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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2016 Ruslan Baratov
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef ANDROIDCAMERA_H
#define ANDROIDCAMERA_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qobject.h>
#include <qsize.h>
#include <qrect.h>
#include <QtMultimedia/qcamera.h>
#include <QtCore/qjniobject.h>
#include <private/qcameradevice_p.h>
QT_BEGIN_NAMESPACE
class QThread;
class AndroidCameraPrivate;
class AndroidSurfaceTexture;
class AndroidSurfaceHolder;
class AndroidCamera : public QObject
{
Q_OBJECT
public:
enum CameraFacing {
CameraFacingBack = 0,
CameraFacingFront = 1
};
Q_ENUM(CameraFacing)
enum ImageFormat { // same values as in android.graphics.ImageFormat Java class
UnknownImageFormat = 0,
RGB565 = 4,
NV16 = 16,
NV21 = 17,
YUY2 = 20,
JPEG = 256,
YV12 = 842094169
};
Q_ENUM(ImageFormat)
// http://developer.android.com/reference/android/hardware/Camera.Parameters.html#getSupportedPreviewFpsRange%28%29
// "The values are multiplied by 1000 and represented in integers"
struct FpsRange {
int min;
int max;
FpsRange(): min(0), max(0) {}
qreal getMinReal() const { return min / 1000.0; }
qreal getMaxReal() const { return max / 1000.0; }
static FpsRange makeFromQReal(qreal min, qreal max)
{
FpsRange range;
range.min = static_cast<int>(min * 1000.0);
range.max = static_cast<int>(max * 1000.0);
return range;
}
};
~AndroidCamera();
static AndroidCamera *open(int cameraId);
int cameraId() const;
bool lock();
bool unlock();
bool reconnect();
void release();
CameraFacing getFacing();
int getNativeOrientation();
QSize getPreferredPreviewSizeForVideo();
QList<QSize> getSupportedPreviewSizes();
QList<FpsRange> getSupportedPreviewFpsRange();
FpsRange getPreviewFpsRange();
void setPreviewFpsRange(FpsRange);
ImageFormat getPreviewFormat();
void setPreviewFormat(ImageFormat fmt);
QList<ImageFormat> getSupportedPreviewFormats();
QSize previewSize() const;
QSize actualPreviewSize();
void setPreviewSize(const QSize &size);
bool setPreviewTexture(AndroidSurfaceTexture *surfaceTexture);
bool setPreviewDisplay(AndroidSurfaceHolder *surfaceHolder);
void setDisplayOrientation(int degrees);
bool isZoomSupported();
int getMaxZoom();
QList<int> getZoomRatios();
int getZoom();
void setZoom(int value);
QStringList getSupportedFlashModes();
QString getFlashMode();
void setFlashMode(const QString &value);
QStringList getSupportedFocusModes();
QString getFocusMode();
void setFocusMode(const QString &value);
int getMaxNumFocusAreas();
QList<QRect> getFocusAreas();
void setFocusAreas(const QList<QRect> &areas);
void autoFocus();
void cancelAutoFocus();
bool isAutoExposureLockSupported();
bool getAutoExposureLock();
void setAutoExposureLock(bool toggle);
bool isAutoWhiteBalanceLockSupported();
bool getAutoWhiteBalanceLock();
void setAutoWhiteBalanceLock(bool toggle);
int getExposureCompensation();
void setExposureCompensation(int value);
float getExposureCompensationStep();
int getMinExposureCompensation();
int getMaxExposureCompensation();
QStringList getSupportedSceneModes();
QString getSceneMode();
void setSceneMode(const QString &value);
QStringList getSupportedWhiteBalance();
QString getWhiteBalance();
void setWhiteBalance(const QString &value);
void setRotation(int rotation);
int getRotation() const;
QList<QCameraFormat> getSupportedFormats();
QList<QSize> getSupportedPictureSizes();
QList<QSize> getSupportedVideoSizes();
void setPictureSize(const QSize &size);
void setJpegQuality(int quality);
void startPreview();
void stopPreview();
void stopPreviewSynchronous();
void takePicture();
void setupPreviewFrameCallback();
void notifyNewFrames(bool notify);
void fetchLastPreviewFrame();
QJniObject getCameraObject();
QJniObject getParametersObject();
static int getNumberOfCameras();
static void getCameraInfo(int id, QCameraDevicePrivate *info);
static QVideoFrameFormat::PixelFormat QtPixelFormatFromAndroidImageFormat(AndroidCamera::ImageFormat);
static AndroidCamera::ImageFormat AndroidImageFormatFromQtPixelFormat(QVideoFrameFormat::PixelFormat);
static bool requestCameraPermission();
static bool registerNativeMethods();
Q_SIGNALS:
void previewSizeChanged();
void previewStarted();
void previewFailedToStart();
void previewStopped();
void autoFocusStarted();
void autoFocusComplete(bool success);
void whiteBalanceChanged();
void takePictureFailed();
void pictureExposed();
void pictureCaptured(const QByteArray &frame, QVideoFrameFormat::PixelFormat format, QSize size, int bytesPerLine);
void lastPreviewFrameFetched(const QVideoFrame &frame);
void newPreviewFrame(const QVideoFrame &frame);
private:
AndroidCamera(AndroidCameraPrivate *d, QThread *worker);
Q_DECLARE_PRIVATE(AndroidCamera)
AndroidCameraPrivate *d_ptr;
QScopedPointer<QThread> m_worker;
};
QT_END_NAMESPACE
Q_DECLARE_METATYPE(AndroidCamera::ImageFormat)
#endif // ANDROIDCAMERA_H
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