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| <h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-gltransformation.top_of_page"></a>gltransformation</span></h2> |
| <p>gltransformation</p> |
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| <div class="refsect1"> |
| <a name="gst-plugins-bad-plugins-gltransformation.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-bad-plugins-gltransformation.html#GstGLTransformation" title="struct GstGLTransformation">GstGLTransformation</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-bad-plugins-gltransformation.description"></a><h2>Description</h2> |
| <p>Transforms video on the GPU.</p> |
| <div class="refsect2"> |
| <a name="id-1.2.83.4.3"></a><h3>Examples</h3> |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> gltestsrc <span class="gtkdoc opt">!</span> gltransformation rotation<span class="gtkdoc opt">-</span>z<span class="gtkdoc opt">=</span><span class="number">45</span> <span class="gtkdoc opt">!</span> glimagesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| A pipeline to rotate by 45 degrees |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> gltestsrc <span class="gtkdoc opt">!</span> gltransformation translation<span class="gtkdoc opt">-</span>x<span class="gtkdoc opt">=</span><span class="number">0.5</span> <span class="gtkdoc opt">!</span> glimagesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| Translate the video by 0.5 |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> gltestsrc <span class="gtkdoc opt">!</span> gltransformation scale<span class="gtkdoc opt">-</span>y<span class="gtkdoc opt">=</span><span class="number">0.5</span> scale<span class="gtkdoc opt">-</span>x<span class="gtkdoc opt">=</span><span class="number">0.5</span> <span class="gtkdoc opt">!</span> glimagesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| Resize the video by 0.5 |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> gltestsrc <span class="gtkdoc opt">!</span> gltransformation rotation<span class="gtkdoc opt">-</span>x<span class="gtkdoc opt">=-</span><span class="number">45</span> ortho<span class="gtkdoc opt">=</span>True <span class="gtkdoc opt">!</span> glimagesink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| Rotate the video around the X-Axis by -45° with an orthographic projection |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-bad-plugins-gltransformation.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-bad-plugins-gltransformation.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstGLTransformation"></a><h3>struct GstGLTransformation</h3> |
| <pre class="programlisting">struct GstGLTransformation { |
| GstGLFilter filter; |
| |
| GstGLShader *shader; |
| GLuint vao; |
| GLuint vbo_indices; |
| GLuint vertex_buffer; |
| GLint attr_position; |
| GLint attr_texture; |
| |
| GstGLMemory *in_tex; |
| GstGLMemory *out_tex; |
| |
| gfloat xrotation; |
| gfloat yrotation; |
| gfloat zrotation; |
| |
| gfloat xscale; |
| gfloat yscale; |
| |
| gfloat xtranslation; |
| gfloat ytranslation; |
| gfloat ztranslation; |
| |
| gfloat xpivot; |
| gfloat ypivot; |
| gfloat zpivot; |
| |
| /* perspective */ |
| gfloat fov; |
| gfloat aspect; |
| gfloat znear; |
| gfloat zfar; |
| gboolean ortho; |
| |
| graphene_matrix_t model_matrix; |
| graphene_matrix_t view_matrix; |
| graphene_matrix_t projection_matrix; |
| graphene_matrix_t inv_model_matrix; |
| graphene_matrix_t inv_view_matrix; |
| graphene_matrix_t inv_projection_matrix; |
| graphene_matrix_t mvp_matrix; |
| |
| graphene_vec3_t camera_position; |
| |
| gboolean downstream_supports_affine_meta; |
| gboolean caps_change; |
| }; |
| </pre> |
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