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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SERVERS_ROTATEANDCROPMAPPER_H
#define ANDROID_SERVERS_ROTATEANDCROPMAPPER_H
#include <utils/Errors.h>
#include <array>
#include <mutex>
#include "camera/CameraMetadata.h"
#include "device3/CoordinateMapper.h"
namespace android {
namespace camera3 {
/**
* Utilities to transform between unrotated and rotated-and-cropped coordinate systems
* for cameras that support SCALER_ROTATE_AND_CROP controls in AUTO mode.
*/
class RotateAndCropMapper : public CoordinateMapper {
public:
static bool isNeeded(const CameraMetadata* deviceInfo);
RotateAndCropMapper(const CameraMetadata* deviceInfo);
void initRemappedKeys() override;
/**
* Adjust capture request assuming rotate and crop AUTO is enabled
*/
status_t updateCaptureRequest(CameraMetadata *request);
/**
* Adjust capture result assuming rotate and crop AUTO is enabled
*/
status_t updateCaptureResult(CameraMetadata *result);
private:
// Transform count's worth of x,y points passed in with 2x2 matrix + translate with transform
// origin (cx,cy)
void transformPoints(int32_t* pts, size_t count, float transformMat[4],
float xShift, float yShift, float cx, float cy);
// Take two corners of a rect as (x1,y1,x2,y2) and swap x and y components
// if needed so that x1 < x2, y1 < y2.
void swapRectToMinFirst(int32_t* rect);
int32_t mArrayWidth, mArrayHeight;
float mArrayAspect, mRotateAspect;
}; // class RotateAndCroMapper
} // namespace camera3
} // namespace android
#endif