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<div id="projectname">EXIF library (libexif) API <span id="projectnumber">0.6.20</span></div>
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<h1>exif-log.h File Reference</h1> </div>
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<p>Log message infrastructure.
<a href="#_details">More...</a></p>
<div class="textblock"><code>#include <libexif/exif-mem.h></code><br/>
<code>#include <stdarg.h></code><br/>
</div>
<p><a href="exif-log_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"><a class="anchor" id="a4221b964f5ee550f6166126b263d3b2f"></a><!-- doxytag: member="exif-log.h::EXIF_LOG_NO_MEMORY" ref="a4221b964f5ee550f6166126b263d3b2f" args="(l, d, s)" -->
#define </td><td class="memItemRight" valign="bottom"><b>EXIF_LOG_NO_MEMORY</b>(l, d, s)   exif_log ((l), EXIF_LOG_CODE_NO_MEMORY, (d), "Could not allocate %lu byte(s).", (unsigned long)(s))</td></tr>
<tr><td colspan="2"><h2><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6b225115984bb2016282923cb487f16b"></a><!-- doxytag: member="exif-log.h::ExifLog" ref="a6b225115984bb2016282923cb487f16b" args="" -->
typedef struct _ExifLog </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">State maintained by the logging interface. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a5f19ac102b6d554320d6afb32f85c3d3"></a><!-- doxytag: member="exif-log.h::ExifLogFunc" ref="a5f19ac102b6d554320d6afb32f85c3d3" args=")(ExifLog *log, ExifLogCode, const char *domain, const char *format, va_list args, void *data)" -->
typedef void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#a5f19ac102b6d554320d6afb32f85c3d3">ExifLogFunc</a> )(<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log, ExifLogCode, const char *domain, const char *format, va_list args, void *data)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Log callback function prototype. <br/></td></tr>
<tr><td colspan="2"><h2><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><b>ExifLogCode</b> { <b>EXIF_LOG_CODE_NONE</b>,
<b>EXIF_LOG_CODE_DEBUG</b>,
<b>EXIF_LOG_CODE_NO_MEMORY</b>,
<b>EXIF_LOG_CODE_CORRUPT_DATA</b>
}</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="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#a92d3525981d3d604521ca74ce05d0add">exif_log_new</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create a new logging instance. <a href="#a92d3525981d3d604521ca74ce05d0add"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad6e1adde9d6188d369e3cc45b3aa7815"></a><!-- doxytag: member="exif-log.h::exif_log_new_mem" ref="ad6e1adde9d6188d369e3cc45b3aa7815" args="(ExifMem *)" -->
<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> * </td><td class="memItemRight" valign="bottom"><b>exif_log_new_mem</b> (<a class="el" href="exif-mem_8h.html#aab8aacbc0ed6f11a1f022b7b1bf4750e">ExifMem</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aafd7e5d40ca73440976a3b684bfa1059"></a><!-- doxytag: member="exif-log.h::exif_log_ref" ref="aafd7e5d40ca73440976a3b684bfa1059" args="(ExifLog *log)" -->
void </td><td class="memItemRight" valign="bottom"><b>exif_log_ref</b> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7a9b738a7429197d68c80ffedac7d8fb"></a><!-- doxytag: member="exif-log.h::exif_log_unref" ref="a7a9b738a7429197d68c80ffedac7d8fb" args="(ExifLog *log)" -->
void </td><td class="memItemRight" valign="bottom"><b>exif_log_unref</b> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#acd0808d6d5be73f28059797c2e2e67dc">exif_log_free</a> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Delete instance of <a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b" title="State maintained by the logging interface.">ExifLog</a>. <a href="#acd0808d6d5be73f28059797c2e2e67dc"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#a31cf3057f5546ae2881d817c70ebca55">exif_log_code_get_title</a> (ExifLogCode code)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a textual description of the given class of error log. <a href="#a31cf3057f5546ae2881d817c70ebca55"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#afe3839462dc826b72b9b13cdc6931473">exif_log_code_get_message</a> (ExifLogCode code)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a verbose description of the given class of error log. <a href="#afe3839462dc826b72b9b13cdc6931473"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="exif-log_8h.html#a493a369b7020265971cdaf8be9a2f6fe">exif_log_set_func</a> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log, <a class="el" href="exif-log_8h.html#a5f19ac102b6d554320d6afb32f85c3d3">ExifLogFunc</a> func, void *data)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Register log callback function. <a href="#a493a369b7020265971cdaf8be9a2f6fe"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3317c341014d6ed3ea726f66116d5de0"></a><!-- doxytag: member="exif-log.h::exif_log" ref="a3317c341014d6ed3ea726f66116d5de0" args="(ExifLog *log, ExifLogCode, const char *domain, const char *format,...)" -->
void </td><td class="memItemRight" valign="bottom"><b>exif_log</b> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log, ExifLogCode, const char *domain, const char *format,...)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af5f451d1ffd6538a88ca59798799af41"></a><!-- doxytag: member="exif-log.h::exif_logv" ref="af5f451d1ffd6538a88ca59798799af41" args="(ExifLog *log, ExifLogCode, const char *domain, const char *format, va_list args)" -->
void </td><td class="memItemRight" valign="bottom"><b>exif_logv</b> (<a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> *log, ExifLogCode, const char *domain, const char *format, va_list args)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Log message infrastructure. </p>
</div><hr/><h2>Function Documentation</h2>
<a class="anchor" id="afe3839462dc826b72b9b13cdc6931473"></a><!-- doxytag: member="exif-log.h::exif_log_code_get_message" ref="afe3839462dc826b72b9b13cdc6931473" args="(ExifLogCode code)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const char* exif_log_code_get_message </td>
<td>(</td>
<td class="paramtype">ExifLogCode </td>
<td class="paramname"><em>code</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return a verbose description of the given class of error log. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">code</td><td>logging message class </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>verbose description of the log class </dd></dl>
</div>
</div>
<a class="anchor" id="a31cf3057f5546ae2881d817c70ebca55"></a><!-- doxytag: member="exif-log.h::exif_log_code_get_title" ref="a31cf3057f5546ae2881d817c70ebca55" args="(ExifLogCode code)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const char* exif_log_code_get_title </td>
<td>(</td>
<td class="paramtype">ExifLogCode </td>
<td class="paramname"><em>code</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return a textual description of the given class of error log. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">code</td><td>logging message class </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>textual description of the log class </dd></dl>
</div>
</div>
<a class="anchor" id="acd0808d6d5be73f28059797c2e2e67dc"></a><!-- doxytag: member="exif-log.h::exif_log_free" ref="acd0808d6d5be73f28059797c2e2e67dc" args="(ExifLog *log)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">void exif_log_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> * </td>
<td class="paramname"><em>log</em></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Delete instance of <a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b" title="State maintained by the logging interface.">ExifLog</a>. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="exif-log_8h.html#a92d3525981d3d604521ca74ce05d0add" title="Create a new logging instance.">exif_log_new</a></dd></dl>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">log</td><td><a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b" title="State maintained by the logging interface.">ExifLog</a> </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>new instance of <a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b" title="State maintained by the logging interface.">ExifLog</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a92d3525981d3d604521ca74ce05d0add"></a><!-- doxytag: member="exif-log.h::exif_log_new" ref="a92d3525981d3d604521ca74ce05d0add" args="(void)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a>* exif_log_new </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Create a new logging instance. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="exif-log_8h.html#acd0808d6d5be73f28059797c2e2e67dc" title="Delete instance of ExifLog.">exif_log_free</a></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>new instance of <a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b" title="State maintained by the logging interface.">ExifLog</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a493a369b7020265971cdaf8be9a2f6fe"></a><!-- doxytag: member="exif-log.h::exif_log_set_func" ref="a493a369b7020265971cdaf8be9a2f6fe" args="(ExifLog *log, ExifLogFunc func, void *data)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void exif_log_set_func </td>
<td>(</td>
<td class="paramtype"><a class="el" href="exif-log_8h.html#a6b225115984bb2016282923cb487f16b">ExifLog</a> * </td>
<td class="paramname"><em>log</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="exif-log_8h.html#a5f19ac102b6d554320d6afb32f85c3d3">ExifLogFunc</a> </td>
<td class="paramname"><em>func</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>data</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Register log callback function. </p>
<p>Calls to the log callback function are purely for diagnostic purposes.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">log</td><td>logging state variable </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">func</td><td>callback function to set </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">data</td><td>data to pass into callback function </td></tr>
</table>
</dd>
</dl>
</div>
</div>
</div>
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