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 <log/log.h>
23 #include <stdlib.h>
24
25 #include "Compressor.h"
26
JpegStub_init(JpegStub * stub)27 extern "C" void JpegStub_init(JpegStub* stub) {
28 stub->mCompressor = static_cast<void*>(new Compressor());
29 }
30
JpegStub_cleanup(JpegStub * stub)31 extern "C" void JpegStub_cleanup(JpegStub* stub) {
32 delete reinterpret_cast<Compressor*>(stub->mCompressor);
33 stub->mCompressor = nullptr;
34 }
35
JpegStub_compress(JpegStub * stub,const void * buffer,int width,int height,int quality,ExifData * exifData)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
JpegStub_getCompressedImage(JpegStub * stub,void * buff)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
JpegStub_getCompressedSize(JpegStub * stub)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