1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
// LzmaEncoder.cpp
#include "StdAfx.h"
#include "../../../C/Alloc.h"
#include "../Common/CWrappers.h"
#include "../Common/StreamUtils.h"
#include "LzmaEncoder.h"
namespace NCompress {
namespace NLzma {
CEncoder::CEncoder()
{
_encoder = NULL;
_encoder = LzmaEnc_Create(&g_AlignedAlloc);
if (!_encoder)
throw 1;
}
CEncoder::~CEncoder()
{
if (_encoder)
LzmaEnc_Destroy(_encoder, &g_AlignedAlloc, &g_BigAlloc);
}
static inline wchar_t GetUpperChar(wchar_t c)
{
if (c >= 'a' && c <= 'z')
c -= 0x20;
return c;
}
static int ParseMatchFinder(const wchar_t *s, int *btMode, int *numHashBytes)
{
wchar_t c = GetUpperChar(*s++);
if (c == L'H')
{
if (GetUpperChar(*s++) != L'C')
return 0;
int numHashBytesLoc = (int)(*s++ - L'0');
if (numHashBytesLoc < 4 || numHashBytesLoc > 4)
return 0;
if (*s != 0)
return 0;
*btMode = 0;
*numHashBytes = numHashBytesLoc;
return 1;
}
if (c != L'B')
return 0;
if (GetUpperChar(*s++) != L'T')
return 0;
int numHashBytesLoc = (int)(*s++ - L'0');
if (numHashBytesLoc < 2 || numHashBytesLoc > 4)
return 0;
if (*s != 0)
return 0;
*btMode = 1;
*numHashBytes = numHashBytesLoc;
return 1;
}
#define SET_PROP_32(_id_, _dest_) case NCoderPropID::_id_: ep._dest_ = v; break;
HRESULT SetLzmaProp(PROPID propID, const PROPVARIANT &prop, CLzmaEncProps &ep)
{
if (propID == NCoderPropID::kMatchFinder)
{
if (prop.vt != VT_BSTR)
return E_INVALIDARG;
return ParseMatchFinder(prop.bstrVal, &ep.btMode, &ep.numHashBytes) ? S_OK : E_INVALIDARG;
}
if (propID > NCoderPropID::kReduceSize)
return S_OK;
if (propID == NCoderPropID::kReduceSize)
{
if (prop.vt == VT_UI8)
ep.reduceSize = prop.uhVal.QuadPart;
else
return E_INVALIDARG;
return S_OK;
}
if (prop.vt != VT_UI4)
return E_INVALIDARG;
UInt32 v = prop.ulVal;
switch (propID)
{
case NCoderPropID::kDefaultProp: if (v > 31) return E_INVALIDARG; ep.dictSize = (UInt32)1 << (unsigned)v; break;
SET_PROP_32(kLevel, level)
SET_PROP_32(kNumFastBytes, fb)
SET_PROP_32(kMatchFinderCycles, mc)
SET_PROP_32(kAlgorithm, algo)
SET_PROP_32(kDictionarySize, dictSize)
SET_PROP_32(kPosStateBits, pb)
SET_PROP_32(kLitPosBits, lp)
SET_PROP_32(kLitContextBits, lc)
SET_PROP_32(kNumThreads, numThreads)
default: return E_INVALIDARG;
}
return S_OK;
}
STDMETHODIMP CEncoder::SetCoderProperties(const PROPID *propIDs,
const PROPVARIANT *coderProps, UInt32 numProps)
{
CLzmaEncProps props;
LzmaEncProps_Init(&props);
for (UInt32 i = 0; i < numProps; i++)
{
const PROPVARIANT &prop = coderProps[i];
PROPID propID = propIDs[i];
switch (propID)
{
case NCoderPropID::kEndMarker:
if (prop.vt != VT_BOOL) return E_INVALIDARG; props.writeEndMark = (prop.boolVal != VARIANT_FALSE); break;
default:
RINOK(SetLzmaProp(propID, prop, props));
}
}
return SResToHRESULT(LzmaEnc_SetProps(_encoder, &props));
}
STDMETHODIMP CEncoder::SetCoderPropertiesOpt(const PROPID *propIDs,
const PROPVARIANT *coderProps, UInt32 numProps)
{
for (UInt32 i = 0; i < numProps; i++)
{
const PROPVARIANT &prop = coderProps[i];
PROPID propID = propIDs[i];
if (propID == NCoderPropID::kExpectedDataSize)
if (prop.vt == VT_UI8)
LzmaEnc_SetDataSize(_encoder, prop.uhVal.QuadPart);
}
return S_OK;
}
STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream)
{
Byte props[LZMA_PROPS_SIZE];
size_t size = LZMA_PROPS_SIZE;
RINOK(LzmaEnc_WriteProperties(_encoder, props, &size));
return WriteStream(outStream, props, size);
}
#define RET_IF_WRAP_ERROR(wrapRes, sRes, sResErrorCode) \
if (wrapRes != S_OK /* && (sRes == SZ_OK || sRes == sResErrorCode) */) return wrapRes;
STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress)
{
CSeqInStreamWrap inWrap;
CSeqOutStreamWrap outWrap;
CCompressProgressWrap progressWrap;
inWrap.Init(inStream);
outWrap.Init(outStream);
progressWrap.Init(progress);
SRes res = LzmaEnc_Encode(_encoder, &outWrap.vt, &inWrap.vt,
progress ? &progressWrap.vt : NULL, &g_AlignedAlloc, &g_BigAlloc);
_inputProcessed = inWrap.Processed;
RET_IF_WRAP_ERROR(inWrap.Res, res, SZ_ERROR_READ)
RET_IF_WRAP_ERROR(outWrap.Res, res, SZ_ERROR_WRITE)
RET_IF_WRAP_ERROR(progressWrap.Res, res, SZ_ERROR_PROGRESS)
return SResToHRESULT(res);
}
}}
|
