Initial copy of QtMultimediaKit.

Comes from original repo, with SHA1:
2c82d5611655e5967f5c5095af50c0991c4378b2

1 files changed, 346 insertions, 0 deletions

diff --git a/src/plugins/gstreamer/camerabin/camerabinvideoencoder.cpp b/src/plugins/gstreamer/camerabin/camerabinvideoencoder.cpp
new file mode 100644
index 000000000..b1809abcb
--- /dev/null
+++ b/src/plugins/gstreamer/camerabin/camerabinvideoencoder.cpp
@@ -0,0 +1,346 @@
+/****************************************************************************
+**
+** 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 "camerabinvideoencoder.h"
+#include "camerabinsession.h"
+#include "camerabincontainer.h"
+
+#include <QtCore/qdebug.h>
+
+CameraBinVideoEncoder::CameraBinVideoEncoder(CameraBinSession *session)
+    :QVideoEncoderControl(session), m_session(session)
+{
+    QList<QByteArray> codecCandidates;
+#if defined(Q_WS_MAEMO_5)
+    codecCandidates << "video/mpeg4" << "video/h264" << "video/h263" << "video/theora"
+                    << "video/mpeg2" << "video/mpeg1" << "video/mjpeg" << "video/VP8" << "video/h261";
+
+    m_elementNames["video/h264"] = "dsph264enc";
+    m_elementNames["video/mpeg4"] = "dspmp4venc";
+    m_elementNames["video/h263"] = "dsph263enc";
+    m_elementNames["video/theora"] = "theoraenc";
+    m_elementNames["video/mpeg2"] = "ffenc_mpeg2video";
+    m_elementNames["video/mpeg1"] = "ffenc_mpeg1video";
+    m_elementNames["video/mjpeg"] = "ffenc_mjpeg";
+    m_elementNames["video/VP8"] = "vp8enc";
+    m_elementNames["video/h261"] = "ffenc_h261";
+
+    m_codecOptions["video/mpeg4"] = QStringList() << "mode" << "keyframe-interval";
+#elif defined(Q_WS_MAEMO_6)
+    codecCandidates << "video/mpeg4" << "video/h264" << "video/h263";
+
+    m_elementNames["video/h264"] = "dsph264enc";
+    m_elementNames["video/mpeg4"] = "dsphdmp4venc";
+    m_elementNames["video/h263"] = "dsph263enc";
+
+    QStringList options = QStringList() << "mode" << "keyframe-interval" << "max-bitrate" << "intra-refresh";
+    m_codecOptions["video/h264"] = options;
+    m_codecOptions["video/mpeg4"] = options;
+    m_codecOptions["video/h263"] = options;
+#else
+    codecCandidates << "video/h264" << "video/xvid" << "video/mpeg4"
+                    << "video/mpeg1" << "video/mpeg2" << "video/theora"
+                    << "video/VP8" << "video/h261" << "video/mjpeg";
+
+    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_elementNames["video/mjpeg"] = "ffenc_mjpeg";
+    m_elementNames["video/VP8"] = "vp8enc";
+    m_elementNames["video/h261"] = "ffenc_h261";
+
+    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();
+
+#endif
+
+    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,
+                                 CameraBinContainer::supportedStreamTypes(factory, GST_PAD_SRC));
+
+            gst_object_unref(GST_OBJECT(factory));
+        }
+    }
+}
+
+CameraBinVideoEncoder::~CameraBinVideoEncoder()
+{
+}
+
+QList<QSize> CameraBinVideoEncoder::supportedResolutions(const QVideoEncoderSettings &settings, bool *continuous) const
+{
+    if (continuous)
+        *continuous = false;
+
+    QPair<int,int> rate = rateAsRational(settings.frameRate());
+
+    //select the closest supported rational rate to settings.frameRate()
+
+    return m_session->supportedResolutions(rate, continuous, QCamera::CaptureVideo);
+}
+
+QList< qreal > CameraBinVideoEncoder::supportedFrameRates(const QVideoEncoderSettings &settings, bool *continuous) const
+{
+    if (continuous)
+        *continuous = false;
+
+    QList< qreal > res;
+    QPair<int,int> rate;
+
+    foreach(rate, m_session->supportedFrameRates(settings.resolution(), continuous)) {
+        if (rate.second > 0)
+            res << qreal(rate.first)/rate.second;
+    }
+
+    return res;
+}
+
+QStringList CameraBinVideoEncoder::supportedVideoCodecs() const
+{
+    return m_codecs;
+}
+
+QString CameraBinVideoEncoder::videoCodecDescription(const QString &codecName) const
+{
+    return m_codecDescriptions.value(codecName);
+}
+
+QStringList CameraBinVideoEncoder::supportedEncodingOptions(const QString &codec) const
+{
+    return m_codecOptions.value(codec);
+}
+
+QVariant CameraBinVideoEncoder::encodingOption(const QString &codec, const QString &name) const
+{
+    return m_options[codec].value(name);
+}
+
+void CameraBinVideoEncoder::setEncodingOption(
+        const QString &codec, const QString &name, const QVariant &value)
+{
+    m_options[codec][name] = value;
+}
+
+QVideoEncoderSettings CameraBinVideoEncoder::videoSettings() const
+{
+    return m_videoSettings;
+}
+
+void CameraBinVideoEncoder::setVideoSettings(const QVideoEncoderSettings &settings)
+{
+    m_videoSettings = settings;
+    m_userSettings = settings;
+    emit settingsChanged();
+}
+
+void CameraBinVideoEncoder::setActualVideoSettings(const QVideoEncoderSettings &settings)
+{
+    m_videoSettings = settings;
+}
+
+void CameraBinVideoEncoder::resetActualSettings()
+{
+    m_videoSettings = m_userSettings;
+}
+
+GstElement *CameraBinVideoEncoder::createEncoder()
+{
+    QString codec = m_videoSettings.codec();
+    QByteArray elementName = m_elementNames.value(codec);
+
+    GstElement *encoderElement = gst_element_factory_make( elementName.constData(), "video-encoder");
+
+    if (encoderElement) {
+        if (m_videoSettings.encodingMode() == QtMultimediaKit::ConstantQualityEncoding) {
+            QtMultimediaKit::EncodingQuality qualityValue = m_videoSettings.quality();
+
+            if (elementName == "x264enc") {
+                //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 (elementName == "xvidenc") {
+                //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 (elementName == "ffenc_mpeg4" ||
+                       elementName == "ffenc_mpeg1video" ||
+                       elementName == "ffenc_mpeg2video" ) {
+                //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 (elementName == "theoraenc") {
+                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 if (elementName == "dsph264enc" ||
+                       elementName == "dspmp4venc" ||
+                       elementName == "dsphdmp4venc" ||
+                       elementName == "dsph263enc") {
+                //only bitrate parameter is supported
+                int qualityTable[] = {
+                    1000000, //VeryLow
+                    2000000, //Low
+                    4000000, //Normal
+                    8000000, //High
+                    16000000 //VeryHigh
+                };
+                int bitrate = qualityTable[qualityValue];
+                g_object_set(G_OBJECT(encoderElement), "bitrate", bitrate, 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;
+            }
+
+        }
+    }
+
+    return encoderElement;
+}
+
+QPair<int,int> CameraBinVideoEncoder::rateAsRational(qreal frameRate) const
+{
+    if (frameRate > 0.001) {
+        //convert to rational number
+        QList<int> denumCandidates;
+        denumCandidates << 1 << 2 << 3 << 5 << 10 << 25 << 30 << 50 << 100 << 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> CameraBinVideoEncoder::supportedStreamTypes(const QString &codecName) const
+{
+    return m_streamTypes.value(codecName);
+}