diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/src/dl_loader.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/src/dl_loader.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/src/dl_loader.c b/debian/transcode/transcode-1.1.7/src/dl_loader.c new file mode 100644 index 00000000..3b4b9b8e --- /dev/null +++ b/debian/transcode/transcode-1.1.7/src/dl_loader.c @@ -0,0 +1,223 @@ +/* + * dl_loader.c + * + * Copyright (C) Thomas Oestreich - June 2001 + * + * This file is part of transcode, a video stream processing tool + * + * transcode is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * transcode is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef HAVE_DLFCN_H +#include <dlfcn.h> +#else +# ifdef OS_DARWIN +# include "libdldarwin/dlfcn.h" +# endif +#endif + +#include "transcode.h" +#include "dl_loader.h" + +const char *mod_path = MOD_PATH; + +char module[TC_BUF_MAX]; + +int (*TCV_export)(int opt, void *para1, void *para2); +int (*TCA_export)(int opt, void *para1, void *para2); +int (*TCV_import)(int opt, void *para1, void *para2); +int (*TCA_import)(int opt, void *para1, void *para2); + +static void watch_export_module(const char *s, int opt, transfer_t *para) +{ + tc_log_msg(__FILE__, "module=%s [option=%02d, flag=%d]", s, opt, ((para==NULL)? -1:para->flag)); +} + +static void watch_import_module(const char *s, int opt, transfer_t *para) +{ + tc_log_msg(__FILE__, "module=%s [option=%02d, flag=%d]", s, opt, ((para==NULL)? -1:para->flag)); + fflush(stdout); +} + +int tcv_export(int opt, void *para1, void *para2) +{ + + int ret; + + if(verbose & TC_WATCH) + watch_export_module("tcv_export", opt, (transfer_t*) para1); + + ret = TCV_export(opt, para1, para2); + + if(ret==TC_EXPORT_ERROR && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "video export module error"); + + if(ret==TC_EXPORT_UNKNOWN && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "option %d unsupported by video export module", opt); + + return(ret); +} + +int tca_export(int opt, void *para1, void *para2) +{ + + int ret; + + if(verbose & TC_WATCH) + watch_export_module("tca_export", opt, (transfer_t*) para1); + + ret = TCA_export(opt, para1, para2); + + if(ret==TC_EXPORT_ERROR && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "audio export module error"); + + if(ret==TC_EXPORT_UNKNOWN && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "option %d unsupported by audio export module", opt); + + return(ret); +} + +int tcv_import(int opt, void *para1, void *para2) +{ + + int ret; + + if(verbose & TC_WATCH) + watch_import_module("tcv_import", opt, (transfer_t*) para1); + + ret = TCV_import(opt, para1, para2); + + if(ret==TC_IMPORT_ERROR && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "video import module error"); + + if(ret==TC_IMPORT_UNKNOWN && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "option %d unsupported by video import module", opt); + + return(ret); +} + +int tca_import(int opt, void *para1, void *para2) +{ + int ret; + + if(verbose & TC_WATCH) + watch_import_module("tca_import", opt, (transfer_t*) para1); + + ret = TCA_import(opt, para1, para2); + + if(ret==TC_IMPORT_ERROR && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "audio import module error"); + + if(ret==TC_IMPORT_UNKNOWN && (verbose & TC_DEBUG)) + tc_log_msg(__FILE__, "option %d unsupported by audio import module", opt); + + return(ret); +} + + +void *load_module(const char *mod_name, int mode) +{ + const char *error; + void *handle; + + if(mode & TC_EXPORT) { + + tc_snprintf(module, sizeof(module), "%s/export_%s.so", ((mod_path==NULL)? TC_DEFAULT_MOD_PATH:mod_path), mod_name); + + if(verbose & TC_DEBUG) + tc_log_msg(__FILE__, "loading %s export module %s", ((mode & TC_VIDEO)? "video": "audio"), module); + + handle = dlopen(module, RTLD_GLOBAL| RTLD_LAZY); + + if (!handle) { + error=dlerror(); + tc_warn("%s", error); + tc_warn("(%s) loading \"%s\" failed", __FILE__, module); + return(NULL); + } + + if(mode & TC_VIDEO) { + TCV_export = dlsym(handle, "tc_export"); + error = dlerror(); + if (error != NULL) { + tc_warn("%s", error); + return(NULL); + } + } + + if(mode & TC_AUDIO) { + TCA_export = dlsym(handle, "tc_export"); + error = dlerror(); + if (error != NULL) { + tc_warn("%s", error); + return(NULL); + } + } + + return(handle); + } + + + if(mode & TC_IMPORT) { + + tc_snprintf(module, sizeof(module), "%s/import_%s.so", ((mod_path==NULL)? TC_DEFAULT_MOD_PATH:mod_path), mod_name); + + if(verbose & TC_DEBUG) + tc_log_msg(__FILE__, "loading %s import module %s", ((mode & TC_VIDEO)? "video": "audio"), module); + + handle = dlopen(module, RTLD_GLOBAL| RTLD_LAZY); + + if (!handle) { + error = dlerror(); + tc_warn("%s", error); + return(NULL); + } + + if(mode & TC_VIDEO) { + TCV_import = dlsym(handle, "tc_import"); + if ((error = dlerror()) != NULL) { + tc_warn("%s", error); + return(NULL); + } + } + + + if(mode & TC_AUDIO) { + TCA_import = dlsym(handle, "tc_import"); + if ((error = dlerror()) != NULL) { + tc_warn("%s", error); + return(NULL); + } + } + + return(handle); + } + + // wrong mode? + return(NULL); +} + +void unload_module(void *handle) +{ + if (dlclose(handle) != 0) { + perror("unloading module"); + } + handle=NULL; +} + |