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118 lines
3.8 KiB
118 lines
3.8 KiB
/*
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* Copyright (C) 2013-2018 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_CAMERA3_IO_STREAM_BASE_H
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#define ANDROID_SERVERS_CAMERA3_IO_STREAM_BASE_H
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#include <utils/RefBase.h>
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#include <gui/Surface.h>
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#include "Camera3Stream.h"
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namespace android {
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namespace camera3 {
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/**
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* A base class for managing a single stream of I/O data from the camera device.
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*/
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class Camera3IOStreamBase :
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public Camera3Stream {
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protected:
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Camera3IOStreamBase(int id, camera_stream_type_t type,
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uint32_t width, uint32_t height, size_t maxSize, int format,
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android_dataspace dataSpace, camera_stream_rotation_t rotation,
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const String8& physicalCameraId,
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const std::unordered_set<int32_t> &sensorPixelModesUsed,
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int setId = CAMERA3_STREAM_SET_ID_INVALID, bool isMultiResolution = false);
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public:
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virtual ~Camera3IOStreamBase();
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/**
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* Camera3Stream interface
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*/
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virtual void dump(int fd, const Vector<String16> &args) const;
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int getMaxTotalBuffers() const { return mTotalBufferCount; }
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protected:
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size_t mTotalBufferCount;
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// sum of input and output buffers that are currently acquired by HAL
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size_t mHandoutTotalBufferCount;
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// number of output buffers that are currently acquired by HAL. This will be
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// Redundant when camera3 streams are no longer bidirectional streams.
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size_t mHandoutOutputBufferCount;
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uint32_t mFrameCount;
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// Last received output buffer's timestamp
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nsecs_t mLastTimestamp;
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// The merged release fence for all returned buffers
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sp<Fence> mCombinedFence;
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status_t returnAnyBufferLocked(
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const camera_stream_buffer &buffer,
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nsecs_t timestamp,
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bool output,
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const std::vector<size_t>& surface_ids = std::vector<size_t>());
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virtual status_t returnBufferCheckedLocked(
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const camera_stream_buffer &buffer,
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nsecs_t timestamp,
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bool output,
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const std::vector<size_t>& surface_ids,
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/*out*/
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sp<Fence> *releaseFenceOut) = 0;
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/**
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* Internal Camera3Stream interface
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*/
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virtual bool hasOutstandingBuffersLocked() const;
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virtual size_t getBufferCountLocked();
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virtual size_t getHandoutOutputBufferCountLocked() const;
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virtual size_t getHandoutInputBufferCountLocked();
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virtual status_t getEndpointUsage(uint64_t *usage) const = 0;
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status_t getBufferPreconditionCheckLocked() const;
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status_t returnBufferPreconditionCheckLocked() const;
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// State check only
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virtual status_t configureQueueLocked();
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// State checks only
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virtual status_t disconnectLocked();
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// Hand out the buffer to a native location,
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// incrementing the internal refcount and dequeued buffer count
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void handoutBufferLocked(camera_stream_buffer &buffer,
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buffer_handle_t *handle,
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int acquire_fence,
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int release_fence,
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camera_buffer_status_t status,
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bool output);
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}; // class Camera3IOStreamBase
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} // namespace camera3
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} // namespace android
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#endif
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