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<p>memory handling functions
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <limits.h></code><br/>
<code>#include <stdint.h></code><br/>
<code>#include "<a class="el" href="attributes_8h_source.html">attributes.h</a>"</code><br/>
<code>#include "<a class="el" href="error_8h_source.html">error.h</a>"</code><br/>
<code>#include "<a class="el" href="avutil_8h_source.html">avutil.h</a>"</code><br/>
</div>
<p><a href="mem_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="define-members"></a>
Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga7a422611f83afb33d6e0da44184b548e">DECLARE_ALIGNED</a>(n, t, v)   t __attribute__ ((aligned (n))) v</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga6e5cdd0ac639d7dea5033df3b64cfe3c">DECLARE_ASM_CONST</a>(n, t, v)   static const t <a class="el" href="attributes_8h.html#aa402443f9068fb645e9a55f41fc99e09">av_used</a> __attribute__ ((aligned (n))) v</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a>   __attribute__((__malloc__))</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gad7ff928d462d1a61b37baa70bf13e0e3">av_alloc_size</a>(...)   __attribute__((alloc_size(__VA_ARGS__)))</td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga9722446c5e310ffedfaac9489864796d">av_malloc</a> (size_t size) <a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a> 1(1)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU). <a href="group__lavu__mem.html#ga9722446c5e310ffedfaac9489864796d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gab62b093b46dce5fe4e3e1d58bdb255da">av_malloc_array</a> (size_t nmemb, size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga675a8e3b2f7353329b79a3c55010d612">av_realloc</a> (void *ptr, size_t size) 1(2)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate or reallocate a block of memory. <a href="group__lavu__mem.html#ga675a8e3b2f7353329b79a3c55010d612"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gae5ca394e7536fcd2689008b011a211ad">av_realloc_f</a> (void *ptr, size_t nelem, size_t elsize)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate or reallocate a block of memory. <a href="group__lavu__mem.html#gae5ca394e7536fcd2689008b011a211ad"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga162ac7cb3ff79ae050ccc25e57adfc46">av_reallocp</a> (void *ptr, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate or reallocate a block of memory. <a href="group__lavu__mem.html#ga162ac7cb3ff79ae050ccc25e57adfc46"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gaadc230ece36ef112710b262a6601a16b">av_realloc_array</a> (void *ptr, size_t nmemb, size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gad8fde0c159ac905909339e082a049cde">av_reallocp_array</a> (void *ptr, size_t nmemb, size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411">av_free</a> (void *ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Free a memory block which has been allocated with av_malloc(z)() or <a class="el" href="group__lavu__mem.html#ga675a8e3b2f7353329b79a3c55010d612" title="Allocate or reallocate a block of memory.">av_realloc()</a>. <a href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga0a8cc057ae9723ce3b9203cb5365971a">av_mallocz</a> (size_t size) <a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a> 1(1)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block. <a href="group__lavu__mem.html#ga0a8cc057ae9723ce3b9203cb5365971a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gaaf38f6d994f5a85854ef47fd98fa6e9a">av_calloc</a> (size_t nmemb, size_t size) <a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block. <a href="group__lavu__mem.html#gaaf38f6d994f5a85854ef47fd98fa6e9a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gae0443f550815c80af42c5ae967351433">av_mallocz_array</a> (size_t nmemb, size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga7c352f4cff02184f005323691375fea9">av_strdup</a> (const char *s) <a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Duplicate the string s. <a href="group__lavu__mem.html#ga7c352f4cff02184f005323691375fea9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#gaffde7a717e3a603ed11a998c18d68cad">av_strndup</a> (const char *s, size_t len) <a class="el" href="group__lavu__mem.html#gad48ff724186ef4e602ae7a2547e4287c">av_malloc_attrib</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Duplicate a substring of the string s. <a href="group__lavu__mem.html#gaffde7a717e3a603ed11a998c18d68cad"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga4ad5e6363f4a6b6eddfdb427e21166f2">av_memdup</a> (const void *p, size_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Duplicate the buffer p. <a href="group__lavu__mem.html#ga4ad5e6363f4a6b6eddfdb427e21166f2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga0cc84043ea2167ad005c86e11d0bcdba">av_freep</a> (void *ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Free a memory block which has been allocated with av_malloc(z)() or <a class="el" href="group__lavu__mem.html#ga675a8e3b2f7353329b79a3c55010d612" title="Allocate or reallocate a block of memory.">av_realloc()</a> and set the pointer pointing to it to NULL. <a href="group__lavu__mem.html#ga0cc84043ea2167ad005c86e11d0bcdba"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga385b582522cedf5a88ce2cf158c396c9">av_dynarray_add</a> (void *tab_ptr, int *nb_ptr, void *elem)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add an element to a dynamic array. <a href="group__lavu__mem.html#ga385b582522cedf5a88ce2cf158c396c9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga8f67d2e3fe423b4ed333219e7f591ace">av_dynarray_add_nofree</a> (void *tab_ptr, int *nb_ptr, void *elem)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add an element to a dynamic array. <a href="group__lavu__mem.html#ga8f67d2e3fe423b4ed333219e7f591ace"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga9f60ff848186092d6705276a52ea0bb9">av_dynarray2_add</a> (void **tab_ptr, int *nb_ptr, size_t elem_size, const uint8_t *elem_data)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add an element of size elem_size to a dynamic array. <a href="group__lavu__mem.html#ga9f60ff848186092d6705276a52ea0bb9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga368c719d3bdce4de169910a4158df66b">av_size_mult</a> (size_t a, size_t b, size_t *r)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Multiply two size_t values checking for overflow. <a href="group__lavu__mem.html#ga368c719d3bdce4de169910a4158df66b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga2204fc859b4a3ca2d5bfd1bf4e8c4dfb">av_max_alloc</a> (size_t max)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the maximum size that may me allocated in one block. <a href="group__lavu__mem.html#ga2204fc859b4a3ca2d5bfd1bf4e8c4dfb"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga3ea4736dcceab4ba033b8abd2c2a180e">av_memcpy_backptr</a> (uint8_t *dst, int back, int cnt)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">deliberately overlapping memcpy implementation <a href="group__lavu__mem.html#ga3ea4736dcceab4ba033b8abd2c2a180e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga869fd8884d8d29a7a4910d879926d94a">av_fast_realloc</a> (void *ptr, unsigned int *size, size_t min_size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Reallocate the given block if it is not large enough, otherwise do nothing. <a href="group__lavu__mem.html#ga869fd8884d8d29a7a4910d879926d94a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__mem.html#ga29d0252b981f157e713a68ffca52f003">av_fast_malloc</a> (void *ptr, unsigned int *size, size_t min_size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate a buffer, reusing the given one if large enough. <a href="group__lavu__mem.html#ga29d0252b981f157e713a68ffca52f003"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>memory handling functions </p>
<p>Definition in file <a class="el" href="mem_8h_source.html">mem.h</a>.</p>
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