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60 lines
2.2 KiB
60 lines
2.2 KiB
4 months ago
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/*
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* Copyright (C) 2015 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 METADATA_H_
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#define METADATA_H_
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#include <stdint.h>
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#include <hardware/camera3.h>
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#include <system/camera_metadata.h>
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namespace usb_camera_hal {
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// Metadata is a convenience class for dealing with libcamera_metadata
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class Metadata {
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public:
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Metadata();
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~Metadata();
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// Initialize with framework metadata
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int init(const camera_metadata_t *metadata);
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// Parse and add an entry. Allocates and copies new storage for *data.
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int addUInt8(uint32_t tag, int count, const uint8_t *data);
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int add1UInt8(uint32_t tag, const uint8_t data);
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int addInt32(uint32_t tag, int count, const int32_t *data);
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int addFloat(uint32_t tag, int count, const float *data);
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int addInt64(uint32_t tag, int count, const int64_t *data);
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int addDouble(uint32_t tag, int count, const double *data);
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int addRational(uint32_t tag, int count,
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const camera_metadata_rational_t *data);
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// Get a handle to the current metadata
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// This is not a durable handle, and may be destroyed by add*/init
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camera_metadata_t* get();
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private:
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// Actual internal storage
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camera_metadata_t* mData;
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// Destroy old metadata and replace with new
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void replace(camera_metadata_t *m);
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// Validate the tag, type and count for a metadata entry
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bool validate(uint32_t tag, int tag_type, int count);
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// Add a verified tag with data
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int add(uint32_t tag, int count, const void *tag_data);
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};
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} // namespace usb_camera_hal
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#endif // METADATA_H_
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