/*
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* Copyright (C) 2012 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_CAMERA2_CALLBACKPROCESSOR_H
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#define ANDROID_SERVERS_CAMERA_CAMERA2_CALLBACKPROCESSOR_H
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#include <utils/Thread.h>
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#include <utils/String16.h>
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#include <utils/Vector.h>
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#include <utils/Mutex.h>
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#include <utils/Condition.h>
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#include <gui/CpuConsumer.h>
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#include "api1/client2/Camera2Heap.h"
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namespace android {
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class Camera2Client;
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class CameraDeviceBase;
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namespace camera2 {
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struct Parameters;
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/***
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* Still image capture output image processing
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*/
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class CallbackProcessor:
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public Thread, public CpuConsumer::FrameAvailableListener {
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public:
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explicit CallbackProcessor(sp<Camera2Client> client);
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~CallbackProcessor();
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void onFrameAvailable(const BufferItem& item);
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// Set to NULL to disable the direct-to-app callback window
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status_t setCallbackWindow(const sp<Surface>& callbackWindow);
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status_t updateStream(const Parameters ¶ms);
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status_t deleteStream();
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int getStreamId() const;
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void dump(int fd, const Vector<String16>& args) const;
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private:
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static const nsecs_t kWaitDuration = 10000000; // 10 ms
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wp<Camera2Client> mClient;
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wp<CameraDeviceBase> mDevice;
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int mId;
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mutable Mutex mInputMutex;
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bool mCallbackAvailable;
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Condition mCallbackAvailableSignal;
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enum {
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NO_STREAM = -1
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};
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// True if mCallbackWindow is a remote consumer, false if just the local
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// mCallbackConsumer
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bool mCallbackToApp;
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int mCallbackStreamId;
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static const size_t kCallbackHeapCount = 6;
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sp<CpuConsumer> mCallbackConsumer;
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sp<Surface> mCallbackWindow;
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sp<Camera2Heap> mCallbackHeap;
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size_t mCallbackHeapHead, mCallbackHeapFree;
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virtual bool threadLoop();
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status_t processNewCallback(sp<Camera2Client> &client);
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// Used when shutting down
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status_t discardNewCallback();
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// Convert from flexible YUV to NV21 or YV12
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status_t convertFromFlexibleYuv(int32_t previewFormat,
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uint8_t *dst,
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const CpuConsumer::LockedBuffer &src,
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uint32_t dstYStride,
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uint32_t dstCStride) const;
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};
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}; //namespace camera2
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}; //namespace android
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#endif
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