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64 lines
1.9 KiB
64 lines
1.9 KiB
/*
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* Copyright (C) 2020 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_CAMERA_FRAMEPRODUCER_H
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#define ANDROID_SERVERS_CAMERA_FRAMEPRODUCER_H
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#include <utils/RefBase.h>
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#include <utils/String8.h>
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#include <utils/Timers.h>
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#include "camera/CameraMetadata.h"
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#include "camera/CaptureResult.h"
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namespace android {
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/**
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* Abstract class for HAL frame producers
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*/
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class FrameProducer : public virtual RefBase {
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public:
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/**
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* Retrieve the static characteristics metadata buffer
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*/
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virtual const CameraMetadata& info() const = 0;
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/**
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* Retrieve the device camera ID
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*/
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virtual const String8& getId() const = 0;
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/**
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* Wait for a new frame to be produced, with timeout in nanoseconds.
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* Returns TIMED_OUT when no frame produced within the specified duration
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* May be called concurrently to most methods, except for getNextFrame
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*/
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virtual status_t waitForNextFrame(nsecs_t timeout) = 0;
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/**
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* Get next capture result frame from the result queue. Returns NOT_ENOUGH_DATA
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* if the queue is empty; caller takes ownership of the metadata buffer inside
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* the capture result object's metadata field.
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* May be called concurrently to most methods, except for waitForNextFrame.
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*/
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virtual status_t getNextResult(CaptureResult *frame) = 0;
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}; // class FrameProducer
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} // namespace android
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#endif
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