1 /*
2  * Copyright (C) 2014 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 #ifndef ANDROID_CAMERA_CLIENT_CAMERAUTILS_H
18 #define ANDROID_CAMERA_CLIENT_CAMERAUTILS_H
19 
20 #include <binder/IMemory.h>
21 #include <camera/CameraMetadata.h>
22 #include <utils/Errors.h>
23 #include <utils/RefBase.h>
24 
25 #include <stdint.h>
26 
27 namespace android {
28 
29 /**
30  * CameraUtils contains utility methods that are shared between the native
31  * camera client, and the camera service.
32  */
33 class CameraUtils {
34     public:
35         /**
36          * Calculate the ANativeWindow transform from the static camera
37          * metadata.  This is based on the sensor orientation and lens facing
38          * attributes of the camera device.
39          *
40          * Returns OK on success, or a negative error code.
41          */
42         static status_t getRotationTransform(const CameraMetadata& staticInfo,
43                 /*out*/int32_t* transform);
44 
45         /**
46          * Check if the image data is VideoNativeHandleMetadata, that contains a native handle.
47          */
48         static bool isNativeHandleMetadata(const sp<IMemory>& imageData);
49 
50     private:
51         CameraUtils();
52 };
53 
54 } /* namespace android */
55 
56 #endif /* ANDROID_CAMERA_CLIENT_CAMERAUTILS_H */
57 
58