165 lines
7.3 KiB
C++
165 lines
7.3 KiB
C++
/*
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* Copyright 2020 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_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSEMULATEDCAMERA_H
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#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSEMULATEDCAMERA_H
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#include "VideoCapture.h"
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#include <functional>
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#include <unordered_map>
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#include <android/hardware/automotive/evs/1.1/types.h>
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#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
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#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
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#include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
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#include <android/hardware/camera/device/3.2/ICameraDevice.h>
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#include <ui/GraphicBuffer.h>
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using ::android::hardware::hidl_string;
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using ::android::hardware::camera::device::V3_2::Stream;
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using ::android::hardware::automotive::evs::V1_0::EvsResult;
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using ::android::hardware::automotive::evs::V1_1::CameraDesc;
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using IEvsDisplay_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
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using IEvsDisplay_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
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using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
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using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
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using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
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using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream;
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using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream;
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using ::android::hardware::Return;
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using ::android::hardware::hidl_vec;
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using namespace ::android::hardware::automotive::evs::V1_1;
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namespace android {
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namespace automotive {
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namespace evs {
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namespace V1_1 {
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namespace implementation {
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struct EmulatedCameraDesc {
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int width; // Camera output width in pixels
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int height; // Camera output height in pixels
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std::string path; // Path to the directory where source files are stored
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std::chrono::nanoseconds interval; // Interval between two consecutive frames; this is
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// a reciprocal of the framerate
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};
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class EvsEmulatedCamera : public IEvsCamera_1_1 {
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public:
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// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
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Return<void> getCameraInfo(getCameraInfo_cb _hidl_cb) override;
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Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
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Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream) override;
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Return<void> doneWithFrame(const BufferDesc_1_0& buffer) override;
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Return<void> stopVideoStream() override;
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Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override;
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Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
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// Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
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Return<void> getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) override;
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Return<void> getPhysicalCameraInfo(const hidl_string& deviceId,
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getPhysicalCameraInfo_cb _hidl_cb) override;
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Return<EvsResult> pauseVideoStream() override;
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Return<EvsResult> resumeVideoStream() override;
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Return<EvsResult> doneWithFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override;
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Return<EvsResult> setMaster() override;
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Return<EvsResult> forceMaster(const sp<IEvsDisplay_1_0>&) override;
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Return<EvsResult> unsetMaster() override;
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Return<void> getParameterList(getParameterList_cb _hidl_cb) override;
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Return<void> getIntParameterRange(CameraParam id,
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getIntParameterRange_cb _hidl_cb) override;
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Return<void> setIntParameter(CameraParam id, int32_t value,
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setIntParameter_cb _hidl_cb) override;
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Return<void> getIntParameter(CameraParam id,
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getIntParameter_cb _hidl_cb) override;
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Return<EvsResult> setExtendedInfo_1_1(uint32_t opaqueIdentifier,
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const hidl_vec<uint8_t>& opaqueValue) override;
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Return<void> getExtendedInfo_1_1(uint32_t opaqueIdentifier,
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getExtendedInfo_1_1_cb _hidl_cb) override;
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Return<void> importExternalBuffers(const hidl_vec<BufferDesc_1_1>& buffers,
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importExternalBuffers_cb _hidl_cb) override;
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static sp<EvsEmulatedCamera> Create(const char *deviceName,
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const EmulatedCameraDesc& desc);
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EvsEmulatedCamera(const EvsEmulatedCamera&) = delete;
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EvsEmulatedCamera& operator=(const EvsEmulatedCamera&) = delete;
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virtual ~EvsEmulatedCamera() override;
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void shutdown();
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const CameraDesc& getDesc() { return mDescription; };
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bool openDevice();
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private:
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// Constructors
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EvsEmulatedCamera(const char *deviceName,
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const EmulatedCameraDesc& desc);
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// These three functions are expected to be called while mAccessLock is held
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bool setAvailableFrames_Locked(unsigned bufferCount);
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unsigned increaseAvailableFrames_Locked(unsigned numToAdd);
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unsigned decreaseAvailableFrames_Locked(unsigned numToRemove);
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void forwardFrame(imageBufferDesc* tgt, void* data);
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sp<IEvsCameraStream_1_1> mStream = nullptr; // The callback used to deliver each frame
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sp<VideoCapture> mVideo; // Virtual video device
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CameraDesc mDescription; // The properties of this camera
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uint32_t mFormat = 0; // Values from android_pixel_format_t
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uint32_t mUsage = 0; // Values from from Gralloc.h
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uint32_t mStride = 0; // Number of bytes from one row of pixels in memory
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// to the next
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struct BufferRecord {
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buffer_handle_t handle;
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bool inUse;
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explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false) {};
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};
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std::vector <BufferRecord> mBuffers; // Graphics buffers to transfer images
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unsigned mFramesAllowed; // How many buffers are we currently using
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unsigned mFramesInUse; // How many buffers are currently outstanding
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EvsResult doneWithFrame_impl(const uint32_t id, const buffer_handle_t handle);
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// Synchronization necessary to deconflict the capture thread from the main service thread
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// Note that the service interface remains single threaded (ie: not reentrant)
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std::mutex mAccessLock;
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// Extended information
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std::unordered_map<uint32_t, std::vector<uint8_t>> mExtInfo;
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// Emulated device description
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EmulatedCameraDesc mCaptureDeviceDesc;
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};
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} // namespace implementation
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} // namespace V1_1
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} // namespace evs
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} // namespace automotive
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} // namespace android
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#endif // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSEMULATEDCAMERA_H
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