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 "box/item_property_transform_box.h"
17 
18 static const uint8_t ROTATE_NINETY_DEGREES = 90;
19 
20 namespace OHOS {
21 namespace ImagePlugin {
ParseContent(HeifStreamReader & reader)22 heif_error HeifIrotBox::ParseContent(HeifStreamReader &reader)
23 {
24     uint8_t rotation = reader.Read8() & 0x03; // only 2 bits is used
25     rotDegree_ = rotation * ROTATE_NINETY_DEGREES;
26     return reader.GetError();
27 }
28 
Write(HeifStreamWriter & writer) const29 heif_error HeifIrotBox::Write(HeifStreamWriter &writer) const
30 {
31     size_t boxStart = ReserveHeader(writer);
32     writer.Write8((uint8_t) (rotDegree_ / ROTATE_NINETY_DEGREES));
33     WriteCalculatedHeader(writer, boxStart);
34     return heif_error_ok;
35 }
36 
ParseContent(HeifStreamReader & reader)37 heif_error HeifImirBox::ParseContent(HeifStreamReader &reader)
38 {
39     uint8_t axis = reader.Read8();
40     direction_ = (axis & 0x01) ? HeifTransformMirrorDirection::HORIZONTAL : HeifTransformMirrorDirection::VERTICAL;
41     return reader.GetError();
42 }
43 
Write(HeifStreamWriter & writer) const44 heif_error HeifImirBox::Write(HeifStreamWriter &writer) const
45 {
46     if (direction_ == HeifTransformMirrorDirection::INVALID) {
47         return heif_invalid_mirror_direction;
48     }
49     size_t boxStart = ReserveHeader(writer);
50     writer.Write8(static_cast<uint8_t>(direction_));
51     WriteCalculatedHeader(writer, boxStart);
52     return heif_error_ok;
53 }
54 } // namespace ImagePlugin
55 } // namespace OHOS
56