diff options
Diffstat (limited to 'src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp')
| -rw-r--r-- | src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp b/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp deleted file mode 100644 index a2f139e..0000000 --- a/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp +++ /dev/null @@ -1,331 +0,0 @@ -/**************************************************************************** -** -** 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 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 "qgstreamervideoencode.h" -#include "qgstreamercapturesession.h" -#include "qgstreamermediacontainercontrol.h" - -#include <QtCore/qdebug.h> - -#include <math.h> - -QGstreamerVideoEncode::QGstreamerVideoEncode(QGstreamerCaptureSession *session) - :QVideoEncoderControl(session), m_session(session) -{ - QList<QByteArray> codecCandidates; - codecCandidates << "video/h264" << "video/xvid" << "video/mpeg4" << "video/mpeg1" << "video/mpeg2" << "video/theora"; - - m_elementNames["video/h264"] = "x264enc"; - m_elementNames["video/xvid"] = "xvidenc"; - m_elementNames["video/mpeg4"] = "ffenc_mpeg4"; - m_elementNames["video/mpeg1"] = "ffenc_mpeg1video"; - m_elementNames["video/mpeg2"] = "ffenc_mpeg2video"; - m_elementNames["video/theora"] = "theoraenc"; - - m_codecOptions["video/h264"] = QStringList() << "quantizer"; - m_codecOptions["video/xvid"] = QStringList() << "quantizer" << "profile"; - m_codecOptions["video/mpeg4"] = QStringList() << "quantizer"; - m_codecOptions["video/mpeg1"] = QStringList() << "quantizer"; - m_codecOptions["video/mpeg2"] = QStringList() << "quantizer"; - m_codecOptions["video/theora"] = QStringList(); - - 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<QSize> QGstreamerVideoEncode::supportedResolutions(const QVideoEncoderSettings &, bool *continuous) const -{ - if (continuous) - *continuous = m_session->videoInput() != 0; - - return m_session->videoInput() ? m_session->videoInput()->supportedResolutions() : QList<QSize>(); -} - -QList< qreal > QGstreamerVideoEncode::supportedFrameRates(const QVideoEncoderSettings &, bool *continuous) const -{ - if (continuous) - *continuous = false; - - return m_session->videoInput() ? m_session->videoInput()->supportedFrameRates() : QList<qreal>(); -} - -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(); - //qDebug() << "create encoder for video codec" << codec; - GstElement *encoderElement = gst_element_factory_make( m_elementNames.value(codec).constData(), "video-encoder"); - if (!encoderElement) - return 0; - - GstBin *encoderBin = GST_BIN(gst_bin_new("video-encoder-bin")); - - GstElement *capsFilter = gst_element_factory_make("capsfilter", "capsfilter-video"); - gst_bin_add(encoderBin, capsFilter); - - GstElement *colorspace = gst_element_factory_make("ffmpegcolorspace", NULL); - gst_bin_add(encoderBin, colorspace); - gst_bin_add(encoderBin, encoderElement); - - gst_element_link_many(capsFilter, colorspace, encoderElement, NULL); - - // add ghostpads - GstPad *pad = gst_element_get_static_pad(capsFilter, "sink"); - gst_element_add_pad(GST_ELEMENT(encoderBin), gst_ghost_pad_new("sink", pad)); - gst_object_unref(GST_OBJECT(pad)); - - pad = gst_element_get_static_pad(encoderElement, "src"); - gst_element_add_pad(GST_ELEMENT(encoderBin), gst_ghost_pad_new("src", pad)); - gst_object_unref(GST_OBJECT(pad)); - - if (encoderElement) { - if (m_videoSettings.encodingMode() == QtMultimedia::ConstantQualityEncoding) { - QtMultimedia::EncodingQuality qualityValue = m_videoSettings.quality(); - - if (codec == QLatin1String("video/h264")) { - //constant quantizer mode - g_object_set(G_OBJECT(encoderElement), "pass", 4, NULL); - int qualityTable[] = { - 50, //VeryLow - 35, //Low - 21, //Normal - 15, //High - 8 //VeryHigh - }; - g_object_set(G_OBJECT(encoderElement), "quantizer", qualityTable[qualityValue], NULL); - } else if (codec == QLatin1String("video/xvid")) { - //constant quantizer mode - g_object_set(G_OBJECT(encoderElement), "pass", 3, NULL); - int qualityTable[] = { - 32, //VeryLow - 12, //Low - 5, //Normal - 3, //High - 2 //VeryHigh - }; - int quant = qualityTable[qualityValue]; - g_object_set(G_OBJECT(encoderElement), "quantizer", quant, NULL); - } else if (codec == QLatin1String("video/mpeg4") || - codec == QLatin1String("video/mpeg1") || - codec == QLatin1String("video/mpeg2") ) { - //constant quantizer mode - g_object_set(G_OBJECT(encoderElement), "pass", 2, NULL); - //quant from 1 to 30, default ~3 - double qualityTable[] = { - 20, //VeryLow - 8.0, //Low - 3.0, //Normal - 2.5, //High - 2.0 //VeryHigh - }; - double quant = qualityTable[qualityValue]; - g_object_set(G_OBJECT(encoderElement), "quantizer", quant, NULL); - } else if (codec == QLatin1String("video/theora")) { - int qualityTable[] = { - 8, //VeryLow - 16, //Low - 32, //Normal - 45, //High - 60 //VeryHigh - }; - //quality from 0 to 63 - int quality = qualityTable[qualityValue]; - g_object_set(G_OBJECT(encoderElement), "quality", quality, NULL); - } - } else { - int bitrate = m_videoSettings.bitRate(); - if (bitrate > 0) { - g_object_set(G_OBJECT(encoderElement), "bitrate", bitrate, NULL); - } - } - - QMap<QString,QVariant> options = m_options.value(codec); - QMapIterator<QString,QVariant> it(options); - while (it.hasNext()) { - it.next(); - QString option = it.key(); - QVariant value = it.value(); - - switch (value.type()) { - case QVariant::Int: - g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toInt(), NULL); - break; - case QVariant::Bool: - g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toBool(), NULL); - break; - case QVariant::Double: - g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toDouble(), NULL); - break; - case QVariant::String: - g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toString().toUtf8().constData(), NULL); - break; - default: - qWarning() << "unsupported option type:" << option << value; - break; - } - - } - } - - if (!m_videoSettings.resolution().isEmpty() || m_videoSettings.frameRate() > 0.001) { - GstCaps *caps = gst_caps_new_empty(); - QStringList structureTypes; - structureTypes << "video/x-raw-yuv" << "video/x-raw-rgb"; - - foreach(const QString &structureType, structureTypes) { - GstStructure *structure = gst_structure_new(structureType.toAscii().constData(), NULL); - - if (!m_videoSettings.resolution().isEmpty()) { - gst_structure_set(structure, "width", G_TYPE_INT, m_videoSettings.resolution().width(), NULL); - gst_structure_set(structure, "height", G_TYPE_INT, m_videoSettings.resolution().height(), NULL); - } - - if (m_videoSettings.frameRate() > 0.001) { - QPair<int,int> rate = rateAsRational(); - - //qDebug() << "frame rate:" << num << denum; - - gst_structure_set(structure, "framerate", GST_TYPE_FRACTION, rate.first, rate.second, NULL); - } - - gst_caps_append_structure(caps,structure); - } - - //qDebug() << "set video caps filter:" << gst_caps_to_string(caps); - - g_object_set(G_OBJECT(capsFilter), "caps", caps, NULL); - } - - return GST_ELEMENT(encoderBin); -} - -QPair<int,int> QGstreamerVideoEncode::rateAsRational() const -{ - qreal frameRate = m_videoSettings.frameRate(); - - if (frameRate > 0.001) { - //convert to rational number - QList<int> 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<int,int>(num,denum); - } - - return QPair<int,int>(); -} - - -QSet<QString> QGstreamerVideoEncode::supportedStreamTypes(const QString &codecName) const -{ - return m_streamTypes.value(codecName); -} |