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<a href="array_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* PipeWire</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright © 2018 Wim Taymans</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * copy of this software and associated documentation files (the &quot;Software&quot;),</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * to deal in the Software without restriction, including without limitation</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * The above copyright notice and this permission notice (including the next</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * paragraph) shall be included in all copies or substantial portions of the</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#ifndef PIPEWIRE_ARRAY_H</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#define PIPEWIRE_ARRAY_H</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &lt;errno.h&gt;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#include &lt;spa/utils/defs.h&gt;</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="structpw__array.html">   43</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structpw__array.html">pw_array</a> {</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">   44</a></span>&#160;        <span class="keywordtype">void</span> *<a class="code" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">data</a>;             </div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">   45</a></span>&#160;        <span class="keywordtype">size_t</span> <a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a>;            </div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">   46</a></span>&#160;        <span class="keywordtype">size_t</span> <a class="code" href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">alloc</a>;           </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structpw__array.html#a92ae2df32c3d6935897f41b6e7f5ad3c">   47</a></span>&#160;        <span class="keywordtype">size_t</span> <a class="code" href="structpw__array.html#a92ae2df32c3d6935897f41b6e7f5ad3c">extend</a>;          </div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;};</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="array_8h.html#a20b2d5c76f5bd422da680284e2709164">   50</a></span>&#160;<span class="preprocessor">#define PW_ARRAY_INIT(extend) (struct pw_array) { NULL, 0, 0, extend }</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="array_8h.html#aedd836346a7503ad9b55f6db1135c7eb">   52</a></span>&#160;<span class="preprocessor">#define pw_array_get_len_s(a,s)                 ((a)-&gt;size / (s))</span></div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="array_8h.html#a9bf5018e1a0d7466dc4fcac3e3207939">   53</a></span>&#160;<span class="preprocessor">#define pw_array_get_unchecked_s(a,idx,s,t)     SPA_MEMBER((a)-&gt;data,(idx)*(s),t)</span></div><div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="array_8h.html#a47a9004f4bdadccc2f702b83c16e468d">   54</a></span>&#160;<span class="preprocessor">#define pw_array_check_index_s(a,idx,s)         ((idx) &lt; pw_array_get_len_s(a,s))</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structpw__array.html#adc116ecc65a6fb6f1d207e64c167c6b3">   57</a></span>&#160;<span class="preprocessor">#define pw_array_get_len(a,t)                   pw_array_get_len_s(a,sizeof(t))</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="structpw__array.html#ab0a7f1be44fce5380425b1ffcc674cf2">   59</a></span>&#160;<span class="preprocessor">#define pw_array_get_unchecked(a,idx,t)         pw_array_get_unchecked_s(a,idx,sizeof(t),t)</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="structpw__array.html#a0cfa9d60080b10e5256fb90979199132">   61</a></span>&#160;<span class="preprocessor">#define pw_array_check_index(a,idx,t)           pw_array_check_index_s(a,idx,sizeof(t))</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="array_8h.html#a85440beb42b600e73e18daa0f3733f18">   63</a></span>&#160;<span class="preprocessor">#define pw_array_first(a)       ((a)-&gt;data)</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="array_8h.html#ae9cb8580392ca2b9f97868eb9931968a">   64</a></span>&#160;<span class="preprocessor">#define pw_array_end(a)         SPA_MEMBER((a)-&gt;data, (a)-&gt;size, void)</span></div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="array_8h.html#a2625032cf701f2e966cbebec6b960596">   65</a></span>&#160;<span class="preprocessor">#define pw_array_check(a,p)     (SPA_MEMBER(p,sizeof(*p),void) &lt;= pw_array_end(a))</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="array_8h.html#aa960ca693013e1b7fce13b0968db70b8">   67</a></span>&#160;<span class="preprocessor">#define pw_array_for_each(pos, array)                                   \</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor">        for (pos = (__typeof__(pos)) pw_array_first(array); 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       <span class="keywordtype">size_t</span> alloc, need;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        alloc = arr-&gt;<a class="code" href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">alloc</a>;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        need = arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a> + size;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        <span class="keywordflow">if</span> (SPA_UNLIKELY(alloc &lt; need)) {</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;                <span class="keywordtype">void</span> *<a class="code" href="structdata.html">data</a>;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                alloc = SPA_MAX(alloc, arr-&gt;<a class="code" href="structpw__array.html#a92ae2df32c3d6935897f41b6e7f5ad3c">extend</a>);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                <span class="keywordflow">while</span> (alloc &lt; need)</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;                        alloc *= 2;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;                <span class="keywordflow">if</span> (SPA_UNLIKELY((<a class="code" href="structdata.html">data</a> = realloc(arr-&gt;<a class="code" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">data</a>, alloc)) == NULL))</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                        <span class="keywordflow">return</span> -errno;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                arr-&gt;<a class="code" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">data</a> = <a class="code" href="structdata.html">data</a>;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                arr-&gt;<a class="code" href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">alloc</a> = alloc;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        }</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;}</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="structpw__array.html#adf6a4fd9f9bd810eb374737b3d1169b2">  121</a></span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> *<a class="code" href="structpw__array.html#adf6a4fd9f9bd810eb374737b3d1169b2">pw_array_add</a>(<span class="keyword">struct</span> <a class="code" href="structpw__array.html">pw_array</a> *arr, <span class="keywordtype">size_t</span> size)</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;{</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keywordtype">void</span> *p;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structpw__array.html#a3045d41af637079f6cba71102050f119">pw_array_ensure_size</a>(arr, size) &lt; 0)</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        p = SPA_MEMBER(arr-&gt;<a class="code" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">data</a>, arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a>, <span class="keywordtype">void</span>);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a> += size;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <span class="keywordflow">return</span> p;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="structpw__array.html#ae8d9a82b23a44ceb033f7f6ce3b0621d">  136</a></span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> *<a class="code" href="structpw__array.html#ae8d9a82b23a44ceb033f7f6ce3b0621d">pw_array_add_fixed</a>(<span class="keyword">struct</span> <a class="code" href="structpw__array.html">pw_array</a> *arr, <span class="keywordtype">size_t</span> size)</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;{</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        <span class="keywordtype">void</span> *p;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keywordflow">if</span> (SPA_UNLIKELY(arr-&gt;<a class="code" href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">alloc</a> &lt; arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a> + size)) {</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                errno = ENOSPC;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;                <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        }</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        p = SPA_MEMBER(arr-&gt;<a class="code" href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">data</a>, arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a>, <span class="keywordtype">void</span>);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        arr-&gt;<a class="code" href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">size</a> += size;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        <span class="keywordflow">return</span> p;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;}</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="structpw__array.html#a8d035221a3657cf9d2ede737a62a7c77">  152</a></span>&#160;<span class="preprocessor">#define pw_array_add_ptr(a,p)                                   \</span></div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="preprocessor">        *((void**) pw_array_add(a, sizeof(void*))) = (p)</span></div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;}  <span class="comment">/* extern &quot;C&quot; */</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* PIPEWIRE_ARRAY_H */</span><span class="preprocessor"></span></div><div class="ttc" id="structpw__array_html_a3045d41af637079f6cba71102050f119"><div class="ttname"><a href="structpw__array.html#a3045d41af637079f6cba71102050f119">pw_array::pw_array_ensure_size</a></div><div class="ttdeci">static int pw_array_ensure_size(struct pw_array *arr, size_t size)</div><div class="ttdoc">Make sure size bytes can be added to the array.</div><div class="ttdef"><b>Definition:</b> array.h:99</div></div>
<div class="ttc" id="structpw__array_html_adf6a4fd9f9bd810eb374737b3d1169b2"><div class="ttname"><a href="structpw__array.html#adf6a4fd9f9bd810eb374737b3d1169b2">pw_array::pw_array_add</a></div><div class="ttdeci">static void * pw_array_add(struct pw_array *arr, size_t size)</div><div class="ttdoc">Add ref size bytes to arr.</div><div class="ttdef"><b>Definition:</b> array.h:121</div></div>
<div class="ttc" id="structpw__array_html_ab0929cdf2f7acb291f2f17be299b8ea5"><div class="ttname"><a href="structpw__array.html#ab0929cdf2f7acb291f2f17be299b8ea5">pw_array::data</a></div><div class="ttdeci">void * data</div><div class="ttdoc">pointer to array data</div><div class="ttdef"><b>Definition:</b> array.h:44</div></div>
<div class="ttc" id="structpw__array_html_a41905dd179bcee03cceef47579e0a22e"><div class="ttname"><a href="structpw__array.html#a41905dd179bcee03cceef47579e0a22e">pw_array::pw_array_init</a></div><div class="ttdeci">static void pw_array_init(struct pw_array *arr, size_t extend)</div><div class="ttdoc">Initialize the array with given extend.</div><div class="ttdef"><b>Definition:</b> array.h:79</div></div>
<div class="ttc" id="structpw__array_html"><div class="ttname"><a href="structpw__array.html">pw_array</a></div><div class="ttdoc">An array object.</div><div class="ttdef"><b>Definition:</b> array.h:43</div></div>
<div class="ttc" id="structpw__array_html_a429b934f5c1580d91af238ac04e44842"><div class="ttname"><a href="structpw__array.html#a429b934f5c1580d91af238ac04e44842">pw_array::alloc</a></div><div class="ttdeci">size_t alloc</div><div class="ttdoc">number of allocated memory in data</div><div class="ttdef"><b>Definition:</b> array.h:46</div></div>
<div class="ttc" id="structpw__array_html_a92ae2df32c3d6935897f41b6e7f5ad3c"><div class="ttname"><a href="structpw__array.html#a92ae2df32c3d6935897f41b6e7f5ad3c">pw_array::extend</a></div><div class="ttdeci">size_t extend</div><div class="ttdoc">number of bytes to extend with</div><div class="ttdef"><b>Definition:</b> array.h:47</div></div>
<div class="ttc" id="structpw__array_html_a3d468425a1a0084f98301e2fd9becc6b"><div class="ttname"><a href="structpw__array.html#a3d468425a1a0084f98301e2fd9becc6b">pw_array::size</a></div><div class="ttdeci">size_t size</div><div class="ttdoc">length of array in bytes</div><div class="ttdef"><b>Definition:</b> array.h:45</div></div>
<div class="ttc" id="structpw__array_html_ae8d9a82b23a44ceb033f7f6ce3b0621d"><div class="ttname"><a href="structpw__array.html#ae8d9a82b23a44ceb033f7f6ce3b0621d">pw_array::pw_array_add_fixed</a></div><div class="ttdeci">static void * pw_array_add_fixed(struct pw_array *arr, size_t size)</div><div class="ttdoc">Add ref size bytes to arr.</div><div class="ttdef"><b>Definition:</b> array.h:136</div></div>
<div class="ttc" id="structdata_html"><div class="ttname"><a href="structdata.html">data</a></div><div class="ttdef"><b>Definition:</b> stream.c:69</div></div>
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