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/*
* Copyright (C) 2013 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/BufferItem.h>
#include <gui/BufferItemConsumer.h>
#include <gui/RingBufferConsumer.h>
#include <gui/IProducerListener.h>
#include <camera/CameraMetadata.h>
#include "api1/client2/FrameProcessor.h"
namespace android {
class Camera2Client;
namespace camera2 {
class CaptureSequencer;
struct Parameters;
/***
* ZSL queue processing for HALv3.0 or newer
*/
class ZslProcessor :
virtual public Thread,
virtual public FrameProcessor::FilteredListener {
public:
ZslProcessor(sp<Camera2Client> client, wp<CaptureSequencer> sequencer);
~ZslProcessor();
// From FrameProcessor::FilteredListener
virtual void onResultAvailable(const CaptureResult &result);
/**
****************************************
* ZslProcessorInterface implementation *
****************************************
*/
// Update the streams by recreating them if the size/format has changed
status_t updateStream(const Parameters &params);
// Delete the underlying CameraDevice streams
status_t deleteStream();
// Get ID for use with android.request.outputStreams / inputStreams
int getStreamId() const;
/**
* Submits a ZSL capture request (id = requestId)
*
* An appropriate ZSL buffer is selected by the closest timestamp,
* then we push that buffer to be reprocessed by the HAL.
* A capture request is created and submitted on behalf of the client.
*/
status_t pushToReprocess(int32_t requestId);
// Flush the ZSL buffer queue, freeing up all the buffers
status_t clearZslQueue();
void dump(int fd, const Vector<String16>& args) const;
private:
class InputProducerListener : public BnProducerListener {
public:
InputProducerListener(wp<ZslProcessor> parent) : mParent(parent) {}
virtual void onBufferReleased();
virtual bool needsReleaseNotify() { return true; }
private:
wp<ZslProcessor> mParent;
};
static const nsecs_t kWaitDuration = 10000000; // 10 ms
nsecs_t mLatestClearedBufferTimestamp;
enum {
RUNNING,
LOCKED
} mState;
enum { NO_BUFFER_AVAILABLE = BufferQueue::NO_BUFFER_AVAILABLE };
wp<Camera2Client> mClient;
wp<CaptureSequencer> mSequencer;
const int mId;
mutable Mutex mInputMutex;
enum {
NO_STREAM = -1
};
int mZslStreamId;
int mInputStreamId;
struct ZslPair {
BufferItem buffer;
CameraMetadata frame;
};
static const int32_t kDefaultMaxPipelineDepth = 4;
size_t mBufferQueueDepth;
size_t mFrameListDepth;
std::vector<CameraMetadata> mFrameList;
size_t mFrameListHead;
ZslPair mNextPair;
Vector<ZslPair> mZslQueue;
CameraMetadata mLatestCapturedRequest;
bool mHasFocuser;
// Input buffer queued into HAL
sp<RingBufferConsumer::PinnedBufferItem> mInputBuffer;
sp<RingBufferConsumer> mProducer;
sp<IGraphicBufferProducer> mInputProducer;
int mInputProducerSlot;
Condition mBuffersToDetachSignal;
int mBuffersToDetach;
virtual bool threadLoop();
status_t clearZslQueueLocked();
void clearZslResultQueueLocked();
void dumpZslQueue(int id) const;
nsecs_t getCandidateTimestampLocked(size_t* metadataIdx) const;
status_t enqueueInputBufferByTimestamp( nsecs_t timestamp,
nsecs_t* actualTimestamp);
status_t clearInputRingBufferLocked(nsecs_t* latestTimestamp);
void notifyInputReleased();
void doNotifyInputReleasedLocked();
bool isFixedFocusMode(uint8_t afMode) const;
// Update the post-processing metadata with the default still capture request template
status_t updateRequestWithDefaultStillRequest(CameraMetadata &request) const;
};
}; //namespace camera2
}; //namespace android
#endif