5 #include "FilterCoder.h"
8 #include "../../../C/Alloc.h"
10 #include "../../Common/Defs.h"
11 #include "StreamUtils.h"
13 static const UInt32 kBufferSize = 1 << 17;
15 CFilterCoder::CFilterCoder()
17 _buffer = (Byte *)::MidAlloc(kBufferSize);
20 CFilterCoder::~CFilterCoder()
25 HRESULT CFilterCoder::WriteWithLimit(ISequentialOutStream *outStream, UInt32 size)
27 if (_outSizeIsDefined)
29 UInt64 remSize = _outSize - _nowPos64;
31 size = (UInt32)remSize;
33 UInt32 processedSize = 0;
34 RINOK(WriteStream(outStream, _buffer, size, &processedSize));
35 if (size != processedSize)
37 _nowPos64 += processedSize;
42 STDMETHODIMP CFilterCoder::Code(ISequentialInStream *inStream,
43 ISequentialOutStream *outStream, const UInt64 * /* inSize */, const UInt64 *outSize,
44 ICompressProgressInfo *progress)
48 _outSizeIsDefined = (outSize != 0);
49 if (_outSizeIsDefined)
56 // Change it: It can be optimized using ReadPart
57 RINOK(ReadStream(inStream, _buffer + bufferPos, kBufferSize - bufferPos, &processedSize));
59 UInt32 endPos = bufferPos + processedSize;
61 bufferPos = Filter->Filter(_buffer, endPos);
62 if (bufferPos > endPos)
64 for (; endPos< bufferPos; endPos++)
66 bufferPos = Filter->Filter(_buffer, endPos);
72 return WriteWithLimit(outStream, endPos);
75 RINOK(WriteWithLimit(outStream, bufferPos));
78 RINOK(progress->SetRatioInfo(&_nowPos64, &_nowPos64));
81 while(bufferPos < endPos)
82 _buffer[i++] = _buffer[bufferPos++];
89 STDMETHODIMP CFilterCoder::SetOutStream(ISequentialOutStream *outStream)
92 _outStream = outStream;
96 STDMETHODIMP CFilterCoder::ReleaseOutStream()
103 STDMETHODIMP CFilterCoder::Write(const void *data, UInt32 size, UInt32 *processedSize)
105 UInt32 processedSizeTotal = 0;
108 UInt32 sizeMax = kBufferSize - _bufferPos;
109 UInt32 sizeTemp = size;
110 if (sizeTemp > sizeMax)
112 memmove(_buffer + _bufferPos, data, sizeTemp);
114 processedSizeTotal += sizeTemp;
115 data = (const Byte *)data + sizeTemp;
116 UInt32 endPos = _bufferPos + sizeTemp;
117 _bufferPos = Filter->Filter(_buffer, endPos);
123 if (_bufferPos > endPos)
129 RINOK(WriteWithLimit(_outStream, _bufferPos));
131 while(_bufferPos < endPos)
132 _buffer[i++] = _buffer[_bufferPos++];
135 if (processedSize != NULL)
136 *processedSize = processedSizeTotal;
140 STDMETHODIMP CFilterCoder::Flush()
144 UInt32 endPos = Filter->Filter(_buffer, _bufferPos);
145 if (endPos > _bufferPos)
147 for (; _bufferPos < endPos; _bufferPos++)
148 _buffer[_bufferPos] = 0;
149 if (Filter->Filter(_buffer, endPos) != endPos)
152 UInt32 processedSize;
153 RINOK(WriteStream(_outStream, _buffer, _bufferPos, &processedSize));
154 if (_bufferPos != processedSize)
158 CMyComPtr<IOutStreamFlush> flush;
159 _outStream.QueryInterface(IID_IOutStreamFlush, &flush);
161 return flush->Flush();
166 STDMETHODIMP CFilterCoder::SetInStream(ISequentialInStream *inStream)
168 _convertedPosBegin = _convertedPosEnd = _bufferPos = 0;
169 _inStream = inStream;
173 STDMETHODIMP CFilterCoder::ReleaseInStream()
179 STDMETHODIMP CFilterCoder::Read(void *data, UInt32 size, UInt32 *processedSize)
181 UInt32 processedSizeTotal = 0;
184 if (_convertedPosBegin != _convertedPosEnd)
186 UInt32 sizeTemp = MyMin(size, _convertedPosEnd - _convertedPosBegin);
187 memmove(data, _buffer + _convertedPosBegin, sizeTemp);
188 _convertedPosBegin += sizeTemp;
189 data = (void *)((Byte *)data + sizeTemp);
191 processedSizeTotal += sizeTemp;
195 for (i = 0; _convertedPosEnd + i < _bufferPos; i++)
196 _buffer[i] = _buffer[i + _convertedPosEnd];
198 _convertedPosBegin = _convertedPosEnd = 0;
199 UInt32 processedSizeTemp;
200 UInt32 size0 = kBufferSize - _bufferPos;
202 RINOK(ReadStream(_inStream, _buffer + _bufferPos, size0, &processedSizeTemp));
203 _bufferPos = _bufferPos + processedSizeTemp;
204 _convertedPosEnd = Filter->Filter(_buffer, _bufferPos);
205 if (_convertedPosEnd == 0)
211 _convertedPosEnd = _bufferPos; // check it
215 if (_convertedPosEnd > _bufferPos)
217 for (; _bufferPos < _convertedPosEnd; _bufferPos++)
218 _buffer[_bufferPos] = 0;
219 _convertedPosEnd = Filter->Filter(_buffer, _bufferPos);
222 if (processedSize != NULL)
223 *processedSize = processedSizeTotal;
227 // #endif // _ST_MODE
230 STDMETHODIMP CFilterCoder::CryptoSetPassword(const Byte *data, UInt32 size)
232 return _setPassword->CryptoSetPassword(data, size);
237 STDMETHODIMP CFilterCoder::SetCoderProperties(const PROPID *propIDs,
238 const PROPVARIANT *properties, UInt32 numProperties)
240 return _SetCoderProperties->SetCoderProperties(propIDs, properties, numProperties);
243 STDMETHODIMP CFilterCoder::WriteCoderProperties(ISequentialOutStream *outStream)
245 return _writeCoderProperties->WriteCoderProperties(outStream);
249 STDMETHODIMP CFilterCoder::ResetSalt()
251 return _CryptoResetSalt->ResetSalt();
255 STDMETHODIMP CFilterCoder::ResetInitVector()
257 return _CryptoResetInitVector->ResetInitVector();
261 STDMETHODIMP CFilterCoder::SetDecoderProperties2(const Byte *data, UInt32 size)
263 return _setDecoderProperties->SetDecoderProperties2(data, size);