1 files changed, 99 insertions, 0 deletions
diff --git a/media/libstagefright/filters/IntrinsicBlurFilter.cpp b/media/libstagefright/filters/IntrinsicBlurFilter.cpp
new file mode 100644
index 0000000..cbcf699
--- /dev/null
+++ b/media/libstagefright/filters/IntrinsicBlurFilter.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "IntrinsicBlurFilter"
+
+#include <utils/Log.h>
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "IntrinsicBlurFilter.h"
+
+namespace android {
+
+status_t IntrinsicBlurFilter::configure(const sp<AMessage> &msg) {
+    status_t err = SimpleFilter::configure(msg);
+    if (err != OK) {
+        return err;
+    }
+
+    if (!msg->findString("cacheDir", &mCacheDir)) {
+        ALOGE("Failed to find cache directory in config message.");
+        return NAME_NOT_FOUND;
+    }
+
+    return OK;
+}
+
+status_t IntrinsicBlurFilter::start() {
+    // TODO: use a single RS context object for entire application
+    mRS = new RSC::RS();
+
+    if (!mRS->init(mCacheDir.c_str())) {
+        ALOGE("Failed to initialize RenderScript context.");
+        return NO_INIT;
+    }
+
+    // 32-bit elements for ARGB8888
+    RSC::sp<const RSC::Element> e = RSC::Element::U8_4(mRS);
+
+    RSC::Type::Builder tb(mRS, e);
+    tb.setX(mWidth);
+    tb.setY(mHeight);
+    RSC::sp<const RSC::Type> t = tb.create();
+
+    mAllocIn = RSC::Allocation::createTyped(mRS, t);
+    mAllocOut = RSC::Allocation::createTyped(mRS, t);
+
+    mBlur = RSC::ScriptIntrinsicBlur::create(mRS, e);
+    mBlur->setRadius(mBlurRadius);
+    mBlur->setInput(mAllocIn);
+
+    return OK;
+}
+
+void IntrinsicBlurFilter::reset() {
+    mBlur.clear();
+    mAllocOut.clear();
+    mAllocIn.clear();
+    mRS.clear();
+}
+
+status_t IntrinsicBlurFilter::setParameters(const sp<AMessage> &msg) {
+    sp<AMessage> params;
+    CHECK(msg->findMessage("params", &params));
+
+    float blurRadius;
+    if (params->findFloat("blur-radius", &blurRadius)) {
+        mBlurRadius = blurRadius;
+    }
+
+    return OK;
+}
+
+status_t IntrinsicBlurFilter::processBuffers(
+        const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) {
+    mAllocIn->copy1DRangeFrom(0, mWidth * mHeight, srcBuffer->data());
+    mBlur->forEach(mAllocOut);
+    mAllocOut->copy1DRangeTo(0, mWidth * mHeight, outBuffer->data());
+
+    return OK;
+}
+
+}   // namespace android