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| ** This file is part of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ****************************************************************************/ |
| |
| #include <QtMultimedia/private/qtmultimediaglobal_p.h> |
| #include "camerabincontrol.h" |
| #include "camerabincontainer.h" |
| #include "camerabinaudioencoder.h" |
| #include "camerabinvideoencoder.h" |
| #include "camerabinimageencoder.h" |
| #include "camerabinresourcepolicy.h" |
| |
| #include <QtCore/qdebug.h> |
| #include <QtCore/qfile.h> |
| #include <QtCore/qmetaobject.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| //#define CAMEABIN_DEBUG 1 |
| #define ENUM_NAME(c,e,v) (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(e)).valueToKey((v))) |
| |
| CameraBinControl::CameraBinControl(CameraBinSession *session) |
| :QCameraControl(session), |
| m_session(session), |
| m_state(QCamera::UnloadedState), |
| m_reloadPending(false) |
| { |
| connect(m_session, SIGNAL(statusChanged(QCamera::Status)), |
| this, SIGNAL(statusChanged(QCamera::Status))); |
| |
| connect(m_session, SIGNAL(viewfinderChanged()), |
| SLOT(reloadLater())); |
| connect(m_session, SIGNAL(readyChanged(bool)), |
| SLOT(reloadLater())); |
| connect(m_session, SIGNAL(error(int,QString)), |
| SLOT(handleCameraError(int,QString))); |
| |
| m_resourcePolicy = new CamerabinResourcePolicy(this); |
| connect(m_resourcePolicy, SIGNAL(resourcesGranted()), |
| SLOT(handleResourcesGranted())); |
| connect(m_resourcePolicy, SIGNAL(resourcesDenied()), |
| SLOT(handleResourcesLost())); |
| connect(m_resourcePolicy, SIGNAL(resourcesLost()), |
| SLOT(handleResourcesLost())); |
| |
| connect(m_session, SIGNAL(busyChanged(bool)), |
| SLOT(handleBusyChanged(bool))); |
| } |
| |
| CameraBinControl::~CameraBinControl() |
| { |
| } |
| |
| QCamera::CaptureModes CameraBinControl::captureMode() const |
| { |
| return m_session->captureMode(); |
| } |
| |
| void CameraBinControl::setCaptureMode(QCamera::CaptureModes mode) |
| { |
| if (m_session->captureMode() != mode) { |
| m_session->setCaptureMode(mode); |
| |
| if (m_state == QCamera::ActiveState) { |
| m_resourcePolicy->setResourceSet( |
| captureMode() == QCamera::CaptureStillImage ? |
| CamerabinResourcePolicy::ImageCaptureResources : |
| CamerabinResourcePolicy::VideoCaptureResources); |
| } |
| emit captureModeChanged(mode); |
| } |
| } |
| |
| bool CameraBinControl::isCaptureModeSupported(QCamera::CaptureModes mode) const |
| { |
| return mode == QCamera::CaptureStillImage || mode == QCamera::CaptureVideo; |
| } |
| |
| void CameraBinControl::setState(QCamera::State state) |
| { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << Q_FUNC_INFO << ENUM_NAME(QCamera, "State", state); |
| #endif |
| if (m_state != state) { |
| m_state = state; |
| |
| //special case for stopping the camera while it's busy, |
| //it should be delayed until the camera is idle |
| if ((state == QCamera::LoadedState || state == QCamera::UnloadedState) && |
| m_session->status() == QCamera::ActiveStatus && |
| m_session->isBusy()) { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << Q_FUNC_INFO << "Camera is busy, QCamera::stop() is delayed"; |
| #endif |
| emit stateChanged(m_state); |
| return; |
| } |
| |
| CamerabinResourcePolicy::ResourceSet resourceSet = CamerabinResourcePolicy::NoResources; |
| switch (state) { |
| case QCamera::UnloadedState: |
| resourceSet = CamerabinResourcePolicy::NoResources; |
| break; |
| case QCamera::LoadedState: |
| resourceSet = CamerabinResourcePolicy::LoadedResources; |
| break; |
| case QCamera::ActiveState: |
| resourceSet = captureMode() == QCamera::CaptureStillImage ? |
| CamerabinResourcePolicy::ImageCaptureResources : |
| CamerabinResourcePolicy::VideoCaptureResources; |
| break; |
| } |
| |
| m_resourcePolicy->setResourceSet(resourceSet); |
| |
| if (m_resourcePolicy->isResourcesGranted()) { |
| //postpone changing to Active if the session is nor ready yet |
| if (state == QCamera::ActiveState) { |
| if (m_session->isReady()) { |
| m_session->setState(state); |
| } else { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << "Camera session is not ready yet, postpone activating"; |
| #endif |
| } |
| } else |
| m_session->setState(state); |
| } |
| |
| emit stateChanged(m_state); |
| } |
| } |
| |
| QCamera::State CameraBinControl::state() const |
| { |
| return m_state; |
| } |
| |
| QCamera::Status CameraBinControl::status() const |
| { |
| return m_session->status(); |
| } |
| |
| void CameraBinControl::reloadLater() |
| { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << "CameraBinControl: reload pipeline requested" << ENUM_NAME(QCamera, "State", m_state); |
| #endif |
| if (!m_reloadPending && m_state == QCamera::ActiveState) { |
| m_reloadPending = true; |
| |
| if (!m_session->isBusy()) { |
| m_session->setState(QCamera::LoadedState); |
| QMetaObject::invokeMethod(this, "delayedReload", Qt::QueuedConnection); |
| } |
| } |
| } |
| |
| void CameraBinControl::handleResourcesLost() |
| { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << Q_FUNC_INFO << ENUM_NAME(QCamera, "State", m_state); |
| #endif |
| m_session->setState(QCamera::UnloadedState); |
| } |
| |
| void CameraBinControl::handleResourcesGranted() |
| { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << Q_FUNC_INFO << ENUM_NAME(QCamera, "State", m_state); |
| #endif |
| |
| //camera will be started soon by delayedReload() |
| if (m_reloadPending && m_state == QCamera::ActiveState) |
| return; |
| |
| if (m_state == QCamera::ActiveState && m_session->isReady()) |
| m_session->setState(QCamera::ActiveState); |
| else if (m_state == QCamera::LoadedState) |
| m_session->setState(QCamera::LoadedState); |
| } |
| |
| void CameraBinControl::handleBusyChanged(bool busy) |
| { |
| if (!busy && m_session->status() == QCamera::ActiveStatus) { |
| if (m_state == QCamera::LoadedState) { |
| //handle delayed stop() because of busy camera |
| m_resourcePolicy->setResourceSet(CamerabinResourcePolicy::LoadedResources); |
| m_session->setState(QCamera::LoadedState); |
| } else if (m_state == QCamera::ActiveState && m_reloadPending) { |
| //handle delayed reload because of busy camera |
| m_session->setState(QCamera::LoadedState); |
| QMetaObject::invokeMethod(this, "delayedReload", Qt::QueuedConnection); |
| } |
| } |
| } |
| |
| void CameraBinControl::handleCameraError(int errorCode, const QString &errorString) |
| { |
| emit error(errorCode, errorString); |
| setState(QCamera::UnloadedState); |
| } |
| |
| void CameraBinControl::delayedReload() |
| { |
| #ifdef CAMEABIN_DEBUG |
| qDebug() << "CameraBinControl: reload pipeline"; |
| #endif |
| if (m_reloadPending) { |
| m_reloadPending = false; |
| if (m_state == QCamera::ActiveState && |
| m_session->isReady() && |
| m_resourcePolicy->isResourcesGranted()) { |
| m_session->setState(QCamera::ActiveState); |
| } |
| } |
| } |
| |
| bool CameraBinControl::canChangeProperty(PropertyChangeType changeType, QCamera::Status status) const |
| { |
| Q_UNUSED(status); |
| |
| switch (changeType) { |
| case QCameraControl::Viewfinder: |
| return true; |
| case QCameraControl::CaptureMode: |
| case QCameraControl::ImageEncodingSettings: |
| case QCameraControl::VideoEncodingSettings: |
| case QCameraControl::ViewfinderSettings: |
| default: |
| return status != QCamera::ActiveStatus; |
| } |
| } |
| |
| #define VIEWFINDER_COLORSPACE_CONVERSION 0x00000004 |
| |
| bool CameraBinControl::viewfinderColorSpaceConversion() const |
| { |
| gint flags = 0; |
| g_object_get(G_OBJECT(m_session->cameraBin()), "flags", &flags, NULL); |
| |
| return flags & VIEWFINDER_COLORSPACE_CONVERSION; |
| } |
| |
| void CameraBinControl::setViewfinderColorSpaceConversion(bool enabled) |
| { |
| gint flags = 0; |
| g_object_get(G_OBJECT(m_session->cameraBin()), "flags", &flags, NULL); |
| |
| if (enabled) |
| flags |= VIEWFINDER_COLORSPACE_CONVERSION; |
| else |
| flags &= ~VIEWFINDER_COLORSPACE_CONVERSION; |
| |
| g_object_set(G_OBJECT(m_session->cameraBin()), "flags", flags, NULL); |
| } |
| |
| QT_END_NAMESPACE |
