1 files changed, 99 insertions, 0 deletions
diff --git a/src/com/android/camera/VideoPreview.java b/src/com/android/camera/VideoPreview.java
new file mode 100644
index 0000000..aed1e89
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+++ b/src/com/android/camera/VideoPreview.java
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+/*
+ * 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.content.Context;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.SurfaceView;
+import android.view.View.MeasureSpec;
+
+class VideoPreview extends SurfaceView {
+    private float mAspectRatio;
+    private int mHorizontalTileSize = 1;
+    private int mVerticalTileSize = 1;
+
+    /**
+     * Setting the aspect ratio to this value means to not enforce an aspect ratio.
+     */
+    public static float DONT_CARE = 0.0f;
+
+    public VideoPreview(Context context) {
+        super(context);
+    }
+
+    public VideoPreview(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public VideoPreview(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public void setTileSize(int horizontalTileSize, int verticalTileSize) {
+        if ((mHorizontalTileSize != horizontalTileSize)
+                || (mVerticalTileSize != verticalTileSize)) {
+            mHorizontalTileSize = horizontalTileSize;
+            mVerticalTileSize = verticalTileSize;
+            requestLayout();
+            invalidate();
+        }
+    }
+
+    public void setAspectRatio(int width, int height) {
+        setAspectRatio(((float) width) / ((float) height));
+    }
+
+    public void setAspectRatio(float aspectRatio) {
+        if (mAspectRatio != aspectRatio) {
+            mAspectRatio = aspectRatio;
+            requestLayout();
+            invalidate();
+        }
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        if (mAspectRatio != DONT_CARE) {
+            int widthSpecSize =  MeasureSpec.getSize(widthMeasureSpec);
+            int heightSpecSize =  MeasureSpec.getSize(heightMeasureSpec);
+
+            int width = widthSpecSize;
+            int height = heightSpecSize;
+
+            if (width > 0 && height > 0) {
+                float defaultRatio = ((float) width) / ((float) height);
+                if (defaultRatio < mAspectRatio) {
+                    // Need to reduce height
+                    height = (int) (width / mAspectRatio);
+                } else if (defaultRatio > mAspectRatio) {
+                    width = (int) (height * mAspectRatio);
+                }
+                width = roundUpToTile(width, mHorizontalTileSize, widthSpecSize);
+                height = roundUpToTile(height, mVerticalTileSize, heightSpecSize);
+                Log.i("VideoPreview", "ar " + mAspectRatio + " setting size: " + width + 'x' + height);
+                setMeasuredDimension(width, height);
+                return;
+            }
+        }
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+
+    private int roundUpToTile(int dimension, int tileSize, int maxDimension) {
+        return Math.min(((dimension + tileSize - 1) / tileSize) * tileSize, maxDimension);
+    }
+}