--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/multimedia/gstreamer/mediacapture/qgstreameraudioencode.cpp Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,290 @@
+/****************************************************************************
+**
+** 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 "qgstreameraudioencode.h"
+#include "qgstreamercapturesession.h"
+#include "qgstreamermediacontainercontrol.h"
+
+#include <QtCore/qdebug.h>
+
+#include <math.h>
+
+QGstreamerAudioEncode::QGstreamerAudioEncode(QObject *parent)
+ :QAudioEncoderControl(parent)
+{
+ QList<QByteArray> codecCandidates;
+
+#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)
+ codecCandidates << "audio/PCM"; //<< "audio/AMR" << "audio/AMR-WB" << "audio/speex";
+#else
+ codecCandidates << "audio/mpeg" << "audio/vorbis" << "audio/speex" << "audio/GSM"
+ << "audio/PCM" << "audio/AMR" << "audio/AMR-WB";
+#endif
+
+#if defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)
+ m_elementNames["audio/PCM"] = "audioresample";
+ m_elementNames["audio/AMR"] = "nokiaamrnbenc";
+ m_elementNames["audio/AMR-WB"] = "nokiaamrwbenc";
+ m_elementNames["audio/speex"] = "speexenc";
+#else
+ m_elementNames["audio/mpeg"] = "lamemp3enc";
+ m_elementNames["audio/vorbis"] = "vorbisenc";
+ m_elementNames["audio/speex"] = "speexenc";
+ m_elementNames["audio/GSM"] = "gsmenc";
+ m_elementNames["audio/PCM"] = "audioresample";
+ m_elementNames["audio/AMR"] = "amrnbenc";
+ m_elementNames["audio/AMR-WB"] = "amrwbenc";
+#endif
+
+ m_codecOptions["audio/vorbis"] = QStringList() << "min-bitrate" << "max-bitrate";
+ m_codecOptions["audio/mpeg"] = QStringList() << "mode";
+ m_codecOptions["audio/speex"] = QStringList() << "mode" << "vbr" << "vad" << "dtx";
+ m_codecOptions["audio/GSM"] = QStringList();
+ m_codecOptions["audio/PCM"] = QStringList();
+ m_codecOptions["audio/AMR"] = QStringList();
+ m_codecOptions["audio/AMR-WB"] = 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);
+
+ if (codecName == QByteArray("audio/PCM"))
+ m_codecDescriptions.insert(codecName, tr("Raw PCM audio"));
+ else
+ 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_audioSettings.setCodec(m_codecs[0]);
+}
+
+QGstreamerAudioEncode::~QGstreamerAudioEncode()
+{
+}
+
+QStringList QGstreamerAudioEncode::supportedAudioCodecs() const
+{
+ return m_codecs;
+}
+
+QString QGstreamerAudioEncode::codecDescription(const QString &codecName) const
+{
+ return m_codecDescriptions.value(codecName);
+}
+
+QStringList QGstreamerAudioEncode::supportedEncodingOptions(const QString &codec) const
+{
+ return m_codecOptions.value(codec);
+}
+
+QVariant QGstreamerAudioEncode::encodingOption(
+ const QString &codec, const QString &name) const
+{
+ return m_options[codec].value(name);
+}
+
+void QGstreamerAudioEncode::setEncodingOption(
+ const QString &codec, const QString &name, const QVariant &value)
+{
+ m_options[codec][name] = value;
+}
+
+QList<int> QGstreamerAudioEncode::supportedSampleRates(const QAudioEncoderSettings &, bool *) const
+{
+ //TODO check element caps to find actual values
+
+ return QList<int>();
+}
+
+QAudioEncoderSettings QGstreamerAudioEncode::audioSettings() const
+{
+ return m_audioSettings;
+}
+
+void QGstreamerAudioEncode::setAudioSettings(const QAudioEncoderSettings &settings)
+{
+ m_audioSettings = settings;
+}
+
+
+
+GstElement *QGstreamerAudioEncode::createEncoder()
+{
+ QString codec = m_audioSettings.codec();
+
+ GstBin * encoderBin = GST_BIN(gst_bin_new("audio-encoder-bin"));
+ Q_ASSERT(encoderBin);
+
+ GstElement *capsFilter = gst_element_factory_make("capsfilter", NULL);
+ GstElement *encoderElement = gst_element_factory_make(m_elementNames.value(codec).constData(), NULL);
+
+ Q_ASSERT(encoderElement);
+
+ gst_bin_add(encoderBin, capsFilter);
+ gst_bin_add(encoderBin, encoderElement);
+ gst_element_link(capsFilter, encoderElement);
+
+ // 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 (m_audioSettings.sampleRate() > 0 || m_audioSettings.channelCount() > 0) {
+ GstCaps *caps = gst_caps_new_empty();
+ GstStructure *structure = gst_structure_new("audio/x-raw-int", NULL);
+
+ if (m_audioSettings.sampleRate() > 0)
+ gst_structure_set(structure, "rate", G_TYPE_INT, m_audioSettings.sampleRate(), NULL );
+
+ if (m_audioSettings.channelCount() > 0)
+ gst_structure_set(structure, "channels", G_TYPE_INT, m_audioSettings.channelCount(), NULL );
+
+ gst_caps_append_structure(caps,structure);
+
+ //qDebug() << "set caps filter:" << gst_caps_to_string(caps);
+
+ g_object_set(G_OBJECT(capsFilter), "caps", caps, NULL);
+ }
+
+ if (encoderElement) {
+ if (m_audioSettings.encodingMode() == QtMultimediaKit::ConstantQualityEncoding) {
+ QtMultimediaKit::EncodingQuality qualityValue = m_audioSettings.quality();
+
+ if (codec == QLatin1String("audio/vorbis")) {
+ double qualityTable[] = {
+ 0.1, //VeryLow
+ 0.3, //Low
+ 0.5, //Normal
+ 0.7, //High
+ 1.0 //VeryHigh
+ };
+ g_object_set(G_OBJECT(encoderElement), "quality", qualityTable[qualityValue], NULL);
+ } else if (codec == QLatin1String("audio/mpeg")) {
+ g_object_set(G_OBJECT(encoderElement), "target", 0, NULL); //constant quality mode
+ qreal quality[] = {
+ 1, //VeryLow
+ 3, //Low
+ 5, //Normal
+ 7, //High
+ 9 //VeryHigh
+ };
+ g_object_set(G_OBJECT(encoderElement), "quality", quality[qualityValue], NULL);
+ } else if (codec == QLatin1String("audio/speex")) {
+ //0-10 range with default 8
+ double qualityTable[] = {
+ 2, //VeryLow
+ 5, //Low
+ 8, //Normal
+ 9, //High
+ 10 //VeryHigh
+ };
+ g_object_set(G_OBJECT(encoderElement), "quality", qualityTable[qualityValue], NULL);
+ } else if (codec.startsWith("audio/AMR")) {
+ int band[] = {
+ 0, //VeryLow
+ 2, //Low
+ 4, //Normal
+ 6, //High
+ 7 //VeryHigh
+ };
+
+ g_object_set(G_OBJECT(encoderElement), "band-mode", band[qualityValue], NULL);
+ }
+ } else {
+ int bitrate = m_audioSettings.bitRate();
+ if (bitrate > 0) {
+ if (codec == QLatin1String("audio/mpeg")) {
+ g_object_set(G_OBJECT(encoderElement), "target", 1, NULL); //constant bitrate mode
+ }
+ 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 GST_ELEMENT(encoderBin);
+}
+
+
+QSet<QString> QGstreamerAudioEncode::supportedStreamTypes(const QString &codecName) const
+{
+ return m_streamTypes.value(codecName);
+}