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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 //#define LOG_NDEBUG 0
     18 #define LOG_TAG "IntrinsicBlurFilter"
     19 
     20 #include <utils/Log.h>
     21 
     22 #include <media/MediaCodecBuffer.h>
     23 #include <media/stagefright/foundation/ADebug.h>
     24 #include <media/stagefright/foundation/AMessage.h>
     25 
     26 #include "IntrinsicBlurFilter.h"
     27 
     28 namespace android {
     29 
     30 status_t IntrinsicBlurFilter::configure(const sp<AMessage> &msg) {
     31     status_t err = SimpleFilter::configure(msg);
     32     if (err != OK) {
     33         return err;
     34     }
     35 
     36     if (!msg->findString("cacheDir", &mCacheDir)) {
     37         ALOGE("Failed to find cache directory in config message.");
     38         return NAME_NOT_FOUND;
     39     }
     40 
     41     return OK;
     42 }
     43 
     44 status_t IntrinsicBlurFilter::start() {
     45     // TODO: use a single RS context object for entire application
     46     mRS = new RSC::RS();
     47 
     48     if (!mRS->init(mCacheDir.c_str())) {
     49         ALOGE("Failed to initialize RenderScript context.");
     50         return NO_INIT;
     51     }
     52 
     53     // 32-bit elements for ARGB8888
     54     RSC::sp<const RSC::Element> e = RSC::Element::U8_4(mRS);
     55 
     56     RSC::Type::Builder tb(mRS, e);
     57     tb.setX(mWidth);
     58     tb.setY(mHeight);
     59     RSC::sp<const RSC::Type> t = tb.create();
     60 
     61     mAllocIn = RSC::Allocation::createTyped(mRS, t);
     62     mAllocOut = RSC::Allocation::createTyped(mRS, t);
     63 
     64     mBlur = RSC::ScriptIntrinsicBlur::create(mRS, e);
     65     mBlur->setRadius(mBlurRadius);
     66     mBlur->setInput(mAllocIn);
     67 
     68     return OK;
     69 }
     70 
     71 void IntrinsicBlurFilter::reset() {
     72     mBlur.clear();
     73     mAllocOut.clear();
     74     mAllocIn.clear();
     75     mRS.clear();
     76 }
     77 
     78 status_t IntrinsicBlurFilter::setParameters(const sp<AMessage> &msg) {
     79     sp<AMessage> params;
     80     CHECK(msg->findMessage("params", &params));
     81 
     82     float blurRadius;
     83     if (params->findFloat("blur-radius", &blurRadius)) {
     84         mBlurRadius = blurRadius;
     85     }
     86 
     87     return OK;
     88 }
     89 
     90 status_t IntrinsicBlurFilter::processBuffers(
     91         const sp<MediaCodecBuffer> &srcBuffer, const sp<MediaCodecBuffer> &outBuffer) {
     92     mAllocIn->copy1DRangeFrom(0, mWidth * mHeight, srcBuffer->data());
     93     mBlur->forEach(mAllocOut);
     94     mAllocOut->copy1DRangeTo(0, mWidth * mHeight, outBuffer->data());
     95 
     96     return OK;
     97 }
     98 
     99 }   // namespace android
    100