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| <a href="#GstGLFilter.object-hierarchy" class="shortcut">Object Hierarchy</a></span> |
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| <div class="refentry"> |
| <a name="GstGLFilter"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="GstGLFilter.top_of_page"></a>GstGLFilter</span></h2> |
| <p>GstGLFilter</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.functions"></a><h2>Functions</h2> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="functions_return"> |
| <col class="functions_name"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="function_type"> |
| <span class="returnvalue">void</span> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstGLFilter.html#gst-gl-filter-draw-texture" title="gst_gl_filter_draw_texture ()">gst_gl_filter_draw_texture</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="GstGLFilter.html#gst-gl-filter-render-to-target" title="gst_gl_filter_render_to_target ()">gst_gl_filter_render_to_target</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="GstGLFilter.html#gst-gl-filter-render-to-target-with-shader" title="gst_gl_filter_render_to_target_with_shader ()">gst_gl_filter_render_to_target_with_shader</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GstGLFilter.html#gst-gl-filter-filter-texture" title="gst_gl_filter_filter_texture ()">gst_gl_filter_filter_texture</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="name"> |
| <col class="description"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="datatype_keyword"> </td> |
| <td class="function_name"><a class="link" href="GstGLFilter.html#GstGLFilter-struct" title="GstGLFilter">GstGLFilter</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword"> </td> |
| <td class="function_name"><a class="link" href="GstGLFilter.html#GstGLFilterClass" title="GstGLFilterClass">GstGLFilterClass</a></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| <span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseTransform.html">GstBaseTransform</a> |
| <span class="lineart">╰──</span> <a class="link" href="GstGLBaseFilter.html" title="GstGLBaseFilter">GstGLBaseFilter</a> |
| <span class="lineart">╰──</span> GstGLFilter |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.description"></a><h2>Description</h2> |
| </div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="gst-gl-filter-draw-texture"></a><h3>gst_gl_filter_draw_texture ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_gl_filter_draw_texture (<em class="parameter"><code><a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a> *filter</code></em>, |
| <em class="parameter"><code><span class="type">GLuint</span> texture</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> width</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> height</code></em>);</pre> |
| <p>Draws <em class="parameter"><code>texture</code></em> |
| into the OpenGL scene at the specified <em class="parameter"><code>width</code></em> |
| and <em class="parameter"><code>height</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.7.2.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table 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>filter</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>texture</p></td> |
| <td class="parameter_description"><p>the texture to draw</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>width</p></td> |
| <td class="parameter_description"><p>width of <em class="parameter"><code>texture</code></em> |
| </p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>height</p></td> |
| <td class="parameter_description"><p>height of texture</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-gl-filter-render-to-target"></a><h3>gst_gl_filter_render_to_target ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_gl_filter_render_to_target (<em class="parameter"><code><a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a> *filter</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> resize</code></em>, |
| <em class="parameter"><code><span class="type">GLuint</span> input</code></em>, |
| <em class="parameter"><code><span class="type">GLuint</span> target</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-bad-libs-Utilities.html#GLCB:CAPS" title="GLCB ()"><span class="type">GLCB</span></a> func</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre> |
| <p>Transforms <em class="parameter"><code>input</code></em> |
| into <em class="parameter"><code>output</code></em> |
| using <em class="parameter"><code>func</code></em> |
| on through FBO. <em class="parameter"><code>resize</code></em> |
| should |
| only ever be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> whenever <em class="parameter"><code>input</code></em> |
| is the input texture of <em class="parameter"><code>filter</code></em> |
| .</p> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.7.3.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table 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>filter</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>resize</p></td> |
| <td class="parameter_description"><p>whether to automatically resize the texture between the input size |
| and the output size</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>input</p></td> |
| <td class="parameter_description"><p>the input texture</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>target</p></td> |
| <td class="parameter_description"><p>the output texture</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>func</p></td> |
| <td class="parameter_description"><p>the function to transform <em class="parameter"><code>input</code></em> |
| into <em class="parameter"><code>output</code></em> |
| . called with <em class="parameter"><code>data</code></em> |
| </p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>data</p></td> |
| <td class="parameter_description"><p>the data associated with <em class="parameter"><code>func</code></em> |
| </p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-gl-filter-render-to-target-with-shader"></a><h3>gst_gl_filter_render_to_target_with_shader ()</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| gst_gl_filter_render_to_target_with_shader |
| (<em class="parameter"><code><a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a> *filter</code></em>, |
| <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> resize</code></em>, |
| <em class="parameter"><code><span class="type">GLuint</span> input</code></em>, |
| <em class="parameter"><code><span class="type">GLuint</span> target</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-bad-libs-gstglshader.html#GstGLShader"><span class="type">GstGLShader</span></a> *shader</code></em>);</pre> |
| <p>Transforms <em class="parameter"><code>input</code></em> |
| into <em class="parameter"><code>output</code></em> |
| using <em class="parameter"><code>shader</code></em> |
| on FBO. <em class="parameter"><code>resize</code></em> |
| should |
| only ever be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> whenever <em class="parameter"><code>input</code></em> |
| is the input texture of <em class="parameter"><code>filter</code></em> |
| .</p> |
| <p>See also: <a class="link" href="GstGLFilter.html#gst-gl-filter-render-to-target" title="gst_gl_filter_render_to_target ()"><code class="function">gst_gl_filter_render_to_target()</code></a></p> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.7.4.6"></a><h4>Parameters</h4> |
| <div class="informaltable"><table 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>filter</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>resize</p></td> |
| <td class="parameter_description"><p>whether to automatically resize the texture between the input size |
| and the output size</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>input</p></td> |
| <td class="parameter_description"><p>the input texture</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>target</p></td> |
| <td class="parameter_description"><p>the output texture</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>shader</p></td> |
| <td class="parameter_description"><p>the shader to use.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-gl-filter-filter-texture"></a><h3>gst_gl_filter_filter_texture ()</h3> |
| <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| gst_gl_filter_filter_texture (<em class="parameter"><code><a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a> *filter</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBuffer.html"><span class="type">GstBuffer</span></a> *inbuf</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBuffer.html"><span class="type">GstBuffer</span></a> *outbuf</code></em>);</pre> |
| <p>Perform automatic upload if needed, call filter_texture vfunc and then an |
| automatic download if needed.</p> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.7.5.5"></a><h4>Parameters</h4> |
| <div class="informaltable"><table 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>filter</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>inbuf</p></td> |
| <td class="parameter_description"><p>an input buffer</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>outbuf</p></td> |
| <td class="parameter_description"><p>an output buffer</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.7.5.6"></a><h4>Returns</h4> |
| <p> whether the transformation succeeded</p> |
| <p></p> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GstGLFilter.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstGLFilter-struct"></a><h3>GstGLFilter</h3> |
| <pre class="programlisting">typedef struct _GstGLFilter GstGLFilter;</pre> |
| <p><a class="link" href="GstGLFilter.html" title="GstGLFilter"><span class="type">GstGLFilter</span></a> is a base class that provides the logic of getting the GL context |
| from downstream and automatic upload/download for non-<a class="link" href="gst-plugins-bad-libs-gstglmemory.html#GstGLMemory" title="GstGLMemory"><span class="type">GstGLMemory</span></a> |
| <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBuffer.html"><span class="type">GstBuffer</span></a>s.</p> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.8.2.5"></a><h4>Members</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="300px" class="struct_members_name"> |
| <col class="struct_members_description"> |
| <col width="200px" class="struct_members_annotations"> |
| </colgroup> |
| <tbody></tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstGLFilterClass"></a><h3>GstGLFilterClass</h3> |
| <pre class="programlisting">typedef struct { |
| GstGLBaseFilterClass parent_class; |
| |
| gboolean (*set_caps) (GstGLFilter* filter, GstCaps* incaps, GstCaps* outcaps); |
| gboolean (*filter) (GstGLFilter *filter, GstBuffer *inbuf, GstBuffer *outbuf); |
| gboolean (*filter_texture) (GstGLFilter *filter, guint in_tex, guint out_tex); |
| gboolean (*onInitFBO) (GstGLFilter *filter); |
| |
| void (*onStart) (GstGLFilter *filter); |
| void (*onStop) (GstGLFilter *filter); |
| void (*onReset) (GstGLFilter *filter); |
| |
| /* useful to init and cleanup custom gl resources */ |
| void (*display_init_cb) (GstGLFilter *filter); |
| void (*display_reset_cb) (GstGLFilter *filter); |
| } GstGLFilterClass; |
| </pre> |
| <div class="refsect3"> |
| <a name="id-1.2.9.15.8.3.4"></a><h4>Members</h4> |
| <div class="informaltable"><table width="100%" border="0"> |
| <colgroup> |
| <col width="300px" class="struct_members_name"> |
| <col class="struct_members_description"> |
| <col width="200px" class="struct_members_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="struct_member_name"><p><a class="link" href="GstGLBaseFilter.html#GstGLBaseFilterClass" title="GstGLBaseFilterClass"><span class="type">GstGLBaseFilterClass</span></a> <em class="structfield"><code><a name="GstGLFilterClass.parent-class"></a>parent_class</code></em>;</p></td> |
| <td> </td> |
| <td> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.set-caps"></a>set_caps</code></em> ()</p></td> |
| <td class="struct_member_description"><p>mirror from <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseTransform.html"><span class="type">GstBaseTransform</span></a></p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.filter"></a>filter</code></em> ()</p></td> |
| <td class="struct_member_description"><p>perform operations on the input and output buffers. In general, |
| you should avoid using this method if at all possible. One valid |
| use-case for using this is keeping previous buffers for future calculations. |
| Note: If <em class="parameter"><code>filter</code></em> |
| exists, then <em class="parameter"><code>filter_texture</code></em> |
| is not run</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.filter-texture"></a>filter_texture</code></em> ()</p></td> |
| <td class="struct_member_description"><p>given <em class="parameter"><code>in_tex</code></em> |
| , transform it into <em class="parameter"><code>out_tex</code></em> |
| . Not used |
| if <em class="parameter"><code>filter</code></em> |
| exists</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.onInitFBO"></a>onInitFBO</code></em> ()</p></td> |
| <td class="struct_member_description"><p>perform initialization when the Framebuffer object is created</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.onStart"></a>onStart</code></em> ()</p></td> |
| <td class="struct_member_description"><p>called when element activates see also <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseTransform.html"><span class="type">GstBaseTransform</span></a></p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.onStop"></a>onStop</code></em> ()</p></td> |
| <td class="struct_member_description"><p>called when the element deactivates e also <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseTransform.html"><span class="type">GstBaseTransform</span></a></p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.onReset"></a>onReset</code></em> ()</p></td> |
| <td class="struct_member_description"><p>called on inizialation and after <em class="parameter"><code>onStop</code></em> |
| </p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.display-init-cb"></a>display_init_cb</code></em> ()</p></td> |
| <td class="struct_member_description"><p>execute arbitrary gl code on start</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><em class="structfield"><code><a name="GstGLFilterClass.display-reset-cb"></a>display_reset_cb</code></em> ()</p></td> |
| <td class="struct_member_description"><p>execute arbitrary gl code at stop</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| </div> |
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