Mercurial > projects > hoofbaby

annotate deps/Platinum/ThirdParty/Neptune/Source/Core/NptRingBuffer.cpp @ 0:3425707ddbf6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial import (hopefully this mercurial stuff works...)
author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
1 /*****************************************************************
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
2 |
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
3 | Neptune - Ring Buffer
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
4 |
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
5 | Copyright (c) 2002-2008, Axiomatic Systems, LLC.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
6 | All rights reserved.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
7 |
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
8 | Redistribution and use in source and binary forms, with or without
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
9 | modification, are permitted provided that the following conditions are met:
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
10 | * Redistributions of source code must retain the above copyright
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
11 | notice, this list of conditions and the following disclaimer.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
12 | * Redistributions in binary form must reproduce the above copyright
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
13 | notice, this list of conditions and the following disclaimer in the
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
14 | documentation and/or other materials provided with the distribution.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
15 | * Neither the name of Axiomatic Systems nor the
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
16 | names of its contributors may be used to endorse or promote products
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
17 | derived from this software without specific prior written permission.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
18 |
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
19 | THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
20 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
21 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
22 | DISCLAIMED. IN NO EVENT SHALL AXIOMATIC SYSTEMS BE LIABLE FOR ANY
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
23 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
26 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
29 |
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
30 ****************************************************************/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
31
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
32 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
33 | includes
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
34 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
35 #include "NptRingBuffer.h"
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
36 #include "NptResults.h"
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
37 #include "NptUtils.h"
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
38 #include "NptStreams.h"
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
39
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
40 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
41 | NPT_RingBuffer::NPT_RingBuffer
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
42 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
43 NPT_RingBuffer::NPT_RingBuffer(NPT_Size size) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
44 m_Size(size),
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
45 m_BufferIsLocal(true),
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
46 m_Closed(false)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
47 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
48 m_Data.start = new unsigned char[size];
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
49 m_Data.end = m_Data.start + size;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
50
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
51 m_In = m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
52 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
53
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
54 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
55 | NPT_RingBuffer::NPT_RingBuffer
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
56 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
57 NPT_RingBuffer::NPT_RingBuffer(void* buffer, NPT_Size size) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
58 m_Size(size),
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
59 m_BufferIsLocal(false)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
60 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
61 m_Data.start = (unsigned char*)buffer;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
62 m_Data.end = m_Data.start + size;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
63
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
64 m_In = m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
65 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
66
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
67 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
68 | NPT_RingBuffer::~NPT_RingBuffer
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
69 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
70 NPT_RingBuffer::~NPT_RingBuffer()
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
71 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
72 if (m_BufferIsLocal) delete[] m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
73 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
74
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
75 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
76 | NPT_RingBuffer::GetContiguousSpace
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
77 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
78 NPT_Size
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
79 NPT_RingBuffer::GetContiguousSpace() const
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
80 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
81 return
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
82 (m_In < m_Out) ?
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
83 (NPT_Size)(m_Out - m_In - 1) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
84 ((m_Out == m_Data.start) ?
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
85 (NPT_Size)(m_Data.end - m_In - 1) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
86 (NPT_Size)(m_Data.end - m_In));
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
87 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
88
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
89 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
90 | NPT_RingBuffer::GetSpace
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
91 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
92 NPT_Size
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
93 NPT_RingBuffer::GetSpace() const
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
94 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
95 return
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
96 (m_In < m_Out) ?
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
97 (NPT_Size)(m_Out - m_In - 1) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
98 (NPT_Size)(m_Data.end - m_In + m_Out - m_Data.start - 1);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
99 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
100
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
101 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
102 | NPT_RingBuffer::Write
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
103 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
104 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
105 NPT_RingBuffer::Write(const void* buffer, NPT_Size byte_count)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
106 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
107 if (m_Closed) return NPT_ERROR_WRITE_FAILED;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
108
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
109 if (byte_count == 0) return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
110 if (m_In < m_Out) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
111 if (buffer) NPT_CopyMemory(m_In, buffer, byte_count);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
112 m_In += byte_count;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
113 if (m_In == m_Data.end) m_In = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
114 } else {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
115 unsigned int chunk = (unsigned int)(m_Data.end - m_In);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
116 if (chunk >= byte_count) chunk = byte_count;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
117
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
118 if (buffer) NPT_CopyMemory(m_In, buffer, chunk);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
119 m_In += chunk;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
120 if (m_In == m_Data.end) m_In = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
121 if (chunk != byte_count) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
122 if (buffer) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
123 NPT_CopyMemory(m_In,
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
124 ((const char*)buffer)+chunk,
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
125 byte_count-chunk);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
126 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
127 m_In += byte_count-chunk;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
128 if (m_In == m_Data.end) m_In = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
129 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
130 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
131
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
132 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
133 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
134
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
135 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
136 | NPT_RingBuffer::GetContiguousAvailable
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
137 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
138 NPT_Size
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
139 NPT_RingBuffer::GetContiguousAvailable() const
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
140 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
141 return
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
142 (m_Out <= m_In) ?
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
143 (NPT_Size)(m_In-m_Out) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
144 (NPT_Size)(m_Data.end - m_Out);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
145 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
146
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
147 /*----------------------------------------------------------------------
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
148 | NPT_RingBuffer::GetAvailable
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
149 +---------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
150 NPT_Size
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
151 NPT_RingBuffer::GetAvailable() const
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
152 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
153 return
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
154 (m_Out <= m_In) ?
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
155 (NPT_Size)(m_In-m_Out) :
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
156 (NPT_Size)(m_Data.end - m_Out + m_In - m_Data.start);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
157 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
158
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
159 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
160 | NPT_RingBuffer::Read
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
161 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
162 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
163 NPT_RingBuffer::Read(void* buffer, NPT_Size byte_count)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
164 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
165 if (m_Closed) return NPT_ERROR_READ_FAILED;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
166
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
167 if (byte_count == 0) return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
168 if (m_In > m_Out) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
169 if (buffer) NPT_CopyMemory(buffer, m_Out, byte_count);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
170 m_Out += byte_count;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
171 if (m_Out == m_Data.end) m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
172 } else {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
173 unsigned int chunk = (unsigned int)(m_Data.end - m_Out);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
174 if (chunk >= byte_count) chunk = byte_count;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
175
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
176 if (buffer) NPT_CopyMemory(buffer, m_Out, chunk);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
177 m_Out += chunk;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
178 if (m_Out == m_Data.end) m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
179 if (chunk != byte_count) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
180 if (buffer) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
181 NPT_CopyMemory(((char*)buffer)+chunk, m_Out, byte_count-chunk);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
182 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
183 m_Out += byte_count-chunk;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
184 if (m_Out == m_Data.end) m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
185 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
186 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
187
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
188 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
189 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
190
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
191 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
192 | NPT_RingBuffer::ReadByte
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
193 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
194 unsigned char
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
195 NPT_RingBuffer::ReadByte()
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
196 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
197 unsigned char result = *m_Out++;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
198 if (m_Out == m_Data.end) m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
199 return result;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
200 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
201
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
202 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
203 | NPT_RingBuffer::PeekByte
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
204 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
205 unsigned char
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
206 NPT_RingBuffer::PeekByte(NPT_Position offset)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
207 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
208 unsigned char *where;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
209
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
210 where = m_Out+offset;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
211 if (where >= m_Data.end) where -= (m_Data.end - m_Data.start);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
212
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
213 return *where;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
214 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
215
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
216 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
217 | NPT_RingBuffer::MoveIn
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
218 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
219 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
220 NPT_RingBuffer::MoveIn(NPT_Position offset)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
221 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
222 int fold;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
223
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
224 m_In += offset;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
225 fold = (int)(m_In - m_Data.end);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
226 if (fold >= 0) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
227 m_In = m_Data.start + fold;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
228 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
229
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
230 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
231 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
232
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
233 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
234 | NPT_RingBuffer::MoveOut
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
235 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
236 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
237 NPT_RingBuffer::MoveOut(NPT_Position offset)
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
238 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
239 int fold;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
240
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
241 m_Out += offset;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
242 fold = (int)(m_Out - m_Data.end);
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
243 if (fold >= 0) {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
244 m_Out = m_Data.start + fold;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
245 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
246
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
247 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
248 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
249
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
250 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
251 | NPT_RingBuffer::Flush
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
252 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
253 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
254 NPT_RingBuffer::Flush()
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
255 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
256 m_In = m_Out = m_Data.start;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
257
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
258 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
259 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
260
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
261 /*----------------------------------------------------------------------+
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
262 | NPT_RingBuffer::Close
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
263 +----------------------------------------------------------------------*/
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
264 NPT_Result
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
265 NPT_RingBuffer::Close()
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
266 {
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
267 m_Closed = true;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
268 return NPT_SUCCESS;
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
269 }
3425707ddbf6 Initial import (hopefully this mercurial stuff works...)
fraserofthenight
parents:
diff changeset
270