diff options
Diffstat (limited to 'src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp')
| -rw-r--r-- | src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp b/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp deleted file mode 100644 index 874361e..0000000 --- a/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp +++ /dev/null @@ -1,339 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "camerabinimagecapture.h" -#include "camerabincapturedestination.h" -#include "camerabincapturebufferformat.h" -#include "camerabinsession.h" -#include <private/qgstvideobuffer_p.h> -#include <private/qvideosurfacegstsink_p.h> -#include <private/qgstutils_p.h> -#include <QtCore/qdebug.h> -#include <QtCore/qbuffer.h> -#include <QtGui/qimagereader.h> - -//#define DEBUG_CAPTURE - -#define IMAGE_DONE_SIGNAL "image-done" - -Q_DECLARE_METATYPE(QVideoFrame) -Q_DECLARE_METATYPE(QtMultimedia::MetaData) - -namespace -{ -class CameraRegisterMetaTypes -{ -public: - CameraRegisterMetaTypes() - { - qRegisterMetaType<QVideoFrame>("QVideoFrame"); - qRegisterMetaType<QtMultimedia::MetaData>("QtMultimedia::MetaData"); - } -} _registerCameraMetaTypes; -} - - -CameraBinImageCapture::CameraBinImageCapture(CameraBinSession *session) - :QCameraImageCaptureControl(session) - , m_session(session) - , m_ready(false) - , m_requestId(0) - , m_jpegEncoderElement(0) - , m_metadataMuxerElement(0) -{ - connect(m_session, SIGNAL(stateChanged(QCamera::State)), SLOT(updateState())); - connect(m_session, SIGNAL(imageExposed(int)), this, SIGNAL(imageExposed(int))); - connect(m_session, SIGNAL(imageCaptured(int,QImage)), this, SIGNAL(imageCaptured(int,QImage))); - - m_session->bus()->installMessageFilter(this); -} - -CameraBinImageCapture::~CameraBinImageCapture() -{ -} - -bool CameraBinImageCapture::isReadyForCapture() const -{ - return m_ready; -} - -int CameraBinImageCapture::capture(const QString &fileName) -{ - m_requestId++; - - if (!m_ready) { - emit error(m_requestId, QCameraImageCapture::NotReadyError, tr("Camera not ready")); - return m_requestId; - } - -#ifdef DEBUG_CAPTURE - qDebug() << Q_FUNC_INFO << m_requestId << fileName; -#endif - m_session->captureImage(m_requestId, fileName); - return m_requestId; -} - -void CameraBinImageCapture::cancelCapture() -{ -} - -void CameraBinImageCapture::updateState() -{ - bool ready = m_session->state() == QCamera::ActiveState; - if (m_ready != ready) { -#ifdef DEBUG_CAPTURE - qDebug() << "readyForCaptureChanged" << ready; -#endif - emit readyForCaptureChanged(m_ready = ready); - } -} - -gboolean CameraBinImageCapture::metadataEventProbe(GstPad *pad, GstEvent *event, CameraBinImageCapture *self) -{ - Q_UNUSED(pad); - - if (GST_EVENT_TYPE(event) == GST_EVENT_TAG) { - GstTagList *gstTags; - gst_event_parse_tag(event, &gstTags); - QMap<QByteArray, QVariant> extendedTags = QGstUtils::gstTagListToMap(gstTags); - -#ifdef DEBUG_CAPTURE - qDebug() << QString(gst_structure_to_string(gst_event_get_structure(event))).right(768); - qDebug() << "Capture event probe" << extendedTags; -#endif - - QMap<QtMultimedia::MetaData, QVariant> tags; - tags[QtMultimedia::ISOSpeedRatings] = extendedTags.value("capturing-iso-speed"); - tags[QtMultimedia::DigitalZoomRatio] = extendedTags.value("capturing-digital-zoom-ratio"); - tags[QtMultimedia::ExposureTime] = extendedTags.value("capturing-shutter-speed"); - tags[QtMultimedia::WhiteBalance] = extendedTags.value("capturing-white-balance"); - tags[QtMultimedia::Flash] = extendedTags.value("capturing-flash-fired"); - tags[QtMultimedia::FocalLengthIn35mmFilm] = extendedTags.value("capturing-focal-length"); - tags[QtMultimedia::MeteringMode] = extendedTags.value("capturing-metering-mode"); - tags[QtMultimedia::ExposureMode] = extendedTags.value("capturing-exposure-mode"); - tags[QtMultimedia::FNumber] = extendedTags.value("capturing-focal-ratio"); - tags[QtMultimedia::ExposureMode] = extendedTags.value("capturing-exposure-mode"); - - QMapIterator<QtMultimedia::MetaData, QVariant> i(tags); - while (i.hasNext()) { - i.next(); - if (i.value().isValid()) { - QMetaObject::invokeMethod(self, "imageMetadataAvailable", - Qt::QueuedConnection, - Q_ARG(int, self->m_requestId), - Q_ARG(QtMultimedia::MetaData, i.key()), - Q_ARG(QVariant, i.value())); - } - } - } - - return true; -} - -gboolean CameraBinImageCapture::uncompressedBufferProbe(GstPad *pad, GstBuffer *buffer, CameraBinImageCapture *self) -{ - Q_UNUSED(pad); - CameraBinSession *session = self->m_session; - -#ifdef DEBUG_CAPTURE - qDebug() << "Uncompressed buffer probe" << gst_caps_to_string(GST_BUFFER_CAPS(buffer)); -#endif - - QCameraImageCapture::CaptureDestinations destination = - session->captureDestinationControl()->captureDestination(); - QVideoFrame::PixelFormat format = session->captureBufferFormatControl()->bufferFormat(); - - if (destination & QCameraImageCapture::CaptureToBuffer) { - if (format != QVideoFrame::Format_Jpeg) { - GstCaps *caps = GST_BUFFER_CAPS(buffer); - int bytesPerLine = -1; - QVideoSurfaceFormat format = QVideoSurfaceGstSink::formatForCaps(caps, &bytesPerLine); -#ifdef DEBUG_CAPTURE - qDebug() << "imageAvailable(uncompressed):" << format; -#endif - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, bytesPerLine); - - QVideoFrame frame(videoBuffer, - format.frameSize(), - format.pixelFormat()); - - QMetaObject::invokeMethod(self, "imageAvailable", - Qt::QueuedConnection, - Q_ARG(int, self->m_requestId), - Q_ARG(QVideoFrame, frame)); - } - } - - //keep the buffer if capture to file or jpeg buffer capture was reuqsted - bool keepBuffer = (destination & QCameraImageCapture::CaptureToFile) || - ((destination & QCameraImageCapture::CaptureToBuffer) && - format == QVideoFrame::Format_Jpeg); - - return keepBuffer; -} - -gboolean CameraBinImageCapture::jpegBufferProbe(GstPad *pad, GstBuffer *buffer, CameraBinImageCapture *self) -{ - Q_UNUSED(pad); - CameraBinSession *session = self->m_session; - -#ifdef DEBUG_CAPTURE - qDebug() << "Jpeg buffer probe" << gst_caps_to_string(GST_BUFFER_CAPS(buffer)); -#endif - - QCameraImageCapture::CaptureDestinations destination = - session->captureDestinationControl()->captureDestination(); - - if ((destination & QCameraImageCapture::CaptureToBuffer) && - session->captureBufferFormatControl()->bufferFormat() == QVideoFrame::Format_Jpeg) { - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, - -1); //bytesPerLine is not available for jpegs - - QSize resolution = QGstUtils::capsCorrectedResolution(GST_BUFFER_CAPS(buffer)); - //if resolution is not presented in caps, try to find it from encoded jpeg data: - if (resolution.isEmpty()) { - QBuffer data; - data.setData(reinterpret_cast<const char*>(GST_BUFFER_DATA(buffer)), GST_BUFFER_SIZE(buffer)); - QImageReader reader(&data, "JPEG"); - resolution = reader.size(); - } - - QVideoFrame frame(videoBuffer, - resolution, - QVideoFrame::Format_Jpeg); - - QMetaObject::invokeMethod(self, "imageAvailable", - Qt::QueuedConnection, - Q_ARG(int, self->m_requestId), - Q_ARG(QVideoFrame, frame)); - } - - //drop the buffer if capture to file was disabled - return destination & QCameraImageCapture::CaptureToFile; -} - -bool CameraBinImageCapture::processBusMessage(const QGstreamerMessage &message) -{ - //Install metadata event and buffer probes - - //The image capture pipiline is built dynamically, - //it's necessary to wait until jpeg encoder is added to pipeline - - GstMessage *gm = message.rawMessage(); - if (GST_MESSAGE_TYPE(gm) == GST_MESSAGE_STATE_CHANGED) { - GstState oldState; - GstState newState; - GstState pending; - gst_message_parse_state_changed(gm, &oldState, &newState, &pending); - - if (newState == GST_STATE_READY) { - GstElement *element = GST_ELEMENT(GST_MESSAGE_SRC(gm)); - if (!element) - return false; - - QString elementName = QString::fromLatin1(gst_element_get_name(element)); - if (elementName.contains("jpegenc") && element != m_jpegEncoderElement) { - m_jpegEncoderElement = element; - GstPad *sinkpad = gst_element_get_static_pad(element, "sink"); - - //metadata event probe is installed before jpeg encoder - //to emit metadata available signal as soon as possible. -#ifdef DEBUG_CAPTURE - qDebug() << "install metadata probe"; -#endif - gst_pad_add_event_probe(sinkpad, - G_CALLBACK(CameraBinImageCapture::metadataEventProbe), - this); - -#ifdef DEBUG_CAPTURE - qDebug() << "install uncompressed buffer probe"; -#endif - gst_pad_add_buffer_probe(sinkpad, - G_CALLBACK(CameraBinImageCapture::uncompressedBufferProbe), - this); - - gst_object_unref(sinkpad); - } else if ((elementName.contains("jifmux") || elementName.startsWith("metadatamux")) - && element != m_metadataMuxerElement) { - //Jpeg encoded buffer probe is added after jifmux/metadatamux - //element to ensure the resulting jpeg buffer contains capture metadata - m_metadataMuxerElement = element; - - GstPad *srcpad = gst_element_get_static_pad(element, "src"); -#ifdef DEBUG_CAPTURE - qDebug() << "install jpeg buffer probe"; -#endif - gst_pad_add_buffer_probe(srcpad, - G_CALLBACK(CameraBinImageCapture::jpegBufferProbe), - this); - gst_object_unref(srcpad); - } - } - } else if (GST_MESSAGE_TYPE(gm) == GST_MESSAGE_ELEMENT) { - if (GST_MESSAGE_SRC(gm) == (GstObject *)m_session->cameraBin()) { - const GstStructure *structure = gst_message_get_structure(gm); - - if (gst_structure_has_name (structure, "image-done")) { - const gchar *fileName = gst_structure_get_string (structure, "filename"); -#ifdef DEBUG_CAPTURE - qDebug() << "Image saved" << fileName; -#endif - - if (m_session->captureDestinationControl()->captureDestination() & QCameraImageCapture::CaptureToFile) { - emit imageSaved(m_requestId, QString::fromUtf8(fileName)); - } else { -#ifdef DEBUG_CAPTURE - qDebug() << Q_FUNC_INFO << "Dropped saving file" << fileName; -#endif - //camerabin creates an empty file when captured buffer is dropped, - //let's remove it - QFileInfo info(QString::fromUtf8(fileName)); - if (info.exists() && info.isFile() && info.size() == 0) { - QFile(info.absoluteFilePath()).remove(); - } - } - } - } - } - - return false; -} - |