Video::PreviewManager::PreviewManager() : QObject(&VideoRendererManager::instance())
{
connect(&VideoRendererManager::instance(), &VideoRendererManager::previewStateChanged, [this](bool startStop) {
emit previewStateChanged(startStop);
});
connect(&VideoRendererManager::instance(), &VideoRendererManager::previewStarted , [this](Video::Renderer* renderer) {
emit previewStarted(renderer);
});
connect(&VideoRendererManager::instance(), &VideoRendererManager::previewStopped , [this](Video::Renderer* renderer) {
emit previewStopped(renderer);
});
}
void AndroidCameraPrivate::startPreview()
{
//We need to clear preview buffers queue here, but there is no method to do it
//Though just resetting preview callback do the trick
m_camera.callMethod<void>("setPreviewCallbackWithBuffer",
"(Landroid/hardware/Camera$PreviewCallback;)V",
jobject(0));
m_cameraListener.callMethod<void>("preparePreviewBuffer", "(Landroid/hardware/Camera;)V", m_camera.object());
QJNIObjectPrivate buffer = m_cameraListener.callObjectMethod<jbyteArray>("callbackBuffer");
m_camera.callMethod<void>("addCallbackBuffer", "([B)V", buffer.object());
m_camera.callMethod<void>("setPreviewCallbackWithBuffer",
"(Landroid/hardware/Camera$PreviewCallback;)V",
m_cameraListener.object());
m_camera.callMethod<void>("startPreview");
emit previewStarted();
}
bool QAndroidCameraSession::open()
{
close();
m_status = QCamera::LoadingStatus;
emit statusChanged(m_status);
m_camera = AndroidCamera::open(m_selectedCamera);
if (m_camera) {
connect(m_camera, SIGNAL(pictureExposed()), this, SLOT(onCameraPictureExposed()));
connect(m_camera, SIGNAL(lastPreviewFrameFetched(QVideoFrame)),
this, SLOT(onLastPreviewFrameFetched(QVideoFrame)),
Qt::DirectConnection);
connect(m_camera, SIGNAL(newPreviewFrame(QVideoFrame)),
this, SLOT(onNewPreviewFrame(QVideoFrame)),
Qt::DirectConnection);
connect(m_camera, SIGNAL(pictureCaptured(QByteArray)), this, SLOT(onCameraPictureCaptured(QByteArray)));
connect(m_camera, SIGNAL(previewStarted()), this, SLOT(onCameraPreviewStarted()));
connect(m_camera, SIGNAL(previewStopped()), this, SLOT(onCameraPreviewStopped()));
connect(m_camera, &AndroidCamera::previewFailedToStart, this, &QAndroidCameraSession::onCameraPreviewFailedToStart);
connect(m_camera, &AndroidCamera::takePictureFailed, this, &QAndroidCameraSession::onCameraTakePictureFailed);
m_nativeOrientation = m_camera->getNativeOrientation();
m_status = QCamera::LoadedStatus;
if (m_camera->getPreviewFormat() != AndroidCamera::NV21)
m_camera->setPreviewFormat(AndroidCamera::NV21);
m_camera->notifyNewFrames(m_videoProbes.count() || m_previewCallback);
emit opened();
} else {
m_status = QCamera::UnavailableStatus;
}
emit statusChanged(m_status);
return m_camera != 0;
}
