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103 lines
3.5 KiB
103 lines
3.5 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SERVERS_ZOOMRATIOMAPPER_H
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#define ANDROID_SERVERS_ZOOMRATIOMAPPER_H
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#include <utils/Errors.h>
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#include <array>
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#include "camera/CameraMetadata.h"
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#include "device3/CoordinateMapper.h"
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namespace android {
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namespace camera3 {
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/**
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* Utilities to convert between the new zoomRatio and existing cropRegion
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* metadata tags. Note that this class does conversions in 2 scenarios:
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* - HAL supports zoomRatio and the application uses cropRegion, or
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* - HAL doesn't support zoomRatio, but the application uses zoomRatio
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*/
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class ZoomRatioMapper : public CoordinateMapper {
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public:
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ZoomRatioMapper() = default;
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ZoomRatioMapper(const CameraMetadata *deviceInfo,
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bool supportNativeZoomRatio, bool usePrecorrectArray);
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ZoomRatioMapper(const ZoomRatioMapper& other) :
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mHalSupportsZoomRatio(other.mHalSupportsZoomRatio),
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mArrayWidth(other.mArrayWidth), mArrayHeight(other.mArrayHeight),
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mIsValid(other.mIsValid) { initRemappedKeys(); }
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void initRemappedKeys() override;
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/**
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* Initialize request template with valid zoomRatio if necessary.
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*/
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static status_t initZoomRatioInTemplate(CameraMetadata *request);
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/**
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* Override zoomRatio related tags in the static metadata.
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*/
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static status_t overrideZoomRatioTags(
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CameraMetadata* deviceInfo, bool* supportNativeZoomRatio);
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/**
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* Update capture request to handle both cropRegion and zoomRatio.
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*/
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status_t updateCaptureRequest(CameraMetadata *request);
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/**
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* Update capture result to handle both cropRegion and zoomRatio.
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*/
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status_t updateCaptureResult(CameraMetadata *request, bool requestedZoomRatioIs1);
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public: // Visible for testing. Do not use concurently.
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void scaleCoordinates(int32_t* coordPairs, int coordCount,
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float scaleRatio, bool clamp, int32_t arrayWidth, int32_t arrayHeight);
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bool isValid() { return mIsValid; }
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private:
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// const after construction
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bool mHalSupportsZoomRatio;
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// active array / pre-correction array dimension for default and maximum
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// resolution modes.
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int32_t mArrayWidth, mArrayHeight;
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int32_t mArrayWidthMaximumResolution, mArrayHeightMaximumResolution;
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bool mIsValid = false;
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status_t deriveZoomRatio(const CameraMetadata* metadata, float *zoomRatio, int arrayWidth,
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int arrayHeight);
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void scaleRects(int32_t* rects, int rectCount, float scaleRatio, int32_t arrayWidth,
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int32_t arrayHeight);
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status_t separateZoomFromCropLocked(CameraMetadata* metadata, bool isResult, int arrayWidth,
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int arrayHeight);
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status_t combineZoomAndCropLocked(CameraMetadata* metadata, bool isResult, int arrayWidth,
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int arrayHeight);
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status_t getArrayDimensionsToBeUsed(const CameraMetadata *settings, int32_t *arrayWidth,
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int32_t *arrayHeight);
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};
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} // namespace camera3
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} // namespace android
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#endif
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