You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
3.6 KiB
97 lines
3.6 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2017 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 EVS_VTS_STREAMHANDLER_H
|
||
|
|
#define EVS_VTS_STREAMHANDLER_H
|
||
|
|
|
||
|
|
#include <queue>
|
||
|
|
|
||
|
|
#include "ui/GraphicBuffer.h"
|
||
|
|
|
||
|
|
#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
|
||
|
|
#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
|
||
|
|
#include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
|
||
|
|
|
||
|
|
using namespace ::android::hardware::automotive::evs::V1_1;
|
||
|
|
using ::android::hardware::Return;
|
||
|
|
using ::android::hardware::Void;
|
||
|
|
using ::android::hardware::hidl_vec;
|
||
|
|
using ::android::hardware::hidl_handle;
|
||
|
|
using ::android::sp;
|
||
|
|
using ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
|
||
|
|
using EvsDisplayState = ::android::hardware::automotive::evs::V1_0::DisplayState;
|
||
|
|
using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
|
||
|
|
using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* StreamHandler:
|
||
|
|
* This class can be used to receive camera imagery from an IEvsCamera implementation. It will
|
||
|
|
* hold onto the most recent image buffer, returning older ones.
|
||
|
|
* Note that the video frames are delivered on a background thread, while the control interface
|
||
|
|
* is actuated from the applications foreground thread.
|
||
|
|
*/
|
||
|
|
class StreamHandler : public IEvsCameraStream {
|
||
|
|
public:
|
||
|
|
virtual ~StreamHandler() { shutdown(); };
|
||
|
|
|
||
|
|
StreamHandler(android::sp <IEvsCamera> pCamera,
|
||
|
|
uint32_t numBuffers = 2,
|
||
|
|
bool useOwnBuffers = false,
|
||
|
|
android_pixel_format_t format = HAL_PIXEL_FORMAT_RGBA_8888,
|
||
|
|
int32_t width = 640,
|
||
|
|
int32_t height = 360);
|
||
|
|
void shutdown();
|
||
|
|
|
||
|
|
bool startStream();
|
||
|
|
void asyncStopStream();
|
||
|
|
void blockingStopStream();
|
||
|
|
|
||
|
|
bool isRunning();
|
||
|
|
|
||
|
|
bool newFrameAvailable();
|
||
|
|
const BufferDesc_1_1& getNewFrame();
|
||
|
|
void doneWithFrame(const BufferDesc_1_1& buffer);
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Implementation for ::android::hardware::automotive::evs::V1_0::IEvsCameraStream
|
||
|
|
Return<void> deliverFrame(const BufferDesc_1_0& buffer) override;
|
||
|
|
|
||
|
|
// Implementation for ::android::hardware::automotive::evs::V1_1::IEvsCameraStream
|
||
|
|
Return<void> deliverFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override;
|
||
|
|
Return<void> notify(const EvsEventDesc& event) override;
|
||
|
|
|
||
|
|
// Values initialized as startup
|
||
|
|
android::sp <IEvsCamera> mCamera;
|
||
|
|
|
||
|
|
// Since we get frames delivered to us asnchronously via the ICarCameraStream interface,
|
||
|
|
// we need to protect all member variables that may be modified while we're streaming
|
||
|
|
// (ie: those below)
|
||
|
|
std::mutex mLock;
|
||
|
|
std::condition_variable mSignal;
|
||
|
|
|
||
|
|
bool mRunning = false;
|
||
|
|
|
||
|
|
BufferDesc mBuffers[2];
|
||
|
|
int mHeldBuffer = -1; // Index of the one currently held by the client
|
||
|
|
int mReadyBuffer = -1; // Index of the newest available buffer
|
||
|
|
hidl_vec<BufferDesc_1_1> mOwnBuffers;
|
||
|
|
bool mUseOwnBuffers;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif //EVS_VTS_STREAMHANDLER_H
|