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* Refactor compression and utility

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This commit is contained in:
Phillip Stephens
2014-09-09 03:19:19 -07:00
parent 814eda3d4c
commit 5a621215de
8 changed files with 194 additions and 28 deletions
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16
src/Athena/Compression.cpp
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@@ -26,7 +26,7 @@ namespace io
namespace Compression
{
atInt32 decompressZlib(atUint8 *src, atUint32 srcLen, atUint8* dst, atUint32 dstLen)
atInt32 decompressZlib(const atUint8* src, atUint32 srcLen, atUint8* dst, atUint32 dstLen)
{
z_stream strm = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
strm.total_in = strm.avail_in = srcLen;
@@ -103,7 +103,7 @@ atInt32 compressZlib(const atUint8 *src, atUint32 srcLen, atUint8 *dst, atUint32
return ret;
}
atInt32 decompressLZO(atUint8* source, atInt32 sourceSize, atUint8* dest, atInt32& dstSize)
atInt32 decompressLZO(const atUint8* source, atInt32 sourceSize, atUint8* dest, atInt32& dstSize)
{
int size = dstSize;
int result = lzo1x_decode(dest, &size, source, &sourceSize);
@@ -114,7 +114,7 @@ atInt32 decompressLZO(atUint8* source, atInt32 sourceSize, atUint8* dest, atInt3
//src points to the yaz0 source data (to the "real" source data, not at the header!)
//dst points to a buffer uncompressedSize bytes large (you get uncompressedSize from
//the second 4 bytes in the Yaz0 header).
atUint32 yaz0Decode(atUint8* src, atUint8* dst, atUint32 uncompressedSize)
atUint32 yaz0Decode(const atUint8* src, atUint8* dst, atUint32 uncompressedSize)
{
atUint32 srcPlace = 0, dstPlace = 0; //current read/write positions
@@ -179,10 +179,10 @@ typedef struct
atUint32 srcPos, dstPos;
} yaz0_Ret;
atUint32 simpleEnc(atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos);
atUint32 nintendoEnc(atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos);
atUint32 simpleEnc(const atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos);
atUint32 nintendoEnc(const atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos);
atUint32 yaz0Encode(atUint8* src, atUint32 srcSize, atUint8* data)
atUint32 yaz0Encode(const atUint8* src, atUint32 srcSize, atUint8* data)
{
yaz0_Ret r = { 0, 0 };
atInt32 pos = 0;
@@ -265,7 +265,7 @@ atUint32 yaz0Encode(atUint8* src, atUint32 srcSize, atUint8* data)
}
// a lookahead encoding scheme for ngc Yaz0
atUint32 nintendoEnc(atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos)
atUint32 nintendoEnc(const atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos)
{
atUint32 numBytes = 1;
static atUint32 numBytes1;
@@ -297,7 +297,7 @@ atUint32 nintendoEnc(atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPo
}
// simple and straight encoding scheme for Yaz0
atUint32 simpleEnc(atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos)
atUint32 simpleEnc(const atUint8* src, atInt32 size, atInt32 pos, atUint32 *pMatchPos)
{
int startPos = pos - 0x1000, j, i;
atUint32 numBytes = 1;