diff options
Diffstat (limited to 'src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp')
| -rw-r--r-- | src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp b/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp deleted file mode 100644 index b164bc31a..000000000 --- a/src/plugins/gstreamer/camerabin/camerabinimagecapture.cpp +++ /dev/null @@ -1,380 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "camerabinimagecapture.h" -#include "camerabincontrol.h" -#include "camerabincapturedestination.h" -#include "camerabincapturebufferformat.h" -#include "camerabinsession.h" -#include "camerabinresourcepolicy.h" -#include <private/qgstvideobuffer_p.h> -#include <private/qvideosurfacegstsink_p.h> -#include <private/qgstutils_p.h> -#include <QtMultimedia/qmediametadata.h> -#include <QtCore/qdebug.h> -#include <QtCore/qbuffer.h> -#include <QtGui/qimagereader.h> - -//#define DEBUG_CAPTURE - -#define IMAGE_DONE_SIGNAL "image-done" - -QT_BEGIN_NAMESPACE - -CameraBinImageCapture::CameraBinImageCapture(CameraBinSession *session) - :QCameraImageCaptureControl(session) - , m_encoderProbe(this) - , m_muxerProbe(this) - , m_session(session) - , m_jpegEncoderElement(0) - , m_metadataMuxerElement(0) - , m_requestId(0) - , m_ready(false) -{ - connect(m_session, SIGNAL(statusChanged(QCamera::Status)), SLOT(updateState())); - connect(m_session, SIGNAL(imageExposed(int)), this, SIGNAL(imageExposed(int))); - connect(m_session, SIGNAL(imageCaptured(int,QImage)), this, SIGNAL(imageCaptured(int,QImage))); - connect(m_session->cameraControl()->resourcePolicy(), SIGNAL(canCaptureChanged()), this, SLOT(updateState())); - - 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->status() == QCamera::ActiveStatus - && m_session->cameraControl()->resourcePolicy()->canCapture(); - if (m_ready != ready) { -#ifdef DEBUG_CAPTURE - qDebug() << "readyForCaptureChanged" << ready; -#endif - emit readyForCaptureChanged(m_ready = ready); - } -} - -#if GST_CHECK_VERSION(1,0,0) -GstPadProbeReturn CameraBinImageCapture::encoderEventProbe( - GstPad *, GstPadProbeInfo *info, gpointer user_data) -{ - GstEvent * const event = gst_pad_probe_info_get_event(info); -#else -gboolean CameraBinImageCapture::encoderEventProbe( - GstElement *, GstEvent *event, gpointer user_data) -{ -#endif - CameraBinImageCapture * const self = static_cast<CameraBinImageCapture *>(user_data); - if (event && 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 - - QVariantMap tags; - tags[QMediaMetaData::ISOSpeedRatings] = extendedTags.value("capturing-iso-speed"); - tags[QMediaMetaData::DigitalZoomRatio] = extendedTags.value("capturing-digital-zoom-ratio"); - tags[QMediaMetaData::ExposureTime] = extendedTags.value("capturing-shutter-speed"); - tags[QMediaMetaData::WhiteBalance] = extendedTags.value("capturing-white-balance"); - tags[QMediaMetaData::Flash] = extendedTags.value("capturing-flash-fired"); - tags[QMediaMetaData::FocalLengthIn35mmFilm] = extendedTags.value("capturing-focal-length"); - tags[QMediaMetaData::MeteringMode] = extendedTags.value("capturing-metering-mode"); - tags[QMediaMetaData::ExposureMode] = extendedTags.value("capturing-exposure-mode"); - tags[QMediaMetaData::FNumber] = extendedTags.value("capturing-focal-ratio"); - tags[QMediaMetaData::ExposureMode] = extendedTags.value("capturing-exposure-mode"); - - for (auto i = tags.cbegin(), end = tags.cend(); i != end; ++i) { - if (i.value().isValid()) { - QMetaObject::invokeMethod(self, "imageMetadataAvailable", - Qt::QueuedConnection, - Q_ARG(int, self->m_requestId), - Q_ARG(QString, i.key()), - Q_ARG(QVariant, i.value())); - } - } - } -#if GST_CHECK_VERSION(1,0,0) - return GST_PAD_PROBE_OK; -#else - return TRUE; -#endif -} - -void CameraBinImageCapture::EncoderProbe::probeCaps(GstCaps *caps) -{ -#if GST_CHECK_VERSION(1,0,0) - capture->m_bufferFormat = QGstUtils::formatForCaps(caps, &capture->m_videoInfo); -#else - int bytesPerLine = 0; - QVideoSurfaceFormat format = QGstUtils::formatForCaps(caps, &bytesPerLine); - capture->m_bytesPerLine = bytesPerLine; - capture->m_bufferFormat = format; -#endif -} - -bool CameraBinImageCapture::EncoderProbe::probeBuffer(GstBuffer *buffer) -{ - CameraBinSession * const session = capture->m_session; - -#ifdef DEBUG_CAPTURE - qDebug() << "Uncompressed buffer probe"; -#endif - - QCameraImageCapture::CaptureDestinations destination = - session->captureDestinationControl()->captureDestination(); - QVideoFrame::PixelFormat format = session->captureBufferFormatControl()->bufferFormat(); - - if (destination & QCameraImageCapture::CaptureToBuffer) { - if (format != QVideoFrame::Format_Jpeg) { -#ifdef DEBUG_CAPTURE - qDebug() << "imageAvailable(uncompressed):" << format; -#endif -#if GST_CHECK_VERSION(1,0,0) - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, capture->m_videoInfo); -#else - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, capture->m_bytesPerLine); -#endif - - QVideoFrame frame( - videoBuffer, - capture->m_bufferFormat.frameSize(), - capture->m_bufferFormat.pixelFormat()); - - QMetaObject::invokeMethod(capture, "imageAvailable", - Qt::QueuedConnection, - Q_ARG(int, capture->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; -} - -void CameraBinImageCapture::MuxerProbe::probeCaps(GstCaps *caps) -{ - capture->m_jpegResolution = QGstUtils::capsCorrectedResolution(caps); -} - -bool CameraBinImageCapture::MuxerProbe::probeBuffer(GstBuffer *buffer) -{ - CameraBinSession * const session = capture->m_session; - - QCameraImageCapture::CaptureDestinations destination = - session->captureDestinationControl()->captureDestination(); - - if ((destination & QCameraImageCapture::CaptureToBuffer) && - session->captureBufferFormatControl()->bufferFormat() == QVideoFrame::Format_Jpeg) { - - QSize resolution = capture->m_jpegResolution; - //if resolution is not presented in caps, try to find it from encoded jpeg data: -#if GST_CHECK_VERSION(1,0,0) - GstMapInfo mapInfo; - if (resolution.isEmpty() && gst_buffer_map(buffer, &mapInfo, GST_MAP_READ)) { - QBuffer data; - data.setData(reinterpret_cast<const char*>(mapInfo.data), mapInfo.size); - - QImageReader reader(&data, "JPEG"); - resolution = reader.size(); - - gst_buffer_unmap(buffer, &mapInfo); - } - - GstVideoInfo info; - gst_video_info_set_format( - &info, GST_VIDEO_FORMAT_ENCODED, resolution.width(), resolution.height()); - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, info); -#else - 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(); - } - - QGstVideoBuffer *videoBuffer = new QGstVideoBuffer(buffer, - -1); //bytesPerLine is not available for jpegs -#endif - - - QVideoFrame frame(videoBuffer, - resolution, - QVideoFrame::Format_Jpeg); - QMetaObject::invokeMethod(capture, "imageAvailable", - Qt::QueuedConnection, - Q_ARG(int, capture->m_requestId), - Q_ARG(QVideoFrame, frame)); - } - - - // Theoretically we could drop the buffer here when don't want to capture to file but that - // prevents camerabin from recognizing that capture has been completed and returning - // to its idle state. - return true; -} - - -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; - - gchar *name = gst_element_get_name(element); - QString elementName = QString::fromLatin1(name); - g_free(name); -#if !GST_CHECK_VERSION(1,0,0) - GstElementClass *elementClass = GST_ELEMENT_GET_CLASS(element); - QString elementLongName = elementClass->details.longname; -#endif - 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 -#if GST_CHECK_VERSION(1,0,0) - gst_pad_add_probe( - sinkpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, encoderEventProbe, this, NULL); -#else - gst_pad_add_event_probe(sinkpad, G_CALLBACK(encoderEventProbe), this); -#endif -#ifdef DEBUG_CAPTURE - qDebug() << "install uncompressed buffer probe"; -#endif - m_encoderProbe.addProbeToPad(sinkpad, true); - - gst_object_unref(sinkpad); - } else if ((elementName.contains("jifmux") -#if !GST_CHECK_VERSION(1,0,0) - || elementLongName == QLatin1String("JPEG stream muxer") -#endif - || 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 - m_muxerProbe.addProbeToPad(srcpad); - - 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 - QFileInfo info(QString::fromUtf8(fileName)); - if (info.exists() && info.isFile()) - QFile(info.absoluteFilePath()).remove(); - } - } - } - } - - return false; -} - -QT_END_NAMESPACE |