1 files changed, 74 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/pipeline/Buffer.java b/src/com/android/gallery3d/filtershow/pipeline/Buffer.java
new file mode 100644
index 000000000..744451229
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/pipeline/Buffer.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2013 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.gallery3d.filtershow.pipeline;
+
+import android.graphics.Bitmap;
+import android.support.v8.renderscript.Allocation;
+import android.support.v8.renderscript.RenderScript;
+
+public class Buffer {
+    private static final String LOGTAG = "Buffer";
+    private Bitmap mBitmap;
+    private Allocation mAllocation;
+    private boolean mUseAllocation = false;
+    private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
+    private ImagePreset mPreset;
+
+    public Buffer(Bitmap bitmap) {
+        RenderScript rs = CachingPipeline.getRenderScriptContext();
+        if (bitmap != null) {
+            mBitmap = bitmap.copy(BITMAP_CONFIG, true);
+        }
+        if (mUseAllocation) {
+            // TODO: recreate the allocation when the RS context changes
+            mAllocation = Allocation.createFromBitmap(rs, mBitmap,
+                    Allocation.MipmapControl.MIPMAP_NONE,
+                    Allocation.USAGE_SHARED | Allocation.USAGE_SCRIPT);
+        }
+    }
+
+    public void setBitmap(Bitmap bitmap) {
+        mBitmap = bitmap.copy(BITMAP_CONFIG, true);
+    }
+
+    public Bitmap getBitmap() {
+        return mBitmap;
+    }
+
+    public Allocation getAllocation() {
+        return mAllocation;
+    }
+
+    public void sync() {
+        if (mUseAllocation) {
+            mAllocation.copyTo(mBitmap);
+        }
+    }
+
+    public ImagePreset getPreset() {
+        return mPreset;
+    }
+
+    public void setPreset(ImagePreset preset) {
+        if ((mPreset == null) || (!mPreset.same(preset))) {
+            mPreset = new ImagePreset(preset);
+        } else {
+            mPreset.updateWith(preset);
+        }
+    }
+}
+