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VideoCommon: rewrite DataReader

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This commit is contained in:
degasus
2014-11-24 22:22:42 +01:00
parent 1ad8d4629c
commit 27f984c02e
4 changed files with 71 additions and 41 deletions
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91
Source/Core/VideoCommon/DataReader.h
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@ -9,9 +9,63 @@
extern u8* g_video_buffer_read_ptr;
#if _M_SSE >= 0x301 && !(defined __GNUC__ && !defined __SSSE3__)
#include <tmmintrin.h>
#endif
class DataReader
{
public:
__forceinline DataReader()
: buffer(nullptr), end(nullptr) {}
__forceinline DataReader(u8* src, u8* _end)
: buffer(src), end(_end) {}
__forceinline void WritePointer(u8** src)
{
*src = buffer;
}
__forceinline u8* operator=(u8* src)
{
buffer = src;
return src;
}
__forceinline size_t size()
{
return end - buffer;
}
template <typename T, bool swapped = true> __forceinline T Peek(int offset = 0)
{
T data = *(T*)(buffer + offset);
if (swapped)
data = Common::FromBigEndian(data);
return data;
}
template <typename T, bool swapped = true> __forceinline T Read()
{
const T result = Peek<T, swapped>();
buffer += sizeof(T);
return result;
}
template <typename T, bool swapped = false> __forceinline void Write(T data)
{
if (swapped)
data = Common::FromBigEndian(data);
*(T*)(buffer) = data;
buffer += sizeof(T);
}
template <typename T = u8> __forceinline void Skip(size_t data = 1)
{
buffer += sizeof(T) * data;
}
private:
u8* __restrict buffer;
u8* end;
};
__forceinline void DataSkip(u32 skip)
{
@ -56,22 +110,6 @@ __forceinline T DataRead(u8** bufp = &g_video_buffer_read_ptr)
return result;
}
class DataReader
{
public:
inline DataReader() : buffer(g_video_buffer_read_ptr), offset(0) {}
inline ~DataReader() { g_video_buffer_read_ptr += offset; }
template <typename T> inline T Read()
{
const T result = Common::FromBigEndian(*(T*)(buffer + offset));
offset += sizeof(T);
return result;
}
private:
u8 *buffer;
int offset;
};
// TODO: kill these
__forceinline u8 DataReadU8()
{
@ -111,18 +149,3 @@ __forceinline void DataWrite(T data)
*(T*)VertexManager::s_pCurBufferPointer = data;
VertexManager::s_pCurBufferPointer += sizeof(T);
}
class DataWriter
{
public:
inline DataWriter() : buffer(VertexManager::s_pCurBufferPointer), offset(0) {}
inline ~DataWriter() { VertexManager::s_pCurBufferPointer += offset; }
template <typename T> inline void Write(T data)
{
*(T*)(buffer+offset) = data;
offset += sizeof(T);
}
private:
u8 *buffer;
int offset;
};