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videoformatfpsmodel.cpp 6.28 KiB
/*
* 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);
}
}