| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>gstvideoaffinetransformationmeta: GStreamer Base Plugins 1.0 Library Reference Manual</title> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> |
| <link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Library Reference Manual"> |
| <link rel="up" href="gstreamer-video.html" title="Video Library"> |
| <link rel="prev" href="gst-plugins-base-libs-gstvideometa.html" title="gstvideometa"> |
| <link rel="next" href="gst-plugins-base-libs-gstvideooverlaycomposition.html" title="gstvideooverlaycomposition"> |
| <meta name="generator" content="GTK-Doc V1.25 (XML mode)"> |
| <link rel="stylesheet" href="style.css" type="text/css"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> |
| <td width="100%" align="left" class="shortcuts"> |
| <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> |
| <a href="#gst-plugins-base-libs-gstvideoaffinetransformationmeta.description" class="shortcut">Description</a></span> |
| </td> |
| <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> |
| <td><a accesskey="u" href="gstreamer-video.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> |
| <td><a accesskey="p" href="gst-plugins-base-libs-gstvideometa.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> |
| <td><a accesskey="n" href="gst-plugins-base-libs-gstvideooverlaycomposition.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> |
| </tr></table> |
| <div class="refentry"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.top_of_page"></a>gstvideoaffinetransformationmeta</span></h2> |
| <p>gstvideoaffinetransformationmeta</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.functions"></a><h2>Functions</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="functions_return"> |
| <col class="functions_name"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta"><span class="returnvalue">GstVideoAffineTransformationMeta</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#gst-buffer-add-video-affine-transformation-meta" title="gst_buffer_add_video_affine_transformation_meta ()">gst_buffer_add_video_affine_transformation_meta</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"> |
| <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#gst-buffer-get-video-affine-transformation-meta" title="gst_buffer_get_video_affine_transformation_meta()">gst_buffer_get_video_affine_transformation_meta</a><span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">void</span> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#gst-video-affine-transformation-meta-apply-matrix" title="gst_video_affine_transformation_meta_apply_matrix ()">gst_video_affine_transformation_meta_apply_matrix</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="name"> |
| <col class="description"> |
| </colgroup> |
| <tbody><tr> |
| <td class="datatype_keyword">struct</td> |
| <td class="function_name"><a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta">GstVideoAffineTransformationMeta</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.includes"></a><h2>Includes</h2> |
| <pre class="synopsis">#include <gst/video/gstvideoaffinetransformationmeta.h> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.description"></a><h2>Description</h2> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-affine-transformation-meta"></a><h3>gst_buffer_add_video_affine_transformation_meta ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta"><span class="returnvalue">GstVideoAffineTransformationMeta</span></a> * |
| gst_buffer_add_video_affine_transformation_meta |
| (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> *buffer</code></em>);</pre> |
| <p>Attaches GstVideoAffineTransformationMeta metadata to <em class="parameter"><code>buffer</code></em> |
| with |
| the given parameters.</p> |
| <div class="refsect3"> |
| <a name="gst-buffer-add-video-affine-transformation-meta.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody><tr> |
| <td class="parameter_name"><p>buffer</p></td> |
| <td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-1.0GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-buffer-add-video-affine-transformation-meta.returns"></a><h4>Returns</h4> |
| <p> the <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta"><span class="type">GstVideoAffineTransformationMeta</span></a> on <em class="parameter"><code>buffer</code></em> |
| . </p> |
| <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p> |
| </div> |
| <p class="since">Since: 1.8</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-affine-transformation-meta"></a><h3>gst_buffer_get_video_affine_transformation_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_get_video_affine_transformation_meta(b)</pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-video-affine-transformation-meta-apply-matrix"></a><h3>gst_video_affine_transformation_meta_apply_matrix ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_video_affine_transformation_meta_apply_matrix |
| (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta"><span class="type">GstVideoAffineTransformationMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> matrix[16]</code></em>);</pre> |
| <p>Apply a transformation using the given 4x4 transformation matrix</p> |
| <div class="refsect3"> |
| <a name="gst-video-affine-transformation-meta-apply-matrix.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="parameter_name"><p>meta</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstvideoaffinetransformationmeta.html#GstVideoAffineTransformationMeta" title="struct GstVideoAffineTransformationMeta"><span class="type">GstVideoAffineTransformationMeta</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>matrix</p></td> |
| <td class="parameter_description"><p>a 4x4 transformation matrix to be applied</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <p class="since">Since: 1.8</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideoaffinetransformationmeta.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstVideoAffineTransformationMeta"></a><h3>struct GstVideoAffineTransformationMeta</h3> |
| <pre class="programlisting">struct GstVideoAffineTransformationMeta { |
| GstMeta meta; |
| |
| gfloat matrix[16]; |
| }; |
| </pre> |
| </div> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr>Generated by GTK-Doc V1.25</div> |
| </body> |
| </html> |
