1 files changed, 95 insertions, 0 deletions
diff --git a/src/com/android/camera/CameraThread.java b/src/com/android/camera/CameraThread.java
new file mode 100644
index 0000000..ba888bf
--- /dev/null
+++ b/src/com/android/camera/CameraThread.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.camera;
+
+import android.os.Process;
+
+public class CameraThread {
+    private Thread mThread;
+    private int mTid;
+    private boolean mTidSet;
+    private boolean mFinished;
+
+    synchronized private void setTid(int tid) {
+        mTid = tid;
+        mTidSet = true;
+        CameraThread.this.notifyAll();
+    }
+    
+    synchronized private void setFinished() {
+        mFinished = true;
+    }
+    
+    public CameraThread(final Runnable r) {
+        Runnable wrapper = new Runnable() {
+            public void run() {
+                setTid(Process.myTid());
+                try {
+                    r.run();
+                } finally {
+                    setFinished();
+                }
+            }
+        };
+
+        mThread = new Thread(wrapper);
+    }
+    
+    synchronized public void start() {
+        mThread.start();
+    }
+    
+    synchronized public void setName(String name) {
+        mThread.setName(name);
+    }
+    
+    public void join() {
+        try {
+            mThread.join();
+        } catch (InterruptedException ex) {
+            // ok?
+        }
+    }
+    
+    public long getId() {
+        return mThread.getId();
+    }
+    
+    public Thread realThread() {
+        return mThread;
+    }
+    
+    synchronized public void setPriority(int androidOsPriority) {
+        while (!mTidSet) {
+            try {
+                CameraThread.this.wait();
+            } catch (InterruptedException ex) {
+                // ok, try again
+            }
+        }
+        if (!mFinished)
+            Process.setThreadPriority(mTid, androidOsPriority);
+    }
+    
+    synchronized public void toBackground() {
+        setPriority(Process.THREAD_PRIORITY_BACKGROUND);
+    }
+    
+    synchronized public void toForeground() {
+        setPriority(Process.THREAD_PRIORITY_FOREGROUND);
+    }
+}