1 /* 2 * Copyright (C) 2016 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 V4L2_CAMERA_HAL_METADATA_PARTIAL_METADATA_INTERFACE_H_ 18 #define V4L2_CAMERA_HAL_METADATA_PARTIAL_METADATA_INTERFACE_H_ 19 20 #include <vector> 21 22 #include <camera/CameraMetadata.h> 23 24 namespace v4l2_camera_hal { 25 26 // A subset of metadata. 27 class PartialMetadataInterface { 28 public: ~PartialMetadataInterface()29 virtual ~PartialMetadataInterface(){}; 30 31 // The metadata tags this partial metadata is responsible for. 32 // See system/media/camera/docs/docs.html for descriptions of each tag. 33 virtual std::vector<int32_t> StaticTags() const = 0; 34 virtual std::vector<int32_t> ControlTags() const = 0; 35 virtual std::vector<int32_t> DynamicTags() const = 0; 36 37 // Add all the static properties this partial metadata 38 // is responsible for to |metadata|. 39 virtual int PopulateStaticFields(android::CameraMetadata* metadata) const = 0; 40 // Add all the dynamic states this partial metadata 41 // is responsible for to |metadata|. 42 virtual int PopulateDynamicFields( 43 android::CameraMetadata* metadata) const = 0; 44 // Add default request values for a given template type for all the controls 45 // this partial metadata owns. 46 virtual int PopulateTemplateRequest( 47 int template_type, android::CameraMetadata* metadata) const = 0; 48 // Check if the requested control values from |metadata| (for controls 49 // this partial metadata owns) are supported. Empty/null values for owned 50 // control tags indicate no change, and are thus inherently supported. 51 // If |metadata| is empty all controls are implicitly supported. 52 virtual bool SupportsRequestValues( 53 const android::CameraMetadata& metadata) const = 0; 54 // Set all the controls this partial metadata 55 // is responsible for from |metadata|. Empty/null values for owned control 56 // tags indicate no change. If |metadata| is empty no controls should 57 // be changed. 58 virtual int SetRequestValues(const android::CameraMetadata& metadata) = 0; 59 }; 60 61 } // namespace v4l2_camera_hal 62 63 #endif // V4L2_CAMERA_HAL_METADATA_PARTIAL_METADATA_INTERFACE_H_ 64