1 /*
2 * Copyright (C) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "exif_utils.h"
17
18 #include "image_source.h"
19 #include "media_exif.h"
20 #include "media_log.h"
21 #include "medialibrary_errno.h"
22 #include "medialibrary_tracer.h"
23
24 using namespace std;
25
26 namespace OHOS {
27 namespace Media {
28
29 const double TIMER_MULTIPLIER = 60.0;
30
WriteGpsExifInfo(const string & path,double longitude,double latitude)31 int32_t ExifUtils::WriteGpsExifInfo(const string &path, double longitude, double latitude)
32 {
33 MediaLibraryTracer tracer;
34 tracer.Start("WriteGpsExifInfo");
35 uint32_t errorCode = 0;
36 SourceOptions opts;
37 std::unique_ptr<ImageSource> imageSource = ImageSource::CreateImageSource(path, opts, errorCode);
38 if (imageSource == nullptr) {
39 MEDIA_ERR_LOG("imageSource is nullptr");
40 return E_ERR;
41 }
42
43 uint32_t index = 0;
44 uint32_t ret = imageSource->ModifyImageProperty(index, PHOTO_DATA_IMAGE_GPS_LONGITUDE,
45 LocationValueToString(longitude), path);
46 if (ret != E_OK) {
47 MEDIA_ERR_LOG("modify image property longitude fail %{public}d", ret);
48 }
49
50 ret = imageSource->ModifyImageProperty(index, PHOTO_DATA_IMAGE_GPS_LONGITUDE_REF,
51 longitude > 0.0 ? "E" : "W", path);
52 if (ret != E_OK) {
53 MEDIA_ERR_LOG("modify image property longitude ref fail %{public}d", ret);
54 }
55
56 ret = imageSource->ModifyImageProperty(index, PHOTO_DATA_IMAGE_GPS_LATITUDE, LocationValueToString(latitude), path);
57 if (ret != E_OK) {
58 MEDIA_ERR_LOG("modify image property latitude fail %{public}d", ret);
59 }
60
61 ret = imageSource->ModifyImageProperty(index, PHOTO_DATA_IMAGE_GPS_LATITUDE_REF, latitude > 0.0 ? "N" : "S", path);
62 if (ret != E_OK) {
63 MEDIA_ERR_LOG("modify image property latitude ref fail %{public}d", ret);
64 }
65
66 return E_OK;
67 }
68
LocationValueToString(double value)69 string ExifUtils::LocationValueToString(double value)
70 {
71 string result = "";
72 double positiveValue = value;
73 if (value < 0.0) {
74 positiveValue = 0.0 - value;
75 }
76
77 int degrees = static_cast<int32_t>(positiveValue);
78 result = result + to_string(degrees) + ", ";
79 positiveValue -= (double)degrees;
80 positiveValue *= TIMER_MULTIPLIER;
81 int minutes = (int)positiveValue;
82 result = result + to_string(minutes) + ", ";
83 positiveValue -= (double)minutes;
84 positiveValue *= TIMER_MULTIPLIER;
85 result = result + to_string(positiveValue);
86 return result;
87 }
88 } // namespace Media
89 } // namespace OHOS