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/***************************************************************************
CodecManager.cpp - manager for Kwave's coders and decoders
-------------------
begin : Mar 10 2002
copyright : (C) 2002 by Thomas Eschenbacher
email : Thomas Eschenbacher <thomas.eschenbacher@gmx.de>
***************************************************************************/
/***************************************************************************
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "config.h"
#include <QLatin1Char>
#include <QMimeData>
#include <QMimeDatabase>
#include <QMimeType>
#include <QRegularExpression>
#include "libkwave/CodecManager.h"
#include "libkwave/Decoder.h"
#include "libkwave/Encoder.h"
#include "libkwave/String.h"
//***************************************************************************
/* static initializers */
QList<Kwave::Encoder *> Kwave::CodecManager::m_encoders;
QList<Kwave::Decoder *> Kwave::CodecManager::m_decoders;
//***************************************************************************
//***************************************************************************
Kwave::CodecManager::CodecManager()
{
}
//***************************************************************************
Kwave::CodecManager::~CodecManager()
{
Q_ASSERT(m_encoders.isEmpty());
Q_ASSERT(m_decoders.isEmpty());
}
//***************************************************************************
void Kwave::CodecManager::registerEncoder(Kwave::Encoder &encoder)
{
if (m_encoders.contains(&encoder)) return; /* already known */
m_encoders.append(&encoder);
}
//***************************************************************************
void Kwave::CodecManager::unregisterEncoder(Kwave::Encoder *encoder)
{
if (!m_encoders.contains(encoder)) return; /* unknown */
m_encoders.removeAll(encoder);
}
//***************************************************************************
void Kwave::CodecManager::registerDecoder(Kwave::Decoder &decoder)
{
if (m_decoders.contains(&decoder)) return; /* already known */
m_decoders.append(&decoder);
}
//***************************************************************************
void Kwave::CodecManager::unregisterDecoder(Kwave::Decoder *decoder)
{
if (!m_decoders.contains(decoder)) return; /* unknown */
m_decoders.removeAll(decoder);
}
//***************************************************************************
bool Kwave::CodecManager::canDecode(const QString &mimetype_name)
{
foreach (Kwave::Decoder *d, m_decoders)
if (d && d->supports(mimetype_name)) return true;
return false;
}
//***************************************************************************
QString Kwave::CodecManager::mimeTypeOf(const QUrl &url)
{
const QString default_mime_type = QMimeType().name();
foreach (Kwave::Decoder *d, m_decoders) {
if (!d) continue;
QString mime_type = d->mimeTypeOf(url);
if (mime_type != default_mime_type) return mime_type;
}
foreach (Kwave::Encoder *e, m_encoders) {
if (!e) continue;
QString mime_type = e->mimeTypeOf(url);
if (mime_type != default_mime_type) return mime_type;
}
QMimeDatabase db;
return db.mimeTypeForUrl(url).name();
}
//***************************************************************************
QStringList Kwave::CodecManager::encodingMimeTypes()
{
QStringList list;
foreach (Kwave::Encoder *e, m_encoders) {
if (!e) continue;
foreach (const Kwave::CodecBase::MimeType &mime_type, e->mimeTypes()) {
QString name = mime_type.name;
if (list.isEmpty() || !list.contains(name))
list.append(name);
}
}
return list;
}
//***************************************************************************
Kwave::Decoder *Kwave::CodecManager::decoder(const QString &mimetype_name)
{
foreach (Kwave::Decoder *d, m_decoders)
if (d && d->supports(mimetype_name)) return d->instance();
return nullptr;
}
//***************************************************************************
Kwave::Encoder *Kwave::CodecManager::encoder(const QString &mimetype_name)
{
foreach (Kwave::Encoder *e, m_encoders)
if (e && e->supports(mimetype_name)) return e->instance();
return nullptr;
}
//***************************************************************************
QString Kwave::CodecManager::encodingFilter()
{
QStringList list;
foreach (Kwave::Encoder *e, m_encoders) {
// loop over all mime types that the encoder supports
QList<Kwave::CodecBase::MimeType> types = e->mimeTypes();
QListIterator<Kwave::CodecBase::MimeType> ti(types);
while (ti.hasNext()) {
Kwave::CodecBase::MimeType type = ti.next();
QString extensions = type.patterns.join(_(" "));
// skip if extensions are already known/present
if (!list.isEmpty() && list.join(_("\n")).contains(extensions))
continue;
// otherwise append to the list
QString entry = extensions;
QString comment = type.description.replace(
QRegularExpression(_("/")), _(","));
entry += _("|") + comment;
list.append(entry + _(" (") + extensions + _(")"));
}
}
list.sort();
QString str_list = list.join(_("\n"));
Q_ASSERT(!str_list.contains(QLatin1Char('/')));
if (str_list.contains(QLatin1Char('/'))) {
qWarning("CodecManager::encodingFilter() -> '%s'", DBG(str_list));
}
return str_list;
}
//***************************************************************************
QString Kwave::CodecManager::decodingFilter()
{
QStringList list;
QStringList all_extensions;
foreach (Kwave::Decoder *d, m_decoders) {
// loop over all mime types that the decoder supports
QList<Kwave::CodecBase::MimeType> types = d->mimeTypes();
QListIterator<Kwave::CodecBase::MimeType> ti(types);
while (ti.hasNext()) {
Kwave::CodecBase::MimeType type = ti.next();
QString extensions = type.patterns.join(_(" "));
// skip if extensions are already known/present
if (!list.isEmpty() && list.join(_("\n")).contains(extensions))
continue;
// otherwise append to the list
all_extensions += type.patterns;
QString entry = extensions;
QString comment = type.description.replace(
QRegularExpression(_("/")), _(","));
entry += _("|") + comment;
list.append(entry + _(" (") + extensions + _(")"));
}
}
// builtin type for macro files
all_extensions += _("*.kwave");
list.append(_("*.kwave|") + i18n("Kwave Macro Files") + _(" (*.kwave)"));
// special entries for "all" and "all supported"
list.sort();
list.prepend(_("*|") + i18n("All Files"));
list.prepend(all_extensions.join(_(" ")) + _("|") +
i18n("All Supported Files"));
QString str_list = list.join(_("\n"));
Q_ASSERT(!str_list.contains(QLatin1Char('/')));
if (str_list.contains(QLatin1Char('/'))) {
qWarning("CodecManager::decodingFilter() -> '%s'", DBG(str_list));
}
return str_list;
}
//***************************************************************************
//***************************************************************************
#include "moc_CodecManager.cpp"
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