64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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class AudioPlayerLoader {
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public:
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AudioPlayerLoader(const FileLocation &file, const QByteArray &data);
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virtual ~AudioPlayerLoader();
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virtual bool check(const FileLocation &file, const QByteArray &data);
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virtual bool open(qint64 &position) = 0;
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virtual TimeMs duration() = 0;
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virtual int32 frequency() = 0;
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virtual int32 format() = 0;
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enum class ReadResult {
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Error,
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NotYet,
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Ok,
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Wait,
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EndOfFile,
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};
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virtual ReadResult readMore(QByteArray &samples, int64 &samplesCount) = 0;
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void saveDecodedSamples(QByteArray *samples, int64 *samplesCount);
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void takeSavedDecodedSamples(QByteArray *samples, int64 *samplesCount);
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bool holdsSavedDecodedSamples() const;
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protected:
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FileLocation file;
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bool access = false;
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QByteArray data;
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QFile f;
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int32 dataPos = 0;
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bool openFile();
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private:
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QByteArray _savedSamples;
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int64 _savedSamplesCount = 0;
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bool _holdsSavedSamples = false;
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};
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