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<div class="title">/cygdrive/i/Sources/sdl2gfx/SDL2_framerate.c File Reference</div> </div>
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<div class="textblock"><code>#include "<a class="el" href="_s_d_l2__framerate_8h_source.html">SDL2_framerate.h</a>"</code><br />
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<p><a href="_s_d_l2__framerate_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
<tr class="memitem:a3bed31ab61648f7d69c8f47c90161cfe"><td class="memItemLeft" align="right" valign="top">Uint32 </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#a3bed31ab61648f7d69c8f47c90161cfe">_getTicks</a> ()</td></tr>
<tr class="memdesc:a3bed31ab61648f7d69c8f47c90161cfe"><td class="mdescLeft"> </td><td class="mdescRight">Internal wrapper to SDL_GetTicks that ensures a non-zero return value. <a href="#a3bed31ab61648f7d69c8f47c90161cfe">More...</a><br /></td></tr>
<tr class="separator:a3bed31ab61648f7d69c8f47c90161cfe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a444ebaaaa6b1ceeafa921562bdab1a44"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#a444ebaaaa6b1ceeafa921562bdab1a44">SDL_initFramerate</a> (<a class="el" href="struct_f_p_smanager.html">FPSmanager</a> *manager)</td></tr>
<tr class="memdesc:a444ebaaaa6b1ceeafa921562bdab1a44"><td class="mdescLeft"> </td><td class="mdescRight">Initialize the framerate manager. <a href="#a444ebaaaa6b1ceeafa921562bdab1a44">More...</a><br /></td></tr>
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<tr class="memitem:afad4b503cf9719daced45fa4d9653d72"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#afad4b503cf9719daced45fa4d9653d72">SDL_setFramerate</a> (<a class="el" href="struct_f_p_smanager.html">FPSmanager</a> *manager, Uint32 rate)</td></tr>
<tr class="memdesc:afad4b503cf9719daced45fa4d9653d72"><td class="mdescLeft"> </td><td class="mdescRight">Set the framerate in Hz. <a href="#afad4b503cf9719daced45fa4d9653d72">More...</a><br /></td></tr>
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<tr class="memitem:a575bb511d6f817ad846a788cbd08ae91"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#a575bb511d6f817ad846a788cbd08ae91">SDL_getFramerate</a> (<a class="el" href="struct_f_p_smanager.html">FPSmanager</a> *manager)</td></tr>
<tr class="memdesc:a575bb511d6f817ad846a788cbd08ae91"><td class="mdescLeft"> </td><td class="mdescRight">Return the current target framerate in Hz. <a href="#a575bb511d6f817ad846a788cbd08ae91">More...</a><br /></td></tr>
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<tr class="memitem:a96b13e26f8436222e866904a592a6eec"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#a96b13e26f8436222e866904a592a6eec">SDL_getFramecount</a> (<a class="el" href="struct_f_p_smanager.html">FPSmanager</a> *manager)</td></tr>
<tr class="memdesc:a96b13e26f8436222e866904a592a6eec"><td class="mdescLeft"> </td><td class="mdescRight">Return the current framecount. <a href="#a96b13e26f8436222e866904a592a6eec">More...</a><br /></td></tr>
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<tr class="memitem:afce13fa3dd37130deb4975d8b230c3ba"><td class="memItemLeft" align="right" valign="top">Uint32 </td><td class="memItemRight" valign="bottom"><a class="el" href="_s_d_l2__framerate_8c.html#afce13fa3dd37130deb4975d8b230c3ba">SDL_framerateDelay</a> (<a class="el" href="struct_f_p_smanager.html">FPSmanager</a> *manager)</td></tr>
<tr class="memdesc:afce13fa3dd37130deb4975d8b230c3ba"><td class="mdescLeft"> </td><td class="mdescRight">Delay execution to maintain a constant framerate and calculate fps. <a href="#afce13fa3dd37130deb4975d8b230c3ba">More...</a><br /></td></tr>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">Uint32 _getTicks </td>
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<td class="paramname"></td><td>)</td>
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<p>Internal wrapper to SDL_GetTicks that ensures a non-zero return value. </p>
<dl class="section return"><dt>Returns</dt><dd>The tick count. </dd></dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00037">37</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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<td class="memname">Uint32 SDL_framerateDelay </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_f_p_smanager.html">FPSmanager</a> * </td>
<td class="paramname"><em>manager</em></td><td>)</td>
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<p>Delay execution to maintain a constant framerate and calculate fps. </p>
<p>Generate a delay to accomodate currently set framerate. Call once in the graphics/rendering loop. If the computer cannot keep up with the rate (i.e. drawing too slow), the delay is zero and the delay interpolation is reset.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">manager</td><td>Pointer to the framerate manager.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The time that passed since the last call to the function in ms. May return 0. </dd></dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00146">146</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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<td class="memname">int SDL_getFramecount </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_f_p_smanager.html">FPSmanager</a> * </td>
<td class="paramname"><em>manager</em></td><td>)</td>
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<p>Return the current framecount. </p>
<p>Get the current framecount from the framerate manager. A frame is counted each time SDL_framerateDelay is called.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">manager</td><td>Pointer to the framerate manager.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Current frame count or -1 for error. </dd></dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00126">126</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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<td class="memname">int SDL_getFramerate </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_f_p_smanager.html">FPSmanager</a> * </td>
<td class="paramname"><em>manager</em></td><td>)</td>
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<p>Return the current target framerate in Hz. </p>
<p>Get the currently set framerate of the manager.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">manager</td><td>Pointer to the framerate manager.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Current framerate in Hz or -1 for error. </dd></dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00107">107</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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<td class="memname">void SDL_initFramerate </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_f_p_smanager.html">FPSmanager</a> * </td>
<td class="paramname"><em>manager</em></td><td>)</td>
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<p>Initialize the framerate manager. </p>
<p>Initialize the framerate manager, set default framerate of 30Hz and reset delay interpolation.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">manager</td><td>Pointer to the framerate manager. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00062">62</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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<td class="memname">int SDL_setFramerate </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_f_p_smanager.html">FPSmanager</a> * </td>
<td class="paramname"><em>manager</em>, </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">Uint32 </td>
<td class="paramname"><em>rate</em> </td>
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<td></td>
<td>)</td>
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<p>Set the framerate in Hz. </p>
<p>Sets a new framerate for the manager and reset delay interpolation. Rate values must be between FPS_LOWER_LIMIT and FPS_UPPER_LIMIT inclusive to be accepted.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">manager</td><td>Pointer to the framerate manager. </td></tr>
<tr><td class="paramname">rate</td><td>The new framerate in Hz (frames per second).</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 for sucess and -1 for error. </dd></dl>
<p>Definition at line <a class="el" href="_s_d_l2__framerate_8c_source.html#l00086">86</a> of file <a class="el" href="_s_d_l2__framerate_8c_source.html">SDL2_framerate.c</a>.</p>
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