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<div class="title">libavutil/buffer.h File Reference<div class="ingroups"><a class="el" href="group__lavu__buffer.html">AVBuffer</a></div></div> </div>
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<p>refcounted data buffer API
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <stdint.h></code><br/>
</div>
<p><a href="buffer_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVBufferRef.html">AVBufferRef</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A reference to a data buffer. <a href="structAVBufferRef.html#details">More...</a><br/></td></tr>
<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__buffer.html#gaa818f8f1011d69acc50c1f29cb85e576">AV_BUFFER_FLAG_READONLY</a>   (1 << 0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Always treat the buffer as read-only, even when it has only one reference. <a href="group__lavu__buffer.html#gaa818f8f1011d69acc50c1f29cb85e576"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__lavu__buffer.html#ga501d49df442180d584f255aa97b2549d">AVBuffer</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga501d49df442180d584f255aa97b2549d">AVBuffer</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A reference counted buffer type. <a href="group__lavu__buffer.html#ga501d49df442180d584f255aa97b2549d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6">AVBufferPool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6">AVBufferPool</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The buffer pool. <a href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVBufferRef.html">AVBufferRef</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga5ae84ac902283dea1a660ede06c1cdac">av_buffer_alloc</a> (int size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate an AVBuffer of the given size using <a class="el" href="group__lavu__mem.html#ga9722446c5e310ffedfaac9489864796d" title="Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...">av_malloc()</a>. <a href="group__lavu__buffer.html#ga5ae84ac902283dea1a660ede06c1cdac"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVBufferRef.html">AVBufferRef</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga27f37cc004f768b00442b6cb08091686">av_buffer_allocz</a> (int size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Same as <a class="el" href="group__lavu__buffer.html#ga5ae84ac902283dea1a660ede06c1cdac" title="Allocate an AVBuffer of the given size using av_malloc().">av_buffer_alloc()</a>, except the returned buffer will be initialized to zero. <a href="group__lavu__buffer.html#ga27f37cc004f768b00442b6cb08091686"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVBufferRef.html">AVBufferRef</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga3e7f4c92db85ccba0b2a16dd0069842a">av_buffer_create</a> (uint8_t *data, int size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create an AVBuffer from an existing array. <a href="group__lavu__buffer.html#ga3e7f4c92db85ccba0b2a16dd0069842a"></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__buffer.html#ga37d620e8cfc9f2f3261c2b4c5d4adfe0">av_buffer_default_free</a> (void *opaque, uint8_t *data)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default free callback, which calls <a class="el" href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411" title="Free a memory block which has been allocated with av_malloc(z)() or av_realloc().">av_free()</a> on the buffer data. <a href="group__lavu__buffer.html#ga37d620e8cfc9f2f3261c2b4c5d4adfe0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVBufferRef.html">AVBufferRef</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#gaa40ce7d3ede946a89d03323bbd7268c1">av_buffer_ref</a> (<a class="el" href="structAVBufferRef.html">AVBufferRef</a> *buf)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create a new reference to an AVBuffer. <a href="group__lavu__buffer.html#gaa40ce7d3ede946a89d03323bbd7268c1"></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__buffer.html#ga135e9e929b5033bb8f68322497b2effc">av_buffer_unref</a> (<a class="el" href="structAVBufferRef.html">AVBufferRef</a> **buf)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Free a given reference and automatically free the buffer if there are no more references to it. <a href="group__lavu__buffer.html#ga135e9e929b5033bb8f68322497b2effc"></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__buffer.html#ga060be34ace567ae378fd0a786e847053">av_buffer_is_writable</a> (const <a class="el" href="structAVBufferRef.html">AVBufferRef</a> *buf)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#gac1c38f469fc9933885cfffafd8cbf0d6">av_buffer_get_opaque</a> (const <a class="el" href="structAVBufferRef.html">AVBufferRef</a> *buf)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga7b16c3976dc555f71d0843bbd023dfcd">av_buffer_get_ref_count</a> (const <a class="el" href="structAVBufferRef.html">AVBufferRef</a> *buf)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__buffer.html#ga9c2a1be1b7bb80eec8613fdb62a19074">av_buffer_make_writable</a> (<a class="el" href="structAVBufferRef.html">AVBufferRef</a> **buf)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create a writable reference from a given buffer reference, avoiding data copy if possible. <a href="group__lavu__buffer.html#ga9c2a1be1b7bb80eec8613fdb62a19074"></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__buffer.html#gac7c228f9ed54e246dcd270503bed7291">av_buffer_realloc</a> (<a class="el" href="structAVBufferRef.html">AVBufferRef</a> **buf, int size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Reallocate a given buffer. <a href="group__lavu__buffer.html#gac7c228f9ed54e246dcd270503bed7291"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6">AVBufferPool</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__bufferpool.html#ga26af9b07c08bc7fd2cfc62767e490b93">av_buffer_pool_init</a> (int size, <a class="el" href="structAVBufferRef.html">AVBufferRef</a> *(*alloc)(int size))</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate and initialize a buffer pool. <a href="group__lavu__bufferpool.html#ga26af9b07c08bc7fd2cfc62767e490b93"></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__bufferpool.html#ga7b76781c5944b3bb59b2e3b1a8994e4a">av_buffer_pool_uninit</a> (<a class="el" href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6">AVBufferPool</a> **pool)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Mark the pool as being available for freeing. <a href="group__lavu__bufferpool.html#ga7b76781c5944b3bb59b2e3b1a8994e4a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVBufferRef.html">AVBufferRef</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__bufferpool.html#ga2c745ecb4001452423e775b06b20fb7c">av_buffer_pool_get</a> (<a class="el" href="group__lavu__bufferpool.html#ga13bc8038952b61bae4d591f30c7421f6">AVBufferPool</a> *pool)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocate a new AVBuffer, reusing an old buffer from the pool when available. <a href="group__lavu__bufferpool.html#ga2c745ecb4001452423e775b06b20fb7c"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>refcounted data buffer API </p>
<p>Definition in file <a class="el" href="buffer_8h_source.html">buffer.h</a>.</p>
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