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/*
* Copyright (C) 2012 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_CAMERA_CAMERA2_ZSLPROCESSOR_H
#define ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR_H
#include <utils/Thread.h>
#include <utils/String16.h>
#include <utils/Vector.h>
#include <utils/Mutex.h>
#include <utils/Condition.h>
#include <gui/BufferItemConsumer.h>
#include "Parameters.h"
#include "FrameProcessor.h"
#include "CameraMetadata.h"
#include "Camera2Heap.h"
#include "../Camera2Device.h"
namespace android {
class Camera2Client;
namespace camera2 {
class CaptureSequencer;
/***
* ZSL queue processing
*/
class ZslProcessor:
virtual public Thread,
virtual public BufferItemConsumer::FrameAvailableListener,
virtual public FrameProcessor::FilteredListener,
virtual public Camera2Device::BufferReleasedListener {
public:
ZslProcessor(wp<Camera2Client> client, wp<CaptureSequencer> sequencer);
~ZslProcessor();
// From mZslConsumer
virtual void onFrameAvailable();
// From FrameProcessor
virtual void onFrameAvailable(int32_t frameId, const CameraMetadata &frame);
virtual void onBufferReleased(buffer_handle_t *handle);
status_t updateStream(const Parameters ¶ms);
status_t deleteStream();
int getStreamId() const;
int getReprocessStreamId() const;
status_t pushToReprocess(int32_t requestId);
status_t clearZslQueue();
void dump(int fd, const Vector<String16>& args) const;
private:
static const nsecs_t kWaitDuration = 10000000; // 10 ms
enum {
RUNNING,
LOCKED
} mState;
wp<Camera2Client> mClient;
wp<CaptureSequencer> mSequencer;
mutable Mutex mInputMutex;
bool mZslBufferAvailable;
Condition mZslBufferAvailableSignal;
enum {
NO_STREAM = -1
};
int mZslStreamId;
int mZslReprocessStreamId;
sp<BufferItemConsumer> mZslConsumer;
sp<ANativeWindow> mZslWindow;
struct ZslPair {
BufferItemConsumer::BufferItem buffer;
CameraMetadata frame;
};
static const size_t kZslBufferDepth = 4;
static const size_t kFrameListDepth = kZslBufferDepth * 2;
Vector<CameraMetadata> mFrameList;
size_t mFrameListHead;
ZslPair mNextPair;
Vector<ZslPair> mZslQueue;
size_t mZslQueueHead;
size_t mZslQueueTail;
CameraMetadata mLatestCapturedRequest;
virtual bool threadLoop();
status_t processNewZslBuffer(sp<Camera2Client> &client);
// Match up entries from frame list to buffers in ZSL queue
void findMatchesLocked();
status_t clearZslQueueLocked();
void dumpZslQueue(int id) const;
};
}; //namespace camera2
}; //namespace android
#endif
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