evgeny
a97e8bcc1f
Refresh both AGENTS guides and clarify module purpose, usage, ownership, threading, return values and wire formats in headers. Remove the unused timeout_heap freed_count field and unimplemented getter.
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/* Локальное чтение медиа из целого файла или набора блоков по localAttrs.
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* readRange/readAll читают доступные данные; assembleAndCleanup собирает файл и удаляет фрагменты.
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* media_split_to_blocks по умолчанию удаляет исходник после разбиения; сетевую загрузку модуль не выполняет. */
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#pragma once
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#include <QString>
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#include <QList>
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#include <QFile>
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#include <QJsonObject>
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#include <cstdint>
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class MediaBlockReader {
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public:
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MediaBlockReader();
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void initFromAttrs(const QString& mediaDir,
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const QString& dt, const QString& basename,
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const QString& suffix, const QString& ext,
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const QJsonObject& localAttrs,
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qint64 blockSize, qint64 totalSize, int totalBlocks);
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static MediaBlockReader fromLegacyFile(const QString& filePath);
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bool isValid() const { return m_valid; }
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bool isComplete() const { return m_complete; }
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bool isSingleFile() const { return m_mode == SINGLE_FILE; }
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bool isFragmented() const { return m_mode == FRAGMENTED; }
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qint64 totalSize() const { return m_totalSize; }
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QByteArray readAll();
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QByteArray readRange(qint64 offset, qint64 size);
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bool seek(qint64 pos);
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qint64 pos() const { return m_pos; }
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bool atEnd() const;
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bool saveToFile(const QString& destPath);
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QString assembleAndCleanup();
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QJsonObject localAttrsAfterAssembly() const;
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QString debugPath() const;
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private:
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enum Mode { NONE, SINGLE_FILE, FRAGMENTED };
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Mode m_mode = NONE;
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bool m_valid = false;
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bool m_complete = false;
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qint64 m_pos = 0;
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QString m_filePath;
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qint64 m_fileSize = 0;
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QString m_mediaDir, m_dt, m_basename, m_suffix, m_ext;
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QList<int> m_blocks;
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qint64 m_blockSize = 0;
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qint64 m_totalSize = 0;
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int m_totalBlocks = 0;
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qint64 blockSizeForN(int n) const;
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QString blockFilePath(int n) const;
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};
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struct MediaBlockInfo {
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QString dt;
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QString basename;
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QString suffix;
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QString ext;
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int numBlocks = 0;
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qint64 fileSize = 0;
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qint64 blockSize = 0;
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};
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qint64 media_calc_block_size(qint64 fileSize);
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MediaBlockInfo media_split_to_blocks(const QString& srcFile,
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const QString& mediaDir,
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bool removeSrc = true);
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