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<h1>Driver-Specific modes</h1>Raw and Suspend Modes mechanism.
<a href="#_details">More...</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#gd636a35db7cf7b2eaa67e6bd6d166a95">brlapi_enterRawMode</a> (const char *driver)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g5a0244346b4f859e14521afef6a91664">brlapi__enterRawMode</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle, const char *driver)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g9eb1166b438ea8bc0c6dc9b38c3b083e">brlapi_leaveRawMode</a> (void)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g29c7743faa13515a1624bd8be8c5a64b">brlapi__leaveRawMode</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">ssize_t BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#ga8eaa8778257fcddfe06190ba7b9abc8">brlapi_sendRaw</a> (const void *buffer, size_t size)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">ssize_t BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g520c2340bfba0b08e18831f778a056e1">brlapi__sendRaw</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle, const void *buffer, size_t size)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">ssize_t BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#gff4acf20bdbca4bf2d00e38385480178">brlapi_recvRaw</a> (void *buffer, size_t size)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">ssize_t BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#gb4c95e41767ba67d13f72049a85898dc">brlapi__recvRaw</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle, void *buffer, size_t size)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#gf8f3c595385588c557ee168ece7ec9f9">brlapi_suspendDriver</a> (const char *driver)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g85b90b4b07b15e6784df102058faf888">brlapi__suspendDriver</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle, const char *driver)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g06d97a714703c593ec543e0cba6070ff">brlapi_resumeDriver</a> (void)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int BRLAPI_STDCALL </td><td class="memItemRight" valign="bottom"><a class="el" href="group__brlapi__driverspecific.html#g353389dd0c2cbe42bd5cc9a04ad3cc8b">brlapi__resumeDriver</a> (<a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> *handle)</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
If the application wants to directly talk to the braille terminal, it should use Raw Mode. In this special mode, the driver gives the whole control of the terminal to it: <em>brltty</em> doesn't work any more.<p>
For this, it simply has to call <a class="el" href="group__brlapi__driverspecific.html#gd636a35db7cf7b2eaa67e6bd6d166a95">brlapi_enterRawMode()</a>, then <a class="el" href="group__brlapi__driverspecific.html#ga8eaa8778257fcddfe06190ba7b9abc8">brlapi_sendRaw()</a> and <a class="el" href="group__brlapi__driverspecific.html#gff4acf20bdbca4bf2d00e38385480178">brlapi_recvRaw()</a>, and finally give control back thanks to <a class="el" href="group__brlapi__driverspecific.html#g9eb1166b438ea8bc0c6dc9b38c3b083e">brlapi_leaveRawMode()</a>.<p>
Special care of the terminal should be taken, since one might completely trash the terminal's data, or even lock it! The application should always check for terminal's type thanks to <a class="el" href="group__brlapi__info.html#g2dcd2285e75571a861c1f9c27a44bd0f">brlapi_getDriverName()</a>.<p>
The client can also make brltty close the driver by using <a class="el" href="group__brlapi__driverspecific.html#gf8f3c595385588c557ee168ece7ec9f9">brlapi_suspendDriver()</a>, and resume it again with <a class="el" href="group__brlapi__driverspecific.html#g06d97a714703c593ec543e0cba6070ff">brlapi_resumeDriver()</a>. This should not be used if possible: raw mode should be sufficient for any use. If not, please ask for features :) <hr><h2>Function Documentation</h2>
<a class="anchor" name="g5a0244346b4f859e14521afef6a91664"></a><!-- doxytag: member="brlapi.h::brlapi__enterRawMode" ref="g5a0244346b4f859e14521afef6a91664" args="(brlapi_handle_t *handle, const char *driver)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi__enterRawMode </td>
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<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
<td class="paramname"> <em>handle</em>, </td>
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<td class="paramtype">const char * </td>
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<a class="anchor" name="g29c7743faa13515a1624bd8be8c5a64b"></a><!-- doxytag: member="brlapi.h::brlapi__leaveRawMode" ref="g29c7743faa13515a1624bd8be8c5a64b" args="(brlapi_handle_t *handle)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi__leaveRawMode </td>
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<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
<td class="paramname"> <em>handle</em> </td>
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<a class="anchor" name="gb4c95e41767ba67d13f72049a85898dc"></a><!-- doxytag: member="brlapi.h::brlapi__recvRaw" ref="gb4c95e41767ba67d13f72049a85898dc" args="(brlapi_handle_t *handle, void *buffer, size_t size)" -->
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<td class="memname">ssize_t BRLAPI_STDCALL brlapi__recvRaw </td>
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<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
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<td class="paramtype">void * </td>
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<a class="anchor" name="g353389dd0c2cbe42bd5cc9a04ad3cc8b"></a><!-- doxytag: member="brlapi.h::brlapi__resumeDriver" ref="g353389dd0c2cbe42bd5cc9a04ad3cc8b" args="(brlapi_handle_t *handle)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi__resumeDriver </td>
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<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
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<a class="anchor" name="g520c2340bfba0b08e18831f778a056e1"></a><!-- doxytag: member="brlapi.h::brlapi__sendRaw" ref="g520c2340bfba0b08e18831f778a056e1" args="(brlapi_handle_t *handle, const void *buffer, size_t size)" -->
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<td class="memname">ssize_t BRLAPI_STDCALL brlapi__sendRaw </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
<td class="paramname"> <em>handle</em>, </td>
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<td class="paramtype">const void * </td>
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<a class="anchor" name="g85b90b4b07b15e6784df102058faf888"></a><!-- doxytag: member="brlapi.h::brlapi__suspendDriver" ref="g85b90b4b07b15e6784df102058faf888" args="(brlapi_handle_t *handle, const char *driver)" -->
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<td class="paramtype"><a class="el" href="group__brlapi__handles.html#g57f2aec62b18f8aefea2ab550744b0c1">brlapi_handle_t</a> * </td>
<td class="paramname"> <em>handle</em>, </td>
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<a class="anchor" name="gd636a35db7cf7b2eaa67e6bd6d166a95"></a><!-- doxytag: member="brlapi.h::brlapi_enterRawMode" ref="gd636a35db7cf7b2eaa67e6bd6d166a95" args="(const char *driver)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi_enterRawMode </td>
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Switch to Raw mode <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>driver</em> </td><td>Specifies the name of the driver for which the raw communication will be established. </td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>0 on success, -1 on error </dd></dl>
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<a class="anchor" name="g9eb1166b438ea8bc0c6dc9b38c3b083e"></a><!-- doxytag: member="brlapi.h::brlapi_leaveRawMode" ref="g9eb1166b438ea8bc0c6dc9b38c3b083e" args="(void)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi_leaveRawMode </td>
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<td class="paramtype">void </td>
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Leave Raw mode <dl class="return" compact><dt><b>Returns:</b></dt><dd>0 on success, -1 on error </dd></dl>
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<a class="anchor" name="gff4acf20bdbca4bf2d00e38385480178"></a><!-- doxytag: member="brlapi.h::brlapi_recvRaw" ref="gff4acf20bdbca4bf2d00e38385480178" args="(void *buffer, size_t size)" -->
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<td class="memname">ssize_t BRLAPI_STDCALL brlapi_recvRaw </td>
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<td class="paramtype">void * </td>
<td class="paramname"> <em>buffer</em>, </td>
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Get Raw data<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>points on a buffer where the function will store the received data; </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>holds the buffer size. </td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>its size, -1 on error or signal interruption </dd></dl>
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<a class="anchor" name="g06d97a714703c593ec543e0cba6070ff"></a><!-- doxytag: member="brlapi.h::brlapi_resumeDriver" ref="g06d97a714703c593ec543e0cba6070ff" args="(void)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi_resumeDriver </td>
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Resume braille driver <dl class="return" compact><dt><b>Returns:</b></dt><dd>-1 on error </dd></dl>
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<a class="anchor" name="ga8eaa8778257fcddfe06190ba7b9abc8"></a><!-- doxytag: member="brlapi.h::brlapi_sendRaw" ref="ga8eaa8778257fcddfe06190ba7b9abc8" args="(const void *buffer, size_t size)" -->
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<td class="paramtype">const void * </td>
<td class="paramname"> <em>buffer</em>, </td>
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Send Raw data<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>points on the data; </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>holds the packet size. </td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>size on success, -1 on error </dd></dl>
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<a class="anchor" name="gf8f3c595385588c557ee168ece7ec9f9"></a><!-- doxytag: member="brlapi.h::brlapi_suspendDriver" ref="gf8f3c595385588c557ee168ece7ec9f9" args="(const char *driver)" -->
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<td class="memname">int BRLAPI_STDCALL brlapi_suspendDriver </td>
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Suspend braille driver <dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>driver</em> </td><td>Specifies the name of the driver which will be suspended. </td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>-1 on error </dd></dl>
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