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CframeV1.C
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1 /*
2 ** CframeV1.C
3 **
4 ** Author: $Author: phnxbld $
5 ** Date: $Date: 2009/09/19 14:34:27 $
6 **
7 ** $Log: CframeV1.C,v $
8 ** Revision 1.2 2009/09/19 14:34:27 phnxbld
9 ** fix compiler warning
10 **
11 ** Revision 1.1.1.1 2000/07/21 01:51:10 purschke
12 ** mlp -- adding the new automakified "basic" module to CVS.
13 **
14 **
15 ** Revision 1.3 1998/12/11 22:01:58 markacs
16 ** (stephen markacs) adding log into cvs tags
17 **
18 */
19 #include "CframeV1.h"
20 
21 /*
22 ** makeFrameHdrV1 makes a Version 1 frame header. It takes the address pointed to by
23 ** the frame_ptr passed to it, clears the right amount of space for the header
24 ** (sets all bytes to 0), sets the frameMark, hdrVersion, hdrLength, and
25 ** frameLength fields to the appropriate values for an empty Version 1 header,
26 ** sets the dataType, frameType and sourceId fields to the values passes to it,
27 ** and copies the alignment block from the location pointed to by the
28 ** alignment pointer passed to it.
29 */
30 VALUE_ret makeFrameHdrV1 (PHDWORD* frame_ptr, UINT maxFrameLen, UINT dataType,
31  UINT frameType, UINT sourceId)
32 {
33  if (maxFrameLen < currentFrameHdrLength) return valueFailure;
34 
35  dwordClear (frame_ptr, currentFrameHdrLength);
36 
37  setFrameMark(frame_ptr,currentFrameMark);
40 
41  setDataType(frame_ptr, dataType);
42  setFrameType(frame_ptr, frameType);
43  setSourceId(frame_ptr, sourceId);
46 
47  return 0;
48 }
49 
51 {
52  PHDWORD dataLength = getFrameLength(frame_ptr)
53  - getFrameHdrLength(frame_ptr)
54  - getFrameErrorLengthV1(frame_ptr)
55  - getFrameHistoryLengthV1(frame_ptr)
56  - getFramePaddingV1(frame_ptr) ;
57 
58  if (dataLength > getFrameLength(frame_ptr) )
59  {
61  return valueFailure;
62  }
63  else
64  {
66  return dataLength;
67  }
68 }
69 
70 /* set bits in the frame status word */
71 VALUE_ret orFrameStatusV1 (FRAME_ptr frame_ptr, UINT statusBits)
72 {
73  UINT status;
74  /*
75  ** Make sure intended bits fit within field length
76  */
77  if ((statusBits & ((1<<STATUS_NUM_BITS)-1)) == statusBits)
78  {
79  status = getBitsMACRO(frame_ptr, STATUS_OFFSET_OF_DWORD,
81  status|=statusBits;
82  setBitsMACRO(frame_ptr,
86  status );
87  return status;
88  }
89  else
90  {
92  return valueFailure;
93  }
94 }
95 
96 
97 
99 {
100  UINT newLength = getFrameHistoryLengthV1(frame_ptr) + newDwords;
101 
102  /*
103  ** Make sure it fits in the current field size
104  */
105  if (newLength > maxSwordValue)
106  {
107  setFrameError(FORMAT_ERR_HISTORY_OVERFLOW, frame_ptr, newDwords);
108  return valueFailure;
109  }
110  else
111  {
112  setBitsMACRO(frame_ptr,
116  newLength );
117  setFrameSuccess();
118  return newLength;
119  }
120 }
121 
122 
123 
125 {
126  UINT newLength = getFrameErrorLengthV1(frame_ptr) + newDwords;
127 
128  /*
129  ** Make sure it fits in the current field size
130  */
131  if (newLength > maxSwordValue)
132  {
133  setFrameError(FORMAT_ERR_ERROR_OVERFLOW, frame_ptr, newDwords);
134  return valueFailure;
135  }
136  else
137  {
138  setBitsMACRO(frame_ptr,
142  newLength );
143  setFrameSuccess();
144  return newLength;
145  }
146 }
147 
148 
149