--- /dev/null
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Mupen64plus-ui-console - plugin.c *
+ * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ *
+ * Copyright (C) 2009 Richard42 *
+ * *
+ * This program 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 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program 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 this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "m64p_types.h"
+#include "m64p_common.h"
+#include "core_interface.h"
+#include "osal_dynamiclib.h"
+#include "osal_files.h"
+#include "plugin.h"
+#include "main.h" /* for the debug callback function */
+#include "version.h"
+
+/* global variables */
+const char *g_PluginDir = NULL;
+const char *g_GfxPlugin = NULL; // pointer to graphics plugin specified at commandline (if any)
+const char *g_AudioPlugin = NULL; // pointer to audio plugin specified at commandline (if any)
+const char *g_InputPlugin = NULL; // pointer to input plugin specified at commandline (if any)
+const char *g_RspPlugin = NULL; // pointer to rsp plugin specified at commandline (if any)
+
+plugin_map_node g_PluginMap[] = {{M64PLUGIN_GFX, "Video", NULL, "", NULL, 0 },
+ {M64PLUGIN_AUDIO, "Audio", NULL, "", NULL, 0 },
+ {M64PLUGIN_INPUT, "Input", NULL, "", NULL, 0 },
+ {M64PLUGIN_RSP, "RSP", NULL, "", NULL, 0 } };
+
+/* local functions */
+static m64p_error PluginLoadTry(const char *filepath, int MapIndex)
+{
+ /* try to open a shared library at the given filepath */
+ m64p_dynlib_handle handle;
+ m64p_error rval = osal_dynlib_open(&handle, filepath);
+ if (rval != M64ERR_SUCCESS)
+ return rval;
+
+ /* call the GetVersion function for the plugin and check compatibility */
+ ptr_PluginGetVersion PluginGetVersion = (ptr_PluginGetVersion) osal_dynlib_getproc(handle, "PluginGetVersion");
+ if (PluginGetVersion == NULL)
+ {
+ if (g_Verbose)
+ DebugMessage(M64MSG_ERROR, "library '%s' is not a Mupen64Plus library.", filepath);
+ osal_dynlib_close(handle);
+ return M64ERR_INCOMPATIBLE;
+ }
+ m64p_plugin_type PluginType = (m64p_plugin_type) 0;
+ int PluginVersion = 0;
+ const char *PluginName = NULL;
+ (*PluginGetVersion)(&PluginType, &PluginVersion, NULL, &PluginName, NULL);
+ if (PluginType != g_PluginMap[MapIndex].type)
+ {
+ /* the type of this plugin doesn't match with the type that was requested by the caller */
+ osal_dynlib_close(handle);
+ return M64ERR_INCOMPATIBLE;
+ }
+ /* the front-end doesn't talk to the plugins, so we don't care about the plugin version or api version */
+
+ /* call the plugin's initialization function and make sure it starts okay */
+ ptr_PluginStartup PluginStartup = (ptr_PluginStartup) osal_dynlib_getproc(handle, "PluginStartup");
+ if (PluginStartup == NULL)
+ {
+ DebugMessage(M64MSG_ERROR, "library '%s' broken. No PluginStartup() function found.", filepath);
+ osal_dynlib_close(handle);
+ return M64ERR_INCOMPATIBLE;
+ }
+ rval = (*PluginStartup)(CoreHandle, g_PluginMap[MapIndex].name, DebugCallback); /* DebugCallback is in main.c */
+ if (rval != M64ERR_SUCCESS)
+ {
+ DebugMessage(M64MSG_ERROR, "Error: %s plugin library '%s' failed to start.", g_PluginMap[MapIndex].name, filepath);
+ osal_dynlib_close(handle);
+ return rval;
+ }
+
+ /* plugin loaded successfully, so set the plugin map's members */
+ g_PluginMap[MapIndex].handle = handle;
+ strcpy(g_PluginMap[MapIndex].filename, filepath);
+ g_PluginMap[MapIndex].libname = PluginName;
+ g_PluginMap[MapIndex].libversion = PluginVersion;
+
+ return M64ERR_SUCCESS;
+}
+
+/* global functions */
+m64p_error PluginSearchLoad(m64p_handle ConfigUI)
+{
+ osal_lib_search *lib_filelist = NULL;
+ int i;
+
+ /* start by checking the directory given on the command line */
+ if (g_PluginDir != NULL)
+ {
+ lib_filelist = osal_library_search(g_PluginDir);
+ if (lib_filelist == NULL)
+ {
+ DebugMessage(M64MSG_ERROR, "No plugins found in --plugindir path: %s", g_PluginDir);
+ return M64ERR_INPUT_NOT_FOUND;
+ }
+ }
+
+ /* if no plugins found, search the PluginDir in the UI-console section of the config file */
+ if (lib_filelist == NULL)
+ {
+ const char *plugindir = (*ConfigGetParamString)(ConfigUI, "PluginDir");
+ lib_filelist = osal_library_search(plugindir);
+ }
+
+ /* if still no plugins found, search some common system folders */
+ if (lib_filelist == NULL)
+ {
+ for (i = 0; i < osal_libsearchdirs; i++)
+ {
+ lib_filelist = osal_library_search(osal_libsearchpath[i]);
+ if (lib_filelist != NULL)
+ break;
+ }
+ }
+
+ /* try to load one of each type of plugin */
+ for (i = 0; i < 4; i++)
+ {
+ m64p_plugin_type type = g_PluginMap[i].type;
+ const char *cmdline_path = NULL;
+ const char *config_var = NULL;
+ int use_dummy = 0;
+ switch (type)
+ {
+ case M64PLUGIN_RSP: cmdline_path = g_RspPlugin; config_var = "RspPlugin"; break;
+ case M64PLUGIN_GFX: cmdline_path = g_GfxPlugin; config_var = "VideoPlugin"; break;
+ case M64PLUGIN_AUDIO: cmdline_path = g_AudioPlugin; config_var = "AudioPlugin"; break;
+ case M64PLUGIN_INPUT: cmdline_path = g_InputPlugin; config_var = "InputPlugin"; break;
+ default: cmdline_path = NULL; config_var = "";
+ }
+ /* first search for a plugin matching what was given on the command line */
+ if (cmdline_path != NULL)
+ {
+ /* if full path was given, try loading exactly this file */
+ if (strchr(cmdline_path, OSAL_DIR_SEPARATOR) != NULL)
+ {
+ PluginLoadTry(cmdline_path, i);
+ }
+ else if (strcmp(cmdline_path, "dummy") == 0)
+ {
+ use_dummy = 1;
+ }
+ else /* otherwise search through the plugin directory to find a match with this name */
+ {
+ osal_lib_search *curr = lib_filelist;
+ while (curr != NULL && g_PluginMap[i].handle == NULL)
+ {
+ if (strncmp(curr->filename, cmdline_path, strlen(cmdline_path)) == 0)
+ PluginLoadTry(curr->filepath, i);
+ curr = curr->next;
+ }
+ }
+ /* exit with error if we couldn't find the specified plugin */
+ if (!use_dummy && g_PluginMap[i].handle == NULL)
+ {
+ DebugMessage(M64MSG_ERROR, "Specified %s plugin not found: %s", g_PluginMap[i].name, cmdline_path);
+ osal_free_lib_list(lib_filelist);
+ return M64ERR_INPUT_NOT_FOUND;
+ }
+ }
+ else /* otherwise search for a plugin specified in the config file */
+ {
+ const char *config_path = (*ConfigGetParamString)(ConfigUI, config_var);
+ if (config_path != NULL && strlen(config_path) > 0)
+ {
+ /* if full path was given, try loading exactly this file */
+ if (strchr(config_path, OSAL_DIR_SEPARATOR) != NULL)
+ {
+ PluginLoadTry(config_path, i);
+ }
+ else if (strcmp(config_path, "dummy") == 0)
+ {
+ use_dummy = 1;
+ }
+ else /* otherwise search through the plugin directory to find a match with this name */
+ {
+ osal_lib_search *curr = lib_filelist;
+ while (curr != NULL && g_PluginMap[i].handle == NULL)
+ {
+ if (strncmp(curr->filename, config_path, strlen(config_path)) == 0)
+ PluginLoadTry(curr->filepath, i);
+ curr = curr->next;
+ }
+ }
+ }
+ }
+ /* As a last resort, search for any appropriate plugin in search directory */
+ if (!use_dummy && g_PluginMap[i].handle == NULL)
+ {
+ osal_lib_search *curr = lib_filelist;
+ while (curr != NULL && g_PluginMap[i].handle == NULL)
+ {
+ PluginLoadTry(curr->filepath, i);
+ curr = curr->next;
+ }
+ }
+ /* print out the particular plugin used */
+ if (g_PluginMap[i].handle == NULL)
+ {
+ DebugMessage(M64MSG_INFO, "using %s plugin: <dummy>", g_PluginMap[i].name);
+ }
+ else
+ {
+ DebugMessage(M64MSG_INFO, "using %s plugin: '%s' v%i.%i.%i", g_PluginMap[i].name,
+ g_PluginMap[i].libname, VERSION_PRINTF_SPLIT(g_PluginMap[i].libversion));
+ DebugMessage(M64MSG_VERBOSE, "%s plugin library: %s", g_PluginMap[i].name, g_PluginMap[i].filename);
+ }
+ }
+
+ /* free up the list of library files in the plugin search directory */
+ osal_free_lib_list(lib_filelist);
+ return M64ERR_SUCCESS;
+}
+
+m64p_error PluginUnload(void)
+{
+ typedef m64p_error (*ptr_PluginShutdown)(void);
+ ptr_PluginShutdown PluginShutdown;
+ int i;
+
+ /* shutdown each type of plugin */
+ for (i = 0; i < 4; i++)
+ {
+ if (g_PluginMap[i].handle == NULL)
+ continue;
+ /* call the destructor function for the plugin and release the library */
+ PluginShutdown = (ptr_PluginShutdown) osal_dynlib_getproc(g_PluginMap[i].handle, "PluginShutdown");
+ if (PluginShutdown != NULL)
+ (*PluginShutdown)();
+ osal_dynlib_close(g_PluginMap[i].handle);
+ /* clear out the plugin map's members */
+ g_PluginMap[i].handle = NULL;
+ g_PluginMap[i].filename[0] = 0;
+ g_PluginMap[i].libname = NULL;
+ g_PluginMap[i].libversion = 0;
+ }
+
+ return M64ERR_SUCCESS;
+}
+
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