1 /* 2 * Copyright (C) 2013 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 #include "JpegStub.h" 18 19 #define LOG_NDEBUG 0 20 #define LOG_TAG "EmulatedCamera_JPEGStub" 21 #include <errno.h> 22 #include <cutils/log.h> 23 #include <stdlib.h> 24 25 #include "Compressor.h" 26 27 extern "C" void JpegStub_init(JpegStub* stub) { 28 stub->mCompressor = static_cast<void*>(new Compressor()); 29 } 30 31 extern "C" void JpegStub_cleanup(JpegStub* stub) { 32 delete reinterpret_cast<Compressor*>(stub->mCompressor); 33 stub->mCompressor = nullptr; 34 } 35 36 extern "C" int JpegStub_compress(JpegStub* stub, 37 const void* buffer, 38 int width, 39 int height, 40 int quality, 41 ExifData* exifData) 42 { 43 Compressor* compressor = reinterpret_cast<Compressor*>(stub->mCompressor); 44 45 if (compressor->compress(reinterpret_cast<const unsigned char*>(buffer), 46 width, height, quality, exifData)) { 47 ALOGV("%s: Compressed JPEG: %d[%dx%d] -> %zu bytes", 48 __FUNCTION__, (width * height * 12) / 8, 49 width, height, compressor->getCompressedData().size()); 50 return 0; 51 } 52 ALOGE("%s: JPEG compression failed", __FUNCTION__); 53 return errno ? errno : EINVAL; 54 } 55 56 extern "C" void JpegStub_getCompressedImage(JpegStub* stub, void* buff) { 57 Compressor* compressor = reinterpret_cast<Compressor*>(stub->mCompressor); 58 59 const std::vector<unsigned char>& data = compressor->getCompressedData(); 60 memcpy(buff, &data[0], data.size()); 61 } 62 63 extern "C" size_t JpegStub_getCompressedSize(JpegStub* stub) { 64 Compressor* compressor = reinterpret_cast<Compressor*>(stub->mCompressor); 65 66 return compressor->getCompressedData().size(); 67 } 68
