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<hr><h1>src/frame_impl.cpp</h1><a href="frame__impl_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// $Id: frame_impl.cpp,v 1.8 2000/10/24 07:00:09 eldamitri Exp $</font>
00002
00003 <font class="comment">// id3lib: a C++ library for creating and manipulating id3v1/v2 tags</font>
00004 <font class="comment">// Copyright 1999, 2000 Scott Thomas Haug</font>
00005
00006 <font class="comment">// This library is free software; you can redistribute it and/or modify it</font>
00007 <font class="comment">// under the terms of the GNU Library General Public License as published by</font>
00008 <font class="comment">// the Free Software Foundation; either version 2 of the License, or (at your</font>
00009 <font class="comment">// option) any later version.</font>
00010 <font class="comment">//</font>
00011 <font class="comment">// This library is distributed in the hope that it will be useful, but WITHOUT</font>
00012 <font class="comment">// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or</font>
00013 <font class="comment">// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public</font>
00014 <font class="comment">// License for more details.</font>
00015 <font class="comment">//</font>
00016 <font class="comment">// You should have received a copy of the GNU Library General Public License</font>
00017 <font class="comment">// along with this library; if not, write to the Free Software Foundation,</font>
00018 <font class="comment">// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</font>
00019
00020 <font class="comment">// The id3lib authors encourage improvements and optimisations to be sent to</font>
00021 <font class="comment">// the id3lib coordinator. Please see the README file for details on where to</font>
00022 <font class="comment">// send such submissions. See the AUTHORS file for a list of people who have</font>
00023 <font class="comment">// contributed to id3lib. See the ChangeLog file for a list of changes to</font>
00024 <font class="comment">// id3lib. These files are distributed with id3lib at</font>
00025 <font class="comment">// http://download.sourceforge.net/id3lib/</font>
00026
00027 <font class="preprocessor">#if defined HAVE_CONFIG_H</font>
00028 <font class="preprocessor"></font><font class="preprocessor">#include <config.h></font>
00029 <font class="preprocessor">#endif</font>
00030 <font class="preprocessor"></font>
00031 <font class="preprocessor">#include <string.h></font>
00032 <font class="preprocessor">#include "<a class="code" href="tag_8h.html">tag.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="frame__impl_8h.html">frame_impl.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="field__impl_8h.html">field_impl.h</a>"</font>
00035 <font class="preprocessor">#include "<a class="code" href="frame__def_8h.html">frame_def.h</a>"</font>
00036 <font class="preprocessor">#include "<a class="code" href="field__def_8h.html">field_def.h</a>"</font>
00037
<a name="l00038"></a><a class="code" href="class_i_d3___frame_impl.html#a0">00038</a> <a class="code" href="class_i_d3___frame_impl.html#a0">ID3_FrameImpl::ID3_FrameImpl</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)
00039 : _changed(false),
00040 _bitset(),
00041 _fields(),
00042 _encryption_id('\0'),
00043 _grouping_id('\0')
00044 {
00045 this-><a class="code" href="class_i_d3___frame_impl.html#a17">SetSpec</a>(<a class="code" href="globals_8h.html#a216a58">ID3V2_LATEST</a>);
00046 this-><a class="code" href="class_i_d3___frame_impl.html#a5">SetID</a>(id);
00047 }
00048
<a name="l00049"></a><a class="code" href="class_i_d3___frame_impl.html#a1">00049</a> <a class="code" href="class_i_d3___frame_impl.html#a0">ID3_FrameImpl::ID3_FrameImpl</a>(<font class="keyword">const</font> <a class="code" href="class_i_d3___frame_header.html">ID3_FrameHeader</a> &hdr)
00050 : _changed(false),
00051 _bitset(),
00052 _fields(),
00053 _hdr(hdr),
00054 _encryption_id('\0'),
00055 _grouping_id('\0')
00056 {
00057 this-><a class="code" href="class_i_d3___frame_impl.html#b2">_InitFields</a>();
00058 }
00059
<a name="l00060"></a><a class="code" href="class_i_d3___frame_impl.html#a2">00060</a> <a class="code" href="class_i_d3___frame_impl.html#a0">ID3_FrameImpl::ID3_FrameImpl</a>(<font class="keyword">const</font> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a>& frame)
00061 : _changed(false),
00062 _bitset(),
00063 _fields(),
00064 _encryption_id('\0'),
00065 _grouping_id('\0')
00066 {
00067 *<font class="keyword">this</font> = frame;
00068 }
00069
<a name="l00070"></a><a class="code" href="class_i_d3___frame_impl.html#a3">00070</a> <a class="code" href="class_i_d3___frame_impl.html#a3">ID3_FrameImpl::~ID3_FrameImpl</a>()
00071 {
00072 <a class="code" href="class_i_d3___frame_impl.html#a4">Clear</a>();
00073 }
00074
<a name="l00075"></a><a class="code" href="class_i_d3___frame_impl.html#b1">00075</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_impl.html#b1">ID3_FrameImpl::_ClearFields</a>()
00076 {
00077 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___frame_impl.html#s0">iterator</a> fi = _fields.begin(); fi != _fields.end(); ++fi)
00078 {
00079 <font class="keyword">delete</font> (<a class="code" href="class_i_d3___field_impl.html">ID3_FieldImpl</a>*) *fi;
00080 }
00081
00082 _fields.clear();
00083 _bitset.reset();
00084
00085 _changed = <font class="keyword">true</font>;
00086 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00087 }
00088
<a name="l00089"></a><a class="code" href="class_i_d3___frame_impl.html#a4">00089</a> <font class="keywordtype">void</font> <a class="code" href="class_i_d3___frame_impl.html#a4">ID3_FrameImpl::Clear</a>()
00090 {
00091 this-><a class="code" href="class_i_d3___frame_impl.html#b1">_ClearFields</a>();
00092 _hdr.<a class="code" href="class_i_d3___frame_header.html#a9">Clear</a>();
00093 _encryption_id = <font class="charliteral">'\0'</font>;
00094 _grouping_id = <font class="charliteral">'\0'</font>;
00095 }
00096
<a name="l00097"></a><a class="code" href="class_i_d3___frame_impl.html#b2">00097</a> <font class="keywordtype">void</font> <a class="code" href="class_i_d3___frame_impl.html#b2">ID3_FrameImpl::_InitFields</a>()
00098 {
00099 <font class="keyword">const</font> <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a>* info = _hdr.<a class="code" href="class_i_d3___frame_header.html#a8">GetFrameDef</a>();
00100 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a24">NULL</a> == info)
00101 {
00102 <font class="comment">// log this</font>
00103 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* fld = <font class="keyword">new</font> <a class="code" href="class_i_d3___field_impl.html">ID3_FieldImpl</a>(<a class="code" href="struct_i_d3___field_def.html#p0">ID3_FieldDef::DEFAULT</a>[0]);
00104 _fields.push_back(fld);
00105 _bitset.set(fld-><a class="code" href="class_i_d3___field.html#a28">GetID</a>());
00106 }
00107 <font class="keywordflow">else</font>
00108 {
00109
00110 <font class="keywordflow">for</font> (size_t i = 0; info-><a class="code" href="struct_i_d3___frame_def.html#m5">aeFieldDefs</a>[i].<a class="code" href="struct_i_d3___field_def.html#m0">_id</a> != <a class="code" href="globals_8h.html#a218a70">ID3FN_NOFIELD</a>; ++i)
00111 {
00112 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* fld = <font class="keyword">new</font> <a class="code" href="class_i_d3___field_impl.html">ID3_FieldImpl</a>(info-><a class="code" href="struct_i_d3___frame_def.html#m5">aeFieldDefs</a>[i]);
00113 _fields.push_back(fld);
00114 _bitset.set(fld-><a class="code" href="class_i_d3___field.html#a28">GetID</a>());
00115 }
00116
00117 _changed = <font class="keyword">true</font>;
00118 }
00119 }
00120
<a name="l00121"></a><a class="code" href="class_i_d3___frame_impl.html#a5">00121</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_impl.html#a5">ID3_FrameImpl::SetID</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)
00122 {
00123 <font class="keywordtype">bool</font> changed = (this-><a class="code" href="class_i_d3___frame_impl.html#a6">GetID</a>() != id);
00124 <font class="keywordflow">if</font> (changed)
00125 {
00126 this-><a class="code" href="class_i_d3___frame_impl.html#b0">_SetID</a>(id);
00127 _changed = <font class="keyword">true</font>;
00128 }
00129 <font class="keywordflow">return</font> changed;
00130 }
00131
<a name="l00132"></a><a class="code" href="class_i_d3___frame_impl.html#b0">00132</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_impl.html#b0">ID3_FrameImpl::_SetID</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)
00133 {
00134 <font class="keywordtype">bool</font> changed = this-><a class="code" href="class_i_d3___frame_impl.html#b1">_ClearFields</a>();
00135 changed = _hdr.<a class="code" href="class_i_d3___frame_header.html#a5">SetFrameID</a>(id) || changed;
00136 this-><a class="code" href="class_i_d3___frame_impl.html#b2">_InitFields</a>();
00137 <font class="keywordflow">return</font> changed;
00138 }
00139
<a name="l00140"></a><a class="code" href="class_i_d3___frame_impl.html#a17">00140</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_impl.html#a17">ID3_FrameImpl::SetSpec</a>(<a class="code" href="globals_8h.html#a216">ID3_V2Spec</a> spec)
00141 {
00142 <font class="keywordflow">return</font> _hdr.<a class="code" href="class_i_d3___header.html#a2">SetSpec</a>(spec);
00143 }
00144
<a name="l00145"></a><a class="code" href="class_i_d3___frame_impl.html#a18">00145</a> <a class="code" href="globals_8h.html#a216">ID3_V2Spec</a> <a class="code" href="class_i_d3___frame_impl.html#a18">ID3_FrameImpl::GetSpec</a>()<font class="keyword"> const</font>
00146 <font class="keyword"></font>{
00147 <font class="keywordflow">return</font> _hdr.<a class="code" href="class_i_d3___header.html#a3">GetSpec</a>();
00148 }
00149
<a name="l00150"></a><a class="code" href="class_i_d3___frame_impl.html#a7">00150</a> <a class="code" href="class_i_d3___field.html">ID3_Field</a>* <a class="code" href="class_i_d3___frame_impl.html#a7">ID3_FrameImpl::GetField</a>(<a class="code" href="globals_8h.html#a218">ID3_FieldID</a> fieldName)<font class="keyword"> const</font>
00151 <font class="keyword"></font>{
00152 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* field = <a class="code" href="globals_8h.html#a24">NULL</a>;
00153 <font class="keywordflow">if</font> (this-><a class="code" href="class_i_d3___frame_impl.html#a16">Contains</a>(fieldName))
00154 {
00155 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___frame_impl.html#s1">const_iterator</a> fi = _fields.begin(); fi != _fields.end(); ++fi)
00156 {
00157 <font class="keywordflow">if</font> ((*fi)->GetID() == fieldName)
00158 {
00159 field = *fi;
00160 <font class="keywordflow">break</font>;
00161 }
00162 }
00163 }
00164 <font class="keywordflow">return</font> field;
00165 }
00166
<a name="l00167"></a><a class="code" href="class_i_d3___frame_impl.html#a8">00167</a> size_t <a class="code" href="class_i_d3___frame_impl.html#a8">ID3_FrameImpl::NumFields</a>()<font class="keyword"> const</font>
00168 <font class="keyword"></font>{
00169 <font class="keywordflow">return</font> _fields.size();
00170 }
00171
<a name="l00172"></a><a class="code" href="class_i_d3___frame_impl.html#a15">00172</a> size_t <a class="code" href="class_i_d3___frame_impl.html#a15">ID3_FrameImpl::Size</a>()
00173 {
00174 size_t bytesUsed = _hdr.<a class="code" href="class_i_d3___frame_header.html#a2">Size</a>();
00175
00176 <font class="keywordflow">if</font> (this-><a class="code" href="class_i_d3___frame_impl.html#a23">GetEncryptionID</a>())
00177 {
00178 bytesUsed++;
00179 }
00180
00181 <font class="keywordflow">if</font> (this-><a class="code" href="class_i_d3___frame_impl.html#a25">GetGroupingID</a>())
00182 {
00183 bytesUsed++;
00184 }
00185
00186 <a class="code" href="globals_8h.html#a214">ID3_TextEnc</a> enc = <a class="code" href="globals_8h.html#a214a47">ID3TE_ASCII</a>;
00187 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___frame_impl.html#s0">iterator</a> fi = _fields.begin(); fi != _fields.end(); ++fi)
00188 {
00189 <font class="keywordflow">if</font> (*fi && (*fi)->InScope(this->GetSpec()))
00190 {
00191 <font class="keywordflow">if</font> ((*fi)->GetID() == <a class="code" href="globals_8h.html#a218a71">ID3FN_TEXTENC</a>)
00192 {
00193 enc = (ID3_TextEnc) (*fi)->Get();
00194 }
00195 <font class="keywordflow">else</font>
00196 {
00197 (*fi)->SetEncoding(enc);
00198 }
00199 bytesUsed += (*fi)->BinSize();
00200 }
00201 }
00202
00203 <font class="keywordflow">return</font> bytesUsed;
00204 }
00205
00206
<a name="l00207"></a><a class="code" href="class_i_d3___frame_impl.html#a12">00207</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_impl.html#a12">ID3_FrameImpl::HasChanged</a>()<font class="keyword"> const</font>
00208 <font class="keyword"></font>{
00209 <font class="keywordtype">bool</font> changed = _changed;
00210
00211 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___frame_impl.html#s1">const_iterator</a> fi = _fields.begin(); fi != _fields.end(); ++fi)
00212 {
00213 <font class="keywordflow">if</font> (*fi && (*fi)->InScope(this->GetSpec()))
00214 {
00215 changed = (*fi)->HasChanged();
00216 }
00217 }
00218
00219 <font class="keywordflow">return</font> changed;
00220 }
00221
00222 <a class="code" href="class_i_d3___frame_impl.html">ID3_FrameImpl</a> &
<a name="l00223"></a><a class="code" href="class_i_d3___frame_impl.html#a11">00223</a> <a class="code" href="class_i_d3___frame_impl.html#a11">ID3_FrameImpl::operator=</a>( <font class="keyword">const</font> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> &rFrame )
00224 {
00225 <a class="code" href="globals_8h.html#a219">ID3_FrameID</a> eID = rFrame.<a class="code" href="class_i_d3___frame.html#a5">GetID</a>();
00226 this-><a class="code" href="class_i_d3___frame_impl.html#a5">SetID</a>(eID);
00227 <a class="code" href="class_i_d3___frame_1_1_const_iterator.html">ID3_Frame::ConstIterator</a>* ri = rFrame.<a class="code" href="class_i_d3___frame.html#a25">CreateIterator</a>();
00228 <a class="code" href="class_i_d3___frame_impl.html#s0">iterator</a> li = this-><a class="code" href="class_i_d3___frame_impl.html#a26">begin</a>();
00229 <font class="keywordflow">while</font> (li != this-><a class="code" href="class_i_d3___frame_impl.html#a27">end</a>())
00230 {
00231 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* thisFld = *li++;
00232 <font class="keyword">const</font> <a class="code" href="class_i_d3___field.html">ID3_Field</a>* thatFld = ri-><a class="code" href="class_i_d3___frame_1_1_const_iterator.html#a0">GetNext</a>();
00233 <font class="keywordflow">if</font> (thisFld != <a class="code" href="globals_8h.html#a24">NULL</a> && thatFld != <a class="code" href="globals_8h.html#a24">NULL</a>)
00234 {
00235 *thisFld = *thatFld;
00236 }
00237 }
00238 <font class="keyword">delete</font> ri;
00239 this-><a class="code" href="class_i_d3___frame_impl.html#a22">SetEncryptionID</a>(rFrame.<a class="code" href="class_i_d3___frame.html#a22">GetEncryptionID</a>());
00240 this-><a class="code" href="class_i_d3___frame_impl.html#a24">SetGroupingID</a>(rFrame.<a class="code" href="class_i_d3___frame.html#a24">GetGroupingID</a>());
00241 this-><a class="code" href="class_i_d3___frame_impl.html#a19">SetCompression</a>(rFrame.<a class="code" href="class_i_d3___frame.html#a19">GetCompression</a>());
00242 this-><a class="code" href="class_i_d3___frame_impl.html#a17">SetSpec</a>(rFrame.<a class="code" href="class_i_d3___frame.html#a17">GetSpec</a>());
00243 _changed = <font class="keyword">false</font>;
00244
00245 <font class="keywordflow">return</font> *<font class="keyword">this</font>;
00246 }
00247
<a name="l00248"></a><a class="code" href="class_i_d3___frame_impl.html#d0">00248</a> <font class="keyword">const</font> <font class="keywordtype">char</font>* <a class="code" href="class_i_d3___frame_impl.html#a9">ID3_FrameImpl::GetDescription</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)
00249 {
00250 <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a>* myFrameDef = <a class="code" href="field__impl_8h.html#a19">ID3_FindFrameDef</a>(id);
00251 <font class="keywordflow">if</font> (myFrameDef != <a class="code" href="globals_8h.html#a24">NULL</a>)
00252 {
00253 <font class="keywordflow">return</font> myFrameDef-><a class="code" href="struct_i_d3___frame_def.html#m6">sDescription</a>;
00254 }
00255 <font class="keywordflow">return</font> <a class="code" href="globals_8h.html#a24">NULL</a>;
00256 }
00257
<a name="l00258"></a><a class="code" href="class_i_d3___frame_impl.html#a9">00258</a> <font class="keyword">const</font> <font class="keywordtype">char</font>* <a class="code" href="class_i_d3___frame_impl.html#a9">ID3_FrameImpl::GetDescription</a>()<font class="keyword"> const</font>
00259 <font class="keyword"></font>{
00260 <font class="keyword">const</font> <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a>* def = _hdr.<a class="code" href="class_i_d3___frame_header.html#a8">GetFrameDef</a>();
00261 <font class="keywordflow">if</font> (def)
00262 {
00263 <font class="keywordflow">return</font> def-><a class="code" href="struct_i_d3___frame_def.html#m6">sDescription</a>;
00264 }
00265 <font class="keywordflow">return</font> <a class="code" href="globals_8h.html#a24">NULL</a>;
00266 }
00267
</pre></div><hr><address><small>Generated on Thu Jan 3 07:35:55 2002 for id3lib by
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<img src="doxygen.gif" alt="doxygen" align="middle" border=0
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