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
27extern "C" void JpegStub_init(JpegStub* stub) {
28    stub->mCompressor = static_cast<void*>(new Compressor());
29}
30
31extern "C" void JpegStub_cleanup(JpegStub* stub) {
32    delete reinterpret_cast<Compressor*>(stub->mCompressor);
33    stub->mCompressor = nullptr;
34}
35
36extern "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
56extern "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
63extern "C" size_t JpegStub_getCompressedSize(JpegStub* stub) {
64    Compressor* compressor = reinterpret_cast<Compressor*>(stub->mCompressor);
65
66    return compressor->getCompressedData().size();
67}
68