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/*
* Copyright (C) 2013-2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SERVERS_CAMERA3_INPUT_STREAM_H
#define ANDROID_SERVERS_CAMERA3_INPUT_STREAM_H
#include <utils/RefBase.h>
#include <gui/Surface.h>
#include <gui/BufferItemConsumer.h>
#include "Camera3IOStreamBase.h"
namespace android {
namespace camera3 {
/**
* A class for managing a single stream of input data to the camera device.
*
* This class serves as a consumer adapter for the HAL, and will consume the
* buffers by feeding them into the HAL, as well as releasing the buffers back
* the buffers once the HAL is done with them.
*/
class Camera3InputStream : public Camera3IOStreamBase,
public BufferItemConsumer::BufferFreedListener {
public:
/**
* Set up a stream for formats that have fixed size, such as RAW and YUV.
*/
Camera3InputStream(int id, uint32_t width, uint32_t height, int format);
~Camera3InputStream();
virtual void dump(int fd, const Vector<String16> &args) const;
// TODO: expose an interface to get the IGraphicBufferProducer
private:
sp<BufferItemConsumer> mConsumer;
sp<IGraphicBufferProducer> mProducer;
Vector<BufferItem> mBuffersInFlight;
static const String8 FAKE_ID;
/**
* Camera3IOStreamBase
*/
virtual status_t returnBufferCheckedLocked(
const camera_stream_buffer &buffer,
nsecs_t timestamp,
nsecs_t readoutTimestamp,
bool output,
int32_t transform,
const std::vector<size_t>& surface_ids,
/*out*/
sp<Fence> *releaseFenceOut);
/**
* Camera3Stream interface
*/
virtual status_t getInputBufferLocked(camera_stream_buffer *buffer, Size *size);
virtual status_t returnInputBufferLocked(
const camera_stream_buffer &buffer);
virtual status_t getInputBufferProducerLocked(
sp<IGraphicBufferProducer> *producer);
virtual status_t disconnectLocked();
virtual status_t configureQueueLocked();
virtual status_t getEndpointUsage(uint64_t *usage) const;
/**
* BufferItemConsumer::BufferFreedListener interface
*/
virtual void onBufferFreed(const wp<GraphicBuffer>&) override;
}; // class Camera3InputStream
}; // namespace camera3
}; // namespace android
#endif