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77 lines
2.8 KiB
77 lines
2.8 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 DEFAULT_CAMERA_HAL_METADATA_METADATA_READER_H_ |
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#define DEFAULT_CAMERA_HAL_METADATA_METADATA_READER_H_ |
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#include <map> |
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#include <memory> |
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#include <set> |
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#include <vector> |
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#include <camera/CameraMetadata.h> |
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#include "../common.h" |
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#include "types.h" |
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namespace default_camera_hal { |
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// A MetadataReader reads and converts/validates various metadata entries. |
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class MetadataReader { |
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public: |
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MetadataReader(std::unique_ptr<const android::CameraMetadata> metadata); |
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virtual ~MetadataReader(); |
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// Get a pointer to the underlying metadata being read. |
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// The pointer is valid only as long as this object is alive. |
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// The "locking" here only causes non-const methods to fail, |
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// which is not a problem since the CameraMetadata being locked |
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// is already const. This could be a problem if the metadata was |
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// shared more widely, but |metadata_| is a unique_ptr, |
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// guaranteeing the safety of this. Destructing automatically "unlocks". |
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virtual const camera_metadata_t* raw_metadata() const { |
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return metadata_->getAndLock(); |
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} |
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// All accessor methods must be given a valid pointer. They will return: |
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// 0: Success. |
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// -ENOENT: The necessary entry is missing. |
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// -EINVAL: The entry value is invalid. |
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// -ENODEV: Some other error occured. |
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// The |facing| returned will be one of the enum values from system/camera.h. |
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virtual int Facing(int* facing) const; |
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virtual int Orientation(int* orientation) const; |
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virtual int MaxInputStreams(int32_t* max_input_streams) const; |
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virtual int MaxOutputStreams(int32_t* max_raw_output_streams, |
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int32_t* max_non_stalling_output_streams, |
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int32_t* max_stalling_output_streams) const; |
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virtual int RequestCapabilities(std::set<uint8_t>* capabilites) const; |
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virtual int StreamConfigurations( |
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std::vector<StreamConfiguration>* configs) const; |
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virtual int StreamStallDurations( |
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std::vector<StreamStallDuration>* stalls) const; |
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virtual int ReprocessFormats(ReprocessFormatMap* reprocess_map) const; |
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private: |
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std::unique_ptr<const android::CameraMetadata> metadata_; |
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DISALLOW_COPY_AND_ASSIGN(MetadataReader); |
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}; |
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} // namespace default_camera_hal |
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#endif // DEFAULT_CAMERA_HAL_METADATA_METADATA_READER_H_
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