tempo-plotter Changeset - 6b14ef397a98 · protofusion repositories

Changeset - 6b14ef397a98

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gain-offset

0 4 0

Hasan Yavuz ÖZDERYA - 7 years ago 2018-07-22 08:34:09
hy@ozderya.net

some optimization for when no gain or offset is enabled

4 files changed with 81 insertions and 31 deletions:

src/channelinfomodel.cpp

src/channelinfomodel.h

src/stream.cpp

src/stream.h

0 comments (0 inline, 0 general)

src/channelinfomodel.cpp

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 /*
   Copyright © 2018 Hasan Yavuz Özderya
   This file is part of serialplot.
   serialplot is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
   serialplot is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "channelinfomodel.h"
 #include "setting_defines.h"
 #define NUMOF_COLORS  (32)
 const QColor colors[NUMOF_COLORS] =
+{
     QColor("#ff0056"),
     QColor("#7e2dd2"),
     QColor("#00ae7e"),
     QColor("#fe8900"),
     QColor("#ff937e"),
     QColor("#6a826c"),
     QColor("#ff029d"),
     QColor("#00b917"),
     QColor("#7a4782"),
     QColor("#85a900"),
     QColor("#a42400"),
     QColor("#683d3b"),
     QColor("#bdc6ff"),
     QColor("#263400"),
     QColor("#bdd393"),
     QColor("#d5ff00"),
     QColor("#9e008e"),
     QColor("#001544"),
     QColor("#c28c9f"),
     QColor("#ff74a3"),
     QColor("#01d0ff"),
     QColor("#004754"),
     QColor("#e56ffe"),
     QColor("#788231"),
     QColor("#0e4ca1"),
     QColor("#91d0cb"),
     QColor("#be9970"),
     QColor("#968ae8"),
     QColor("#bb8800"),
     QColor("#43002c"),
     QColor("#deff74"),
     QColor("#00ffc6")
 };
 ChannelInfoModel::ChannelInfoModel(unsigned numberOfChannels, QObject* parent) :
     QAbstractTableModel(parent)
+{
     _numOfChannels = 0;
     setNumOfChannels(numberOfChannels);
+}
 ChannelInfoModel::ChannelInfoModel(const ChannelInfoModel& other) :
     ChannelInfoModel(other.rowCount(), other.parent())
+{
     // TODO: why not set (copy) info list directly instead?
     for (int i = 0; i < other.rowCount(); i++)
+    {
         setData(index(i, COLUMN_NAME),
                 other.data(other.index(i, COLUMN_NAME), Qt::EditRole),
                 Qt::EditRole);
         setData(index(i, COLUMN_NAME),
                 other.data(other.index(i, COLUMN_NAME), Qt::ForegroundRole),
                 Qt::ForegroundRole);
         setData(index(i, COLUMN_VISIBILITY),
                 other.data(other.index(i, COLUMN_VISIBILITY), Qt::CheckStateRole),
                 Qt::CheckStateRole);
         // TODO: gain and offset
         setData(index(i, COLUMN_GAIN),
                 other.data(other.index(i, COLUMN_GAIN), Qt::CheckStateRole),
                 Qt::CheckStateRole);
         setData(index(i, COLUMN_GAIN),
                 other.data(other.index(i, COLUMN_GAIN), Qt::EditRole),
                 Qt::EditRole);
         setData(index(i, COLUMN_OFFSET),
                 other.data(other.index(i, COLUMN_OFFSET), Qt::CheckStateRole),
                 Qt::CheckStateRole);
         setData(index(i, COLUMN_OFFSET),
                 other.data(other.index(i, COLUMN_OFFSET), Qt::EditRole),
                 Qt::EditRole);
+    }
+}
 ChannelInfoModel::ChannelInfoModel(const QStringList& channelNames) :
     ChannelInfoModel(channelNames.length(), NULL)
+{
     for (int i = 0; i < channelNames.length(); i++)
+    {
         setData(index(i, COLUMN_NAME), channelNames[i], Qt::EditRole);
+    }
+}
 ChannelInfoModel::ChannelInfo::ChannelInfo(unsigned index)
+{
     name = tr("Channel %1").arg(index + 1);
     visibility = true;
     color = colors[index % NUMOF_COLORS];
     gain = 1.0;
     offset = 0.0;
     gainEn = false;
     offsetEn = false;
+}
 QString ChannelInfoModel::name(unsigned i) const
+{
     return infos[i].name;
+}
 QColor ChannelInfoModel::color(unsigned i) const
+{
     return infos[i].color;
+}
 bool ChannelInfoModel::isVisible(unsigned i) const
+{
     return infos[i].visibility;
+}
 bool ChannelInfoModel::gainEn (unsigned i) const
+{
     return infos[i].gainEn;
+}
 double ChannelInfoModel::gain (unsigned i) const
+{
     return infos[i].gain;
+}
 bool ChannelInfoModel::offsetEn (unsigned i) const
+{
     return infos[i].offsetEn;
+}
 double ChannelInfoModel::offset (unsigned i) const
+{
     return infos[i].offset;
+}
 QStringList ChannelInfoModel::channelNames() const
+{
     QStringList r;
     for (unsigned ci = 0; ci < _numOfChannels; ci++)
+    {
         r << name(ci);
+    }
     return r;
+}
 int ChannelInfoModel::rowCount(const QModelIndex &parent) const
+{
     return _numOfChannels;
+}
 int ChannelInfoModel::columnCount(const QModelIndex & parent) const
+{
     return COLUMN_COUNT;
+}
 Qt::ItemFlags ChannelInfoModel::flags(const QModelIndex &index) const
+{
     if (index.column() == COLUMN_NAME)
+    {
         return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemNeverHasChildren | Qt::ItemIsSelectable;
+    }
     else if (index.column() == COLUMN_VISIBILITY)
+    {
         return Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemNeverHasChildren | Qt::ItemIsSelectable;
+    }
     else if (index.column() == COLUMN_GAIN || index.column() == COLUMN_OFFSET)
+    {
         return Qt::ItemIsEditable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemNeverHasChildren | Qt::ItemIsSelectable;
+    }
     return Qt::NoItemFlags;
+}
 QVariant ChannelInfoModel::data(const QModelIndex &index, int role) const
+{
     // check index
     if (index.row() >= (int) _numOfChannels || index.row() < 0)
+    {
         return QVariant();
+    }
     auto &info = infos[index.row()];
     // get color
     if (role == Qt::ForegroundRole)
+    {
         return info.color;
+    }
     // name
     if (index.column() == COLUMN_NAME)
+    {
         if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             return QVariant(info.name);
+        }
     } // visibility
     else if (index.column() == COLUMN_VISIBILITY)
+    {
         if (role == Qt::CheckStateRole)
+        {
             bool visible = info.visibility;
             return visible ? Qt::Checked : Qt::Unchecked;
+        }
     } // gain
     else if (index.column() == COLUMN_GAIN)
+    {
         if (role == Qt::CheckStateRole)
+        {
             return info.gainEn ? Qt::Checked : Qt::Unchecked;
+        }
         else if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             return QVariant(info.gain);
+        }
     } // offset
     else if (index.column() == COLUMN_OFFSET)
+    {
         if (role == Qt::CheckStateRole)
+        {
             return info.offsetEn ? Qt::Checked : Qt::Unchecked;
+        }
         else if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             return QVariant(info.offset);
+        }
+    }
     return QVariant();
+}
 QVariant ChannelInfoModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
     if (orientation == Qt::Horizontal)
+    {
         if (role == Qt::DisplayRole)
+        {
             if (section == COLUMN_NAME)
+            {
                 return tr("Channel");
+            }
             else if (section == COLUMN_VISIBILITY)
+            {
                 return tr("Visible");
+            }
             else if (section == COLUMN_GAIN)
+            {
                 return tr("Gain");
+            }
             else if (section == COLUMN_OFFSET)
+            {
                 return tr("Offset");
+            }
+        }
+    }
     else                        // vertical
+    {
         if (section < (int) _numOfChannels && role == Qt::DisplayRole)
+        {
             return QString::number(section + 1);
+        }
+    }
     return QVariant();
+}
 bool ChannelInfoModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
     // check index
     if (index.row() >= (int) _numOfChannels || index.row() < 0)
+    {
         return false;
+    }
     auto &info = infos[index.row()];
     // set color
     if (role == Qt::ForegroundRole)
+    {
         info.color = value.value<QColor>();
         emit dataChanged(index, index, QVector<int>({Qt::ForegroundRole}));
         return true;
+    }
     // set name
     bool r = false;
     if (index.column() == COLUMN_NAME)
+    {
         if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             info.name = value.toString();
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             r = true;
+        }
     } // set visibility
     else if (index.column() == COLUMN_VISIBILITY)
+    {
         if (role == Qt::CheckStateRole)
+        {
             bool checked = value.toInt() == Qt::Checked;
             info.visibility = checked;
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             r = true;
+        }
+    }
     else if (index.column() == COLUMN_GAIN)
+    {
         if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             info.gain = value.toDouble();
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             r = true;
+        }
         else if (role == Qt::CheckStateRole)
+        {
             bool checked = value.toInt() == Qt::Checked;
             info.gainEn = checked;
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             if (_gainOrOffsetEn != checked) updateGainOrOffsetEn();
             r = true;
+        }
+    }
     else if (index.column() == COLUMN_OFFSET)
+    {
         if (role == Qt::DisplayRole || role == Qt::EditRole)
+        {
             info.offset = value.toDouble();
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             r = true;
+        }
         else if (role == Qt::CheckStateRole)
+        {
             bool checked = value.toInt() == Qt::Checked;
             info.offsetEn = checked;
             emit dataChanged(index, index, QVector<int>({role}));
             return true;
             if (_gainOrOffsetEn != checked) updateGainOrOffsetEn();
             r = true;
+        }
+    }
     // invalid index/role
     return false;
     if (r)
+    {
         emit dataChanged(index, index, QVector<int>({role}));
+    }
     return r;
+}
 void ChannelInfoModel::setNumOfChannels(unsigned number)
+{
     if (number == _numOfChannels) return;
     bool isInserting = number > _numOfChannels;
     if (isInserting)
+    {
         beginInsertRows(QModelIndex(), _numOfChannels, number-1);
+    }
     else
+    {
         beginRemoveRows(QModelIndex(), number, _numOfChannels-1);
+    }
     // we create channel info but never remove channel info to
     // remember user entered info
     if ((int) number > infos.length())
+    {
         for (unsigned ci = infos.length(); ci < number; ci++)
+        {
             infos.append(ChannelInfo(ci));
+        }
+    }
     // make sure newly available channels are visible, we don't
     // remember visibility option intentionally so that user doesn't
     // get confused
     if (number > _numOfChannels)
+    {
         for (unsigned ci = _numOfChannels; ci < number; ci++)
+        {
             infos[ci].visibility = true;
+        }
+    }
     _numOfChannels = number;
     updateGainOrOffsetEn();
     if (isInserting)
+    {
         endInsertRows();
+    }
     else
+    {
         endRemoveRows();
+    }
+}
 void ChannelInfoModel::resetInfos()
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         infos[ci] = ChannelInfo(ci);
+    }
     endResetModel();
+}
 // TODO: fix repetitive code, ChannelInfoModel::reset* functions
 void ChannelInfoModel::resetNames()
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         // TODO: do not create a full object every time (applies to other reset methods as well)
         infos[ci].name = ChannelInfo(ci).name;
+    }
     endResetModel();
+}
 void ChannelInfoModel::resetColors()
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         infos[ci].color = ChannelInfo(ci).color;
+    }
     endResetModel();
+}
 void ChannelInfoModel::resetVisibility(bool visible)
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         infos[ci].visibility = visible;
+    }
     endResetModel();
+}
 void ChannelInfoModel::resetGains()
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         infos[ci].gain = ChannelInfo(ci).gain;
         infos[ci].gainEn = ChannelInfo(ci).gainEn;
+    }
     updateGainOrOffsetEn();
     endResetModel();
+}
 void ChannelInfoModel::resetOffsets()
+{
     beginResetModel();
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         infos[ci].offset = ChannelInfo(ci).offset;
         infos[ci].offsetEn = ChannelInfo(ci).offsetEn;
+    }
     updateGainOrOffsetEn();
     endResetModel();
+}
 bool ChannelInfoModel::gainOrOffsetEn() const
+{
     return _gainOrOffsetEn;
+}
 void ChannelInfoModel::updateGainOrOffsetEn()
+{
     _gainOrOffsetEn = false;
     for (int ci = 0; ci < _numOfChannels; ci++)
+    {
         auto& info = infos[ci];
         _gainOrOffsetEn |= (info.gainEn || info.offsetEn);
+    }
+}
 void ChannelInfoModel::saveSettings(QSettings* settings) const
+{
     settings->beginGroup(SettingGroup_Channels);
     settings->beginWriteArray(SG_Channels_Channel);
     // save all channel information regardless of current number of channels
     for (unsigned ci = 0; (int) ci < infos.length(); ci++)
+    {
         settings->setArrayIndex(ci);
         auto& info = infos[ci];
         settings->setValue(SG_Channels_Name, info.name);
         settings->setValue(SG_Channels_Color, info.color);
         settings->setValue(SG_Channels_Visible, info.visibility);
         settings->setValue(SG_Channels_Gain, info.gain);
         settings->setValue(SG_Channels_GainEn, info.gainEn);
         settings->setValue(SG_Channels_Offset, info.offset);
         settings->setValue(SG_Channels_OffsetEn, info.offsetEn);
+    }
     settings->endArray();
     settings->endGroup();
+}
 void ChannelInfoModel::loadSettings(QSettings* settings)
+{
     settings->beginGroup(SettingGroup_Channels);
     unsigned size = settings->beginReadArray(SG_Channels_Channel);
     for (unsigned ci = 0; ci < size; ci++)
+    {
         settings->setArrayIndex(ci);
         ChannelInfo chanInfo(ci);
         chanInfo.name       = settings->value(SG_Channels_Name     , chanInfo.name).toString();
         chanInfo.color      = settings->value(SG_Channels_Color    , chanInfo.color).value<QColor>();
         chanInfo.visibility = settings->value(SG_Channels_Visible  , chanInfo.visibility).toBool();
         chanInfo.gain       = settings->value(SG_Channels_Gain     , chanInfo.gain).toDouble();
         chanInfo.gainEn     = settings->value(SG_Channels_GainEn   , chanInfo.gainEn).toBool();
         chanInfo.offset     = settings->value(SG_Channels_Offset   , chanInfo.offset).toDouble();
         chanInfo.offsetEn   = settings->value(SG_Channels_OffsetEn , chanInfo.offsetEn).toBool();
         if ((int) ci < infos.size())
+        {
             infos[ci] = chanInfo;
             if (ci < _numOfChannels)
+            {
                 auto roles = QVector<int>({
                     Qt::DisplayRole, Qt::EditRole, Qt::ForegroundRole, Qt::CheckStateRole});
                 emit dataChanged(index(ci, 0), index(ci, COLUMN_COUNT-1), roles);
+            }
+        }
         else
+        {
             infos.append(chanInfo);
+        }
+    }
     updateGainOrOffsetEn();
     settings->endArray();
     settings->endGroup();
+}

src/channelinfomodel.h

➞

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 /*
   Copyright © 2018 Hasan Yavuz Özderya
   This file is part of serialplot.
   serialplot is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
   serialplot is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 #ifndef CHANNELINFOMODEL_H
 #define CHANNELINFOMODEL_H
 #include <QAbstractTableModel>
 #include <QColor>
 #include <QSettings>
 #include <QStringList>
 class ChannelInfoModel : public QAbstractTableModel
+{
     Q_OBJECT
 public:
     enum ChannelInfoColumn
+    {
         COLUMN_NAME = 0,
         COLUMN_VISIBILITY,
         COLUMN_GAIN,
         COLUMN_OFFSET,
         COLUMN_COUNT            // MUST be last
     };
     explicit ChannelInfoModel(unsigned numberOfChannels, QObject *parent = 0);
     ChannelInfoModel(const ChannelInfoModel& other);
     explicit ChannelInfoModel(const QStringList& channelNames);
     QString name     (unsigned i) const;
     QColor  color    (unsigned i) const;
     bool    isVisible(unsigned i) const;
     bool    gainEn   (unsigned i) const;
     double  gain     (unsigned i) const;
     bool    offsetEn (unsigned i) const;
     double  offset   (unsigned i) const;
     /// Returns true if any of the channels have gain or offset enabled
     bool gainOrOffsetEn() const;
     /// Returns a list of channel names
     QStringList channelNames() const;
     // implemented from QAbstractItemModel
     int           rowCount(const QModelIndex &parent = QModelIndex()) const;
     int           columnCount(const QModelIndex &parent = QModelIndex()) const;
     QVariant      data(const QModelIndex &index, int role = Qt::DisplayRole) const;
     bool          setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
     Qt::ItemFlags flags(const QModelIndex &index) const;
     QVariant      headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
     void setNumOfChannels(unsigned number);
     /// Stores all channel info into a `QSettings`
     void saveSettings(QSettings* settings) const;
     /// Loads all channel info from a `QSettings`.
     void loadSettings(QSettings* settings);
 public slots:
     /// reset all channel info (names, color etc.)
     void resetInfos();
     /// reset all channel names
     void resetNames();
     /// reset all channel colors
     void resetColors();
     /// reset all channel gain values and disables gains
     void resetGains();
     /// reset all channel offset values and disables offsets
     void resetOffsets();
     /// reset visibility
     void resetVisibility(bool visible);
 private:
     struct ChannelInfo
+    {
         explicit ChannelInfo(unsigned index);
         QString name;
         bool visibility;
         QColor color;
         double gain, offset;
         bool gainEn, offsetEn;
     };
     unsigned _numOfChannels;     ///< @note this is not necessarily the length of `infos`
     /**
      * Channel info is added here but never removed so that we can
      * remember user entered info (names, colors etc.).
      */
     QList<ChannelInfo> infos;
     /**
      * Cache for gain and offset enabled variables of channels. If gain and/or
      * offset is not enabled for *any* of the channels this is false otherwise
      * true.
      */
     bool _gainOrOffsetEn;
     /// Updates `_gainOrOffsetEn` by scanning all channel infos.
     void updateGainOrOffsetEn();
 };
 #endif // CHANNELINFOMODEL_H

src/stream.cpp

➞

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 /*
   Copyright © 2018 Hasan Yavuz Özderya
   This file is part of serialplot.
   serialplot is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
   serialplot is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "stream.h"
 #include "ringbuffer.h"
 #include "indexbuffer.h"
 Stream::Stream(unsigned nc, bool x, unsigned ns) :
     _infoModel(nc)
+{
     _numSamples = ns;
     _paused = false;
     // create xdata buffer
     _hasx = x;
     if (x)
+    {
         xData = new RingBuffer(ns);
+    }
     else
+    {
         xData = new IndexBuffer(ns);
+    }
     // create channels
     for (unsigned i = 0; i < nc; i++)
+    {
         auto c = new StreamChannel(i, xData, new RingBuffer(ns), &_infoModel);
         channels.append(c);
+    }
+}
 Stream::~Stream()
+{
     for (auto ch : channels)
+    {
         delete ch;
+    }
     delete xData;
+}
 bool Stream::hasX() const
+{
     return _hasx;
+}
 unsigned Stream::numChannels() const
+{
     return channels.length();
+}
 unsigned Stream::numSamples() const
+{
     return _numSamples;
+}
 const StreamChannel* Stream::channel(unsigned index) const
+{
     Q_ASSERT(index < numChannels());
     return channels[index];
+}
 StreamChannel* Stream::channel(unsigned index)
+{
     return const_cast<StreamChannel*>(static_cast<const Stream&>(*this).channel(index));
+}
 const ChannelInfoModel* Stream::infoModel() const
+{
     return &_infoModel;
+}
 ChannelInfoModel* Stream::infoModel()
+{
     return const_cast<ChannelInfoModel*>(static_cast<const Stream&>(*this).infoModel());
+}
 void Stream::setNumChannels(unsigned nc, bool x)
+{
     unsigned oldNum = numChannels();
     if (oldNum == nc && x == _hasx) return;
     // adjust the number of channels
     if (nc > oldNum)
+    {
         for (unsigned i = oldNum; i < nc; i++)
+        {
             auto c = new StreamChannel(i, xData, new RingBuffer(_numSamples), &_infoModel);
             channels.append(c);
+        }
+    }
     else if (nc < oldNum)
+    {
         for (unsigned i = oldNum-1; i > nc-1; i--)
+        {
             delete channels.takeLast();
+        }
+    }
     // change the xdata
     if (x != _hasx)
+    {
         if (x)
+        {
             xData = new RingBuffer(_numSamples);
+        }
         else
+        {
             xData = new IndexBuffer(_numSamples);
+        }
         for (auto c : channels)
+        {
             c->setX(xData);
+        }
         _hasx = x;
+    }
     if (nc != oldNum)
+    {
         _infoModel.setNumOfChannels(nc);
         // TODO: how about X change?
         emit numChannelsChanged(nc);
+    }
     Sink::setNumChannels(nc, x);
+}
 const SamplePack* Stream::applyGainOffset(const SamplePack& pack) const
+{
     SamplePack* mPack = nullptr;
     Q_ASSERT(infoModel()->gainOrOffsetEn());
     SamplePack* mPack = new SamplePack(pack);
     unsigned ns = pack.numSamples();
     for (unsigned ci = 0; ci < numChannels(); ci++)
+    {
         bool gainEn = channels[ci]->info()->gainEn(ci);
         bool offsetEn = channels[ci]->info()->offsetEn(ci);
         double* mdata;
         // TODO: we could use some kind of map (int32, int64 would suffice) to speed things up
         bool gainEn = infoModel()->gainEn(ci);
         bool offsetEn = infoModel()->offsetEn(ci);
         if (gainEn || offsetEn)
+        {
             if (mPack == nullptr)
                 mPack = new SamplePack(pack);
             double* mdata = mPack->data(ci);
             mdata = mPack->data(ci);
             double gain = channels[ci]->info()->gain(ci);
             double offset = channels[ci]->info()->offset(ci);
             double gain = infoModel()->gain(ci);
             double offset = infoModel()->offset(ci);
             if (gainEn)
+            {
                 for (unsigned i = 0; i < ns; i++)
+                {
                     mdata[i] *= gain;
+                }
+            }
             if (offsetEn)
+            {
                 for (unsigned i = 0; i < ns; i++)
+                {
                     mdata[i] += offset;
+                }
+            }
+        }
+    }
     return mPack;
+}
 void Stream::feedIn(const SamplePack& pack)
+{
     Q_ASSERT(pack.numChannels() == numChannels() &&
              pack.hasX() == hasX());
     if (_paused) return;
     unsigned ns = pack.numSamples();
     if (_hasx)
+    {
         static_cast<RingBuffer*>(xData)->addSamples(pack.xData(), ns);
+    }
     // modified pack that gain and offset is applied to
     const SamplePack* mPack = applyGainOffset(pack);
     const SamplePack* mPack = nullptr;
     if (infoModel()->gainOrOffsetEn())
         mPack = applyGainOffset(pack);
     for (unsigned ci = 0; ci < numChannels(); ci++)
+    {
         auto buf = static_cast<RingBuffer*>(channels[ci]->yData());
         double* data = (mPack == nullptr) ? pack.data(ci) : mPack->data(ci);
         buf->addSamples(data, ns);
+    }
     Sink::feedIn((mPack == nullptr) ? pack : *mPack);
     if (mPack != nullptr) delete mPack;
     emit dataAdded();
+}
 void Stream::pause(bool paused)
+{
     _paused = paused;
+}
 void Stream::clear()
+{
     for (auto c : channels)
+    {
         static_cast<RingBuffer*>(c->yData())->clear();
+    }
+}
 void Stream::setNumSamples(unsigned value)
+{
     if (value == _numSamples) return;
     _numSamples = value;
     xData->resize(value);
     for (auto c : channels)
+    {
         static_cast<RingBuffer*>(c->yData())->resize(value);
+    }
+}
 void Stream::saveSettings(QSettings* settings) const
+{
     _infoModel.saveSettings(settings);
+}
 void Stream::loadSettings(QSettings* settings)
+{
     _infoModel.loadSettings(settings);
+}

src/stream.h

➞

Show inline comments

 /*
   Copyright © 2018 Hasan Yavuz Özderya
   This file is part of serialplot.
   serialplot is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
   serialplot is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 */
 #ifndef STREAM_H
 #define STREAM_H
 #include <QObject>
 #include <QModelIndex>
 #include <QVector>
 #include <QSettings>
 #include "sink.h"
 #include "source.h"
 #include "channelinfomodel.h"
 #include "streamchannel.h"
 #include "framebuffer.h"
 /**
  * Main waveform storage class. It consists of channels. Channels are
  * synchronized with each other.
+ *
  * Implements `Sink` class for data entry. It's expected to be
  * connected to a `Device` source.
  */
 class Stream : public QObject, public Sink
+{
     Q_OBJECT
 public:
     /**
      * @param nc number of channels
      * @param x has X data input
      * @param ns number of samples
      */
     Stream(unsigned nc = 0, bool x = false, unsigned ns = 0);
     ~Stream();
     // implementations for `Source`
     virtual bool hasX() const;
     virtual unsigned numChannels() const;
     unsigned numSamples() const;
     const StreamChannel* channel(unsigned index) const;
     StreamChannel* channel(unsigned index);
     const ChannelInfoModel* infoModel() const;
     ChannelInfoModel* infoModel();
     /// Saves channel information
     void saveSettings(QSettings* settings) const;
     /// Load channel information
     void loadSettings(QSettings* settings);
 protected:
     // implementations for `Sink`
     virtual void setNumChannels(unsigned nc, bool x);
     virtual void feedIn(const SamplePack& pack);
 signals:
     void numChannelsChanged(unsigned value);
     void numSamplesChanged(unsigned value);
     void channelAdded(const StreamChannel* chan);
     void channelNameChanged(unsigned channel, QString name); // TODO: does it stay?
     void dataAdded(); ///< emitted when data added to channel man.
 public slots:
     // TODO: these won't be public
     // void setNumChannels(unsigned number);
     void setNumSamples(unsigned value);
     /// When paused data feed is ignored
     void pause(bool paused);
     /// Clears buffer data (fills with 0)
     void clear();
 private:
     unsigned _numSamples;
     bool _paused;
     bool _hasx;
     ResizableBuffer* xData;
     QList<StreamChannel*> channels;
     ChannelInfoModel _infoModel;
     /**
      * Applies gain and offset to given pack.
+     *
      * If gain or offset isn't enabled this function returns `nullptr`. If gain
      * or offset is enabled for at least 1 channel input pack is copied and
      * modified. Result is returned. Caller is responsible for deleting
      * returned `SamplePack`.
      * Caller is responsible for deleting returned `SamplePack`.
+     *
      * @note Should be called only when gain or offset is enabled. Guard with
      * `ChannelInfoModel::gainOrOffsetEn()`.
+     *
      * @param pack input data
-     * @return `nullptr` if no gain or offset is enabled otherwise modified data
      * @return modified data
      */
     const SamplePack* applyGainOffset(const SamplePack& pack) const;
 };
 #endif // STREAM_H

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