Merge pull request #19597 from komakai:android-ndk-camera
Android NDK camera support * Add native camera video backend for Android * In the event of a "No buffer available error" wait for the appropriate callback and retry * Fix stale context when creating a new AndroidCameraCapture * Add property handlingpull/19633/head
Giles Payne
4 years ago
committed by
GitHub
parent
543379d343
commit
0553543e6e
10 changed files with 749 additions and 3 deletions
@ -0,0 +1,8 @@ |
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# if(ANDROID AND ANDROID_NATIVE_API_LEVEL GREATER_EQUAL 24) <-- would be nicer but requires CMake 3.7 or later |
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if(ANDROID AND ANDROID_NATIVE_API_LEVEL GREATER 23) |
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set(HAVE_ANDROID_NATIVE_CAMERA TRUE) |
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set(libs "-landroid -llog -lcamera2ndk") |
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ocv_add_external_target(android_native_camera "" "${libs}" "HAVE_ANDROID_NATIVE_CAMERA") |
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endif() |
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set(HAVE_ANDROID_NATIVE_CAMERA ${HAVE_ANDROID_NATIVE_CAMERA} PARENT_SCOPE) |
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@ -0,0 +1,691 @@ |
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// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html
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// Contributed by Giles Payne
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#include "precomp.hpp" |
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#include <memory> |
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#include <condition_variable> |
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#include <mutex> |
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#include <thread> |
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#include <chrono> |
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#include <android/log.h> |
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#include <camera/NdkCameraManager.h> |
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#include <camera/NdkCameraError.h> |
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#include <camera/NdkCameraDevice.h> |
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#include <camera/NdkCameraMetadataTags.h> |
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#include <media/NdkImageReader.h> |
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using namespace cv; |
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#define TAG "NativeCamera" |
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#define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, TAG, __VA_ARGS__) |
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#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__) |
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#define LOGW(...) __android_log_print(ANDROID_LOG_WARN, TAG, __VA_ARGS__) |
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#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__) |
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#define MAX_BUF_COUNT 4 |
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#define COLOR_FormatUnknown -1 |
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#define COLOR_FormatYUV420Planar 19 |
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#define COLOR_FormatYUV420SemiPlanar 21 |
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template <typename T> class RangeValue { |
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public: |
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T min, max; |
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/**
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* return absolute value from relative value |
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* * value: in percent (50 for 50%) |
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* */ |
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T value(int percent) { |
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return static_cast<T>(min + (max - min) * percent / 100); |
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} |
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RangeValue() { min = max = static_cast<T>(0); } |
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bool Supported(void) const { return (min != max); } |
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}; |
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static inline void deleter_ACameraManager(ACameraManager *cameraManager) { |
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ACameraManager_delete(cameraManager); |
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} |
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static inline void deleter_ACameraIdList(ACameraIdList *cameraIdList) { |
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ACameraManager_deleteCameraIdList(cameraIdList); |
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} |
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static inline void deleter_ACameraDevice(ACameraDevice *cameraDevice) { |
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ACameraDevice_close(cameraDevice); |
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} |
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static inline void deleter_ACameraMetadata(ACameraMetadata *cameraMetadata) { |
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ACameraMetadata_free(cameraMetadata); |
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} |
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static inline void deleter_AImageReader(AImageReader *imageReader) { |
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AImageReader_delete(imageReader); |
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} |
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static inline void deleter_ACaptureSessionOutputContainer(ACaptureSessionOutputContainer *outputContainer) { |
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ACaptureSessionOutputContainer_free(outputContainer); |
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} |
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static inline void deleter_ACameraCaptureSession(ACameraCaptureSession *captureSession) { |
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ACameraCaptureSession_close(captureSession); |
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} |
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static inline void deleter_AImage(AImage *image) { |
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AImage_delete(image); |
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} |
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static inline void deleter_ANativeWindow(ANativeWindow *nativeWindow) { |
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ANativeWindow_release(nativeWindow); |
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} |
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static inline void deleter_ACaptureSessionOutput(ACaptureSessionOutput *sessionOutput) { |
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ACaptureSessionOutput_free(sessionOutput); |
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} |
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static inline void deleter_ACameraOutputTarget(ACameraOutputTarget *outputTarget) { |
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ACameraOutputTarget_free(outputTarget); |
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} |
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static inline void deleter_ACaptureRequest(ACaptureRequest *captureRequest) { |
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ACaptureRequest_free(captureRequest); |
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} |
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/*
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* CameraDevice callbacks |
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*/ |
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static void OnDeviceDisconnect(void* /* ctx */, ACameraDevice* dev) { |
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std::string id(ACameraDevice_getId(dev)); |
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LOGW("Device %s disconnected", id.c_str()); |
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} |
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static void OnDeviceError(void* /* ctx */, ACameraDevice* dev, int err) { |
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std::string id(ACameraDevice_getId(dev)); |
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LOGI("Camera Device Error: %#x, Device %s", err, id.c_str()); |
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switch (err) { |
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case ERROR_CAMERA_IN_USE: |
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LOGI("Camera in use"); |
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break; |
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case ERROR_CAMERA_SERVICE: |
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LOGI("Fatal Error occured in Camera Service"); |
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break; |
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case ERROR_CAMERA_DEVICE: |
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LOGI("Fatal Error occured in Camera Device"); |
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break; |
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case ERROR_CAMERA_DISABLED: |
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LOGI("Camera disabled"); |
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break; |
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case ERROR_MAX_CAMERAS_IN_USE: |
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LOGI("System limit for maximum concurrent cameras used was exceeded"); |
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break; |
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default: |
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LOGI("Unknown Camera Device Error: %#x", err); |
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} |
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} |
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enum class CaptureSessionState { |
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INITIALIZING, // session is ready
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READY, // session is ready
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ACTIVE, // session is busy
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CLOSED // session was closed
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}; |
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void OnSessionClosed(void* context, ACameraCaptureSession* session); |
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void OnSessionReady(void* context, ACameraCaptureSession* session); |
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void OnSessionActive(void* context, ACameraCaptureSession* session); |
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void OnCaptureCompleted(void* context, |
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ACameraCaptureSession* session, |
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ACaptureRequest* request, |
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const ACameraMetadata* result); |
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void OnCaptureFailed(void* context, |
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ACameraCaptureSession* session, |
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ACaptureRequest* request, |
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ACameraCaptureFailure* failure); |
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#define CAPTURE_TIMEOUT_SECONDS 2 |
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/**
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* Range of Camera Exposure Time: |
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* Camera's capability range have a very long range which may be disturbing |
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* on camera. For this sample purpose, clamp to a range showing visible |
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* video on preview: 100000ns ~ 250000000ns |
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*/ |
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static const long kMinExposureTime = 1000000L; |
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static const long kMaxExposureTime = 250000000L; |
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class AndroidCameraCapture : public IVideoCapture |
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{ |
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int cachedIndex; |
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std::shared_ptr<ACameraManager> cameraManager; |
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std::shared_ptr<ACameraDevice> cameraDevice; |
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std::shared_ptr<AImageReader> imageReader; |
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std::shared_ptr<ACaptureSessionOutputContainer> outputContainer; |
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std::shared_ptr<ACaptureSessionOutput> sessionOutput; |
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std::shared_ptr<ANativeWindow> nativeWindow; |
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std::shared_ptr<ACameraOutputTarget> outputTarget; |
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std::shared_ptr<ACaptureRequest> captureRequest; |
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std::shared_ptr<ACameraCaptureSession> captureSession; |
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CaptureSessionState sessionState = CaptureSessionState::INITIALIZING; |
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int32_t frameWidth = 0; |
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int32_t frameHeight = 0; |
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int32_t colorFormat; |
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std::vector<uint8_t> buffer; |
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bool sessionOutputAdded = false; |
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bool targetAdded = false; |
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// properties
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bool convertToRgb = false; |
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bool settingWidth = false; |
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bool settingHeight = false; |
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int desiredWidth = 640; |
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int desiredHeight = 480; |
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bool autoExposure = true; |
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int64_t exposureTime = 0L; |
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RangeValue<int64_t> exposureRange; |
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int32_t sensitivity = 0; |
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RangeValue<int32_t> sensitivityRange; |
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public: |
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// for synchronization with NDK capture callback
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bool waitingCapture = false; |
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bool captureSuccess = false; |
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std::mutex mtx; |
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std::condition_variable condition; |
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public: |
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AndroidCameraCapture() {} |
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~AndroidCameraCapture() { cleanUp(); } |
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ACameraDevice_stateCallbacks* GetDeviceListener() { |
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static ACameraDevice_stateCallbacks cameraDeviceListener = { |
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.onDisconnected = ::OnDeviceDisconnect, |
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.onError = ::OnDeviceError, |
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}; |
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return &cameraDeviceListener; |
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} |
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ACameraCaptureSession_stateCallbacks sessionListener; |
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ACameraCaptureSession_stateCallbacks* GetSessionListener() { |
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sessionListener = { |
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.context = this, |
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.onClosed = ::OnSessionClosed, |
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.onReady = ::OnSessionReady, |
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.onActive = ::OnSessionActive, |
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}; |
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return &sessionListener; |
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} |
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ACameraCaptureSession_captureCallbacks captureListener; |
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ACameraCaptureSession_captureCallbacks* GetCaptureCallback() { |
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captureListener = { |
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.context = this, |
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.onCaptureStarted = nullptr, |
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.onCaptureProgressed = nullptr, |
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.onCaptureCompleted = ::OnCaptureCompleted, |
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.onCaptureFailed = ::OnCaptureFailed, |
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.onCaptureSequenceCompleted = nullptr, |
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.onCaptureSequenceAborted = nullptr, |
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.onCaptureBufferLost = nullptr, |
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}; |
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return &captureListener; |
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} |
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void setSessionState(CaptureSessionState newSessionState) { |
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this->sessionState = newSessionState; |
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} |
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bool isOpened() const CV_OVERRIDE { return imageReader.get() != nullptr && captureSession.get() != nullptr; } |
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int getCaptureDomain() CV_OVERRIDE { return CAP_ANDROID; } |
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bool grabFrame() CV_OVERRIDE |
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{ |
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AImage* img; |
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{ |
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std::unique_lock<std::mutex> lock(mtx); |
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media_status_t mStatus = AImageReader_acquireLatestImage(imageReader.get(), &img); |
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if (mStatus != AMEDIA_OK) { |
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if (mStatus == AMEDIA_IMGREADER_NO_BUFFER_AVAILABLE) { |
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// this error is not fatal - we just need to wait for a buffer to become available
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LOGW("No Buffer Available error occured - waiting for callback"); |
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waitingCapture = true; |
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captureSuccess = false; |
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bool captured = condition.wait_for(lock, std::chrono::seconds(CAPTURE_TIMEOUT_SECONDS), [this]{ return captureSuccess; }); |
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waitingCapture = false; |
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if (captured) { |
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mStatus = AImageReader_acquireLatestImage(imageReader.get(), &img); |
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if (mStatus != AMEDIA_OK) { |
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LOGE("Acquire image failed with error code: %d", mStatus); |
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return false; |
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} |
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} else { |
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LOGE("Capture failed or callback timed out"); |
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return false; |
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} |
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} else { |
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LOGE("Acquire image failed with error code: %d", mStatus); |
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return false; |
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} |
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} |
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} |
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std::shared_ptr<AImage> image = std::shared_ptr<AImage>(img, deleter_AImage); |
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int32_t srcFormat = -1; |
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AImage_getFormat(image.get(), &srcFormat); |
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if (srcFormat != AIMAGE_FORMAT_YUV_420_888) { |
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LOGE("Incorrect image format"); |
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return false; |
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} |
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int32_t srcPlanes = 0; |
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AImage_getNumberOfPlanes(image.get(), &srcPlanes); |
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if (srcPlanes != 3) { |
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LOGE("Incorrect number of planes in image data"); |
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return false; |
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} |
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int32_t yStride, uvStride; |
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uint8_t *yPixel, *uPixel, *vPixel; |
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int32_t yLen, uLen, vLen; |
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int32_t uvPixelStride; |
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AImage_getPlaneRowStride(image.get(), 0, &yStride); |
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AImage_getPlaneRowStride(image.get(), 1, &uvStride); |
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AImage_getPlaneData(image.get(), 0, &yPixel, &yLen); |
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AImage_getPlaneData(image.get(), 1, &vPixel, &vLen); |
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AImage_getPlaneData(image.get(), 2, &uPixel, &uLen); |
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AImage_getPlanePixelStride(image.get(), 1, &uvPixelStride); |
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if ( (uvPixelStride == 2) && (vPixel == uPixel + 1) && (yLen == frameWidth * frameHeight) && (uLen == ((yLen / 2) - 1)) && (vLen == uLen) ) { |
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colorFormat = COLOR_FormatYUV420SemiPlanar; |
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} else if ( (uvPixelStride == 1) && (vPixel = uPixel + uLen) && (yLen == frameWidth * frameHeight) && (uLen == yLen / 4) && (vLen == uLen) ) { |
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colorFormat = COLOR_FormatYUV420Planar; |
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} else { |
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colorFormat = COLOR_FormatUnknown; |
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LOGE("Unsupported format"); |
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return false; |
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} |
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buffer.clear(); |
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buffer.insert(buffer.end(), yPixel, yPixel + yLen); |
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buffer.insert(buffer.end(), uPixel, uPixel + yLen / 2); |
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return true; |
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} |
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bool retrieveFrame(int, OutputArray out) CV_OVERRIDE |
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{ |
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if (buffer.empty()) { |
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return false; |
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} |
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Mat yuv(frameHeight + frameHeight/2, frameWidth, CV_8UC1, buffer.data()); |
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if (colorFormat == COLOR_FormatYUV420Planar) { |
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cv::cvtColor(yuv, out, convertToRgb ? cv::COLOR_YUV2RGB_YV12 : cv::COLOR_YUV2BGR_YV12); |
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} else if (colorFormat == COLOR_FormatYUV420SemiPlanar) { |
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cv::cvtColor(yuv, out, convertToRgb ? COLOR_YUV2RGB_NV21 : cv::COLOR_YUV2BGR_NV21); |
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} else { |
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LOGE("Unsupported video format: %d", colorFormat); |
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return false; |
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} |
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return true; |
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} |
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double getProperty(int property_id) const CV_OVERRIDE |
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{ |
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switch (property_id) { |
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case CV_CAP_PROP_FRAME_WIDTH: |
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return isOpened() ? frameWidth : desiredWidth; |
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case CV_CAP_PROP_FRAME_HEIGHT: |
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return isOpened() ? frameHeight : desiredHeight; |
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case CV_CAP_PROP_CONVERT_RGB: |
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return convertToRgb ? 1 : 0; |
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case CAP_PROP_AUTO_EXPOSURE: |
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return autoExposure ? 1 : 0; |
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case CV_CAP_PROP_EXPOSURE: |
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return exposureTime; |
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case CV_CAP_PROP_ISO_SPEED: |
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return sensitivity; |
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default: |
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break; |
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} |
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// unknown parameter or value not available
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return -1; |
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} |
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bool setProperty(int property_id, double value) CV_OVERRIDE |
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{ |
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switch (property_id) { |
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case CV_CAP_PROP_FRAME_WIDTH: |
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desiredWidth = value; |
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settingWidth = true; |
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if (settingWidth && settingHeight) { |
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setWidthHeight(); |
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settingWidth = false; |
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settingHeight = false; |
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} |
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return true; |
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case CV_CAP_PROP_FRAME_HEIGHT: |
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desiredHeight = value; |
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settingHeight = true; |
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if (settingWidth && settingHeight) { |
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setWidthHeight(); |
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settingWidth = false; |
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settingHeight = false; |
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} |
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return true; |
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case CV_CAP_PROP_CONVERT_RGB: |
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convertToRgb = (value != 0); |
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return true; |
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case CAP_PROP_AUTO_EXPOSURE: |
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autoExposure = (value != 0); |
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if (isOpened()) { |
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uint8_t aeMode = autoExposure ? ACAMERA_CONTROL_AE_MODE_ON : ACAMERA_CONTROL_AE_MODE_OFF; |
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camera_status_t status = ACaptureRequest_setEntry_u8(captureRequest.get(), ACAMERA_CONTROL_AE_MODE, 1, &aeMode); |
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return status == ACAMERA_OK; |
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} |
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return true; |
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case CV_CAP_PROP_EXPOSURE: |
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if (isOpened() && exposureRange.Supported()) { |
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exposureTime = (int64_t)value; |
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camera_status_t status = ACaptureRequest_setEntry_i64(captureRequest.get(), ACAMERA_SENSOR_EXPOSURE_TIME, 1, &exposureTime); |
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return status == ACAMERA_OK; |
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} |
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break; |
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case CV_CAP_PROP_ISO_SPEED: |
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if (isOpened() && sensitivityRange.Supported()) { |
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sensitivity = (int32_t)value; |
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camera_status_t status = ACaptureRequest_setEntry_i32(captureRequest.get(), ACAMERA_SENSOR_SENSITIVITY, 1, &sensitivity); |
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return status == ACAMERA_OK; |
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} |
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break; |
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default: |
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break; |
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} |
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return false; |
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} |
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void setWidthHeight() { |
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cleanUp(); |
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initCapture(cachedIndex); |
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} |
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// calculate a score based on how well the width and height match the desired width and height
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// basically draw the 2 rectangle on top of each other and take the ratio of the non-overlapping
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// area to the overlapping area
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double getScore(int32_t width, int32_t height) { |
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double area1 = width * height; |
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double area2 = desiredWidth * desiredHeight; |
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if ((width < desiredWidth) == (height < desiredHeight)) { |
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return (width < desiredWidth) ? (area2 - area1)/area1 : (area1 - area2)/area2; |
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} else { |
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int32_t overlappedWidth = std::min(width, desiredWidth); |
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int32_t overlappedHeight = std::min(height, desiredHeight); |
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double overlappedArea = overlappedWidth * overlappedHeight; |
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return (area1 + area2 - overlappedArea)/overlappedArea; |
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} |
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} |
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bool initCapture(int index) |
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{ |
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cachedIndex = index; |
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cameraManager = std::shared_ptr<ACameraManager>(ACameraManager_create(), deleter_ACameraManager); |
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if (!cameraManager) { |
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return false; |
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} |
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ACameraIdList* cameraIds = nullptr; |
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camera_status_t cStatus = ACameraManager_getCameraIdList(cameraManager.get(), &cameraIds); |
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if (cStatus != ACAMERA_OK) { |
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LOGE("Get camera list failed with error code: %d", cStatus); |
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return false; |
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} |
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std::shared_ptr<ACameraIdList> cameraIdList = std::shared_ptr<ACameraIdList>(cameraIds, deleter_ACameraIdList); |
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if (index < 0 || index >= cameraIds->numCameras) { |
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LOGE("Camera index out of range %d (Number of cameras: %d)", index, cameraIds->numCameras); |
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return false; |
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} |
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ACameraDevice* camera = nullptr; |
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cStatus = ACameraManager_openCamera(cameraManager.get(), cameraIdList.get()->cameraIds[index], GetDeviceListener(), &camera); |
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if (cStatus != ACAMERA_OK) { |
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LOGE("Open camera failed with error code: %d", cStatus); |
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return false; |
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} |
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cameraDevice = std::shared_ptr<ACameraDevice>(camera, deleter_ACameraDevice); |
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ACameraMetadata* metadata; |
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cStatus = ACameraManager_getCameraCharacteristics(cameraManager.get(), cameraIdList.get()->cameraIds[index], &metadata); |
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if (cStatus != ACAMERA_OK) { |
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LOGE("Get camera characteristics failed with error code: %d", cStatus); |
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return false; |
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} |
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std::shared_ptr<ACameraMetadata> cameraMetadata = std::shared_ptr<ACameraMetadata>(metadata, deleter_ACameraMetadata); |
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ACameraMetadata_const_entry entry; |
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ACameraMetadata_getConstEntry(cameraMetadata.get(), ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, &entry); |
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double bestScore = std::numeric_limits<double>::max(); |
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int32_t bestMatchWidth = 0; |
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int32_t bestMatchHeight = 0; |
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for (uint32_t i = 0; i < entry.count; i += 4) { |
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int32_t input = entry.data.i32[i + 3]; |
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int32_t format = entry.data.i32[i + 0]; |
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if (input) { |
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continue; |
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} |
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if (format == AIMAGE_FORMAT_YUV_420_888) { |
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int32_t width = entry.data.i32[i + 1]; |
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int32_t height = entry.data.i32[i + 2]; |
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if (width == desiredWidth && height == desiredHeight) { |
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bestMatchWidth = width; |
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bestMatchHeight = height; |
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bestScore = 0; |
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break; |
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} else { |
||||
double score = getScore(width, height); |
||||
if (score < bestScore) { |
||||
bestMatchWidth = width; |
||||
bestMatchHeight = height; |
||||
bestScore = score; |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
ACameraMetadata_const_entry val = { 0, }; |
||||
camera_status_t status = ACameraMetadata_getConstEntry(cameraMetadata.get(), ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE, &val); |
||||
if (status == ACAMERA_OK) { |
||||
exposureRange.min = val.data.i64[0]; |
||||
if (exposureRange.min < kMinExposureTime) { |
||||
exposureRange.min = kMinExposureTime; |
||||
} |
||||
exposureRange.max = val.data.i64[1]; |
||||
if (exposureRange.max > kMaxExposureTime) { |
||||
exposureRange.max = kMaxExposureTime; |
||||
} |
||||
exposureTime = exposureRange.value(2); |
||||
} else { |
||||
LOGW("Unsupported ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE"); |
||||
exposureRange.min = exposureRange.max = 0l; |
||||
exposureTime = 0l; |
||||
} |
||||
status = ACameraMetadata_getConstEntry(cameraMetadata.get(), ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE, &val); |
||||
if (status == ACAMERA_OK){ |
||||
sensitivityRange.min = val.data.i32[0]; |
||||
sensitivityRange.max = val.data.i32[1]; |
||||
sensitivity = sensitivityRange.value(2); |
||||
} else { |
||||
LOGW("Unsupported ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE"); |
||||
sensitivityRange.min = sensitivityRange.max = 0; |
||||
sensitivity = 0; |
||||
} |
||||
|
||||
AImageReader* reader; |
||||
media_status_t mStatus = AImageReader_new(bestMatchWidth, bestMatchHeight, AIMAGE_FORMAT_YUV_420_888, MAX_BUF_COUNT, &reader); |
||||
if (mStatus != AMEDIA_OK) { |
||||
LOGE("ImageReader creation failed with error code: %d", mStatus); |
||||
return false; |
||||
} |
||||
frameWidth = bestMatchWidth; |
||||
frameHeight = bestMatchHeight; |
||||
imageReader = std::shared_ptr<AImageReader>(reader, deleter_AImageReader); |
||||
|
||||
ANativeWindow *window; |
||||
mStatus = AImageReader_getWindow(imageReader.get(), &window); |
||||
if (mStatus != AMEDIA_OK) { |
||||
LOGE("Could not get ANativeWindow: %d", mStatus); |
||||
return false; |
||||
} |
||||
nativeWindow = std::shared_ptr<ANativeWindow>(window, deleter_ANativeWindow); |
||||
|
||||
ACaptureSessionOutputContainer* container; |
||||
cStatus = ACaptureSessionOutputContainer_create(&container); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CaptureSessionOutputContainer creation failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
outputContainer = std::shared_ptr<ACaptureSessionOutputContainer>(container, deleter_ACaptureSessionOutputContainer); |
||||
|
||||
ANativeWindow_acquire(nativeWindow.get()); |
||||
ACaptureSessionOutput* output; |
||||
cStatus = ACaptureSessionOutput_create(nativeWindow.get(), &output); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CaptureSessionOutput creation failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
sessionOutput = std::shared_ptr<ACaptureSessionOutput>(output, deleter_ACaptureSessionOutput); |
||||
ACaptureSessionOutputContainer_add(outputContainer.get(), sessionOutput.get()); |
||||
sessionOutputAdded = true; |
||||
|
||||
ACameraOutputTarget* target; |
||||
cStatus = ACameraOutputTarget_create(nativeWindow.get(), &target); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CameraOutputTarget creation failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
outputTarget = std::shared_ptr<ACameraOutputTarget>(target, deleter_ACameraOutputTarget); |
||||
|
||||
ACaptureRequest * request; |
||||
cStatus = ACameraDevice_createCaptureRequest(cameraDevice.get(), TEMPLATE_PREVIEW, &request); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CaptureRequest creation failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
captureRequest = std::shared_ptr<ACaptureRequest>(request, deleter_ACaptureRequest); |
||||
|
||||
cStatus = ACaptureRequest_addTarget(captureRequest.get(), outputTarget.get()); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("Add target to CaptureRequest failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
targetAdded = true; |
||||
|
||||
ACameraCaptureSession *session; |
||||
cStatus = ACameraDevice_createCaptureSession(cameraDevice.get(), outputContainer.get(), GetSessionListener(), &session); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CaptureSession creation failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
captureSession = std::shared_ptr<ACameraCaptureSession>(session, deleter_ACameraCaptureSession); |
||||
uint8_t aeMode = autoExposure ? ACAMERA_CONTROL_AE_MODE_ON : ACAMERA_CONTROL_AE_MODE_OFF; |
||||
ACaptureRequest_setEntry_u8(captureRequest.get(), ACAMERA_CONTROL_AE_MODE, 1, &aeMode); |
||||
ACaptureRequest_setEntry_i32(captureRequest.get(), ACAMERA_SENSOR_SENSITIVITY, 1, &sensitivity); |
||||
if (!autoExposure) { |
||||
ACaptureRequest_setEntry_i64(captureRequest.get(), ACAMERA_SENSOR_EXPOSURE_TIME, 1, &exposureTime); |
||||
} |
||||
|
||||
cStatus = ACameraCaptureSession_setRepeatingRequest(captureSession.get(), GetCaptureCallback(), 1, &request, nullptr); |
||||
if (cStatus != ACAMERA_OK) { |
||||
LOGE("CameraCaptureSession set repeating request failed with error code: %d", cStatus); |
||||
return false; |
||||
} |
||||
return true; |
||||
} |
||||
|
||||
void cleanUp() { |
||||
captureListener.context = nullptr; |
||||
sessionListener.context = nullptr; |
||||
if (sessionState == CaptureSessionState::ACTIVE) { |
||||
ACameraCaptureSession_stopRepeating(captureSession.get()); |
||||
} |
||||
captureSession = nullptr; |
||||
if (targetAdded) { |
||||
ACaptureRequest_removeTarget(captureRequest.get(), outputTarget.get()); |
||||
targetAdded = false; |
||||
} |
||||
captureRequest = nullptr; |
||||
outputTarget = nullptr; |
||||
if (sessionOutputAdded) { |
||||
ACaptureSessionOutputContainer_remove(outputContainer.get(), sessionOutput.get()); |
||||
sessionOutputAdded = false; |
||||
} |
||||
sessionOutput = nullptr; |
||||
nativeWindow = nullptr; |
||||
outputContainer = nullptr; |
||||
cameraDevice = nullptr; |
||||
cameraManager = nullptr; |
||||
imageReader = nullptr; |
||||
} |
||||
}; |
||||
|
||||
/******************************** Session management *******************************/ |
||||
|
||||
void OnSessionClosed(void* context, ACameraCaptureSession* session) { |
||||
if (context == nullptr) return; |
||||
LOGW("session %p closed", session); |
||||
reinterpret_cast<AndroidCameraCapture*>(context)->setSessionState(CaptureSessionState::CLOSED); |
||||
} |
||||
|
||||
void OnSessionReady(void* context, ACameraCaptureSession* session) { |
||||
if (context == nullptr) return; |
||||
LOGW("session %p ready", session); |
||||
reinterpret_cast<AndroidCameraCapture*>(context)->setSessionState(CaptureSessionState::READY); |
||||
} |
||||
|
||||
void OnSessionActive(void* context, ACameraCaptureSession* session) { |
||||
if (context == nullptr) return; |
||||
LOGW("session %p active", session); |
||||
reinterpret_cast<AndroidCameraCapture*>(context)->setSessionState(CaptureSessionState::ACTIVE); |
||||
} |
||||
|
||||
void OnCaptureCompleted(void* context, |
||||
ACameraCaptureSession* session, |
||||
ACaptureRequest* /* request */, |
||||
const ACameraMetadata* /* result */) { |
||||
if (context == nullptr) return; |
||||
LOGV("session %p capture completed", session); |
||||
AndroidCameraCapture* cameraCapture = reinterpret_cast<AndroidCameraCapture*>(context); |
||||
std::unique_lock<std::mutex> lock(cameraCapture->mtx); |
||||
|
||||
if (cameraCapture->waitingCapture) { |
||||
cameraCapture->waitingCapture = false; |
||||
cameraCapture->captureSuccess = true; |
||||
cameraCapture->condition.notify_one(); |
||||
} |
||||
} |
||||
|
||||
void OnCaptureFailed(void* context, |
||||
ACameraCaptureSession* session, |
||||
ACaptureRequest* /* request */, |
||||
ACameraCaptureFailure* /* failure */) { |
||||
if (context == nullptr) return; |
||||
LOGV("session %p capture failed", session); |
||||
AndroidCameraCapture* cameraCapture = reinterpret_cast<AndroidCameraCapture*>(context); |
||||
std::unique_lock<std::mutex> lock(cameraCapture->mtx); |
||||
|
||||
if (cameraCapture->waitingCapture) { |
||||
cameraCapture->waitingCapture = false; |
||||
cameraCapture->captureSuccess = false; |
||||
cameraCapture->condition.notify_one(); |
||||
} |
||||
} |
||||
|
||||
/****************** Implementation of interface functions ********************/ |
||||
|
||||
Ptr<IVideoCapture> cv::createAndroidCapture_cam( int index ) { |
||||
Ptr<AndroidCameraCapture> res = makePtr<AndroidCameraCapture>(); |
||||
if (res && res->initCapture(index)) |
||||
return res; |
||||
return Ptr<IVideoCapture>(); |
||||
} |
||||
@ -0,0 +1,6 @@ |
||||
ABIs = [ |
||||
ABI("2", "armeabi-v7a", None, 24, cmake_vars=dict(ANDROID_ABI='armeabi-v7a with NEON')), |
||||
ABI("3", "arm64-v8a", None, 24), |
||||
ABI("5", "x86_64", None, 24), |
||||
ABI("4", "x86", None, 24), |
||||
] |
||||
Loading…
Reference in new issue