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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * libopenraw - unpack.cpp</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2008-2016 Hubert Figuiere</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Copyright (C) 2008 Novell, Inc.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * This library is free software: you can redistribute it and/or</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public License</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * as published by the Free Software Foundation, either version 3 of</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * the License, or (at your option) any later version.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * Lesser General Public License for more details.</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * License along with this library. If not, see</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <assert.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <libopenraw/consts.h></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "unpack.hpp"</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "trace.hpp"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "ifd.hpp"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span><a class="code" href="namespaceOpenRaw.html">OpenRaw</a> {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span>Internals {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">using namespace </span><a class="code" href="namespaceDebug.html">Debug</a>;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> Unpack::Unpack(uint32_t w, uint32_t t)</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  : m_w(w), m_type(t)</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> {</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> }</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">/* Return the size of an image row. */</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keywordtype">size_t</span> Unpack::block_size()</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">size_t</span> bs;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span>(m_type == IFD::COMPRESS_NIKON_PACK) {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  bs = (m_w / 2 * 3) + (m_w / 10);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">else</span> {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  bs = m_w / 2 * 3;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> bs;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classOpenRaw_1_1Internals_1_1Unpack.html#a4b5ed45e7b1b45c6df50f0eadd984684"> 58</a></span> or_error Unpack::unpack_be12to16(uint8_t *dest, <span class="keywordtype">size_t</span> destsize, <span class="keyword">const</span> uint8_t *src,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">size_t</span> size, <span class="keywordtype">size_t</span> & out)</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  or_error err = OR_ERROR_NONE;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  uint16_t *dest16 = <span class="keyword">reinterpret_cast<</span>uint16_t *<span class="keyword">></span>(dest);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">size_t</span> pad = (m_type == IFD::COMPRESS_NIKON_PACK) ? 1 : 0;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">size_t</span> n = size / (15 + pad);</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">size_t</span> rest = size % (15 + pad);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">size_t</span> ret = n * 20 + rest / 3 * 4;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  out = 0;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">/* The inner loop advances 10 columns, which corresponds to 15 input</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> bytes, 20 output bytes and, in a Nikon pack, one padding byte.*/</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (pad) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> ((size % 16) != 0) {</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  LOGERR(<span class="stringliteral">"be12to16 incorrect padding.\n"</span>);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> OR_ERROR_DECOMPRESSION;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> ((rest % 3) != 0) {</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  LOGERR(<span class="stringliteral">"be12to16 incorrect rest.\n"</span>);</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> OR_ERROR_DECOMPRESSION;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < n + 1; i++) {</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">size_t</span> m = (i == n) ? rest / 3 : 5;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span>((reinterpret_cast<uint8_t *>(dest16) - dest) + (m * 4) > destsize) {</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  err = OR_ERROR_DECOMPRESSION;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  LOGERR(<span class="stringliteral">"overflow !\n"</span>);</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> j = 0; j < m; j++) {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">/* Read 3 bytes */</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  uint32_t t = *src++;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  t <<= 8;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  t |= *src++;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  t <<= 8;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  t |= *src++;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">/* Write two 16 bit values. */</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  *dest16 = (t & (0xfff << 12)) >> 12;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  dest16++;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  *dest16 = t & 0xfff;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  dest16++;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  src += pad;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  out = ret;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> err;</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> } }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">/*</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> Local Variables:</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> mode:c++</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> c-file-style:"stroustrup"</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> c-file-offsets:((innamespace . 0))</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> tab-width:2</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> c-basic-offset:2</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> indent-tabs-mode:nil</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> fill-column:80</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> End:</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment">*/</span></div><div class="ttc" id="namespaceOpenRaw_html"><div class="ttname"><a href="namespaceOpenRaw.html">OpenRaw</a></div><div class="ttdoc">CIFF is the container for CRW files. It is an attempt from Canon to make this a standard. I guess it failed. </div><div class="ttdef"><b>Definition:</b> <a href="arwfile_8cpp_source.html#l00030">arwfile.cpp:30</a></div></div>
<div class="ttc" id="namespaceDebug_html"><div class="ttname"><a href="namespaceDebug.html">Debug</a></div><div class="ttdef"><b>Definition:</b> <a href="trace_8cpp_source.html#l00030">trace.cpp:30</a></div></div>
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