[voskstt] Fix load on linux arm (openhab#13556)

Signed-off-by: Miguel Álvarez <miguelwork92@gmail.com>

bundles/org.openhab.voice.voskstt/README.md

@@ -17,6 +17,8 @@ The following platforms are supported:
 * osx
 * win64
 
+**On Linux this binary requires the package libatomic to be installed (apt install libatomic1).**
+
 ## Configuring the model
 
 Before you can use this service you should configure your language model.

bundles/org.openhab.voice.voskstt/src/main/java/org/openhab/voice/voskstt/internal/VoskSTTService.java

@@ -56,6 +56,7 @@
 import org.vosk.Recognizer;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.sun.jna.NativeLibrary;
 
 /**
  * The {@link VoskSTTService} class is a service implementation to use Vosk-API for Speech-to-Text.
@@ -77,11 +78,6 @@ public class VoskSTTService implements STTService {
                 logger.info("vosk dir created {}", VOSK_FOLDER);
             }
         }
-        try {
-            LibVosk.setLogLevel(LogLevel.WARNINGS);
-        } catch (UnsatisfiedLinkError e) {
-            logger.warn("UnsatisfiedLinkError: {}", e.getMessage());
-        }
     }
     private final Logger logger = LoggerFactory.getLogger(VoskSTTService.class);
     private final ScheduledExecutorService executor = ThreadPoolManager.getScheduledPool("OH-voice-voskstt");
@@ -96,7 +92,18 @@ public VoskSTTService(@Reference LocaleService localeService) {
 
     @Activate
     protected void activate(Map<String, Object> config) {
-        configChange(config);
+        try {
+            String osName = System.getProperty("os.name", "generic").toLowerCase();
+            String osArch = System.getProperty("os.arch", "").toLowerCase();
+            if (osName.contains("linux") && (osArch.equals("arm") || osArch.equals("armv7l"))) {
+                // workaround for loading required shared libraries
+                loadSharedLibrariesArmv7l();
+            }
+            LibVosk.setLogLevel(LogLevel.WARNINGS);
+            configChange(config);
+        } catch (LinkageError e) {
+            logger.warn("LinkageError, service will not work: {}", e.getMessage());
+        }
     }
 
     @Modified
@@ -305,4 +312,22 @@ private void trySleep(long ms) {
     private boolean isExpiredInterval(long interval, long referenceTime) {
         return System.currentTimeMillis() - referenceTime > interval;
     }
+
+    private void loadSharedLibrariesArmv7l() {
+        logger.debug("loading required shared libraries for linux arm");
+        var libatomicArmLibPath = Path.of("/usr/lib/arm-linux-gnueabihf/libatomic.so.1");
+        if (libatomicArmLibPath.toFile().exists()) {
+            var libatomicArmLibFolderPath = libatomicArmLibPath.getParent().toAbsolutePath();
+            String libraryPath = System.getProperty("jna.library.path", System.getProperty("java.library.path"));
+            if (!libraryPath.contains(libatomicArmLibFolderPath.toString())) {
+                libraryPath = libatomicArmLibFolderPath + "/:" + libraryPath;
+                System.setProperty("jna.library.path", libraryPath);
+                logger.debug("jna library path updated: {}", libraryPath);
+            }
+            NativeLibrary.getInstance("libatomic");
+            logger.debug("loaded libatomic shared library");
+        } else {
+            throw new LinkageError("Required shared library libatomic is missing");
+        }
+    }
 }