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Diffstat (limited to 'dssi/src/jload.c')
| -rw-r--r-- | dssi/src/jload.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/dssi/src/jload.c b/dssi/src/jload.c deleted file mode 100644 index 1672b91..0000000 --- a/dssi/src/jload.c +++ /dev/null @@ -1,214 +0,0 @@ -/* load.c - - Free software by Richard W.E. Furse. Do with as you will. No - warranty. */ - -/* patched by Jarno Seppänen, jams@cs.tut.fi, for plugin~ */ - -/* patched by Jamie Bullock, jamie@postlude.co.uk, for dssi~ */ - -/*****************************************************************************/ - -#include <dlfcn.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -/*****************************************************************************/ - -#include "ladspa.h" -#include "jutils.h" - -/*****************************************************************************/ - -/* This function provides a wrapping of dlopen(). When the filename is - not an absolute path (i.e. does not begin with / character), this - routine will search the LADSPA_PATH for the file. */ -static void * -dlopenLADSPA(const char * pcFilename, int iFlag) { - - char * pcBuffer; - const char * pcEnd; - const char * pcLADSPAPath; - const char * pcStart; - int iEndsInSO; - int iNeedSlash; - size_t iFilenameLength; - void * pvResult; - char *pluginPath; - - - iFilenameLength = strlen(pcFilename); - pvResult = NULL; - - /* First we just try calling dlopen(). This works if the user knows - about dlopen() and has placed the file on the LD_LIBRARY path or - has used an absolute directory. */ - pvResult = dlopen(pcFilename, iFlag); - if (pvResult != NULL) - return pvResult; - - /* If the filename is not absolute then we wish to check along the - LADSPA_PATH path to see if we can find the file there. */ - if (pcFilename[0] != '/') { - - pcLADSPAPath = NULL; - - if(getenv("LADSPA_PATH") && getenv("DSSI_PATH")){ - pluginPath = malloc(sizeof(char) * - (strlen(getenv("LADSPA_PATH")) + 1) + - sizeof(char) * strlen(getenv("DSSI_PATH"))); - sprintf(pluginPath, "%s:%s", - getenv("LADSPA_PATH"), getenv("DSSI_PATH")); - pcLADSPAPath = pluginPath; - free(pluginPath); - } - if (pcLADSPAPath == NULL) { - fprintf(stderr, "Warning: no LADSPA_PATH and DSSI_PATH, assuming /usr/lib/ladspa:/usr/local/lib/ladspa:/usr/lib/dssi:/usr/local/lib/dssi\n"); - pcLADSPAPath = - "/usr/lib/ladspa:/usr/local/lib/ladspa:/usr/lib/dssi:/usr/local/lib/dssi"; - } - - if (pcLADSPAPath) { - - pcStart = pcLADSPAPath; - while (*pcStart != '\0') { - pcEnd = pcStart; - while (*pcEnd != ':' && *pcEnd != '\0') - pcEnd++; - - pcBuffer = malloc(iFilenameLength + 2 + (pcEnd - pcStart)); - if (pcEnd > pcStart) - strncpy(pcBuffer, pcStart, pcEnd - pcStart); - iNeedSlash = 0; - if (pcEnd > pcStart) - if (*(pcEnd - 1) != '/') { - iNeedSlash = 1; - pcBuffer[pcEnd - pcStart] = '/'; - } - strcpy(pcBuffer + iNeedSlash + (pcEnd - pcStart), pcFilename); - - pvResult = dlopen(pcBuffer, iFlag); - - free (pcBuffer); - if (pvResult != NULL){ - return pvResult; - } - - pcStart = pcEnd; - if (*pcStart == ':') - pcStart++; - } - } else { - fputs ("warning: You haven't specified the LADSPA_PATH environment variable and didn't specify an absolute path to the plug-in.\n" - "Please set the LADSPA_PATH variable to point to your LADSPA plug-in directories (eg. \"export LADSPA_PATH=/usr/local/lib/ladspa\").\n", stderr); - } - } - - /* As a last ditch effort, check if filename does not end with - ".so". In this case, add this suffix and recurse. */ - iEndsInSO = 0; - if (iFilenameLength > 3) - iEndsInSO = (strcmp(pcFilename + iFilenameLength - 3, ".so") == 0); - if (!iEndsInSO) { - pcBuffer = malloc(iFilenameLength + 4); - strcpy(pcBuffer, pcFilename); - strcat(pcBuffer, ".so"); - pvResult = dlopenLADSPA(pcBuffer, iFlag); - } - - if (pvResult != NULL) - return pvResult; - - /* If nothing has worked, then at least we can make sure we set the - correct error message - and this should correspond to a call to - dlopen() with the actual filename requested. The dlopen() manual - page does not specify whether the first or last error message - will be kept when multiple calls are made to dlopen(). We've - covered the former case - now we can handle the latter by calling - dlopen() again here. */ - return dlopen(pcFilename, iFlag); -} - -/*****************************************************************************/ - -void * -loadLADSPAPluginLibrary(const char * pcPluginFilename) { - - void * pvPluginHandle; - - pvPluginHandle = dlopenLADSPA(pcPluginFilename, RTLD_NOW); - if (!pvPluginHandle) { - fprintf(stderr, - "Failed to load plugin \"%s\": %s\n", - pcPluginFilename, - dlerror()); -#if 0 - exit(1); -#else - return NULL; -#endif - } - - return pvPluginHandle; -} - -/*****************************************************************************/ - -void -unloadLADSPAPluginLibrary(void * pvLADSPAPluginLibrary) { - dlclose(pvLADSPAPluginLibrary); -} - -/*****************************************************************************/ - -const LADSPA_Descriptor * -findLADSPAPluginDescriptor(void * pvLADSPAPluginLibrary, - const char * pcPluginLibraryFilename, - const char * pcPluginLabel) { - - const LADSPA_Descriptor * psDescriptor; - LADSPA_Descriptor_Function pfDescriptorFunction; - unsigned long lPluginIndex; - - dlerror(); - pfDescriptorFunction - = (LADSPA_Descriptor_Function)dlsym(pvLADSPAPluginLibrary, - "ladspa_descriptor"); - if (!pfDescriptorFunction) { - const char * pcError = dlerror(); - if (pcError) - fprintf(stderr, - "Unable to find ladspa_descriptor() function in plugin " - "library file \"%s\": %s.\n" - "Are you sure this is a LADSPA plugin file?\n", - pcPluginLibraryFilename, - pcError); -#if 0 - exit(1); -#else - return NULL; -#endif - } - - for (lPluginIndex = 0;; lPluginIndex++) { - psDescriptor = pfDescriptorFunction(lPluginIndex); - if (psDescriptor == NULL) { - fprintf(stderr, - "Unable to find label \"%s\" in plugin library file \"%s\".\n", - pcPluginLabel, - pcPluginLibraryFilename); -#if 0 - exit(1); -#else - return NULL; -#endif - } - if (strcmp(psDescriptor->Label, pcPluginLabel) == 0) - return psDescriptor; - } -} - -/*****************************************************************************/ - -/* EOF */ |