diff options
Diffstat (limited to 'src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp')
| -rw-r--r-- | src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp b/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp deleted file mode 100644 index fefb6edbd..000000000 --- a/src/plugins/gstreamer/mediacapture/qgstreamervideoencode.cpp +++ /dev/null @@ -1,296 +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 "qgstreamervideoencode.h" -#include "qgstreamercapturesession.h" -#include "qgstreamermediacontainercontrol.h" -#include <private/qgstutils_p.h> -#include <QtCore/qdebug.h> - -#include <math.h> - -QGstreamerVideoEncode::QGstreamerVideoEncode(QGstreamerCaptureSession *session) - :QVideoEncoderSettingsControl(session), m_session(session) - , m_codecs(QGstCodecsInfo::VideoEncoder) -{ -} - -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.supportedCodecs(); -} - -QString QGstreamerVideoEncode::videoCodecDescription(const QString &codecName) const -{ - return m_codecs.codecDescription(codecName); -} - -QStringList QGstreamerVideoEncode::supportedEncodingOptions(const QString &codec) const -{ - return m_codecs.codecOptions(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_codecs.codecElement(codec).constData(), "video-encoder"); - if (!encoderElement) - return 0; - - GstBin *encoderBin = GST_BIN(gst_bin_new("video-encoder-bin")); - - GstElement *sinkCapsFilter = gst_element_factory_make("capsfilter", "capsfilter-video"); - GstElement *srcCapsFilter = gst_element_factory_make("capsfilter", "capsfilter-video"); - gst_bin_add_many(encoderBin, sinkCapsFilter, srcCapsFilter, NULL); - - GstElement *colorspace = gst_element_factory_make("videoconvert", NULL); - gst_bin_add(encoderBin, colorspace); - gst_bin_add(encoderBin, encoderElement); - - gst_element_link_many(sinkCapsFilter, colorspace, encoderElement, srcCapsFilter, NULL); - - // add ghostpads - GstPad *pad = gst_element_get_static_pad(sinkCapsFilter, "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(srcCapsFilter, "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() == QMultimedia::ConstantQualityEncoding) { - QMultimedia::EncodingQuality qualityValue = m_videoSettings.quality(); - - if (codec == QLatin1String("video/x-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/x-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.startsWith(QLatin1String("video/mpeg"))) { - //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/x-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); - for (auto it = options.cbegin(), end = options.cend(); it != end; ++it) { - const QString &option = it.key(); - const QVariant &value = it.value(); - - switch (value.typeId()) { - case QMetaType::Int: - g_object_set(G_OBJECT(encoderElement), option.toLatin1(), value.toInt(), NULL); - break; - case QMetaType::Bool: - g_object_set(G_OBJECT(encoderElement), option.toLatin1(), value.toBool(), NULL); - break; - case QMetaType::Double: - g_object_set(G_OBJECT(encoderElement), option.toLatin1(), value.toDouble(), NULL); - break; - case QMetaType::QString: - g_object_set(G_OBJECT(encoderElement), option.toLatin1(), 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 = QGstUtils::videoFilterCaps(); - - if (!m_videoSettings.resolution().isEmpty()) { - gst_caps_set_simple( - caps, - "width", G_TYPE_INT, m_videoSettings.resolution().width(), - "height", G_TYPE_INT, m_videoSettings.resolution().height(), - NULL); - } - - if (m_videoSettings.frameRate() > 0.001) { - QPair<int,int> rate = rateAsRational(); - gst_caps_set_simple( - caps, - "framerate", GST_TYPE_FRACTION, rate.first, rate.second, - NULL); - } - - //qDebug() << "set video caps filter:" << gst_caps_to_string(caps); - - g_object_set(G_OBJECT(sinkCapsFilter), "caps", caps, NULL); - - gst_caps_unref(caps); - } - - // Some encoders support several codecs. Setting a caps filter downstream with the desired - // codec (which is actually a string representation of the caps) will make sure we use the - // correct codec. - GstCaps *caps = gst_caps_from_string(codec.toUtf8().constData()); - g_object_set(G_OBJECT(srcCapsFilter), "caps", caps, NULL); - gst_caps_unref(caps); - - 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; - - for (int curDenum : qAsConst(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_codecs.supportedStreamTypes(codecName); -} |