1 /* 2 * Copyright (C) 2020 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_SERVERS_ROTATEANDCROPMAPPER_H 18 #define ANDROID_SERVERS_ROTATEANDCROPMAPPER_H 19 20 #include <utils/Errors.h> 21 #include <array> 22 #include <mutex> 23 24 #include "camera/CameraMetadata.h" 25 #include "device3/CoordinateMapper.h" 26 27 namespace android { 28 29 namespace camera3 { 30 31 /** 32 * Utilities to transform between unrotated and rotated-and-cropped coordinate systems 33 * for cameras that support SCALER_ROTATE_AND_CROP controls in AUTO mode. 34 */ 35 class RotateAndCropMapper : public CoordinateMapper { 36 public: 37 static bool isNeeded(const CameraMetadata* deviceInfo); 38 39 RotateAndCropMapper(const CameraMetadata* deviceInfo); 40 41 void initRemappedKeys() override; 42 43 /** 44 * Adjust capture request assuming rotate and crop AUTO is enabled 45 */ 46 status_t updateCaptureRequest(CameraMetadata *request); 47 48 /** 49 * Adjust capture result assuming rotate and crop AUTO is enabled 50 */ 51 status_t updateCaptureResult(CameraMetadata *result); 52 53 private: 54 // Transform count's worth of x,y points passed in with 2x2 matrix + translate with transform 55 // origin (cx,cy) 56 void transformPoints(int32_t* pts, size_t count, float transformMat[4], 57 float xShift, float yShift, float cx, float cy); 58 // Take two corners of a rect as (x1,y1,x2,y2) and swap x and y components 59 // if needed so that x1 < x2, y1 < y2. 60 void swapRectToMinFirst(int32_t* rect); 61 62 int32_t mArrayWidth, mArrayHeight; 63 float mArrayAspect, mRotateAspect; 64 }; // class RotateAndCroMapper 65 66 } // namespace camera3 67 68 } // namespace android 69 70 #endif 71