87 lines
2 KiB
C++
87 lines
2 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "base/bytes.h"
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#include "core/file_location.h"
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#include "media/streaming/media_streaming_utility.h"
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namespace Media {
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class AudioPlayerLoader {
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public:
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AudioPlayerLoader(
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const Core::FileLocation &file,
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const QByteArray &data,
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bytes::vector &&buffer);
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virtual ~AudioPlayerLoader();
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virtual bool check(
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const Core::FileLocation &file,
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const QByteArray &data);
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virtual bool open(crl::time positionMs, float64 speed = 1.) = 0;
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virtual crl::time duration() = 0;
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virtual int samplesFrequency() = 0;
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virtual int sampleSize() = 0;
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virtual int format() = 0;
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virtual void dropFramesTill(int64 samples) {
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}
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[[nodiscard]] virtual int64 startReadingQueuedFrames(float64 newSpeed) {
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Unexpected(
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"startReadingQueuedFrames() on not AbstractAudioFFMpegLoader");
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}
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[[nodiscard]] int bytesPerBuffer();
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enum class ReadError {
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Other,
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Retry,
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RetryNotQueued,
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Wait,
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EndOfFile,
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};
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using ReadResult = std::variant<bytes::const_span, ReadError>;
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[[nodiscard]] virtual ReadResult readMore() = 0;
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virtual void enqueuePackets(std::deque<FFmpeg::Packet> &&packets) {
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Unexpected("enqueuePackets() call on not ChildFFMpegLoader.");
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}
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virtual void setForceToBuffer(bool force) {
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Unexpected("setForceToBuffer() call on not ChildFFMpegLoader.");
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}
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virtual bool forceToBuffer() const {
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return false;
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}
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void saveDecodedSamples(not_null<QByteArray*> samples);
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void takeSavedDecodedSamples(not_null<QByteArray*> samples);
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bool holdsSavedDecodedSamples() const;
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void dropDecodedSamples();
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protected:
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Core::FileLocation _file;
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bool _access = false;
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QByteArray _data;
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bytes::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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bool _holdsSavedSamples = false;
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int _bytesPerBuffer = 0;
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};
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} // namespace Media
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