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/***************************************************************************/ |
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/* */ |
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/* ftsystem.h */ |
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/* */ |
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/* FreeType low-level system interface definition (specification). */ |
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/* */ |
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/* Copyright 1996-2001, 2002, 2005, 2010 by */ |
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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/* */ |
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/* This file is part of the FreeType project, and may only be used, */ |
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/* modified, and distributed under the terms of the FreeType project */ |
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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/* this file you indicate that you have read the license and */ |
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/* understand and accept it fully. */ |
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/* */ |
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/***************************************************************************/ |
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#ifndef __FTSYSTEM_H__ |
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#define __FTSYSTEM_H__ |
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#include |
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FT_BEGIN_HEADER |
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/*************************************************************************/ |
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/* */ |
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/* |
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/* system_interface */ |
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/* */ |
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/* */</pre></td>
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<td></td>
<td></td>
<td><a name="l35">35</a></td>
<td class="code"><pre> /* System Interface */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l36">36</a></td>
<td class="code"><pre> /* */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l37">37</a></td>
<td class="code"><pre> /* <Abstract> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l38">38</a></td>
<td class="code"><pre> /* How FreeType manages memory and i/o. */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l39">39</a></td>
<td class="code"><pre> /* */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l40">40</a></td>
<td class="code"><pre> /* <Description> */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l41">41</a></td>
<td class="code"><pre> /* This section contains various definitions related to memory */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l42">42</a></td>
<td class="code"><pre> /* management and i/o access. You need to understand this */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l43">43</a></td>
<td class="code"><pre> /* information if you want to use a custom memory manager or you own */</pre></td>
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<td></td>
<td></td>
<td><a name="l44">44</a></td>
<td class="code"><pre> /* i/o streams. */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l45">45</a></td>
<td class="code"><pre> /* */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l46">46</a></td>
<td class="code"><pre> /*************************************************************************/</pre></td>
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<td></td>
<td></td>
<td><a name="l47">47</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l48">48</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l49">49</a></td>
<td class="code"><pre> /*************************************************************************/</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l50">50</a></td>
<td class="code"><pre> /* */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l51">51</a></td>
<td class="code"><pre> /* M E M O R Y M A N A G E M E N T */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l52">52</a></td>
<td class="code"><pre> /* */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l53">53</a></td>
<td class="code"><pre> /*************************************************************************/</pre></td>
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<td></td>
<td></td>
<td><a name="l54">54</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l55">55</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l56">56</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
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<td></td>
<td></td>
<td><a name="l57">57</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l58">58</a></td>
<td class="code"><pre> * @type:</pre></td>
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<td></td>
<td></td>
<td><a name="l59">59</a></td>
<td class="code"><pre> * FT_Memory</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l60">60</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l61">61</a></td>
<td class="code"><pre> * @description:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l62">62</a></td>
<td class="code"><pre> * A handle to a given memory manager object, defined with an</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l63">63</a></td>
<td class="code"><pre> * @FT_MemoryRec structure.</pre></td>
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<td></td>
<td></td>
<td><a name="l64">64</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l65">65</a></td>
<td class="code"><pre> */</pre></td>
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<td></td>
<td></td>
<td><a name="l66">66</a></td>
<td class="code"><pre> typedef struct FT_MemoryRec_* FT_Memory;</pre></td>
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<td></td>
<td></td>
<td><a name="l67">67</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l68">68</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l69">69</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
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<td></td>
<td></td>
<td><a name="l70">70</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l71">71</a></td>
<td class="code"><pre> * @functype:</pre></td>
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<td></td>
<td></td>
<td><a name="l72">72</a></td>
<td class="code"><pre> * FT_Alloc_Func</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l73">73</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l74">74</a></td>
<td class="code"><pre> * @description:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l75">75</a></td>
<td class="code"><pre> * A function used to allocate `size' bytes from `memory'.</pre></td>
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<td></td>
<td></td>
<td><a name="l76">76</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l77">77</a></td>
<td class="code"><pre> * @input:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l78">78</a></td>
<td class="code"><pre> * memory ::</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l79">79</a></td>
<td class="code"><pre> * A handle to the source memory manager.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l80">80</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l81">81</a></td>
<td class="code"><pre> * size ::</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l82">82</a></td>
<td class="code"><pre> * The size in bytes to allocate.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l83">83</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l84">84</a></td>
<td class="code"><pre> * @return:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l85">85</a></td>
<td class="code"><pre> * Address of new memory block. 0~in case of failure.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l86">86</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l87">87</a></td>
<td class="code"><pre> */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l88">88</a></td>
<td class="code"><pre> typedef void*</pre></td>
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<td></td>
<td></td>
<td><a name="l89">89</a></td>
<td class="code"><pre> (*FT_Alloc_Func)( FT_Memory memory,</pre></td>
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<td></td>
<td></td>
<td><a name="l90">90</a></td>
<td class="code"><pre> long size );</pre></td>
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<td></td>
<td></td>
<td><a name="l91">91</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l92">92</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l93">93</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l94">94</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l95">95</a></td>
<td class="code"><pre> * @functype:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l96">96</a></td>
<td class="code"><pre> * FT_Free_Func</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l97">97</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l98">98</a></td>
<td class="code"><pre> * @description:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l99">99</a></td>
<td class="code"><pre> * A function used to release a given block of memory.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l100">100</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l101">101</a></td>
<td class="code"><pre> * @input:</pre></td>
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<td></td>
<td></td>
<td><a name="l102">102</a></td>
<td class="code"><pre> * memory ::</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l103">103</a></td>
<td class="code"><pre> * A handle to the source memory manager.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l104">104</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l105">105</a></td>
<td class="code"><pre> * block ::</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l106">106</a></td>
<td class="code"><pre> * The address of the target memory block.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l107">107</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l108">108</a></td>
<td class="code"><pre> */</pre></td>
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<td></td>
<td></td>
<td><a name="l109">109</a></td>
<td class="code"><pre> typedef void</pre></td>
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<td></td>
<td></td>
<td><a name="l110">110</a></td>
<td class="code"><pre> (*FT_Free_Func)( FT_Memory memory,</pre></td>
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<td></td>
<td></td>
<td><a name="l111">111</a></td>
<td class="code"><pre> void* block );</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l112">112</a></td>
<td class="code"><pre> </pre></td>
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<td></td>
<td></td>
<td><a name="l113">113</a></td>
<td class="code"><pre> </pre></td>
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<td></td>
<td></td>
<td><a name="l114">114</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
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<td></td>
<td></td>
<td><a name="l115">115</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l116">116</a></td>
<td class="code"><pre> * @functype:</pre></td>
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<td></td>
<td></td>
<td><a name="l117">117</a></td>
<td class="code"><pre> * FT_Realloc_Func</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l118">118</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l119">119</a></td>
<td class="code"><pre> * @description:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l120">120</a></td>
<td class="code"><pre> * A function used to re-allocate a given block of memory.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l121">121</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l122">122</a></td>
<td class="code"><pre> * @input:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l123">123</a></td>
<td class="code"><pre> * memory ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l124">124</a></td>
<td class="code"><pre> * A handle to the source memory manager.</pre></td>
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<td></td>
<td></td>
<td><a name="l125">125</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l126">126</a></td>
<td class="code"><pre> * cur_size ::</pre></td>
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<td></td>
<td></td>
<td><a name="l127">127</a></td>
<td class="code"><pre> * The block's current size in bytes.</pre></td>
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<td></td>
<td></td>
<td><a name="l128">128</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l129">129</a></td>
<td class="code"><pre> * new_size ::</pre></td>
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<td></td>
<td></td>
<td><a name="l130">130</a></td>
<td class="code"><pre> * The block's requested new size.</pre></td>
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<td></td>
<td></td>
<td><a name="l131">131</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l132">132</a></td>
<td class="code"><pre> * block ::</pre></td>
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<td></td>
<td></td>
<td><a name="l133">133</a></td>
<td class="code"><pre> * The block's current address.</pre></td>
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<td></td>
<td></td>
<td><a name="l134">134</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l135">135</a></td>
<td class="code"><pre> * @return:</pre></td>
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<td></td>
<td></td>
<td><a name="l136">136</a></td>
<td class="code"><pre> * New block address. 0~in case of memory shortage.</pre></td>
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<td></td>
<td></td>
<td><a name="l137">137</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l138">138</a></td>
<td class="code"><pre> * @note:</pre></td>
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<td></td>
<td></td>
<td><a name="l139">139</a></td>
<td class="code"><pre> * In case of error, the old block must still be available.</pre></td>
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<td></td>
<td></td>
<td><a name="l140">140</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l141">141</a></td>
<td class="code"><pre> */</pre></td>
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<td></td>
<td></td>
<td><a name="l142">142</a></td>
<td class="code"><pre> typedef void*</pre></td>
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<td></td>
<td></td>
<td><a name="l143">143</a></td>
<td class="code"><pre> (*FT_Realloc_Func)( FT_Memory memory,</pre></td>
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<td></td>
<td></td>
<td><a name="l144">144</a></td>
<td class="code"><pre> long cur_size,</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l145">145</a></td>
<td class="code"><pre> long new_size,</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l146">146</a></td>
<td class="code"><pre> void* block );</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l147">147</a></td>
<td class="code"><pre> </pre></td>
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<td></td>
<td></td>
<td><a name="l148">148</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l149">149</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l150">150</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l151">151</a></td>
<td class="code"><pre> * @struct:</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l152">152</a></td>
<td class="code"><pre> * FT_MemoryRec</pre></td>
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<td></td>
<td></td>
<td><a name="l153">153</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l154">154</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l155">155</a></td>
<td class="code"><pre> * A structure used to describe a given memory manager to FreeType~2.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l156">156</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l157">157</a></td>
<td class="code"><pre> * @fields:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l158">158</a></td>
<td class="code"><pre> * user ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l159">159</a></td>
<td class="code"><pre> * A generic typeless pointer for user data.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l160">160</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l161">161</a></td>
<td class="code"><pre> * alloc ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l162">162</a></td>
<td class="code"><pre> * A pointer type to an allocation function.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l163">163</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l164">164</a></td>
<td class="code"><pre> * free ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l165">165</a></td>
<td class="code"><pre> * A pointer type to an memory freeing function.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l166">166</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l167">167</a></td>
<td class="code"><pre> * realloc ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l168">168</a></td>
<td class="code"><pre> * A pointer type to a reallocation function.</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l169">169</a></td>
<td class="code"><pre> *</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l170">170</a></td>
<td class="code"><pre> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l171">171</a></td>
<td class="code"><pre> struct FT_MemoryRec_</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l172">172</a></td>
<td class="code"><pre> {</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l173">173</a></td>
<td class="code"><pre> void* user;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l174">174</a></td>
<td class="code"><pre> FT_Alloc_Func alloc;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l175">175</a></td>
<td class="code"><pre> FT_Free_Func free;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l176">176</a></td>
<td class="code"><pre> FT_Realloc_Func realloc;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l177">177</a></td>
<td class="code"><pre> };</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l178">178</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l179">179</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l180">180</a></td>
<td class="code"><pre> /*************************************************************************/</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l181">181</a></td>
<td class="code"><pre> /* */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l182">182</a></td>
<td class="code"><pre> /* I / O M A N A G E M E N T */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l183">183</a></td>
<td class="code"><pre> /* */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l184">184</a></td>
<td class="code"><pre> /*************************************************************************/</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l185">185</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l186">186</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l187">187</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l188">188</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l189">189</a></td>
<td class="code"><pre> * @type:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l190">190</a></td>
<td class="code"><pre> * FT_Stream</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l191">191</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l192">192</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l193">193</a></td>
<td class="code"><pre> * A handle to an input stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l194">194</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l195">195</a></td>
<td class="code"><pre> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l196">196</a></td>
<td class="code"><pre> typedef struct FT_StreamRec_* FT_Stream;</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l197">197</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l198">198</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l199">199</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l200">200</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l201">201</a></td>
<td class="code"><pre> * @struct:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l202">202</a></td>
<td class="code"><pre> * FT_StreamDesc</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l203">203</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l204">204</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l205">205</a></td>
<td class="code"><pre> * A union type used to store either a long or a pointer. This is used</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l206">206</a></td>
<td class="code"><pre> * to store a file descriptor or a `FILE*' in an input stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l207">207</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l208">208</a></td>
<td class="code"><pre> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l209">209</a></td>
<td class="code"><pre> typedef union FT_StreamDesc_</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l210">210</a></td>
<td class="code"><pre> {</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l211">211</a></td>
<td class="code"><pre> long value;</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l212">212</a></td>
<td class="code"><pre> void* pointer;</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l213">213</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l214">214</a></td>
<td class="code"><pre> } FT_StreamDesc;</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l215">215</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l216">216</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l217">217</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l218">218</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l219">219</a></td>
<td class="code"><pre> * @functype:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l220">220</a></td>
<td class="code"><pre> * FT_Stream_IoFunc</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l221">221</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l222">222</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l223">223</a></td>
<td class="code"><pre> * A function used to seek and read data from a given input stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l224">224</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l225">225</a></td>
<td class="code"><pre> * @input:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l226">226</a></td>
<td class="code"><pre> * stream ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l227">227</a></td>
<td class="code"><pre> * A handle to the source stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l228">228</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l229">229</a></td>
<td class="code"><pre> * offset ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l230">230</a></td>
<td class="code"><pre> * The offset of read in stream (always from start).</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l231">231</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l232">232</a></td>
<td class="code"><pre> * buffer ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l233">233</a></td>
<td class="code"><pre> * The address of the read buffer.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l234">234</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l235">235</a></td>
<td class="code"><pre> * count ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l236">236</a></td>
<td class="code"><pre> * The number of bytes to read from the stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l237">237</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l238">238</a></td>
<td class="code"><pre> * @return:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l239">239</a></td>
<td class="code"><pre> * The number of bytes effectively read by the stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l240">240</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l241">241</a></td>
<td class="code"><pre> * @note:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l242">242</a></td>
<td class="code"><pre> * This function might be called to perform a seek or skip operation</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l243">243</a></td>
<td class="code"><pre> * with a `count' of~0. A non-zero return value then indicates an</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l244">244</a></td>
<td class="code"><pre> * error.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l245">245</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l246">246</a></td>
<td class="code"><pre> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l247">247</a></td>
<td class="code"><pre> typedef unsigned long</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l248">248</a></td>
<td class="code"><pre> (*FT_Stream_IoFunc)( FT_Stream stream,</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l249">249</a></td>
<td class="code"><pre> unsigned long offset,</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l250">250</a></td>
<td class="code"><pre> unsigned char* buffer,</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l251">251</a></td>
<td class="code"><pre> unsigned long count );</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l252">252</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l253">253</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l254">254</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l255">255</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l256">256</a></td>
<td class="code"><pre> * @functype:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l257">257</a></td>
<td class="code"><pre> * FT_Stream_CloseFunc</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l258">258</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l259">259</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l260">260</a></td>
<td class="code"><pre> * A function used to close a given input stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l261">261</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l262">262</a></td>
<td class="code"><pre> * @input:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l263">263</a></td>
<td class="code"><pre> * stream ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l264">264</a></td>
<td class="code"><pre> * A handle to the target stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l265">265</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l266">266</a></td>
<td class="code"><pre> */</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l267">267</a></td>
<td class="code"><pre> typedef void</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l268">268</a></td>
<td class="code"><pre> (*FT_Stream_CloseFunc)( FT_Stream stream );</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l269">269</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l270">270</a></td>
<td class="code"><pre> </pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l271">271</a></td>
<td class="code"><pre> /*************************************************************************</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l272">272</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l273">273</a></td>
<td class="code"><pre> * @struct:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l274">274</a></td>
<td class="code"><pre> * FT_StreamRec</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l275">275</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l276">276</a></td>
<td class="code"><pre> * @description:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l277">277</a></td>
<td class="code"><pre> * A structure used to describe an input stream.</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l278">278</a></td>
<td class="code"><pre> *</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l279">279</a></td>
<td class="code"><pre> * @input:</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l280">280</a></td>
<td class="code"><pre> * base ::</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l281">281</a></td>
<td class="code"><pre> * For memory-based streams, this is the address of the first stream</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l282">282</a></td>
<td class="code"><pre> * byte in memory. This field should always be set to NULL for</pre></td>
</tr>
<tr valign="middle">
<td></td>
<td></td>
<td><a name="l283">283</a></td>
<td class="code"><pre> * disk-based streams.</pre></td>
</tr>
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<td></td>
<td><a name="l284">284</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l285">285</a></td>
<td class="code"><pre> * size ::</pre></td>
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<td></td>
<td><a name="l286">286</a></td>
<td class="code"><pre> * The stream size in bytes.</pre></td>
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<td></td>
<td><a name="l287">287</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l288">288</a></td>
<td class="code"><pre> * pos ::</pre></td>
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<td></td>
<td></td>
<td><a name="l289">289</a></td>
<td class="code"><pre> * The current position within the stream.</pre></td>
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<td></td>
<td><a name="l290">290</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l291">291</a></td>
<td class="code"><pre> * descriptor ::</pre></td>
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<td></td>
<td><a name="l292">292</a></td>
<td class="code"><pre> * This field is a union that can hold an integer or a pointer. It is</pre></td>
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<td></td>
<td></td>
<td><a name="l293">293</a></td>
<td class="code"><pre> * used by stream implementations to store file descriptors or `FILE*'</pre></td>
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<td></td>
<td><a name="l294">294</a></td>
<td class="code"><pre> * pointers.</pre></td>
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<td></td>
<td><a name="l295">295</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l296">296</a></td>
<td class="code"><pre> * pathname ::</pre></td>
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<td></td>
<td><a name="l297">297</a></td>
<td class="code"><pre> * This field is completely ignored by FreeType. However, it is often</pre></td>
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<td></td>
<td></td>
<td><a name="l298">298</a></td>
<td class="code"><pre> * useful during debugging to use it to store the stream's filename</pre></td>
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<td></td>
<td><a name="l299">299</a></td>
<td class="code"><pre> * (where available).</pre></td>
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<td></td>
<td></td>
<td><a name="l300">300</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l301">301</a></td>
<td class="code"><pre> * read ::</pre></td>
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<td></td>
<td><a name="l302">302</a></td>
<td class="code"><pre> * The stream's input function.</pre></td>
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<td></td>
<td></td>
<td><a name="l303">303</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l304">304</a></td>
<td class="code"><pre> * close ::</pre></td>
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<td></td>
<td><a name="l305">305</a></td>
<td class="code"><pre> * The stream's close function.</pre></td>
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<td></td>
<td><a name="l306">306</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l307">307</a></td>
<td class="code"><pre> * memory ::</pre></td>
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<td></td>
<td></td>
<td><a name="l308">308</a></td>
<td class="code"><pre> * The memory manager to use to preload frames. This is set</pre></td>
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<td></td>
<td></td>
<td><a name="l309">309</a></td>
<td class="code"><pre> * internally by FreeType and shouldn't be touched by stream</pre></td>
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<td></td>
<td><a name="l310">310</a></td>
<td class="code"><pre> * implementations.</pre></td>
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<td></td>
<td><a name="l311">311</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l312">312</a></td>
<td class="code"><pre> * cursor ::</pre></td>
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<td></td>
<td></td>
<td><a name="l313">313</a></td>
<td class="code"><pre> * This field is set and used internally by FreeType when parsing</pre></td>
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<td></td>
<td></td>
<td><a name="l314">314</a></td>
<td class="code"><pre> * frames.</pre></td>
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<td></td>
<td><a name="l315">315</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td><a name="l316">316</a></td>
<td class="code"><pre> * limit ::</pre></td>
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<td></td>
<td></td>
<td><a name="l317">317</a></td>
<td class="code"><pre> * This field is set and used internally by FreeType when parsing</pre></td>
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<td></td>
<td></td>
<td><a name="l318">318</a></td>
<td class="code"><pre> * frames.</pre></td>
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<td></td>
<td></td>
<td><a name="l319">319</a></td>
<td class="code"><pre> *</pre></td>
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<td></td>
<td></td>
<td><a name="l320">320</a></td>
<td class="code"><pre> */</pre></td>
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<td></td>
<td></td>
<td><a name="l321">321</a></td>
<td class="code"><pre> typedef struct FT_StreamRec_</pre></td>
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<td></td>
<td></td>
<td><a name="l322">322</a></td>
<td class="code"><pre> {</pre></td>
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<td></td>
<td></td>
<td><a name="l323">323</a></td>
<td class="code"><pre> unsigned char* base;</pre></td>
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<td></td>
<td></td>
<td><a name="l324">324</a></td>
<td class="code"><pre> unsigned long size;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l325">325</a></td>
<td class="code"><pre> unsigned long pos;</pre></td>
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<td></td>
<td></td>
<td><a name="l326">326</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l327">327</a></td>
<td class="code"><pre> FT_StreamDesc descriptor;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l328">328</a></td>
<td class="code"><pre> FT_StreamDesc pathname;</pre></td>
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<td></td>
<td></td>
<td><a name="l329">329</a></td>
<td class="code"><pre> FT_Stream_IoFunc read;</pre></td>
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<td></td>
<td></td>
<td><a name="l330">330</a></td>
<td class="code"><pre> FT_Stream_CloseFunc close;</pre></td>
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<td></td>
<td></td>
<td><a name="l331">331</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l332">332</a></td>
<td class="code"><pre> FT_Memory memory;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l333">333</a></td>
<td class="code"><pre> unsigned char* cursor;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l334">334</a></td>
<td class="code"><pre> unsigned char* limit;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l335">335</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l336">336</a></td>
<td class="code"><pre> } FT_StreamRec;</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l337">337</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l338">338</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l339">339</a></td>
<td class="code"><pre> /* */</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l340">340</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l341">341</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l342">342</a></td>
<td class="code"><pre>FT_END_HEADER</pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l343">343</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l344">344</a></td>
<td class="code"><pre>#endif /* __FTSYSTEM_H__ */</pre></td>
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<td></td>
<td></td>
<td><a name="l345">345</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l346">346</a></td>
<td class="code"><pre> </pre></td>
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<tr valign="middle">
<td></td>
<td></td>
<td><a name="l347">347</a></td>
<td class="code"><pre>/* END */</Description></Abstract> |