blob: 28bd7b8423a456fcd8f99cc30f0d7d988ef13137 [file] [log] [blame]
/*
* Copyright (C) 2016 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_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSV4LCAMERA_H
#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSV4LCAMERA_H
#include "VideoCapture.h"
#include "ConfigManager.h"
#include <functional>
#include <thread>
#include <android/hardware/automotive/evs/1.1/types.h>
#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
#include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
#include <android/hardware/camera/device/3.2/ICameraDevice.h>
#include <android-base/result.h>
#include <ui/GraphicBuffer.h>
using ::android::hardware::hidl_string;
using ::android::hardware::camera::device::V3_2::Stream;
using ::android::hardware::automotive::evs::V1_0::EvsResult;
using ::android::hardware::automotive::evs::V1_0::CameraDesc;
using IEvsDisplay_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
using IEvsDisplay_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream;
using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream;
namespace android {
namespace hardware {
namespace automotive {
namespace evs {
namespace V1_1 {
namespace implementation {
// From EvsEnumerator.h
class EvsEnumerator;
class EvsV4lCamera : public IEvsCamera {
public:
// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
Return<void> getCameraInfo(getCameraInfo_cb _hidl_cb) override;
Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream) override;
Return<void> doneWithFrame(const BufferDesc_1_0& buffer) override;
Return<void> stopVideoStream() override;
Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override;
Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
// Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
Return<void> getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) override;
Return<void> getPhysicalCameraInfo(const hidl_string& deviceId,
getPhysicalCameraInfo_cb _hidl_cb) override;
Return<EvsResult> pauseVideoStream() override;
Return<EvsResult> resumeVideoStream() override;
Return<EvsResult> doneWithFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override;
Return<EvsResult> setMaster() override;
Return<EvsResult> forceMaster(const sp<IEvsDisplay_1_0>&) override;
Return<EvsResult> unsetMaster() override;
Return<void> getParameterList(getParameterList_cb _hidl_cb) override;
Return<void> getIntParameterRange(CameraParam id,
getIntParameterRange_cb _hidl_cb) override;
Return<void> setIntParameter(CameraParam id, int32_t value,
setIntParameter_cb _hidl_cb) override;
Return<void> getIntParameter(CameraParam id,
getIntParameter_cb _hidl_cb) override;
Return<EvsResult> setExtendedInfo_1_1(uint32_t opaqueIdentifier,
const hidl_vec<uint8_t>& opaqueValue) override;
Return<void> getExtendedInfo_1_1(uint32_t opaqueIdentifier,
getExtendedInfo_1_1_cb _hidl_cb) override;
Return<void> importExternalBuffers(const hidl_vec<BufferDesc_1_1>& buffers,
importExternalBuffers_cb _hidl_cb) override;
static sp<EvsV4lCamera> Create(const char *deviceName);
static sp<EvsV4lCamera> Create(const char *deviceName,
unique_ptr<ConfigManager::CameraInfo> &camInfo,
const Stream *streamCfg = nullptr);
EvsV4lCamera(const EvsV4lCamera&) = delete;
EvsV4lCamera& operator=(const EvsV4lCamera&) = delete;
virtual ~EvsV4lCamera() override;
void shutdown();
const CameraDesc& getDesc() { return mDescription; };
// Dump captured frames to the filesystem
android::base::Result<void> startDumpFrames(const std::string& path);
android::base::Result<void> stopDumpFrames();
private:
// Constructors
EvsV4lCamera(const char *deviceName,
unique_ptr<ConfigManager::CameraInfo> &camInfo);
// These three functions are expected to be called while mAccessLock is held
bool setAvailableFrames_Locked(unsigned bufferCount);
unsigned increaseAvailableFrames_Locked(unsigned numToAdd);
unsigned decreaseAvailableFrames_Locked(unsigned numToRemove);
void forwardFrame(imageBuffer* tgt, void* data);
inline bool convertToV4l2CID(CameraParam id, uint32_t& v4l2cid);
sp <IEvsCameraStream_1_0> mStream = nullptr; // The callback used to deliver each frame
sp <IEvsCameraStream_1_1> mStream_1_1 = nullptr; // The callback used to deliver each frame
VideoCapture mVideo; // Interface to the v4l device
CameraDesc mDescription = {}; // The properties of this camera
uint32_t mFormat = 0; // Values from android_pixel_format_t
uint32_t mUsage = 0; // Values from from Gralloc.h
uint32_t mStride = 0; // Pixels per row (may be greater than image width)
struct BufferRecord {
buffer_handle_t handle;
bool inUse;
explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false) {};
};
std::vector <BufferRecord> mBuffers; // Graphics buffers to transfer images
unsigned mFramesAllowed; // How many buffers are we currently using
unsigned mFramesInUse; // How many buffers are currently outstanding
std::set<uint32_t> mCameraControls; // Available camera controls
// Which format specific function we need to use to move camera imagery into our output buffers
void(*mFillBufferFromVideo)(const BufferDesc& tgtBuff, uint8_t* tgt,
void* imgData, void* buf, unsigned imgStride);
EvsResult doneWithFrame_impl(const uint32_t id, const buffer_handle_t handle);
// Synchronization necessary to deconflict the capture thread from the main service thread
// Note that the service interface remains single threaded (ie: not reentrant)
std::mutex mAccessLock;
// Static camera module information
unique_ptr<ConfigManager::CameraInfo> &mCameraInfo;
// Extended information
std::unordered_map<uint32_t, std::vector<uint8_t>> mExtInfo;
// Dump captured frames
std::atomic<bool> mDumpFrame = false;
// Path to store captured frames
std::string mDumpPath;
// Frame counter
uint64_t mFrameCounter = 0;
// A buffer to hold an intermediate color conversion data
std::vector<uint8_t> mColorSpaceConversionBuffer;
};
} // namespace implementation
} // namespace V1_1
} // namespace evs
} // namespace automotive
} // namespace hardware
} // namespace android
#endif // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSV4LCAMERA_H