other-licenses/7zstub/src/7zip/Common/LSBFEncoder.h@97036ab72558
other-licenses/7zstub/src/7zip/Common/LSBFEncoder.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 // Stream/LSBFEncoder.h
3 #ifndef __STREAM_LSBFENCODER_H
4 #define __STREAM_LSBFENCODER_H
6 #include "../IStream.h"
7 #include "OutBuffer.h"
9 namespace NStream {
10 namespace NLSBF {
12 class CEncoder
13 {
14 COutBuffer m_Stream;
15 int m_BitPos;
16 Byte m_CurByte;
17 public:
18 bool Create(UInt32 bufferSize) { return m_Stream.Create(bufferSize); }
19 void SetStream(ISequentialOutStream *outStream) { m_Stream.SetStream(outStream); }
20 void ReleaseStream() { m_Stream.ReleaseStream(); }
21 void Init()
22 {
23 m_Stream.Init();
24 m_BitPos = 8;
25 m_CurByte = 0;
26 }
27 HRESULT Flush()
28 {
29 FlushByte();
30 return m_Stream.Flush();
31 }
33 void FlushByte()
34 {
35 if(m_BitPos < 8)
36 m_Stream.WriteByte(m_CurByte);
37 m_BitPos = 8;
38 m_CurByte = 0;
39 }
41 void WriteBits(UInt32 value, int numBits);
42 UInt32 GetBitPosition() const { return (8 - m_BitPos); }
43 UInt64 GetProcessedSize() const {
44 return m_Stream.GetProcessedSize() + (8 - m_BitPos + 7) /8; }
45 void WriteByte(Byte b) { m_Stream.WriteByte(b);}
46 };
49 }}
51 #endif
