72 lines
2.0 KiB
C++
72 lines
2.0 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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namespace FFMpeg {
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struct AVPacketDataWrap;
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} // namespace FFMpeg
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class AudioPlayerLoader {
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public:
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AudioPlayerLoader(const FileLocation &file, const QByteArray &data, base::byte_vector &&bytes);
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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(TimeMs positionMs) = 0;
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virtual int64 samplesCount() = 0;
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virtual int32 samplesFrequency() = 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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virtual void enqueuePackets(QQueue<FFMpeg::AVPacketDataWrap> &packets) {
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Unexpected("enqueuePackets() call on not ChildFFMpegLoader.");
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}
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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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base::byte_vector _bytes;
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QFile _f;
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int _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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