mirror of
https://github.com/tumic0/QtPBFImagePlugin.git
synced 2024-11-30 22:51:17 +01:00
36 lines
731 B
C++
36 lines
731 B
C++
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#include <QtEndian>
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#include <QDebug>
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#include <zlib.h>
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#include "gzip.h"
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QByteArray Gzip::uncompress(const QByteArray &data)
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{
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QByteArray uba;
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z_stream stream;
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quint32 *size = (quint32*)(data.constData() + data.size() - sizeof(quint32));
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uba.resize(qFromLittleEndian(*size));
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stream.zalloc = Z_NULL;
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stream.zfree = Z_NULL;
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stream.opaque = Z_NULL;
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stream.next_in = (Bytef*)data.constData();
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stream.avail_in = data.size();
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stream.next_out = (Bytef*)uba.data();
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stream.avail_out = uba.size();
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if (inflateInit2(&stream, MAX_WBITS + 16) != Z_OK)
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return uba;
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if (inflate(&stream, Z_NO_FLUSH) != Z_STREAM_END) {
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qCritical() << "Invalid gzip data";
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uba = QByteArray();
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}
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inflateEnd(&stream);
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return uba;
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}
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