diff -r 000000000000 -r 876b1a06bc25 plugins/multimedia/gstreamer/mediacapture/maemo/qgstreamervideoencode_maemo.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/plugins/multimedia/gstreamer/mediacapture/maemo/qgstreamervideoencode_maemo.cpp Wed Aug 25 15:49:42 2010 +0300 @@ -0,0 +1,179 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qgstreamervideoencode_maemo.h" +#include "qgstreamercapturesession_maemo.h" +#include "qgstreamermediacontainercontrol_maemo.h" + +#include + +QGstreamerVideoEncode::QGstreamerVideoEncode(QGstreamerCaptureSession *session) + :QVideoEncoderControl(session), m_session(session) +{ + QList codecCandidates; + codecCandidates << "video/mpeg4"; //"video/h264" << "video/xvid" << "video/mpeg4" << "video/mpeg1" << "video/mpeg2" << "video/theora"; + + m_elementNames["video/mpeg4"] = "dspmp4venc"; + + m_codecOptions["video/mpeg4"] = QStringList() << "quantizer"; + + foreach( const QByteArray& codecName, codecCandidates ) { + QByteArray elementName = m_elementNames[codecName]; + GstElementFactory *factory = gst_element_factory_find(elementName.constData()); + if (factory) { + m_codecs.append(codecName); + const gchar *descr = gst_element_factory_get_description(factory); + m_codecDescriptions.insert(codecName, QString::fromUtf8(descr)); + + m_streamTypes.insert(codecName, + QGstreamerMediaContainerControl::supportedStreamTypes(factory, GST_PAD_SRC)); + + gst_object_unref(GST_OBJECT(factory)); + } + } + + if (!m_codecs.isEmpty()) + m_videoSettings.setCodec(m_codecs[0]); +} + +QGstreamerVideoEncode::~QGstreamerVideoEncode() +{ +} + +QList QGstreamerVideoEncode::supportedResolutions(const QVideoEncoderSettings &, bool *continuous) const +{ + if (continuous) + *continuous = m_session->videoInput() != 0; + + return m_session->videoInput() ? m_session->videoInput()->supportedResolutions() : QList(); +} + +QList< qreal > QGstreamerVideoEncode::supportedFrameRates(const QVideoEncoderSettings &, bool *continuous) const +{ + if (continuous) + *continuous = false; + + return m_session->videoInput() ? m_session->videoInput()->supportedFrameRates() : QList(); +} + +QStringList QGstreamerVideoEncode::supportedVideoCodecs() const +{ + return m_codecs; +} + +QString QGstreamerVideoEncode::videoCodecDescription(const QString &codecName) const +{ + return m_codecDescriptions.value(codecName); +} + +QStringList QGstreamerVideoEncode::supportedEncodingOptions(const QString &codec) const +{ + return m_codecOptions.value(codec); +} + +QVariant QGstreamerVideoEncode::encodingOption(const QString &codec, const QString &name) const +{ + return m_options[codec].value(name); +} + +void QGstreamerVideoEncode::setEncodingOption( + const QString &codec, const QString &name, const QVariant &value) +{ + m_options[codec][name] = value; +} + +QVideoEncoderSettings QGstreamerVideoEncode::videoSettings() const +{ + return m_videoSettings; +} + +void QGstreamerVideoEncode::setVideoSettings(const QVideoEncoderSettings &settings) +{ + m_videoSettings = settings; +} + +GstElement *QGstreamerVideoEncode::createEncoder() +{ + QString codec = m_videoSettings.codec(); + + GstElement *encoderElement = gst_element_factory_make( m_elementNames.value(codec).constData(), "video-encoder"); + + return encoderElement; +} + +QPair QGstreamerVideoEncode::rateAsRational() const +{ + qreal frameRate = m_videoSettings.frameRate(); + + if (frameRate > 0.001) { + //convert to rational number + QList denumCandidates; + denumCandidates << 1 << 2 << 3 << 5 << 10 << 1001 << 1000; + + qreal error = 1.0; + int num = 1; + int denum = 1; + + foreach (int curDenum, denumCandidates) { + int curNum = qRound(frameRate*curDenum); + qreal curError = qAbs(qreal(curNum)/curDenum - frameRate); + + if (curError < error) { + error = curError; + num = curNum; + denum = curDenum; + } + + if (curError < 1e-8) + break; + } + + return QPair(num,denum); + } + + return QPair(); +} + + +QSet QGstreamerVideoEncode::supportedStreamTypes(const QString &codecName) const +{ + return m_streamTypes.value(codecName); +}