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<div id="projectname">libaaruformat<span id="projectnumber">&#160;1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<a href="ngcw__junk_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * This file is part of the Aaru Data Preservation Suite.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (c) 2019-2026 Natalia Portillo.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * This library is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * published by the Free Software Foundation; version 2.1 of the License.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> * This library is distributed in the hope that it will be useful, but</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> *</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * License along with this library; if not, see</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * &lt;https://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> *</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> * Nintendo GameCube/Wii junk map: serialization, deserialization, regeneration.</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment"> */</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include &lt;<a class="code" href="aaruformat_8h.html">aaruformat.h</a>&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &quot;<a class="code" href="ngcw__junk_8h.html">ngcw_junk.h</a>&quot;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">/* ---- Little-endian helpers ---- */</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600"> 30</a></span><span class="keyword">static</span> uint16_t <a class="code hl_function" href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600">read_le16</a>(<span class="keyword">const</span> uint8_t *p) { <span class="keywordflow">return</span> (uint16_t)((uint16_t)p[0] | ((uint16_t)p[1] &lt;&lt; 8)); }</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="foldopen" id="foldopen00032" data-start="{" data-end="}">
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7"> 32</a></span><span class="keyword">static</span> uint32_t <a class="code hl_function" href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7">read_le32</a>(<span class="keyword">const</span> uint8_t *p)</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span>{ <span class="keywordflow">return</span> (uint32_t)p[0] | ((uint32_t)p[1] &lt;&lt; 8) | ((uint32_t)p[2] &lt;&lt; 16) | ((uint32_t)p[3] &lt;&lt; 24); }</div>
</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a1fe4c6b6a6dd57bb096b41c34ef4dab6"> 35</a></span><span class="keyword">static</span> uint64_t <a class="code hl_function" href="ngcw__junk_8c.html#a1fe4c6b6a6dd57bb096b41c34ef4dab6">read_le64</a>(<span class="keyword">const</span> uint8_t *p) { <span class="keywordflow">return</span> (uint64_t)<a class="code hl_function" href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7">read_le32</a>(p) | ((uint64_t)<a class="code hl_function" href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7">read_le32</a>(p + 4) &lt;&lt; 32); }</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="foldopen" id="foldopen00037" data-start="{" data-end="}">
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2"> 37</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2">write_le16</a>(uint8_t *p, uint16_t v)</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span>{</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> p[0] = (uint8_t)(v &amp; 0xFF);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> p[1] = (uint8_t)((v &gt;&gt; 8) &amp; 0xFF);</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span>}</div>
</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="foldopen" id="foldopen00043" data-start="{" data-end="}">
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612"> 43</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612">write_le32</a>(uint8_t *p, uint32_t v)</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span>{</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> p[0] = (uint8_t)(v &amp; 0xFF);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> p[1] = (uint8_t)((v &gt;&gt; 8) &amp; 0xFF);</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> p[2] = (uint8_t)((v &gt;&gt; 16) &amp; 0xFF);</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> p[3] = (uint8_t)((v &gt;&gt; 24) &amp; 0xFF);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="foldopen" id="foldopen00051" data-start="{" data-end="}">
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a66d120dad3248fa03291b33257117179"> 51</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="ngcw__junk_8c.html#a66d120dad3248fa03291b33257117179">write_le64</a>(uint8_t *p, uint64_t v)</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>{</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <a class="code hl_function" href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612">write_le32</a>(p, (uint32_t)(v &amp; 0xFFFFFFFF));</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <a class="code hl_function" href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612">write_le32</a>(p + 4, (uint32_t)(v &gt;&gt; 32));</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span>}</div>
</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">/* ---- Serialization ---- */</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">/*</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment"> * Format:</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment"> * [2] version (uint16 LE)</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment"> * [4] entry_count (uint32 LE)</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment"> * [2] seed_size (uint16 LE) — NGC_LFG_SEED_SIZE (17)</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="comment"> * For each entry:</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment"> * [8] offset (uint64 LE)</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment"> * [8] length (uint64 LE)</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment"> * [2] partition_index (uint16 LE)</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment"> * [seed_size * 4] seed (raw bytes)</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment"> *</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment"> * Header = 8 bytes. Entry = 18 + seed_size * 4 = 86 bytes (when seed_size=17).</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment"> */</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038"> 73</a></span><span class="preprocessor">#define JUNK_MAP_HEADER_SIZE 8</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a0db54dfda52f4a427fd159df3bc6dda0"> 75</a></span>int32_t <a class="code hl_function" href="ngcw__junk_8c.html#a0db54dfda52f4a427fd159df3bc6dda0">ngcw_serialize_junk_map</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> *entries, uint32_t count, uint8_t **out_data, uint32_t *out_len)</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>{</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">if</span>(out_data == NULL || out_len == NULL) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> uint32_t entry_size = 18 + <a class="code hl_define" href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a> * 4;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> uint32_t size = <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a> + count * entry_size;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> uint8_t *buf = (uint8_t *)malloc(size);</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">if</span>(buf == NULL) <span class="keywordflow">return</span> -4;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <a class="code hl_function" href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2">write_le16</a>(buf, <a class="code hl_define" href="ngcw__junk_8h.html#aca5694a8ac4a72ca048d30aa3e534a6b">NGCW_JUNK_MAP_VERSION</a>);</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <a class="code hl_function" href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612">write_le32</a>(buf + 2, count);</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <a class="code hl_function" href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2">write_le16</a>(buf + 6, <a class="code hl_define" href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a>);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">for</span>(uint32_t i = 0; i &lt; count; i++)</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> {</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> uint8_t *p = buf + <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a> + i * entry_size;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_function" href="ngcw__junk_8c.html#a66d120dad3248fa03291b33257117179">write_le64</a>(p, entries[i].offset);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <a class="code hl_function" href="ngcw__junk_8c.html#a66d120dad3248fa03291b33257117179">write_le64</a>(p + 8, entries[i].length);</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <a class="code hl_function" href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2">write_le16</a>(p + 16, entries[i].partition_index);</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> memcpy(p + 18, entries[i].seed, <a class="code hl_define" href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a> * <span class="keyword">sizeof</span>(uint32_t));</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> }</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> *out_data = buf;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> *out_len = size;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span>}</div>
</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="foldopen" id="foldopen00104" data-start="{" data-end="}">
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a464c045db67240ae9c3e54fbf7d6d959"> 104</a></span>int32_t <a class="code hl_function" href="ngcw__junk_8c.html#a464c045db67240ae9c3e54fbf7d6d959">ngcw_deserialize_junk_map</a>(<span class="keyword">const</span> uint8_t *data, uint32_t data_len, <a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> **entries, uint32_t *count,</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> uint16_t *seed_size)</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span>{</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">if</span>(data == NULL || entries == NULL || count == NULL || seed_size == NULL) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keywordflow">if</span>(data_len &lt; <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a>) <span class="keywordflow">return</span> -2;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> uint16_t version = <a class="code hl_function" href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600">read_le16</a>(data);</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> uint32_t entry_cnt = <a class="code hl_function" href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7">read_le32</a>(data + 2);</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> uint16_t ss = <a class="code hl_function" href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600">read_le16</a>(data + 6);</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">if</span>(version != <a class="code hl_define" href="ngcw__junk_8h.html#aca5694a8ac4a72ca048d30aa3e534a6b">NGCW_JUNK_MAP_VERSION</a>) <span class="keywordflow">return</span> -3;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordflow">if</span>(ss != <a class="code hl_define" href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a>) <span class="keywordflow">return</span> -3;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordflow">if</span>(entry_cnt == 0)</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> {</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> *entries = NULL;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> *count = 0;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> *seed_size = ss;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> }</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> uint32_t entry_size = 18 + (uint32_t)ss * 4;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> uint32_t required = <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a> + entry_cnt * entry_size;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">if</span>(data_len &lt; required) <span class="keywordflow">return</span> -2;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> *e = (<a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> *)calloc(entry_cnt, <span class="keyword">sizeof</span>(<a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a>));</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keywordflow">if</span>(e == NULL) <span class="keywordflow">return</span> -4;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">for</span>(uint32_t i = 0; i &lt; entry_cnt; i++)</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keyword">const</span> uint8_t *p = data + <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a> + i * entry_size;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> e[i].<a class="code hl_variable" href="structNgcwJunkEntry.html#a80885eaf7c79a421d9565dbb7397fa2b">offset</a> = <a class="code hl_function" href="ngcw__junk_8c.html#a1fe4c6b6a6dd57bb096b41c34ef4dab6">read_le64</a>(p);</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> e[i].<a class="code hl_variable" href="structNgcwJunkEntry.html#a082ed622c7be36afb188f0c6f75e7127">length</a> = <a class="code hl_function" href="ngcw__junk_8c.html#a1fe4c6b6a6dd57bb096b41c34ef4dab6">read_le64</a>(p + 8);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> e[i].<a class="code hl_variable" href="structNgcwJunkEntry.html#a4ea4f27121829ac6b58029f5cea6845e">partition_index</a> = <a class="code hl_function" href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600">read_le16</a>(p + 16);</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> memcpy(e[i].seed, p + 18, ss * <span class="keyword">sizeof</span>(uint32_t));</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> }</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> *entries = e;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> *count = entry_cnt;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> *seed_size = ss;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span>}</div>
</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="comment">/* ---- Junk regeneration ---- */</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> </div>
<div class="foldopen" id="foldopen00154" data-start="{" data-end="}">
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#af61bca5a962d01d631b0a7135be54f08"> 154</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="ngcw__junk_8c.html#af61bca5a962d01d631b0a7135be54f08">ngcw_regenerate_junk_sector</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> *entries, uint32_t entry_count, uint64_t disc_offset,</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> uint8_t *output, uint32_t length)</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>{</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">if</span>(entries == NULL || entry_count == 0 || output == NULL) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="comment">/* Binary search for the entry containing disc_offset */</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordtype">int</span> lo = 0;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordtype">int</span> hi = (int)entry_count - 1;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keywordflow">while</span>(lo &lt;= hi)</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> {</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordtype">int</span> mid = lo + (hi - lo) / 2;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> uint64_t entry_end = entries[mid].<a class="code hl_variable" href="structNgcwJunkEntry.html#a80885eaf7c79a421d9565dbb7397fa2b">offset</a> + entries[mid].<a class="code hl_variable" href="structNgcwJunkEntry.html#a082ed622c7be36afb188f0c6f75e7127">length</a>;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="keywordflow">if</span>(disc_offset &gt;= entry_end)</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> lo = mid + 1;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(disc_offset &lt; entries[mid].offset)</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> hi = mid - 1;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="comment">/* Found: disc_offset is within entries[mid].</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span><span class="comment"> * The seed&#39;s position 0 corresponds to the start of the 0x8000-aligned</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span><span class="comment"> * block, not entries[mid].offset (which is the start of the junk region).</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span><span class="comment"> * Compute advance from the block start. */</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> uint64_t block_start = entries[mid].<a class="code hl_variable" href="structNgcwJunkEntry.html#a80885eaf7c79a421d9565dbb7397fa2b">offset</a> &amp; ~(uint64_t)0x7FFF;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> uint64_t stream_pos = disc_offset - block_start;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">struct </span><a class="code hl_struct" href="structngc__lfg__ctx.html">ngc_lfg_ctx</a> lfg;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> uint32_t seed_copy[<a class="code hl_define" href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a>];</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> memcpy(seed_copy, entries[mid].seed, <span class="keyword">sizeof</span>(seed_copy));</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <a class="code hl_function" href="lfg_8c.html#abc583da3bb66cab3eafc3496bc46e193">ngc_lfg_set_seed</a>(&amp;lfg, seed_copy);</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">/* Advance LFG to the correct stream position */</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keywordflow">if</span>(stream_pos &gt; 0)</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> {</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> uint8_t discard[4096];</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="keywordtype">size_t</span> rem = (size_t)stream_pos;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="keywordflow">while</span>(rem &gt; 0)</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> {</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keywordtype">size_t</span> step = rem &gt; <span class="keyword">sizeof</span>(discard) ? <span class="keyword">sizeof</span>(discard) : rem;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <a class="code hl_function" href="lfg_8c.html#a25e6df5ee051a324d943185f193d3418">ngc_lfg_get_bytes</a>(&amp;lfg, discard, step);</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> rem -= step;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> }</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> }</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> </div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="comment">/* Generate the requested bytes */</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <a class="code hl_function" href="lfg_8c.html#a25e6df5ee051a324d943185f193d3418">ngc_lfg_get_bytes</a>(&amp;lfg, output, length);</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> }</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> }</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keywordflow">return</span> -1; <span class="comment">/* Not found */</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span>}</div>
</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> </div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="comment">/* ---- Lazy initialization ---- */</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="foldopen" id="foldopen00211" data-start="{" data-end="}">
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"><a class="line" href="ngcw__junk_8c.html#a8aae28231f89db161998f42c61b2e246"> 211</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="ngcw__junk_8c.html#a8aae28231f89db161998f42c61b2e246">ngcw_junk_lazy_init</a>(<a class="code hl_struct" href="structaaruformat__context.html">aaruformat_context</a> *ctx)</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span>{</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">if</span>(ctx == NULL) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keywordflow">if</span>(ctx-&gt;<a class="code hl_variable" href="structaaruformat__context.html#a369261f4f02c9997195c062ba7940468">ngcw_junk_entries</a> != NULL) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <a class="code hl_struct" href="structmediaTagEntry.html">mediaTagEntry</a> *item = NULL;</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> int32_t tag = <a class="code hl_enumvalue" href="group__MediaTags.html#ggabdd09c559df8f34ae68fcb2ff1892ebeac4a3ad4a1cde00363eeeb6894864a902">kMediaTagNgcwJunkMap</a>;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> HASH_FIND_INT(ctx-&gt;<a class="code hl_variable" href="structaaruformat__context.html#a8b769e9fb9467aa11d4a2936cf5cf5ed">mediaTags</a>, &amp;tag, item);</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keywordflow">if</span>(item == NULL || item-&gt;<a class="code hl_variable" href="structmediaTagEntry.html#aa96c6684fd98145d0089d72957d2afa7">length</a> &lt; <a class="code hl_define" href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a>) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <a class="code hl_struct" href="structNgcwJunkEntry.html">NgcwJunkEntry</a> *entries = NULL;</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> uint32_t count = 0;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> uint16_t seed_size = 0;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keywordflow">if</span>(<a class="code hl_function" href="ngcw__junk_8c.html#a464c045db67240ae9c3e54fbf7d6d959">ngcw_deserialize_junk_map</a>(item-&gt;<a class="code hl_variable" href="structmediaTagEntry.html#a334fc65b37efdfb624e804e98c398927">data</a>, item-&gt;<a class="code hl_variable" href="structmediaTagEntry.html#aa96c6684fd98145d0089d72957d2afa7">length</a>, &amp;entries, &amp;count, &amp;seed_size) == 0)</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> {</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> ctx-&gt;<a class="code hl_variable" href="structaaruformat__context.html#a369261f4f02c9997195c062ba7940468">ngcw_junk_entries</a> = entries;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> ctx-&gt;<a class="code hl_variable" href="structaaruformat__context.html#a9307ffe59ce5d5b4f6c9c9a63b0ef70d">ngcw_junk_entry_count</a> = count;</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> ctx-&gt;<a class="code hl_variable" href="structaaruformat__context.html#a20d89d35a44654862f6aecac1f7237c6">ngcw_junk_seed_size</a> = seed_size;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> }</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span>}</div>
</div>
<div class="ttc" id="aaaruformat_8h_html"><div class="ttname"><a href="aaruformat_8h.html">aaruformat.h</a></div></div>
<div class="ttc" id="agroup__MediaTags_html_ggabdd09c559df8f34ae68fcb2ff1892ebeac4a3ad4a1cde00363eeeb6894864a902"><div class="ttname"><a href="group__MediaTags.html#ggabdd09c559df8f34ae68fcb2ff1892ebeac4a3ad4a1cde00363eeeb6894864a902">kMediaTagNgcwJunkMap</a></div><div class="ttdeci">@ kMediaTagNgcwJunkMap</div><div class="ttdoc">Nintendo GameCube/Wii junk region map with LFG seeds.</div><div class="ttdef"><b>Definition</b> <a href="aaru_8h_source.html#l01087">aaru.h:1087</a></div></div>
<div class="ttc" id="alfg_8c_html_a25e6df5ee051a324d943185f193d3418"><div class="ttname"><a href="lfg_8c.html#a25e6df5ee051a324d943185f193d3418">ngc_lfg_get_bytes</a></div><div class="ttdeci">void ngc_lfg_get_bytes(struct ngc_lfg_ctx *ctx, uint8_t *out, size_t count)</div><div class="ttdoc">Generate count bytes of junk data into out.</div><div class="ttdef"><b>Definition</b> <a href="lfg_8c_source.html#l00082">lfg.c:82</a></div></div>
<div class="ttc" id="alfg_8c_html_abc583da3bb66cab3eafc3496bc46e193"><div class="ttname"><a href="lfg_8c.html#abc583da3bb66cab3eafc3496bc46e193">ngc_lfg_set_seed</a></div><div class="ttdeci">void ngc_lfg_set_seed(struct ngc_lfg_ctx *ctx, const uint32_t seed[17])</div><div class="ttdoc">Initialize the LFG from a 17-word big-endian seed.</div><div class="ttdef"><b>Definition</b> <a href="lfg_8c_source.html#l00073">lfg.c:73</a></div></div>
<div class="ttc" id="alfg_8h_html_a2c4db3d8d295f706dcacc8a4d039beed"><div class="ttname"><a href="lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed">NGC_LFG_SEED_SIZE</a></div><div class="ttdeci">#define NGC_LFG_SEED_SIZE</div><div class="ttdoc">Number of uint32 words needed to seed the LFG.</div><div class="ttdef"><b>Definition</b> <a href="lfg_8h_source.html#l00036">lfg.h:36</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a0db54dfda52f4a427fd159df3bc6dda0"><div class="ttname"><a href="ngcw__junk_8c.html#a0db54dfda52f4a427fd159df3bc6dda0">ngcw_serialize_junk_map</a></div><div class="ttdeci">int32_t ngcw_serialize_junk_map(const NgcwJunkEntry *entries, uint32_t count, uint8_t **out_data, uint32_t *out_len)</div><div class="ttdoc">Serialize a junk map for storage as a media tag.</div><div class="ttdef"><b>Definition</b> <a href="#l00075">ngcw_junk.c:75</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a1fe4c6b6a6dd57bb096b41c34ef4dab6"><div class="ttname"><a href="ngcw__junk_8c.html#a1fe4c6b6a6dd57bb096b41c34ef4dab6">read_le64</a></div><div class="ttdeci">static uint64_t read_le64(const uint8_t *p)</div><div class="ttdef"><b>Definition</b> <a href="#l00035">ngcw_junk.c:35</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a2e85418928614df336b5df9f3c28cbc7"><div class="ttname"><a href="ngcw__junk_8c.html#a2e85418928614df336b5df9f3c28cbc7">read_le32</a></div><div class="ttdeci">static uint32_t read_le32(const uint8_t *p)</div><div class="ttdef"><b>Definition</b> <a href="#l00032">ngcw_junk.c:32</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a464c045db67240ae9c3e54fbf7d6d959"><div class="ttname"><a href="ngcw__junk_8c.html#a464c045db67240ae9c3e54fbf7d6d959">ngcw_deserialize_junk_map</a></div><div class="ttdeci">int32_t ngcw_deserialize_junk_map(const uint8_t *data, uint32_t data_len, NgcwJunkEntry **entries, uint32_t *count, uint16_t *seed_size)</div><div class="ttdoc">Deserialize a junk map from a media tag buffer.</div><div class="ttdef"><b>Definition</b> <a href="#l00104">ngcw_junk.c:104</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a4ed80664538efb908d3c161aec613612"><div class="ttname"><a href="ngcw__junk_8c.html#a4ed80664538efb908d3c161aec613612">write_le32</a></div><div class="ttdeci">static void write_le32(uint8_t *p, uint32_t v)</div><div class="ttdef"><b>Definition</b> <a href="#l00043">ngcw_junk.c:43</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a60ef541d064f1d10e028b1dd4731daa2"><div class="ttname"><a href="ngcw__junk_8c.html#a60ef541d064f1d10e028b1dd4731daa2">write_le16</a></div><div class="ttdeci">static void write_le16(uint8_t *p, uint16_t v)</div><div class="ttdef"><b>Definition</b> <a href="#l00037">ngcw_junk.c:37</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a66d120dad3248fa03291b33257117179"><div class="ttname"><a href="ngcw__junk_8c.html#a66d120dad3248fa03291b33257117179">write_le64</a></div><div class="ttdeci">static void write_le64(uint8_t *p, uint64_t v)</div><div class="ttdef"><b>Definition</b> <a href="#l00051">ngcw_junk.c:51</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a78cd506368a82afeae08f11175c0f038"><div class="ttname"><a href="ngcw__junk_8c.html#a78cd506368a82afeae08f11175c0f038">JUNK_MAP_HEADER_SIZE</a></div><div class="ttdeci">#define JUNK_MAP_HEADER_SIZE</div><div class="ttdef"><b>Definition</b> <a href="#l00073">ngcw_junk.c:73</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a8aae28231f89db161998f42c61b2e246"><div class="ttname"><a href="ngcw__junk_8c.html#a8aae28231f89db161998f42c61b2e246">ngcw_junk_lazy_init</a></div><div class="ttdeci">void ngcw_junk_lazy_init(aaruformat_context *ctx)</div><div class="ttdoc">Lazy initialization: load junk map from media tags.</div><div class="ttdef"><b>Definition</b> <a href="#l00211">ngcw_junk.c:211</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_a9f619d23d647df34dd36aaca29e9c600"><div class="ttname"><a href="ngcw__junk_8c.html#a9f619d23d647df34dd36aaca29e9c600">read_le16</a></div><div class="ttdeci">static uint16_t read_le16(const uint8_t *p)</div><div class="ttdef"><b>Definition</b> <a href="#l00030">ngcw_junk.c:30</a></div></div>
<div class="ttc" id="angcw__junk_8c_html_af61bca5a962d01d631b0a7135be54f08"><div class="ttname"><a href="ngcw__junk_8c.html#af61bca5a962d01d631b0a7135be54f08">ngcw_regenerate_junk_sector</a></div><div class="ttdeci">int ngcw_regenerate_junk_sector(const NgcwJunkEntry *entries, uint32_t entry_count, uint64_t disc_offset, uint8_t *output, uint32_t length)</div><div class="ttdoc">Regenerate a junk sector from the junk map.</div><div class="ttdef"><b>Definition</b> <a href="#l00154">ngcw_junk.c:154</a></div></div>
<div class="ttc" id="angcw__junk_8h_html"><div class="ttname"><a href="ngcw__junk_8h.html">ngcw_junk.h</a></div></div>
<div class="ttc" id="angcw__junk_8h_html_aca5694a8ac4a72ca048d30aa3e534a6b"><div class="ttname"><a href="ngcw__junk_8h.html#aca5694a8ac4a72ca048d30aa3e534a6b">NGCW_JUNK_MAP_VERSION</a></div><div class="ttdeci">#define NGCW_JUNK_MAP_VERSION</div><div class="ttdoc">Current junk map serialization version.</div><div class="ttdef"><b>Definition</b> <a href="ngcw__junk_8h_source.html#l00040">ngcw_junk.h:40</a></div></div>
<div class="ttc" id="astructNgcwJunkEntry_html"><div class="ttname"><a href="structNgcwJunkEntry.html">NgcwJunkEntry</a></div><div class="ttdoc">In-memory junk map entry.</div><div class="ttdef"><b>Definition</b> <a href="ngcw__junk_8h_source.html#l00047">ngcw_junk.h:48</a></div></div>
<div class="ttc" id="astructNgcwJunkEntry_html_a082ed622c7be36afb188f0c6f75e7127"><div class="ttname"><a href="structNgcwJunkEntry.html#a082ed622c7be36afb188f0c6f75e7127">NgcwJunkEntry::length</a></div><div class="ttdeci">uint64_t length</div><div class="ttdoc">Length of junk region in bytes.</div><div class="ttdef"><b>Definition</b> <a href="ngcw__junk_8h_source.html#l00050">ngcw_junk.h:50</a></div></div>
<div class="ttc" id="astructNgcwJunkEntry_html_a4ea4f27121829ac6b58029f5cea6845e"><div class="ttname"><a href="structNgcwJunkEntry.html#a4ea4f27121829ac6b58029f5cea6845e">NgcwJunkEntry::partition_index</a></div><div class="ttdeci">uint16_t partition_index</div><div class="ttdoc">Partition index (0xFFFF for GC / inter-partition).</div><div class="ttdef"><b>Definition</b> <a href="ngcw__junk_8h_source.html#l00051">ngcw_junk.h:51</a></div></div>
<div class="ttc" id="astructNgcwJunkEntry_html_a80885eaf7c79a421d9565dbb7397fa2b"><div class="ttname"><a href="structNgcwJunkEntry.html#a80885eaf7c79a421d9565dbb7397fa2b">NgcwJunkEntry::offset</a></div><div class="ttdeci">uint64_t offset</div><div class="ttdoc">Disc byte offset where junk starts.</div><div class="ttdef"><b>Definition</b> <a href="ngcw__junk_8h_source.html#l00049">ngcw_junk.h:49</a></div></div>
<div class="ttc" id="astructaaruformat__context_html"><div class="ttname"><a href="structaaruformat__context.html">aaruformat_context</a></div><div class="ttdoc">Master context representing an open or in‑creation Aaru image.</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00174">context.h:175</a></div></div>
<div class="ttc" id="astructaaruformat__context_html_a20d89d35a44654862f6aecac1f7237c6"><div class="ttname"><a href="structaaruformat__context.html#a20d89d35a44654862f6aecac1f7237c6">aaruformat_context::ngcw_junk_seed_size</a></div><div class="ttdeci">uint16_t ngcw_junk_seed_size</div><div class="ttdoc">LFG seed size in uint32 words (expected: 17).</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00366">context.h:366</a></div></div>
<div class="ttc" id="astructaaruformat__context_html_a369261f4f02c9997195c062ba7940468"><div class="ttname"><a href="structaaruformat__context.html#a369261f4f02c9997195c062ba7940468">aaruformat_context::ngcw_junk_entries</a></div><div class="ttdeci">void * ngcw_junk_entries</div><div class="ttdoc">Parsed NgcwJunkEntry array, NULL if not loaded.</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00364">context.h:364</a></div></div>
<div class="ttc" id="astructaaruformat__context_html_a8b769e9fb9467aa11d4a2936cf5cf5ed"><div class="ttname"><a href="structaaruformat__context.html#a8b769e9fb9467aa11d4a2936cf5cf5ed">aaruformat_context::mediaTags</a></div><div class="ttdeci">mediaTagEntry * mediaTags</div><div class="ttdoc">Hash table of extra media tags (uthash root).</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00267">context.h:267</a></div></div>
<div class="ttc" id="astructaaruformat__context_html_a9307ffe59ce5d5b4f6c9c9a63b0ef70d"><div class="ttname"><a href="structaaruformat__context.html#a9307ffe59ce5d5b4f6c9c9a63b0ef70d">aaruformat_context::ngcw_junk_entry_count</a></div><div class="ttdeci">uint32_t ngcw_junk_entry_count</div><div class="ttdoc">Number of junk entries.</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00365">context.h:365</a></div></div>
<div class="ttc" id="astructmediaTagEntry_html"><div class="ttname"><a href="structmediaTagEntry.html">mediaTagEntry</a></div><div class="ttdoc">Hash table entry for an arbitrary media tag (e.g., proprietary drive/medium descriptor).</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00121">context.h:122</a></div></div>
<div class="ttc" id="astructmediaTagEntry_html_a334fc65b37efdfb624e804e98c398927"><div class="ttname"><a href="structmediaTagEntry.html#a334fc65b37efdfb624e804e98c398927">mediaTagEntry::data</a></div><div class="ttdeci">uint8_t * data</div><div class="ttdoc">Tag data blob (opaque to library core); length bytes long.</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00123">context.h:123</a></div></div>
<div class="ttc" id="astructmediaTagEntry_html_aa96c6684fd98145d0089d72957d2afa7"><div class="ttname"><a href="structmediaTagEntry.html#aa96c6684fd98145d0089d72957d2afa7">mediaTagEntry::length</a></div><div class="ttdeci">uint32_t length</div><div class="ttdoc">Length in bytes of data.</div><div class="ttdef"><b>Definition</b> <a href="context_8h_source.html#l00125">context.h:125</a></div></div>
<div class="ttc" id="astructngc__lfg__ctx_html"><div class="ttname"><a href="structngc__lfg__ctx.html">ngc_lfg_ctx</a></div><div class="ttdoc">LFG context holding the 521-word circular buffer and byte position.</div><div class="ttdef"><b>Definition</b> <a href="lfg_8h_source.html#l00041">lfg.h:42</a></div></div>
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