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annotate deps/Platinum/Source/Core/PltStreamPump.h @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - Stream Pump
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 #ifndef _PLT_STREAM_PUMP_H_
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35 #define _PLT_STREAM_PUMP_H_
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36
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37 /*----------------------------------------------------------------------
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38 | includes
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39 +---------------------------------------------------------------------*/
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40 #include "NptStreams.h"
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41 #include "NptRingBuffer.h"
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42
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43 /*----------------------------------------------------------------------
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44 | PLT_PipeInputStream
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45 +---------------------------------------------------------------------*/
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46 class PLT_PipeInputStream
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47 {
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48 public:
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49 // constructor and destructor
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50 virtual ~PLT_PipeInputStream() {};
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51
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52 // methods
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53 virtual NPT_Result Receive(NPT_InputStream& stream, NPT_Size max_bytes_to_read, NPT_Size* bytes_read = 0) = 0;
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54 };
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55
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56 typedef NPT_Reference<PLT_PipeInputStream> PLT_PipeInputStreamReference;
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57
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58 /*----------------------------------------------------------------------
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59 | PLT_PipeOutputStream
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60 +---------------------------------------------------------------------*/
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61 class PLT_PipeOutputStream
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62 {
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63 public:
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64 // constructor and destructor
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65 virtual ~PLT_PipeOutputStream() {};
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66
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67 // methods
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68 virtual NPT_Result Transmit(NPT_OutputStream& stream) = 0;
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69 };
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70
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71 typedef NPT_Reference<PLT_PipeOutputStream> PLT_PipeOutputStreamReference;
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72
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73 /*----------------------------------------------------------------------
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74 | PLT_StreamPump class
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75 +---------------------------------------------------------------------*/
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76 class PLT_StreamPump
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77 {
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78 public:
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79 virtual ~PLT_StreamPump();
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80
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81 protected:
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82 // methods
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83 PLT_StreamPump(NPT_Size size = 65535);
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84 NPT_Result PullData(NPT_InputStream& input, NPT_Size max_bytes_to_read);
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85 NPT_Result PushData(NPT_OutputStream& output, NPT_Size& bytes_written);
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86
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87 // members
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88 NPT_RingBuffer* m_RingBuffer;
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89 NPT_Offset m_TotalBytesRead;
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90 NPT_Offset m_TotalBytesWritten;
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91 };
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92
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93 /*----------------------------------------------------------------------
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94 | PLT_PipeInputStreamPump class
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95 +---------------------------------------------------------------------*/
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96 class PLT_PipeInputStreamPump : public PLT_StreamPump,
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97 public PLT_PipeInputStream
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98 {
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99 public:
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100 PLT_PipeInputStreamPump(NPT_OutputStreamReference& output, NPT_Size size = 65535);
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101 virtual ~PLT_PipeInputStreamPump();
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102
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103 NPT_Result Receive(NPT_InputStream& input, NPT_Size max_bytes_to_read, NPT_Size* bytes_read);
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104
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105 protected:
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106 NPT_OutputStreamReference m_Output;
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107 NPT_Result m_LastRes;
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108 };
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109
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110 /*----------------------------------------------------------------------
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111 | PLT_PipeInputStreamPump class
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112 +---------------------------------------------------------------------*/
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113 class PLT_PipeOutputStreamPump : public PLT_StreamPump,
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114 public PLT_PipeOutputStream
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115 {
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116 public:
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117 PLT_PipeOutputStreamPump(NPT_InputStreamReference& input,
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118 NPT_Size size = 65535,
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119 NPT_Size max_bytes_to_read = 0);
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120 virtual ~PLT_PipeOutputStreamPump();
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121
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122 NPT_Result Transmit(NPT_OutputStream& output);
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123
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124 protected:
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125 NPT_InputStreamReference m_Input;
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126 NPT_Size m_MaxBytesToRead;
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127 NPT_Result m_LastRes;
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128 };
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129
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130
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131 #endif // _PLT_STREAM_PUMP_H_