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96 lines
2.9 KiB
96 lines
2.9 KiB
/* |
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* Copyright (C) 2016 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 V4L2_CAMERA_HAL_METADATA_STATE_H_ |
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#define V4L2_CAMERA_HAL_METADATA_STATE_H_ |
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#include "../common.h" |
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#include "metadata_common.h" |
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#include "partial_metadata_interface.h" |
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#include "state_delegate_interface.h" |
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namespace v4l2_camera_hal { |
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// A State is a PartialMetadata that only has a single dynamic value. |
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template <typename T> |
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class State : public PartialMetadataInterface { |
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public: |
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State(int32_t tag, std::unique_ptr<StateDelegateInterface<T>> delegate) |
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: tag_(tag), delegate_(std::move(delegate)){}; |
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virtual std::vector<int32_t> StaticTags() const override { return {}; }; |
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virtual std::vector<int32_t> ControlTags() const override { return {}; }; |
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virtual std::vector<int32_t> DynamicTags() const override { return {tag_}; }; |
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virtual int PopulateStaticFields( |
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android::CameraMetadata* metadata) const override; |
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virtual int PopulateDynamicFields( |
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android::CameraMetadata* metadata) const override; |
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virtual int PopulateTemplateRequest( |
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int template_type, android::CameraMetadata* metadata) const override; |
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virtual bool SupportsRequestValues( |
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const android::CameraMetadata& metadata) const override; |
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virtual int SetRequestValues( |
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const android::CameraMetadata& metadata) override; |
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private: |
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int32_t tag_; |
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std::unique_ptr<StateDelegateInterface<T>> delegate_; |
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}; |
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// ----------------------------------------------------------------------------- |
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template <typename T> |
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int State<T>::PopulateStaticFields(android::CameraMetadata* metadata) const { |
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HAL_LOG_ENTER(); |
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return 0; |
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} |
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template <typename T> |
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int State<T>::PopulateDynamicFields(android::CameraMetadata* metadata) const { |
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HAL_LOG_ENTER(); |
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T value; |
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int res = delegate_->GetValue(&value); |
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if (res) { |
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return res; |
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} |
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return UpdateMetadata(metadata, tag_, value); |
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}; |
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template <typename T> |
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int State<T>::PopulateTemplateRequest(int template_type, |
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android::CameraMetadata* metadata) const { |
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HAL_LOG_ENTER(); |
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return 0; |
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}; |
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template <typename T> |
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bool State<T>::SupportsRequestValues( |
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const android::CameraMetadata& metadata) const { |
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HAL_LOG_ENTER(); |
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return true; |
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}; |
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template <typename T> |
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int State<T>::SetRequestValues(const android::CameraMetadata& metadata) { |
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HAL_LOG_ENTER(); |
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return 0; |
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}; |
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} // namespace v4l2_camera_hal |
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#endif // V4L2_CAMERA_HAL_METADATA_STATE_H_
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