1 /////////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas 4 // Digital Ltd. LLC 5 // 6 // All rights reserved. 7 // 8 // Redistribution and use in source and binary forms, with or without 9 // modification, are permitted provided that the following conditions are 10 // met: 11 // * Redistributions of source code must retain the above copyright 12 // notice, this list of conditions and the following disclaimer. 13 // * Redistributions in binary form must reproduce the above 14 // copyright notice, this list of conditions and the following disclaimer 15 // in the documentation and/or other materials provided with the 16 // distribution. 17 // * Neither the name of Industrial Light & Magic nor the names of 18 // its contributors may be used to endorse or promote products derived 19 // from this software without specific prior written permission. 20 // 21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 // 33 /////////////////////////////////////////////////////////////////////////// 34 35 36 37 //----------------------------------------------------------------------------- 38 // 39 // class ChannelListAttribute 40 // 41 //----------------------------------------------------------------------------- 42 43 #include <ImfChannelListAttribute.h> 44 45 46 namespace Imf { 47 48 namespace { 49 50 template <size_t N> 51 void checkIsNullTerminated (const char (&str)[N], const char *what) 52 { 53 for (int i = 0; i < N; ++i) { 54 if (str[i] == '\0') 55 return; 56 } 57 std::stringstream s; 58 s << "Invalid " << what << ": it is more than " << (N - 1) 59 << " characters long."; 60 throw Iex::InputExc(s); 61 } 62 63 } // namespace 64 65 template <> 66 const char * 67 ChannelListAttribute::staticTypeName () 68 { 69 return "chlist"; 70 } 71 72 73 template <> 74 void 75 ChannelListAttribute::writeValueTo (OStream &os, int) const 76 { 77 for (ChannelList::ConstIterator i = _value.begin(); 78 i != _value.end(); 79 ++i) 80 { 81 // 82 // Write name 83 // 84 85 Xdr::write <StreamIO> (os, i.name()); 86 87 // 88 // Write Channel struct 89 // 90 91 Xdr::write <StreamIO> (os, int (i.channel().type)); 92 Xdr::write <StreamIO> (os, i.channel().pLinear); 93 Xdr::pad <StreamIO> (os, 3); 94 Xdr::write <StreamIO> (os, i.channel().xSampling); 95 Xdr::write <StreamIO> (os, i.channel().ySampling); 96 } 97 98 // 99 // Write end of list marker 100 // 101 102 Xdr::write <StreamIO> (os, ""); 103 } 104 105 106 template <> 107 void 108 ChannelListAttribute::readValueFrom (IStream &is, int, int) 109 { 110 while (true) 111 { 112 // 113 // Read name; zero length name means end of channel list 114 // 115 116 char name[Name::SIZE]; 117 Xdr::read <StreamIO> (is, Name::MAX_LENGTH, name); 118 119 if (name[0] == 0) 120 break; 121 122 checkIsNullTerminated (name, "channel name"); 123 124 // 125 // Read Channel struct 126 // 127 128 int type; 129 bool pLinear; 130 int xSampling; 131 int ySampling; 132 133 Xdr::read <StreamIO> (is, type); 134 Xdr::read <StreamIO> (is, pLinear); 135 Xdr::skip <StreamIO> (is, 3); 136 Xdr::read <StreamIO> (is, xSampling); 137 Xdr::read <StreamIO> (is, ySampling); 138 139 _value.insert 140 (name, Channel (PixelType (type), xSampling, ySampling, pLinear)); 141 } 142 } 143 144 145 } // namespace Imf 146
