aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/PutPackedImage.h
blob: 5287a5b57166823eab19c3eefb506d2b07ff565f (plain)
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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/.         */
/*                                                                        */
/* NXCOMP, NX protocol compression and NX extensions to this software     */
/* are copyright of NoMachine. Redistribution and use of the present      */
/* software is allowed according to terms specified in the file LICENSE   */
/* which comes in the source distribution.                                */
/*                                                                        */
/* Check http://www.nomachine.com/licensing.html for applicability.       */
/*                                                                        */
/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/**************************************************************************/

#ifndef PutPackedImage_H
#define PutPackedImage_H

#include "Message.h"

//
// Set the verbosity level.
//

#define PANIC
#define WARNING
#undef  TEST
#undef  DEBUG
#undef  DUMP

//
// Set default values.
//

#define PUTPACKEDIMAGE_ENABLE_CACHE                            1
#define PUTPACKEDIMAGE_ENABLE_DATA                             1
#define PUTPACKEDIMAGE_ENABLE_SPLIT                            1
#define PUTPACKEDIMAGE_ENABLE_COMPRESS                         0

//
// We can't exceed lenght of 262144 bytes.
//

#define PUTPACKEDIMAGE_DATA_LIMIT                              262144 - 40
#define PUTPACKEDIMAGE_DATA_OFFSET                             40

#define PUTPACKEDIMAGE_CACHE_SLOTS                             6000
#define PUTPACKEDIMAGE_CACHE_THRESHOLD                         70
#define PUTPACKEDIMAGE_CACHE_LOWER_THRESHOLD                   50

#define PUTPACKEDIMAGE_CACHE_THRESHOLD_IF_PACKED_SHADOW        97
#define PUTPACKEDIMAGE_CACHE_LOWER_THRESHOLD_IF_PACKED_SHADOW  90

#define PUTPACKEDIMAGE_ENABLE_SPLIT_IF_PROTO_STEP_8            0

//
// The message class.
//

class PutPackedImageMessage : public Message
{
  friend class PutPackedImageStore;

  public:

  PutPackedImageMessage()
  {
  }

  ~PutPackedImageMessage()
  {
  }

  //
  // Here are the fields which constitute
  // the 'identity' part of the message.
  //

  private:

  unsigned char  client;

  unsigned int   drawable;
  unsigned int   gcontext;

  unsigned char  format;
  unsigned char  method;

  unsigned char  src_depth;
  unsigned char  dst_depth;

  unsigned int   src_length;
  unsigned int   dst_length;

  short int      src_x;
  short int      src_y;
  unsigned short src_width;
  unsigned short src_height;

  short int      dst_x;
  short int      dst_y;
  unsigned short dst_width;
  unsigned short dst_height;
};

class PutPackedImageStore : public MessageStore
{
  //
  // Constructors and destructors.
  //

  public:

  PutPackedImageStore(StaticCompressor *compressor);

  virtual ~PutPackedImageStore();

  virtual const char *name() const
  {
    return "PutPackedImage";
  }

  virtual unsigned char opcode() const
  {
    return X_NXPutPackedImage;
  }

  virtual unsigned int storage() const
  {
    return sizeof(PutPackedImageMessage);
  }

  //
  // Very special of this class.
  //

  int getPackedSize(const int position) const
  {
    PutPackedImageMessage *message = (PutPackedImageMessage *) (*messages_)[position];

    if (message == NULL)
    {
      return 0;
    }

    return dataOffset + message -> src_length;
  }

  int getUnpackedSize(const int position) const
  {
    PutPackedImageMessage *message = (PutPackedImageMessage *) (*messages_)[position];

    if (message == NULL)
    {
      return 0;
    }

    return dataOffset + message -> dst_length;
  }

  //
  // Message handling methods.
  //

  protected:

  virtual Message *create() const
  {
    return new PutPackedImageMessage();
  }

  virtual Message *create(const Message &message) const
  {
    return new PutPackedImageMessage((const PutPackedImageMessage &) message);
  }

  virtual void destroy(Message *message) const
  {
    delete (PutPackedImageMessage *) message;
  }

  virtual int encodeIdentity(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
                                 const unsigned int size, int bigEndian,
                                     ChannelCache *channelCache) const;

  virtual int decodeIdentity(DecodeBuffer &decodeBuffer, unsigned char *&buffer,
                                 unsigned int &size, int bigEndian, WriteBuffer *writeBuffer,
                                     ChannelCache *channelCache) const;

  virtual int parseIdentity(Message *message, const unsigned char *buffer, 
                                unsigned int size, int bigEndian) const;

  virtual int unparseIdentity(const Message *message, unsigned char *buffer, 
                                  unsigned int size, int bigEndian) const;

  virtual void updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
                                  const Message *cachedMessage,
                                      ChannelCache *channelCache) const;

  virtual void updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
                                  ChannelCache *channelCache) const;

  virtual void identityChecksum(const Message *message, const unsigned char *buffer, 
                                    unsigned int size, int bigEndian) const;

  virtual void dumpIdentity(const Message *message) const;
};

#endif /* PutPackedImage_H */