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 "ZeroFilter" 19 20 #include <media/MediaCodecBuffer.h> 21 #include <media/stagefright/foundation/ADebug.h> 22 #include <media/stagefright/foundation/AMessage.h> 23 24 #include "ZeroFilter.h" 25 26 namespace android { 27 28 status_t ZeroFilter::setParameters(const sp<AMessage> &msg) { 29 sp<AMessage> params; 30 CHECK(msg->findMessage("params", ¶ms)); 31 32 int32_t invert; 33 if (params->findInt32("invert", &invert)) { 34 mInvertData = (invert != 0); 35 } 36 37 return OK; 38 } 39 40 status_t ZeroFilter::processBuffers( 41 const sp<MediaCodecBuffer> &srcBuffer, const sp<MediaCodecBuffer> &outBuffer) { 42 // assuming identical input & output buffers, since we're a copy filter 43 if (mInvertData) { 44 uint32_t* src = (uint32_t*)srcBuffer->data(); 45 uint32_t* dest = (uint32_t*)outBuffer->data(); 46 for (size_t i = 0; i < srcBuffer->size() / 4; ++i) { 47 *(dest++) = *(src++) ^ 0xFFFFFFFF; 48 } 49 } else { 50 memcpy(outBuffer->data(), srcBuffer->data(), srcBuffer->size()); 51 } 52 outBuffer->setRange(0, srcBuffer->size()); 53 54 return OK; 55 } 56 57 } // namespace android 58
