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/*
SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter@kde.org>
SPDX-FileCopyrightText: 2018 David Rosca <nowrep@gmail.com>
SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#pragma once
#include <QHash>
#include <QObject>
#include <QSet>
#include <QVector>
#include <pulse/ext-stream-restore.h>
#include <pulse/pulseaudio.h>
#include "card_p.h"
#include "client_p.h"
#include "module_p.h"
#include "sink_p.h"
#include "sinkinput_p.h"
#include "source_p.h"
#include "sourceoutput_p.h"
#include "streamrestore_p.h"
namespace PulseAudioQt
{
// Used for typedefs.
class Card;
class Client;
class Sink;
class SinkInput;
class Source;
class SourceOutput;
class StreamRestore;
class Module;
/**
* @see MapBase
* This class is nothing more than the QObject base since moc cannot handle
* templates.
*/
class MapBaseQObject : public QObject
{
Q_OBJECT
public:
virtual int count() const = 0;
virtual QObject *objectAt(int index) const = 0;
virtual int indexOfObject(QObject *object) const = 0;
Q_SIGNALS:
void aboutToBeAdded(int index);
void added(int index, QObject *object);
void aboutToBeRemoved(int index);
void removed(int index, QObject *object);
};
/**
* Maps a specific index to a specific object pointer.
* This is used to give the unique arbitrary PulseAudio index of a PulseObject a
* serialized list index. Namely it enables us to translate a discrete list
* index to a pulse index to an object, and any permutation thereof.
*/
template<typename Type, typename PAInfo>
class MapBase : public MapBaseQObject
{
public:
virtual ~MapBase()
{
}
const QVector<Type *> &data() const
{
return m_data;
}
int count() const override
{
return m_data.count();
}
int indexOfObject(QObject *object) const override
{
return m_data.indexOf(static_cast<Type *>(object));
}
QObject *objectAt(int index) const override
{
return m_data.at(index);
}
void reset()
{
while (!m_hash.isEmpty()) {
removeEntry(m_data.at(m_data.count() - 1)->index());
}
m_pendingRemovals.clear();
}
void insert(Type *object)
{
Q_ASSERT(!m_data.contains(object));
const int modelIndex = m_data.count();
Q_EMIT aboutToBeAdded(modelIndex);
m_data.append(object);
m_hash[object->index()] = object;
Q_EMIT added(modelIndex, object);
}
// Context is passed in as parent because context needs to include the maps
// so we'd cause a circular dep if we were to try to use the instance here.
// Plus that's weird separation anyway.
void updateEntry(const PAInfo *info, QObject *parent)
{
Q_ASSERT(info);
if (m_pendingRemovals.remove(info->index)) {
// Was already removed again.
return;
}
auto *obj = m_hash.value(info->index);
if (!obj) {
obj = new Type(parent);
obj->d->update(info);
insert(obj);
} else {
obj->d->update(info);
}
}
void removeEntry(quint32 index)
{
if (!m_hash.contains(index)) {
m_pendingRemovals.insert(index);
} else {
const int modelIndex = m_data.indexOf(m_hash.value(index));
Q_EMIT aboutToBeRemoved(modelIndex);
m_data.removeAt(modelIndex);
auto object = m_hash.take(index);
Q_EMIT removed(modelIndex, object);
delete object;
}
}
protected:
QVector<Type *> m_data;
QHash<quint32, Type *> m_hash;
QSet<quint32> m_pendingRemovals;
};
typedef MapBase<Card, pa_card_info> CardMap;
typedef MapBase<Client, pa_client_info> ClientMap;
typedef MapBase<SinkInput, pa_sink_input_info> SinkInputMap;
typedef MapBase<Sink, pa_sink_info> SinkMap;
typedef MapBase<Source, pa_source_info> SourceMap;
typedef MapBase<SourceOutput, pa_source_output_info> SourceOutputMap;
typedef MapBase<StreamRestore, pa_ext_stream_restore_info> StreamRestoreMap;
typedef MapBase<Module, pa_module_info> ModuleMap;
} // PulseAudioQt
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