Add JpegFile manual reloading

Author: dwillmc

jpegkit/src/main/java/com/jpegkit/Jpeg.java

@@ -17,6 +17,10 @@ private Jpeg() {
     }
 
     public Jpeg(@NonNull byte[] jpegBytes) {
+        mount(jpegBytes);
+    }
+
+    protected void mount(byte[] jpegBytes) {
         synchronized (sJniLock) {
             mHandle = jniMount(jpegBytes);
         }

jpegkit/src/main/java/com/jpegkit/JpegFile.java

@@ -13,7 +13,7 @@ public class JpegFile extends Jpeg {
 
     private File mJpegFile;
 
-    public JpegFile(@NonNull File jpegFile) throws IOException {
+    public JpegFile(@NonNull final File jpegFile) throws IOException {
         super(dumpFile(jpegFile));
         mJpegFile = jpegFile;
     }
@@ -28,6 +28,12 @@ public void save() throws IOException {
         outputStream.close();
     }
 
+    public void reload() throws Exception {
+        byte[] jpegBytes = dumpFile(mJpegFile);
+        release();
+        mount(jpegBytes);
+    }
+
     private static byte[] dumpFile(File file) throws IOException {
         FileInputStream inputStream = new FileInputStream(file);
         byte[] fileBytes = new byte[inputStream.available()];