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Implemented SeekableSubReadStreamEndian moddeled after MemoryReadStreamEndian.

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svn-id: r31270
This commit is contained in:
Johannes Schickel 2008-03-27 20:53:52 +00:00
parent 639c4597cd
commit ff2ba585b3
1 changed files with 32 additions and 2 deletions
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34
common/stream.h
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@ -358,6 +358,36 @@ public:
virtual void seek(int32 offset, int whence = SEEK_SET);
};
/**
* This is a wrapper around SeekableSubReadStream, but it adds non-endian
* read methods whose endianness is set on the stream creation.
*/
class SeekableSubReadStreamEndian : public SeekableSubReadStream {
public:
bool _bigEndian;
SeekableSubReadStreamEndian(SeekableReadStream *parentStream, uint32 begin, uint32 end, bool bigEndian = false, bool disposeParentStream = false)
: SeekableSubReadStream(parentStream, begin, end, disposeParentStream), _bigEndian(bigEndian) {
}
inline uint16 readUint16() {
return (_bigEndian) ? readUint16BE() : readUint16LE();
}
inline uint32 readUint32() {
return (_bigEndian) ? readUint32BE() : readUint32LE();
}
inline int16 readSint16() {
return (int16)readUint16();
}
inline int32 readSint32() {
return (int32)readUint32();
}
};
/**
* Simple memory based 'stream', which implements the ReadStream interface for
* a plain memory block.
@ -414,11 +444,11 @@ public:
MemoryReadStreamEndian(const byte *buf, uint32 len, bool bigEndian = false) : MemoryReadStream(buf, len), _bigEndian(bigEndian) {}
inline uint16 readUint16() {
return (_bigEndian) ? readUint16BE(): readUint16LE();
return (_bigEndian) ? readUint16BE() : readUint16LE();
}
inline uint32 readUint32() {
return (_bigEndian) ? readUint32BE(): readUint32LE();
return (_bigEndian) ? readUint32BE() : readUint32LE();
}
inline int16 readSint16() {