz_buffer )
 149 {
 150 #if defined(SYS_BEOS)
 151     return( "failed" );
 152
 153 #elif defined(WIN32)
 154     int i, i_error = GetLastError();
 155
 156     FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
 157                    NULL, i_error, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
 158                    (LPTSTR) psz_buffer, 256, NULL);
 159
 160     /* Go to the end of the string */
 161     for( i = 0;
 162          psz_buffer[i] && psz_buffer[i] != '\r' && psz_buffer[i] != '\n';
 163          i++ ) {};
 164
 165     if( psz_buffer[i] )
 166     {
 167         snprintf( psz_buffer + i, 256 - i, " (error %i)", i_error );
 168         psz_buffer[ 255 ] = '\0';
 169     }
 170
 171     return psz_buffer;
 172
 173 #else
 174     return( dlerror() );
 175
 176 #endif
 177 }
 178
 179 /*****************************************************************************
 180  * STORE_SYMBOLS: store known symbols into p_symbols for plugin access.
 181  *****************************************************************************/
 182 #define STORE_SYMBOLS( p_symbols ) \
 183     (p_symbols)->__aout_NewInstance_inner = __aout_NewInstance; \
 184     (p_symbols)->aout_DeleteInstance_inner = aout_DeleteInstance; \
 185     (p_symbols)->aout_BufferNew_inner = aout_BufferNew; \
 186     (p_symbols)->aout_BufferDelete_inner = aout_BufferDelete; \
 187     (p_symbols)->aout_BufferPlay_inner = aout_BufferPlay; \
 188     (p_symbols)->__aout_InputNew_inner = __aout_InputNew; \
 189     (p_symbols)->aout_InputDelete_inner = aout_InputDelete; \
 190     (p_symbols)->aout_OutputNextBuffer_inner = aout_OutputNextBuffer; \
 191     (p_symbols)->__config_GetInt_inner = __config_GetInt; \
 192     (p_symbols)->__config_PutInt_inner = __config_PutInt; \
 193     (p_symbols)->__config_GetFloat_inner = __config_GetFloat; \
 194     (p_symbols)->__config_PutFloat_inner = __config_PutFloat; \
 195     (p_symbols)->__config_GetPsz_inner = __config_GetPsz; \
 196     (p_symbols)->__config_PutPsz_inner = __config_PutPsz; \
 197     (p_symbols)->__config_LoadCmdLine_inner = __config_LoadCmdLine; \
 198     (p_symbols)->config_GetHomeDir_inner = config_GetHomeDir; \
 199     (p_symbols)->__config_LoadConfigFile_inner = __config_LoadConfigFile; \
 200     (p_symbols)->__config_SaveConfigFile_inner = __config_SaveConfigFile; \
 201     (p_symbols)->config_FindConfig_inner = config_FindConfig; \
 202     (p_symbols)->config_Duplicate_inner = config_Duplicate; \
 203     (p_symbols)->config_SetCallbacks_inner = config_SetCallbacks; \
 204     (p_symbols)->config_UnsetCallbacks_inner = config_UnsetCallbacks; \
 205     (p_symbols)->InitBitstream_inner = InitBitstream; \
 206     (p_symbols)->NextDataPacket_inner = NextDataPacket; \
 207     (p_symbols)->BitstreamNextDataPacket_inner = BitstreamNextDataPacket; \
 208     (p_symbols)->UnalignedShowBits_inner = UnalignedShowBits; \
 209     (p_symbols)->UnalignedRemoveBits_inner = UnalignedRemoveBits; \
 210     (p_symbols)->UnalignedGetBits_inner = UnalignedGetBits; \
 211     (p_symbols)->CurrentPTS_inner = CurrentPTS; \
 212     (p_symbols)->DecoderError_inner = DecoderError; \
 213     (p_symbols)->__input_SetStatus_inner = __input_SetStatus; \
 214     (p_symbols)->__input_Seek_inner = __input_Seek; \
 215     (p_symbols)->__input_Tell_inner = __input_Tell; \
 216     (p_symbols)->input_DumpStream_inner = input_DumpStream; \
 217     (p_symbols)->input_OffsetToTime_inner = input_OffsetToTime; \
 218     (p_symbols)->input_ToggleES_inner = input_ToggleES; \
 219     (p_symbols)->input_ChangeArea_inner = input_ChangeArea; \
 220     (p_symbols)->input_ChangeProgram_inner = input_ChangeProgram; \
 221     (p_symbols)->input_InitStream_inner = input_InitStream; \
 222     (p_symbols)->input_EndStream_inner = input_EndStream; \
 223     (p_symbols)->input_FindProgram_inner = input_FindProgram; \
 224     (p_symbols)->input_AddProgram_inner = input_AddProgram; \
 225     (p_symbols)->input_DelProgram_inner = input_DelProgram; \
 226     (p_symbols)->input_SetProgram_inner = input_SetProgram; \
 227     (p_symbols)->input_AddArea_inner = input_AddArea; \
 228     (p_symbols)->input_DelArea_inner = input_DelArea; \
 229     (p_symbols)->input_FindES_inner = input_FindES; \
 230     (p_symbols)->input_AddES_inner = input_AddES; \
 231     (p_symbols)->input_DelES_inner = input_DelES; \
 232     (p_symbols)->input_SelectES_inner = input_SelectES; \
 233     (p_symbols)->input_UnselectES_inner = input_UnselectES; \
 234     (p_symbols)->input_DecodePES_inner = input_DecodePES; \
 235     (p_symbols)->input_ClockManageControl_inner = input_ClockManageControl; \
 236     (p_symbols)->input_ClockManageRef_inner = input_ClockManageRef; \
 237     (p_symbols)->input_ClockGetTS_inner = input_ClockGetTS; \
 238     (p_symbols)->input_InfoCategory_inner = input_InfoCategory; \
 239     (p_symbols)->input_AddInfo_inner = input_AddInfo; \
 240     (p_symbols)->input_BuffersEnd_inner = input_BuffersEnd; \
 241     (p_symbols)->input_NewBuffer_inner = input_NewBuffer; \
 242     (p_symbols)->input_ReleaseBuffer_inner = input_ReleaseBuffer; \
 243     (p_symbols)->input_ShareBuffer_inner = input_ShareBuffer; \
 244     (p_symbols)->input_NewPacket_inner = input_NewPacket; \
 245     (p_symbols)->input_DeletePacket_inner = input_DeletePacket; \
 246     (p_symbols)->input_NewPES_inner = input_NewPES; \
 247     (p_symbols)->input_DeletePES_inner = input_DeletePES; \
 248     (p_symbols)->input_FillBuffer_inner = input_FillBuffer; \
 249     (p_symbols)->input_Peek_inner = input_Peek; \
 250     (p_symbols)->input_SplitBuffer_inner = input_SplitBuffer; \
 251     (p_symbols)->input_AccessInit_inner = input_AccessInit; \
 252     (p_symbols)->input_AccessReinit_inner = input_AccessReinit; \
 253     (p_symbols)->input_AccessEnd_inner = input_AccessEnd; \
 254     (p_symbols)->__input_FDClose_inner = __input_FDClose; \
 255     (p_symbols)->__input_FDNetworkClose_inner = __input_FDNetworkClose; \
 256     (p_symbols)->input_FDRead_inner = input_FDRead; \
 257     (p_symbols)->input_FDNetworkRead_inner = input_FDNetworkRead; \
 258     (p_symbols)->input_FDSeek_inner = input_FDSeek; \
 259     (p_symbols)->__intf_Create_inner = __intf_Create; \
 260     (p_symbols)->intf_RunThread_inner = intf_RunThread; \
 261     (p_symbols)->intf_StopThread_inner = intf_StopThread; \
 262     (p_symbols)->intf_Destroy_inner = intf_Destroy; \
 263     (p_symbols)->__intf_Eject_inner = __intf_Eject; \
 264     (p_symbols)->GetLang_1_inner = GetLang_1; \
 265     (p_symbols)->GetLang_2T_inner = GetLang_2T; \
 266     (p_symbols)->GetLang_2B_inner = GetLang_2B; \
 267     (p_symbols)->DecodeLanguage_inner = DecodeLanguage; \
 268     (p_symbols)->__module_Need_inner = __module_Need; \
 269     (p_symbols)->__module_Unneed_inner = __module_Unneed; \
 270     (p_symbols)->mstrtime_inner = mstrtime; \
 271     (p_symbols)->mdate_inner = mdate; \
 272     (p_symbols)->mwait_inner = mwait; \
 273     (p_symbols)->msleep_inner = msleep; \
 274     (p_symbols)->__network_ChannelJoin_inner = __network_ChannelJoin; \
 275     (p_symbols)->__network_ChannelCreate_inner = __network_ChannelCreate; \
 276     (p_symbols)->__vout_CreateThread_inner = __vout_CreateThread; \
 277     (p_symbols)->vout_DestroyThread_inner = vout_DestroyThread; \
 278     (p_symbols)->vout_ChromaCmp_inner = vout_ChromaCmp; \
 279     (p_symbols)->vout_CreatePicture_inner = vout_CreatePicture; \
 280     (p_symbols)->vout_AllocatePicture_inner = vout_AllocatePicture; \
 281     (p_symbols)->vout_DestroyPicture_inner = vout_DestroyPicture; \
 282     (p_symbols)->vout_DisplayPicture_inner = vout_DisplayPicture; \
 283     (p_symbols)->vout_DatePicture_inner = vout_DatePicture; \
 284     (p_symbols)->vout_LinkPicture_inner = vout_LinkPicture; \
 285     (p_symbols)->vout_UnlinkPicture_inner = vout_UnlinkPicture; \
 286     (p_symbols)->vout_PlacePicture_inner = vout_PlacePicture; \
 287     (p_symbols)->vout_CreateSubPicture_inner = vout_CreateSubPicture; \
 288     (p_symbols)->vout_DestroySubPicture_inner = vout_DestroySubPicture; \
 289     (p_symbols)->vout_DisplaySubPicture_inner = vout_DisplaySubPicture; \
 290     (p_symbols)->__msg_Generic_inner = __msg_Generic; \
 291     (p_symbols)->__msg_Info_inner = __msg_Info; \
 292     (p_symbols)->__msg_Err_inner = __msg_Err; \
 293     (p_symbols)->__msg_Warn_inner = __msg_Warn; \
 294     (p_symbols)->__msg_Dbg_inner = __msg_Dbg; \
 295     (p_symbols)->__msg_Subscribe_inner = __msg_Subscribe; \
 296     (p_symbols)->__msg_Unsubscribe_inner = __msg_Unsubscribe; \
 297     (p_symbols)->__vlc_object_create_inner = __vlc_object_create; \
 298     (p_symbols)->__vlc_object_destroy_inner = __vlc_object_destroy; \
 299     (p_symbols)->__vlc_object_find_inner = __vlc_object_find; \
 300     (p_symbols)->__vlc_object_yield_inner = __vlc_object_yield; \
 301     (p_symbols)->__vlc_object_release_inner = __vlc_object_release; \
 302     (p_symbols)->__vlc_object_detach_inner = __vlc_object_detach; \
 303     (p_symbols)->__vlc_object_detach_all_inner = __vlc_object_detach_all; \
 304     (p_symbols)->__vlc_object_attach_inner = __vlc_object_attach; \
 305     (p_symbols)->__vlc_dumpstructure_inner = __vlc_dumpstructure; \
 306     (p_symbols)->playlist_Command_inner = playlist_Command; \
 307     (p_symbols)->playlist_Add_inner = playlist_Add; \
 308     (p_symbols)->playlist_Delete_inner = playlist_Delete; \
 309     (p_symbols)->__vlc_threads_init_inner = __vlc_threads_init; \
 310     (p_symbols)->__vlc_threads_end_inner = __vlc_threads_end; \
 311     (p_symbols)->__vlc_mutex_init_inner = __vlc_mutex_init; \
 312     (p_symbols)->__vlc_mutex_destroy_inner = __vlc_mutex_destroy; \
 313     (p_symbols)->__vlc_cond_init_inner = __vlc_cond_init; \
 314     (p_symbols)->__vlc_cond_destroy_inner = __vlc_cond_destroy; \
 315     (p_symbols)->__vlc_thread_create_inner = __vlc_thread_create; \
 316     (p_symbols)->__vlc_thread_ready_inner = __vlc_thread_ready; \
 317     (p_symbols)->__vlc_thread_join_inner = __vlc_thread_join; \
 318