1 /* 2 * Copyright (C) 2011 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 /* 18 * Contains implementation of a class NV21JpegCompressor that encapsulates a 19 * converter between NV21, and JPEG formats. 20 */ 21 22 #define LOG_NDEBUG 0 23 #define LOG_TAG "EmulatedCamera_JPEG" 24 #include <cutils/log.h> 25 #include "JpegCompressor.h" 26 27 namespace android { 28 29 NV21JpegCompressor::NV21JpegCompressor() 30 : Yuv420SpToJpegEncoder(mStrides) 31 { 32 } 33 34 NV21JpegCompressor::~NV21JpegCompressor() 35 { 36 } 37 38 /**************************************************************************** 39 * Public API 40 ***************************************************************************/ 41 42 status_t NV21JpegCompressor::compressRawImage(const void* image, 43 int width, 44 int height, 45 int quality) 46 { 47 ALOGV("%s: %p[%dx%d]", __FUNCTION__, image, width, height); 48 void* pY = const_cast<void*>(image); 49 int offsets[2]; 50 offsets[0] = 0; 51 offsets[1] = width * height; 52 mStrides[0] = width; 53 mStrides[1] = width; 54 if (encode(&mStream, pY, width, height, offsets, quality)) { 55 ALOGV("%s: Compressed JPEG: %d[%dx%d] -> %d bytes", 56 __FUNCTION__, (width * height * 12) / 8, width, height, mStream.getOffset()); 57 return NO_ERROR; 58 } else { 59 ALOGE("%s: JPEG compression failed", __FUNCTION__); 60 return errno ? errno : EINVAL; 61 } 62 } 63 64 }; /* namespace android */ 65
