4e42229bdd
git-subtree-dir: external/gainput git-subtree-split: 2be0a50089eafcc6fccb66142180082e48f27f4c
146 lines
2.5 KiB
C++
146 lines
2.5 KiB
C++
#ifndef GAINPUTSTREAM_H_
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#define GAINPUTSTREAM_H_
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#if defined(GAINPUT_PLATFORM_LINUX) || defined(GAINPUT_PLATFORM_ANDROID)
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#include <arpa/inet.h>
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#include <stdint.h>
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#elif defined(GAINPUT_PLATFORM_WIN)
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#include <Winsock2.h>
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typedef unsigned __int16 uint16_t;
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typedef __int16 int16_t;
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typedef unsigned __int32 uint32_t;
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typedef __int32 int32_t;
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#endif
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namespace gainput {
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class Stream
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{
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public:
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virtual ~Stream() { }
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virtual size_t Read(void* dest, size_t length) = 0;
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virtual size_t Write(const void* src, size_t length) = 0;
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virtual size_t GetSize() const = 0;
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virtual size_t GetLeft() const = 0;
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virtual bool SeekBegin(int offset) = 0;
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virtual bool SeekCurrent(int offset) = 0;
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virtual bool SeekEnd(int offset) = 0;
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virtual void Reset() = 0;
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virtual bool IsEof() const = 0;
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template<class T> size_t Read(T& dest) { return Read(&dest, sizeof(T)); }
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template<class T> size_t Write(const T& src) { return Write(&src, sizeof(T)); }
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};
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template<>
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inline
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size_t
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Stream::Read(uint16_t& dest)
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{
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const size_t result = Read(&dest, sizeof(dest));
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dest = ntohs(dest);
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return result;
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}
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template<>
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inline
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size_t
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Stream::Read(int16_t& dest)
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{
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const size_t result = Read(&dest, sizeof(dest));
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dest = ntohs((uint16_t)dest);
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return result;
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}
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template<>
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inline
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size_t
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Stream::Read(uint32_t& dest)
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{
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const size_t result = Read(&dest, sizeof(dest));
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dest = ntohl(dest);
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return result;
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}
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template<>
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inline
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size_t
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Stream::Read(int32_t& dest)
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{
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const size_t result = Read(&dest, sizeof(dest));
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dest = ntohl((uint32_t)dest);
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return result;
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}
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template<>
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inline
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size_t
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Stream::Read(float& dest)
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{
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const size_t result = Read(&dest, sizeof(dest));
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const uint32_t tmpInt = ntohl(*(uint32_t*)&dest);
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const float* tmpFloatP = (float*)&tmpInt;
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dest = *tmpFloatP;
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return result;
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}
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template<>
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inline
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size_t
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Stream::Write(const uint16_t& src)
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{
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const uint16_t tmp = htons(src);
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return Write(&tmp, sizeof(tmp));
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}
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template<>
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inline
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size_t
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Stream::Write(const int16_t& src)
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{
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const int16_t tmp = htons((uint16_t)src);
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return Write(&tmp, sizeof(tmp));
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}
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template<>
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inline
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size_t
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Stream::Write(const uint32_t& src)
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{
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const uint32_t tmp = htonl(src);
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return Write(&tmp, sizeof(tmp));
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}
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template<>
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inline
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size_t
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Stream::Write(const int32_t& src)
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{
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const int32_t tmp = htonl((uint32_t)src);
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return Write(&tmp, sizeof(tmp));
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}
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template<>
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inline
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size_t
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Stream::Write(const float& src)
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{
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const uint32_t tmpInt = htonl(*(uint32_t*)&src);
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const float* tmpFloatP = (float*)&tmpInt;
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const float tmp = *tmpFloatP;
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return Write(&tmp, sizeof(tmp));
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}
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}
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#endif
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