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305 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 2018-02-22
* Description : A text translator using web-services - TTS support.
*
* SPDX-FileCopyrightText: 2018-2022 by Hennadii Chernyshchyk <genaloner at gmail dot com>
* SPDX-FileCopyrightText: 2021-2026 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "donlinetranslator_p.h"
namespace Digikam
{
DOnlineTts::DOnlineTts(QObject* const parent)
: QObject(parent),
d (new Private)
{
}
DOnlineTts::~DOnlineTts()
{
delete d;
}
void DOnlineTts::generateUrls(const QString& text,
DOnlineTranslator::Engine engine,
DOnlineTranslator::Language lang,
Voice voice,<--- Shadow argument
Emotion emotion)<--- Shadow argument
{
// Get speech
QString unparsedText = text;
switch (engine)
{
case DOnlineTranslator::Google:
{
if (voice != NoVoice)
{
setError(UnsupportedVoice, i18nc("@info", "Selected engine %1 does not support voice settings",
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
return;
}
if (emotion != NoEmotion)
{
setError(UnsupportedEmotion, i18nc("@info", "Selected engine %1 does not support emotion settings",
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
return;
}
const QString langString = languageApiCode(engine, lang);
if (langString.isNull())
{
return;
}
// Google has a limit of characters per tts request. If the query is larger, then it should be split into several
while (!unparsedText.isEmpty())
{
const int splitIndex = DOnlineTranslator::getSplitIndex(unparsedText, d->s_googleTtsLimit); // Split the part by special symbol
// Generate URL API for adding it to the playlist
QUrl apiUrl(QStringLiteral("https://translate.googleapis.com/translate_tts"));
const QString query = QStringLiteral("ie=UTF-8&client=gtx&tl=%1&q=%2")
.arg(langString, QString::fromUtf8(QUrl::toPercentEncoding(unparsedText.left(splitIndex))));
#if defined(Q_OS_LINUX)
apiUrl.setQuery(query);
#elif defined(Q_OS_WIN)
apiUrl.setQuery(query, QUrl::DecodedMode);
#endif
d->media.append(apiUrl);
// Remove the said part from the next saying
unparsedText = unparsedText.mid(splitIndex);
}
break;
}
case DOnlineTranslator::Yandex:
{
const QString langString = languageApiCode(engine, lang);
if (langString.isNull())
{
return;
}
const QString voiceString = voiceApiCode(engine, voice);
if (voiceString.isNull())
{
return;
}
const QString emotionString = emotionApiCode(engine, emotion);
if (emotionString.isNull())
{
return;
}
// Yandex has a limit of characters per tts request. If the query is larger, then it should be split into several
while (!unparsedText.isEmpty())
{
const int splitIndex = DOnlineTranslator::getSplitIndex(unparsedText, d->s_yandexTtsLimit); // Split the part by special symbol
// Generate URL API for adding to the playlist
QUrl apiUrl(QStringLiteral("https://tts.voicetech.yandex.net/tts"));
const QString query = QStringLiteral("text=%1&lang=%2&speaker=%3&emotion=%4&format=mp3")
.arg(QString::fromUtf8(QUrl::toPercentEncoding(unparsedText.left(splitIndex))), langString, voiceString, emotionString);
#if defined(Q_OS_LINUX)
apiUrl.setQuery(query);
#elif defined(Q_OS_WIN)
apiUrl.setQuery(query, QUrl::DecodedMode);
#endif
d->media.append(apiUrl);
// Remove the said part from the next saying
unparsedText = unparsedText.mid(splitIndex);
}
break;
}
case DOnlineTranslator::Bing:
case DOnlineTranslator::LibreTranslate:
case DOnlineTranslator::Lingva:
{
// NOTE:
// Lingva returns audio in strange format, use placeholder, until we'll figure it out
//
// Example: https://lingva.ml/api/v1/audio/en/Hello%20World!
// Will return json with uint bytes array, according to documentation
// See: https://github.com/TheDavidDelta/lingva-translate#public-apis
setError(UnsupportedEngine, i18nc("@info", "%1 engine does not support TTS",
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
break;
}
}
}
QList<QUrl> DOnlineTts::media() const
{
return d->media;
}
QString DOnlineTts::errorString() const
{
return d->errorString;
}
DOnlineTts::TtsError DOnlineTts::error() const
{
return d->error;
}
QString DOnlineTts::voiceCode(Voice voice)<--- Shadow argument
{
return Private::s_voiceCodes.value(voice);
}
QString DOnlineTts::emotionCode(Emotion emotion)<--- Shadow argument
{
return Private::s_emotionCodes.value(emotion);
}
DOnlineTts::Emotion DOnlineTts::emotion(const QString& emotionCode)<--- Shadow argument
{
return Private::s_emotionCodes.key(emotionCode, NoEmotion);
}
DOnlineTts::Voice DOnlineTts::voice(const QString& voiceCode)<--- Shadow argument
{
return Private::s_voiceCodes.key(voiceCode, NoVoice);
}
void DOnlineTts::setError(TtsError error, const QString& errorString)<--- Shadow argument<--- Shadow argument
{
d->error = error;
d->errorString = errorString;
}
// Returns engine-specific language code for tts
QString DOnlineTts::languageApiCode(DOnlineTranslator::Engine engine, DOnlineTranslator::Language lang)
{
switch (engine)
{
case DOnlineTranslator::Google:
case DOnlineTranslator::Lingva: // Lingva is a frontend to Google Translate
{
if (lang != DOnlineTranslator::Auto)
{
return DOnlineTranslator::languageApiCode(engine, lang); // Google use the same codes for tts (except 'auto')
}
break;
}
case DOnlineTranslator::Yandex:
{
switch (lang)
{
case DOnlineTranslator::Russian:
{
return QStringLiteral("ru_RU");
}
case DOnlineTranslator::Tatar:
{
return QStringLiteral("tr_TR");
}
case DOnlineTranslator::English:
{
return QStringLiteral("en_GB");
}
default:
{
break;
}
}
break;
}
default:
{
break;
}
}
setError(UnsupportedLanguage, i18nc("@info", "Selected language %1 is not supported for %2",
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Language>().valueToKey(lang)),
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
return QString();
}
QString DOnlineTts::voiceApiCode(DOnlineTranslator::Engine engine, Voice voice)<--- Shadow argument
{
if (engine == DOnlineTranslator::Yandex)
{
if (voice == NoVoice)
{
return voiceCode(Zahar);
}
return voiceCode(voice);
}
setError(UnsupportedVoice, i18nc("@info", "Selected voice %1 is not supported for %2",
QString::fromUtf8(QMetaEnum::fromType<Voice>().valueToKey(voice)),
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
return QString();
}
QString DOnlineTts::emotionApiCode(DOnlineTranslator::Engine engine, Emotion emotion)<--- Shadow argument
{
if (engine == DOnlineTranslator::Yandex)
{
if (emotion == NoEmotion)
{
return emotionCode(Neutral);
}
return emotionCode(emotion);
}
setError(UnsupportedEmotion, i18nc("@info", "Selected emotion %1 is not supported for %2",
QString::fromUtf8(QMetaEnum::fromType<Emotion>().valueToKey(emotion)),
QString::fromUtf8(QMetaEnum::fromType<DOnlineTranslator::Engine>().valueToKey(engine))));
return QString();
}
} // namespace Digikam
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