| /* |
| * Copyright (C) 2019-2020 by Savoir-faire Linux |
| * Author: Yang Wang <yang.wang@savoirfairelinux.com> |
| * |
| * This program 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. |
| * |
| * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "videoformatfpsmodel.h" |
| |
| VideoFormatFpsModel::VideoFormatFpsModel(QObject *parent) |
| : QAbstractListModel(parent) |
| { |
| try { |
| QString currentDeviceId = LRCInstance::avModel().getCurrentVideoCaptureDevice(); |
| auto currentSettings = LRCInstance::avModel().getDeviceSettings(currentDeviceId); |
| currentResolution_ = currentSettings.size; |
| } catch (const std::exception &e) { |
| qWarning() << "Constructor of VideoFormatFpsModel, exception: " << e.what(); |
| } |
| } |
| |
| VideoFormatFpsModel::~VideoFormatFpsModel() {} |
| |
| int |
| VideoFormatFpsModel::rowCount(const QModelIndex &parent) const |
| { |
| if (!parent.isValid()) { |
| /* |
| * Count. |
| */ |
| QString currentDeviceId = LRCInstance::avModel().getCurrentVideoCaptureDevice(); |
| auto deviceCapabilities = LRCInstance::avModel().getDeviceCapabilities(currentDeviceId); |
| if (deviceCapabilities.size() == 0) { |
| return 0; |
| } |
| try { |
| auto currentSettings = LRCInstance::avModel().getDeviceSettings(currentDeviceId); |
| auto currentChannel = currentSettings.channel; |
| currentChannel = currentChannel.isEmpty() ? "default" : currentChannel; |
| auto channelCaps = deviceCapabilities[currentChannel]; |
| |
| bool resolutionFound = false; |
| int indexOfCurrentResolutionInResRateList = 0; |
| |
| for (int i = 0; i < channelCaps.size(); i++) { |
| if (channelCaps[i].first == currentResolution_) { |
| indexOfCurrentResolutionInResRateList = i; |
| resolutionFound = true; |
| break; |
| } |
| } |
| |
| if (resolutionFound) { |
| auto fpsList = channelCaps[indexOfCurrentResolutionInResRateList].second; |
| return fpsList.size(); |
| } |
| } catch (const std::exception &e) { |
| qWarning() << e.what(); |
| } |
| return 0; |
| } |
| /* |
| * A valid QModelIndex returns 0 as no entry has sub-elements. |
| */ |
| return 0; |
| } |
| |
| int |
| VideoFormatFpsModel::columnCount(const QModelIndex &parent) const |
| { |
| Q_UNUSED(parent); |
| /* |
| * Only need one column. |
| */ |
| return 1; |
| } |
| |
| QVariant |
| VideoFormatFpsModel::data(const QModelIndex &index, int role) const |
| { |
| try { |
| QString currentDeviceId = LRCInstance::avModel().getCurrentVideoCaptureDevice(); |
| auto deviceCapabilities = LRCInstance::avModel().getDeviceCapabilities(currentDeviceId); |
| |
| auto currentSettings = LRCInstance::avModel().getDeviceSettings(currentDeviceId); |
| auto currentChannel = currentSettings.channel; |
| currentChannel = currentChannel.isEmpty() ? "default" : currentChannel; |
| auto channelCaps = deviceCapabilities[currentChannel]; |
| |
| bool resolutionFound = false; |
| int indexOfCurrentResolutionInResRateList = 0; |
| |
| for (int i = 0; i < channelCaps.size(); i++) { |
| if (channelCaps[i].first == currentResolution_) { |
| indexOfCurrentResolutionInResRateList = i; |
| resolutionFound = true; |
| break; |
| } |
| } |
| |
| if (!index.isValid() || channelCaps.size() <= index.row() || deviceCapabilities.size() == 0 |
| || !resolutionFound) { |
| return QVariant(); |
| } |
| |
| auto fpsList = channelCaps[indexOfCurrentResolutionInResRateList].second; |
| |
| switch (role) { |
| case Role::FPS: |
| return QVariant(fpsList[index.row()]); |
| case Role::FPS_ToDisplay_UTF8: |
| QString rateDisplayUtf8 = QString("%1 fps").arg((int) fpsList[index.row()]); |
| return QVariant(rateDisplayUtf8.toUtf8()); |
| } |
| |
| } catch (const std::exception &e) { |
| qWarning() << e.what(); |
| } |
| |
| return QVariant(); |
| } |
| |
| QHash<int, QByteArray> |
| VideoFormatFpsModel::roleNames() const |
| { |
| QHash<int, QByteArray> roles; |
| roles[FPS] = "FPS"; |
| roles[FPS_ToDisplay_UTF8] = "FPS_ToDisplay_UTF8"; |
| return roles; |
| } |
| |
| QModelIndex |
| VideoFormatFpsModel::index(int row, int column, const QModelIndex &parent) const |
| { |
| Q_UNUSED(parent); |
| if (column != 0) { |
| return QModelIndex(); |
| } |
| |
| if (row >= 0 && row < rowCount()) { |
| return createIndex(row, column); |
| } |
| return QModelIndex(); |
| } |
| |
| QModelIndex |
| VideoFormatFpsModel::parent(const QModelIndex &child) const |
| { |
| Q_UNUSED(child); |
| return QModelIndex(); |
| } |
| |
| Qt::ItemFlags |
| VideoFormatFpsModel::flags(const QModelIndex &index) const |
| { |
| auto flags = QAbstractItemModel::flags(index) | Qt::ItemNeverHasChildren | Qt::ItemIsSelectable; |
| if (!index.isValid()) { |
| return QAbstractItemModel::flags(index); |
| } |
| return flags; |
| } |
| |
| void |
| VideoFormatFpsModel::reset() |
| { |
| beginResetModel(); |
| endResetModel(); |
| } |
| |
| int |
| VideoFormatFpsModel::getCurrentSettingIndex() |
| { |
| int resultRowIndex = 0; |
| try { |
| QString currentDeviceId = LRCInstance::avModel().getCurrentVideoCaptureDevice(); |
| auto currentSettings = LRCInstance::avModel().getDeviceSettings(currentDeviceId); |
| float currentFps = currentSettings.rate; |
| auto resultList = match(index(0, 0), FPS, QVariant(currentFps)); |
| |
| if (resultList.size() > 0) { |
| resultRowIndex = resultList[0].row(); |
| } |
| |
| } catch (const std::exception &e) { |
| qWarning() << e.what(); |
| } |
| |
| return resultRowIndex; |
| } |
| |
| QString |
| VideoFormatFpsModel::getCurrentResolution() |
| { |
| return currentResolution_; |
| } |
| |
| void |
| VideoFormatFpsModel::setCurrentResolution(QString resNew) |
| { |
| if (currentResolution_ != resNew) { |
| currentResolution_ = resNew; |
| reset(); |
| emit currentResolutionChanged(resNew); |
| } |
| } |