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<hr><h1>src/header_frame.cpp</h1><a href="header__frame_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// $Id: header_frame.cpp,v 1.20 2000/10/29 01:37:29 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
00032
00033 <font class="preprocessor">#include <string.h></font>
00034 <font class="preprocessor">#include <memory.h></font>
00035 <font class="preprocessor">#include "<a class="code" href="header__frame_8h.html">header_frame.h</a>"</font>
00036 <font class="preprocessor">#include "utils.h"</font>
00037 <font class="preprocessor">#include "<a class="code" href="frame__def_8h.html">frame_def.h</a>"</font>
00038 <font class="preprocessor">#include "<a class="code" href="field__def_8h.html">field_def.h</a>"</font>
00039 <font class="preprocessor">#include "<a class="code" href="field__impl_8h.html">field_impl.h</a>"</font>
00040 <font class="preprocessor">#include "io_helpers.h"</font>
00041
00042 <font class="keyword">using</font> <font class="keyword">namespace </font>dami;
00043
<a name="l00044"></a><a class="code" href="class_i_d3___frame_header.html#b1">00044</a> <font class="keywordtype">void</font> <a class="code" href="class_i_d3___frame_header.html#b1">ID3_FrameHeader::SetUnknownFrame</a>(<font class="keyword">const</font> <font class="keywordtype">char</font>* id)
00045 {
00046 <a class="code" href="class_i_d3___frame_header.html#a9">Clear</a>();
00047 _frame_def = <font class="keyword">new</font> <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a>;
00048 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a24">NULL</a> == _frame_def)
00049 {
00050 <font class="comment">// log this;</font>
00051 <font class="keywordflow">return</font>;
00052 }
00053 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m0">eID</a> = <a class="code" href="globals_8h.html#a219a95">ID3FID_NOFRAME</a>;
00054 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m3">bTagDiscard</a> = <font class="keyword">false</font>;
00055 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m4">bFileDiscard</a> = <font class="keyword">false</font>;
00056 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m5">aeFieldDefs</a> = <a class="code" href="struct_i_d3___field_def.html#p0">ID3_FieldDef::DEFAULT</a>;
00057 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m6">sDescription</a> = <a class="code" href="globals_8h.html#a24">NULL</a>;
00058 <font class="keywordflow">if</font> (strlen(id) <= 3)
00059 {
00060 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>, id);
00061 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>, <font class="stringliteral">""</font>);
00062 }
00063 <font class="keywordflow">else</font>
00064 {
00065 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>, id);
00066 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>, <font class="stringliteral">""</font>);
00067 }
00068 _dyn_frame_def = <font class="keyword">true</font>;
00069 }
00070
<a name="l00071"></a><a class="code" href="class_i_d3___frame_header.html#a5">00071</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_header.html#a5">ID3_FrameHeader::SetFrameID</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)
00072 {
00073 <font class="keywordflow">if</font> (id == <a class="code" href="globals_8h.html#a219a95">ID3FID_NOFRAME</a> || id == this-><a class="code" href="class_i_d3___frame_header.html#a6">GetFrameID</a>())
00074 {
00075 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00076 }
00077 _frame_def = <a class="code" href="field__impl_8h.html#a19">ID3_FindFrameDef</a>(id);
00078 <a class="code" href="class_i_d3___header.html#n2">_flags</a>.<a class="code" href="class_i_d3___flags.html#a4">set</a>(<a class="code" href="class_i_d3___frame_header.html#s6s0">TAGALTER</a>, _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m3">bTagDiscard</a>);
00079 <a class="code" href="class_i_d3___header.html#n2">_flags</a>.<a class="code" href="class_i_d3___flags.html#a4">set</a>(<a class="code" href="class_i_d3___frame_header.html#s6s1">FILEALTER</a>, _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m4">bFileDiscard</a>);
00080
00081 <a class="code" href="class_i_d3___header.html#n4">_changed</a> = <font class="keyword">true</font>;
00082 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00083 }
00084
<a name="l00085"></a><a class="code" href="class_i_d3___frame_header.html#a2">00085</a> size_t <a class="code" href="class_i_d3___frame_header.html#a2">ID3_FrameHeader::Size</a>()<font class="keyword"> const</font>
00086 <font class="keyword"></font>{
00087 <font class="keywordflow">if</font> (!<a class="code" href="class_i_d3___header.html#n3">_info</a>)
00088 {
00089 <font class="keywordflow">return</font> 0;
00090 }
00091 <font class="keywordflow">return</font>
00092 <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_id +
00093 <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_size +
00094 <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_flags;
00095 }
00096
<a name="l00097"></a><a class="code" href="class_i_d3___frame_header.html#a3">00097</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_header.html#a3">ID3_FrameHeader::Parse</a>(<a class="code" href="class_i_d3___reader.html">ID3_Reader</a>& reader)
00098 {
00099 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse(): getCur() = "</font> << reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>() );
00100 io::ExitTrigger et(reader);
00101 <font class="keywordflow">if</font> (!<a class="code" href="class_i_d3___header.html#n3">_info</a>)
00102 {
00103 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00104 }
00105 <font class="keywordflow">if</font> (reader.<a class="code" href="class_i_d3___reader.html#a2">getEnd</a>() < reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>() + 10)
00106 {
00107 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00108 }
00109
00110 String textID = io::readText(reader, <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_id);
00111
00112 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: textID = "</font> << textID );
00113 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: getCur() = "</font> << reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>() );
00114
00115 <a class="code" href="globals_8h.html#a219">ID3_FrameID</a> fid = <a class="code" href="field__impl_8h.html#a20">ID3_FindFrameID</a>(textID.c_str());
00116 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a219a95">ID3FID_NOFRAME</a> == fid)
00117 {
00118 this-><a class="code" href="class_i_d3___frame_header.html#b1">SetUnknownFrame</a>(textID.c_str());
00119 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: unknown frame id"</font> );
00120 }
00121 <font class="keywordflow">else</font>
00122 {
00123 this-><a class="code" href="class_i_d3___frame_header.html#a5">SetFrameID</a>(fid);
00124 }
00125
00126 <a class="code" href="sized__types_8h.html#a4">uint32</a> dataSize = io::readBENumber(reader, <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_size);
00127 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: dataSize = "</font> << dataSize );
00128 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: getCur() = "</font> << reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>() );
00129 this-><a class="code" href="class_i_d3___header.html#a4">SetDataSize</a>(dataSize);
00130
00131 <a class="code" href="sized__types_8h.html#a4">uint32</a> flags = io::readBENumber(reader, <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_flags);
00132 <a class="code" href="class_i_d3___header.html#n2">_flags</a>.<a class="code" href="class_i_d3___flags.html#a5">add</a>(flags);
00133
00134 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: flags = "</font> << flags );
00135 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Parse: getCur() = "</font> << reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>() );
00136 et.setExitPos(reader.<a class="code" href="class_i_d3___reader.html#a3">getCur</a>());
00137
00138 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00139 }
00140
<a name="l00141"></a><a class="code" href="class_i_d3___frame_header.html#a4">00141</a> <font class="keywordtype">void</font> <a class="code" href="class_i_d3___frame_header.html#a4">ID3_FrameHeader::Render</a>(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer)<font class="keyword"> const</font>
00142 <font class="keyword"></font>{
00143 size_t size = 0;
00144
00145 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a24">NULL</a> == _frame_def)
00146 {
00147 <font class="comment">// TODO: log this</font>
00148 ID3D_WARNING( <font class="stringliteral">"ID3_FrameHeader::Render(): _frame_def is NULL!"</font> );
00149 <font class="keywordflow">return</font>;
00150 <font class="comment">//ID3_THROW(ID3E_InvalidFrameID);</font>
00151 }
00152 <font class="keywordtype">char</font> *textID;
00153 <font class="keywordflow">if</font> (<a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_id == strlen(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>))
00154 {
00155 textID = _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>;
00156 }
00157 <font class="keywordflow">else</font>
00158 {
00159 textID = _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>;
00160 }
00161
00162 ID3D_NOTICE( <font class="stringliteral">"ID3_FrameHeader::Render(): writing "</font> << textID << <font class="stringliteral">", "</font> << (<font class="keywordtype">int</font>) <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_size << <font class="stringliteral">" bytes"</font>);
00163 writer.<a class="code" href="class_i_d3___writer.html#a8">writeChars</a>((<a class="code" href="globals_8h.html#a33">uchar</a> *) textID, <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_id);
00164
00165 io::writeBENumber(writer, <a class="code" href="class_i_d3___header.html#n1">_data_size</a>, <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_size);
00166 io::writeBENumber(writer, <a class="code" href="class_i_d3___header.html#n2">_flags</a>.<a class="code" href="class_i_d3___flags.html#a2">get</a>(), <a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_flags);
00167 }
00168
<a name="l00169"></a><a class="code" href="class_i_d3___frame_header.html#a7">00169</a> <font class="keyword">const</font> <font class="keywordtype">char</font>* <a class="code" href="class_i_d3___frame_header.html#a7">ID3_FrameHeader::GetTextID</a>()<font class="keyword"> const</font>
00170 <font class="keyword"></font>{
00171 <font class="keywordtype">char</font> *textID = <font class="stringliteral">""</font>;
00172 <font class="keywordflow">if</font> (<a class="code" href="class_i_d3___header.html#n3">_info</a> && _frame_def)
00173 {
00174 <font class="keywordflow">if</font> (<a class="code" href="class_i_d3___header.html#n3">_info</a>->frame_bytes_id == strlen(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>))
00175 {
00176 textID = _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>;
00177 }
00178 <font class="keywordflow">else</font>
00179 {
00180 textID = _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>;
00181 }
00182 }
00183 <font class="keywordflow">return</font> textID;
00184 }
00185
<a name="l00186"></a><a class="code" href="class_i_d3___frame_header.html#a10">00186</a> <a class="code" href="class_i_d3___frame_header.html">ID3_FrameHeader</a>& <a class="code" href="class_i_d3___frame_header.html#a10">ID3_FrameHeader::operator=</a>(<font class="keyword">const</font> <a class="code" href="class_i_d3___frame_header.html">ID3_FrameHeader</a>& hdr)
00187 {
00188 <font class="keywordflow">if</font> (<font class="keyword">this</font> != &hdr)
00189 {
00190 this-><a class="code" href="class_i_d3___frame_header.html#a9">Clear</a>();
00191 this-><a class="code" href="class_i_d3___header.html#a10">ID3_Header::operator=</a>(hdr);
00192 <font class="keywordflow">if</font> (!hdr.<a class="code" href="class_i_d3___frame_header.html#o1">_dyn_frame_def</a>)
00193 {
00194 _frame_def = hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>;
00195 }
00196 <font class="keywordflow">else</font>
00197 {
00198 _frame_def = <font class="keyword">new</font> <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a>;
00199 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a24">NULL</a> == _frame_def)
00200 {
00201 <font class="comment">// TODO: throw something here...</font>
00202 }
00203 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m0">eID</a> = hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m0">eID</a>;
00204 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m3">bTagDiscard</a> = hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m3">bTagDiscard</a>;
00205 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m4">bFileDiscard</a> = hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m4">bFileDiscard</a>;
00206 _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m5">aeFieldDefs</a> = hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m5">aeFieldDefs</a>;
00207 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>, hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m1">sShortTextID</a>);
00208 strcpy(_frame_def-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>, hdr.<a class="code" href="class_i_d3___frame_header.html#o0">_frame_def</a>-><a class="code" href="struct_i_d3___frame_def.html#m2">sLongTextID</a>);
00209 _dyn_frame_def = <font class="keyword">true</font>;
00210 }
00211 }
00212 <font class="keywordflow">return</font> *<font class="keyword">this</font>;
00213 }
00214
<a name="l00215"></a><a class="code" href="class_i_d3___frame_header.html#a6">00215</a> <a class="code" href="globals_8h.html#a219">ID3_FrameID</a> <a class="code" href="class_i_d3___frame_header.html#a6">ID3_FrameHeader::GetFrameID</a>()<font class="keyword"> const</font>
00216 <font class="keyword"></font>{
00217 <a class="code" href="globals_8h.html#a219">ID3_FrameID</a> eID = <a class="code" href="globals_8h.html#a219a95">ID3FID_NOFRAME</a>;
00218 <font class="keywordflow">if</font> (<a class="code" href="globals_8h.html#a24">NULL</a> != _frame_def)
00219 {
00220 eID = _frame_def-><a class="code" href="struct_i_d3___frame_def.html#m0">eID</a>;
00221 }
00222
00223 <font class="keywordflow">return</font> eID;
00224 }
00225
<a name="l00226"></a><a class="code" href="class_i_d3___frame_header.html#a8">00226</a> <font class="keyword">const</font> <a class="code" href="struct_i_d3___frame_def.html">ID3_FrameDef</a> *<a class="code" href="class_i_d3___frame_header.html#a8">ID3_FrameHeader::GetFrameDef</a>()<font class="keyword"> const</font>
00227 <font class="keyword"></font>{
00228 <font class="keywordflow">return</font> _frame_def;
00229 }
00230
<a name="l00231"></a><a class="code" href="class_i_d3___frame_header.html#a9">00231</a> <font class="keywordtype">bool</font> <a class="code" href="class_i_d3___frame_header.html#a9">ID3_FrameHeader::Clear</a>()
00232 {
00233 <font class="keywordtype">bool</font> changed = this-><a class="code" href="class_i_d3___header.html#a6">ID3_Header::Clear</a>();
00234 <font class="keywordflow">if</font> (_dyn_frame_def)
00235 {
00236 <font class="keyword">delete</font> _frame_def;
00237 _dyn_frame_def = <font class="keyword">false</font>;
00238 changed = <font class="keyword">true</font>;
00239 }
00240 <font class="keywordflow">if</font> (_frame_def)
00241 {
00242 _frame_def = <a class="code" href="globals_8h.html#a24">NULL</a>;
00243 changed = <font class="keyword">true</font>;
00244 }
00245 <font class="keywordflow">return</font> changed;
00246 }
</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
width=110 height=53></a>1.2.12 written by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>,
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