Ported gstreamer camera backend from camerabin to camerabin2.
Change-Id: Ieb08df492e7b9cbfe35e93a056685cfdac6e704e Reviewed-on: http://codereview.qt.nokia.com/2994 Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com> Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
This commit is contained in:
Dmytro Poplavskiy
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Qt by Nokia
Qt by Nokia
parent
abee3a6548
commit
da9b436cd1
@@ -46,58 +46,10 @@
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#include <QtCore/qdebug.h>
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CameraBinVideoEncoder::CameraBinVideoEncoder(CameraBinSession *session)
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:QVideoEncoderControl(session), m_session(session)
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:QVideoEncoderControl(session),
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m_session(session),
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m_codecs(QGstCodecsInfo::VideoEncoder)
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{
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QList<QByteArray> codecCandidates;
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#if defined(Q_WS_MAEMO_6)
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codecCandidates << "video/mpeg4" << "video/h264" << "video/h263";
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m_elementNames["video/h264"] = "dsph264enc";
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m_elementNames["video/mpeg4"] = "dsphdmp4venc";
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m_elementNames["video/h263"] = "dsph263enc";
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QStringList options = QStringList() << "mode" << "keyframe-interval" << "max-bitrate" << "intra-refresh";
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m_codecOptions["video/h264"] = options;
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m_codecOptions["video/mpeg4"] = options;
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m_codecOptions["video/h263"] = options;
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#else
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codecCandidates << "video/h264" << "video/xvid" << "video/mpeg4"
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<< "video/mpeg1" << "video/mpeg2" << "video/theora"
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<< "video/VP8" << "video/h261" << "video/mjpeg";
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m_elementNames["video/h264"] = "x264enc";
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m_elementNames["video/xvid"] = "xvidenc";
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m_elementNames["video/mpeg4"] = "ffenc_mpeg4";
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m_elementNames["video/mpeg1"] = "ffenc_mpeg1video";
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m_elementNames["video/mpeg2"] = "ffenc_mpeg2video";
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m_elementNames["video/theora"] = "theoraenc";
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m_elementNames["video/mjpeg"] = "ffenc_mjpeg";
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m_elementNames["video/VP8"] = "vp8enc";
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m_elementNames["video/h261"] = "ffenc_h261";
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m_codecOptions["video/h264"] = QStringList() << "quantizer";
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m_codecOptions["video/xvid"] = QStringList() << "quantizer" << "profile";
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m_codecOptions["video/mpeg4"] = QStringList() << "quantizer";
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m_codecOptions["video/mpeg1"] = QStringList() << "quantizer";
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m_codecOptions["video/mpeg2"] = QStringList() << "quantizer";
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m_codecOptions["video/theora"] = QStringList();
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#endif
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foreach( const QByteArray& codecName, codecCandidates ) {
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QByteArray elementName = m_elementNames[codecName];
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GstElementFactory *factory = gst_element_factory_find(elementName.constData());
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if (factory) {
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m_codecs.append(codecName);
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const gchar *descr = gst_element_factory_get_description(factory);
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m_codecDescriptions.insert(codecName, QString::fromUtf8(descr));
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m_streamTypes.insert(codecName,
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CameraBinContainer::supportedStreamTypes(factory, GST_PAD_SRC));
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gst_object_unref(GST_OBJECT(factory));
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}
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}
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}
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CameraBinVideoEncoder::~CameraBinVideoEncoder()
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@@ -134,12 +86,12 @@ QList< qreal > CameraBinVideoEncoder::supportedFrameRates(const QVideoEncoderSet
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QStringList CameraBinVideoEncoder::supportedVideoCodecs() const
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{
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return m_codecs;
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return m_codecs.supportedCodecs();
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}
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QString CameraBinVideoEncoder::videoCodecDescription(const QString &codecName) const
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{
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return m_codecDescriptions.value(codecName);
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return m_codecs.codecDescription(codecName);
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}
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QStringList CameraBinVideoEncoder::supportedEncodingOptions(const QString &codec) const
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@@ -180,118 +132,6 @@ void CameraBinVideoEncoder::resetActualSettings()
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m_videoSettings = m_userSettings;
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}
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GstElement *CameraBinVideoEncoder::createEncoder()
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{
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QString codec = m_videoSettings.codec();
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QByteArray elementName = m_elementNames.value(codec);
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GstElement *encoderElement = gst_element_factory_make( elementName.constData(), "video-encoder");
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if (encoderElement) {
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if (m_videoSettings.encodingMode() == QtMultimediaKit::ConstantQualityEncoding) {
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QtMultimediaKit::EncodingQuality qualityValue = m_videoSettings.quality();
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if (elementName == "x264enc") {
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//constant quantizer mode
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g_object_set(G_OBJECT(encoderElement), "pass", 4, NULL);
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int qualityTable[] = {
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50, //VeryLow
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35, //Low
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21, //Normal
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15, //High
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8 //VeryHigh
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};
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g_object_set(G_OBJECT(encoderElement), "quantizer", qualityTable[qualityValue], NULL);
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} else if (elementName == "xvidenc") {
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//constant quantizer mode
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g_object_set(G_OBJECT(encoderElement), "pass", 3, NULL);
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int qualityTable[] = {
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32, //VeryLow
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12, //Low
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5, //Normal
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3, //High
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2 //VeryHigh
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};
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int quant = qualityTable[qualityValue];
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g_object_set(G_OBJECT(encoderElement), "quantizer", quant, NULL);
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} else if (elementName == "ffenc_mpeg4" ||
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elementName == "ffenc_mpeg1video" ||
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elementName == "ffenc_mpeg2video" ) {
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//constant quantizer mode
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g_object_set(G_OBJECT(encoderElement), "pass", 2, NULL);
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//quant from 1 to 30, default ~3
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double qualityTable[] = {
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20, //VeryLow
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8.0, //Low
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3.0, //Normal
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2.5, //High
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2.0 //VeryHigh
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};
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double quant = qualityTable[qualityValue];
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g_object_set(G_OBJECT(encoderElement), "quantizer", quant, NULL);
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} else if (elementName == "theoraenc") {
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int qualityTable[] = {
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8, //VeryLow
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16, //Low
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32, //Normal
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45, //High
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60 //VeryHigh
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};
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//quality from 0 to 63
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int quality = qualityTable[qualityValue];
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g_object_set(G_OBJECT(encoderElement), "quality", quality, NULL);
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} else if (elementName == "dsph264enc" ||
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elementName == "dspmp4venc" ||
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elementName == "dsphdmp4venc" ||
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elementName == "dsph263enc") {
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//only bitrate parameter is supported
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int qualityTable[] = {
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1000000, //VeryLow
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2000000, //Low
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4000000, //Normal
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8000000, //High
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16000000 //VeryHigh
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};
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int bitrate = qualityTable[qualityValue];
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g_object_set(G_OBJECT(encoderElement), "bitrate", bitrate, NULL);
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}
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} else {
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int bitrate = m_videoSettings.bitRate();
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if (bitrate > 0) {
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g_object_set(G_OBJECT(encoderElement), "bitrate", bitrate, NULL);
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}
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}
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QMap<QString,QVariant> options = m_options.value(codec);
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QMapIterator<QString,QVariant> it(options);
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while (it.hasNext()) {
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it.next();
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QString option = it.key();
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QVariant value = it.value();
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switch (value.type()) {
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case QVariant::Int:
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g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toInt(), NULL);
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break;
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case QVariant::Bool:
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g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toBool(), NULL);
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break;
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case QVariant::Double:
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g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toDouble(), NULL);
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break;
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case QVariant::String:
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g_object_set(G_OBJECT(encoderElement), option.toAscii(), value.toString().toUtf8().constData(), NULL);
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break;
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default:
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qWarning() << "unsupported option type:" << option << value;
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break;
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}
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}
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}
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return encoderElement;
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}
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QPair<int,int> CameraBinVideoEncoder::rateAsRational(qreal frameRate) const
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{
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@@ -324,8 +164,19 @@ QPair<int,int> CameraBinVideoEncoder::rateAsRational(qreal frameRate) const
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return QPair<int,int>();
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}
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QSet<QString> CameraBinVideoEncoder::supportedStreamTypes(const QString &codecName) const
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GstEncodingProfile *CameraBinVideoEncoder::createProfile()
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{
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return m_streamTypes.value(codecName);
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QString codec = m_videoSettings.codec();
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GstCaps *caps;
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if (codec.isEmpty())
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caps = gst_caps_new_any();
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else
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caps = gst_caps_from_string(codec.toLatin1());
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return (GstEncodingProfile *)gst_encoding_video_profile_new(
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caps,
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NULL, //preset
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NULL, //restriction
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0); //presence
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}
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