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| <a href="#gst-plugins-base-libs-gstvideometa.synopsis" class="shortcut">Top</a> |
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| <a href="#gst-plugins-base-libs-gstvideometa.description" class="shortcut">Description</a> |
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| <a name="gst-plugins-base-libs-gstvideometa"></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-gstvideometa.top_of_page"></a>gstvideometa</span></h2> |
| <p>gstvideometa</p> |
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| <div class="refsynopsisdiv"> |
| <a name="gst-plugins-base-libs-gstvideometa.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <gst/video/gstvideometa.h> |
| |
| struct <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta">GstVideoMeta</a>; |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMetaTransform" title="GstVideoMetaTransform">GstVideoMetaTransform</a>; |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-meta-map" title="gst_video_meta_map ()">gst_video_meta_map</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> *info</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> *data</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *stride</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapFlags"><span class="type">GstMapFlags</span></a> flags</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-meta-unmap" title="gst_video_meta_unmap ()">gst_video_meta_unmap</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> *info</code></em>); |
| const <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMetaInfo"><span class="returnvalue">GstMetaInfo</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-meta-get-info" title="gst_video_meta_get_info ()">gst_video_meta_get_info</a> (<em class="parameter"><code><span class="type">void</span></code></em>); |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-meta" title="gst_buffer_add_video_meta ()">gst_buffer_add_video_meta</a> (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a> flags</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> format</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> width</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> height</code></em>); |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-meta-full" title="gst_buffer_add_video_meta_full ()">gst_buffer_add_video_meta_full</a> (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a> flags</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> format</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> width</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> height</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> n_planes</code></em>, |
| <em class="parameter"><code><span class="type">gsize</span> offset[GST_VIDEO_MAX_PLANES]</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> stride[GST_VIDEO_MAX_PLANES]</code></em>); |
| #define <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-meta" title="gst_buffer_get_video_meta()">gst_buffer_get_video_meta</a> (b) |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-meta-id" title="gst_buffer_get_video_meta_id ()">gst_buffer_get_video_meta_id</a> (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> id</code></em>); |
| struct <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoCropMeta" title="struct GstVideoCropMeta">GstVideoCropMeta</a>; |
| #define <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-crop-meta" title="gst_buffer_add_video_crop_meta()">gst_buffer_add_video_crop_meta</a> (b) |
| #define <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-crop-meta" title="gst_buffer_get_video_crop_meta()">gst_buffer_get_video_crop_meta</a> (b) |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta">GstVideoRegionOfInterestMeta</a>; |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-region-of-interest-meta" title="gst_buffer_add_video_region_of_interest_meta ()">gst_buffer_add_video_region_of_interest_meta</a> |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *roi_type</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> x</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> y</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> w</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> h</code></em>); |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-region-of-interest-meta-id" title="gst_buffer_add_video_region_of_interest_meta_id ()">gst_buffer_add_video_region_of_interest_meta_id</a> |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> roi_type</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> x</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> y</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> w</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> h</code></em>); |
| #define <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-region-of-interest-meta" title="gst_buffer_get_video_region_of_interest_meta()">gst_buffer_get_video_region_of_interest_meta</a>(b) |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-region-of-interest-meta-id" title="gst_buffer_get_video_region_of_interest_meta_id ()">gst_buffer_get_video_region_of_interest_meta_id</a> |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> id</code></em>); |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (<a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUpload" title="GstVideoGLTextureUpload ()">*GstVideoGLTextureUpload</a>) (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> texture_id[4]</code></em>); |
| struct <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta">GstVideoGLTextureUploadMeta</a>; |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="returnvalue">GstVideoGLTextureUploadMeta</span></a> * <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-gl-texture-upload-meta" title="gst_buffer_add_video_gl_texture_upload_meta ()">gst_buffer_add_video_gl_texture_upload_meta</a> |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><span class="type">GstVideoGLTextureOrientation</span> texture_orientation</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> n_textures</code></em>, |
| <em class="parameter"><code><span class="type">GstVideoGLTextureType</span> texture_type[4]</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUpload" title="GstVideoGLTextureUpload ()"><span class="type">GstVideoGLTextureUpload</span></a> upload</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Boxed-Types.html#GBoxedCopyFunc"><span class="type">GBoxedCopyFunc</span></a> user_data_copy</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Boxed-Types.html#GBoxedFreeFunc"><span class="type">GBoxedFreeFunc</span></a> user_data_free</code></em>); |
| #define <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-get-video-gl-texture-upload-meta" title="gst_buffer_get_video_gl_texture_upload_meta()">gst_buffer_get_video_gl_texture_upload_meta</a>(b) |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-gl-texture-upload-meta-upload" title="gst_video_gl_texture_upload_meta_upload ()">gst_video_gl_texture_upload_meta_upload</a> |
| (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> texture_id[4]</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideometa.description"></a><h2>Description</h2> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstvideometa.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstVideoMeta"></a><h3>struct GstVideoMeta</h3> |
| <pre class="programlisting">struct GstVideoMeta { |
| GstMeta meta; |
| |
| GstBuffer *buffer; |
| |
| GstVideoFrameFlags flags; |
| GstVideoFormat format; |
| gint id; |
| guint width; |
| guint height; |
| |
| guint n_planes; |
| gsize offset[GST_VIDEO_MAX_PLANES]; |
| gint stride[GST_VIDEO_MAX_PLANES]; |
| |
| gboolean (*map) (GstVideoMeta *meta, guint plane, GstMapInfo *info, |
| gpointer *data, gint * stride, GstMapFlags flags); |
| gboolean (*unmap) (GstVideoMeta *meta, guint plane, GstMapInfo *info); |
| }; |
| </pre> |
| <p> |
| Extra buffer metadata describing image properties |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> <em class="structfield"><code><a name="GstVideoMeta.meta"></a>meta</code></em>;</span></p></td> |
| <td>parent <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *<em class="structfield"><code><a name="GstVideoMeta.buffer"></a>buffer</code></em>;</span></p></td> |
| <td>the buffer this metadata belongs to</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a> <em class="structfield"><code><a name="GstVideoMeta.flags"></a>flags</code></em>;</span></p></td> |
| <td>additional video flags</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> <em class="structfield"><code><a name="GstVideoMeta.format"></a>format</code></em>;</span></p></td> |
| <td>the video format</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstVideoMeta.id"></a>id</code></em>;</span></p></td> |
| <td>identifier of the frame</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoMeta.width"></a>width</code></em>;</span></p></td> |
| <td>the video width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoMeta.height"></a>height</code></em>;</span></p></td> |
| <td>the video height</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoMeta.n-planes"></a>n_planes</code></em>;</span></p></td> |
| <td>the number of planes in the image</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="type">gsize</span> <em class="structfield"><code><a name="GstVideoMeta.offset"></a>offset</code></em>[GST_VIDEO_MAX_PLANES];</span></p></td> |
| <td>array of offsets for the planes. This field might not always be |
| valid, it is used by the default implementation of <em class="parameter"><code>map</code></em>.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstVideoMeta.stride"></a>stride</code></em>[GST_VIDEO_MAX_PLANES];</span></p></td> |
| <td>array of strides for the planes. This field might not always be |
| valid, it is used by the default implementation of <em class="parameter"><code>map</code></em>.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="structfield"><code><a name="GstVideoMeta.map"></a>map</code></em> ()</span></p></td> |
| <td>map the memory of a plane</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="structfield"><code><a name="GstVideoMeta.unmap"></a>unmap</code></em> ()</span></p></td> |
| <td>unmap the memory of a plane</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoMetaTransform"></a><h3>GstVideoMetaTransform</h3> |
| <pre class="programlisting">typedef struct { |
| GstVideoInfo *in_info; |
| GstVideoInfo *out_info; |
| } GstVideoMetaTransform; |
| </pre> |
| <p> |
| Extra data passed to a video transform <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMetaTransformFunction"><span class="type">GstMetaTransformFunction</span></a> such as: |
| "gst-video-scale". |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> *<em class="structfield"><code><a name="GstVideoMetaTransform.in-info"></a>in_info</code></em>;</span></p></td> |
| <td>the input <a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> *<em class="structfield"><code><a name="GstVideoMetaTransform.out-info"></a>out_info</code></em>;</span></p></td> |
| <td>the output <a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoInfo" title="struct GstVideoInfo"><span class="type">GstVideoInfo</span></a> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-video-meta-map"></a><h3>gst_video_meta_map ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_video_meta_map (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> *info</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> *data</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *stride</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapFlags"><span class="type">GstMapFlags</span></a> flags</code></em>);</pre> |
| <p> |
| Map the video plane with index <em class="parameter"><code>plane</code></em> in <em class="parameter"><code>meta</code></em> and return a pointer to the |
| first byte of the plane and the stride of the plane. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>meta</code></em> :</span></p></td> |
| <td>a <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>plane</code></em> :</span></p></td> |
| <td>a plane</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>info</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> |
| <td>the data of <em class="parameter"><code>plane</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>stride</code></em> :</span></p></td> |
| <td>the stride of <em class="parameter"><code>plane</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td> |
| <td><em class="parameter"><code>GstMapFlags</code></em></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>TRUE if the map operation was successful.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-video-meta-unmap"></a><h3>gst_video_meta_unmap ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_video_meta_unmap (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> plane</code></em>, |
| <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> *info</code></em>);</pre> |
| <p> |
| Unmap a previously mapped plane with <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-meta-map" title="gst_video_meta_map ()"><code class="function">gst_video_meta_map()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>meta</code></em> :</span></p></td> |
| <td>a <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>plane</code></em> :</span></p></td> |
| <td>a plane</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>info</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMemory.html#GstMapInfo"><span class="type">GstMapInfo</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>TRUE if the memory was successfully unmapped.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-video-meta-get-info"></a><h3>gst_video_meta_get_info ()</h3> |
| <pre class="programlisting">const <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMetaInfo"><span class="returnvalue">GstMetaInfo</span></a> * gst_video_meta_get_info (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-meta"></a><h3>gst_buffer_add_video_meta ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * gst_buffer_add_video_meta (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a> flags</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> format</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> width</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> height</code></em>);</pre> |
| <p> |
| Attaches GstVideoMeta metadata to <em class="parameter"><code>buffer</code></em> with the given parameters and the |
| default offsets and strides for <em class="parameter"><code>format</code></em> and <em class="parameter"><code>width</code></em> x <em class="parameter"><code>height</code></em>. |
| </p> |
| <p> |
| This function calculates the default offsets and strides and then calls |
| <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-meta-full" title="gst_buffer_add_video_meta_full ()"><code class="function">gst_buffer_add_video_meta_full()</code></a> with them. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td> |
| <td><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td> |
| <td>a <a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td> |
| <td>the width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td> |
| <td>the height</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-meta-full"></a><h3>gst_buffer_add_video_meta_full ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * gst_buffer_add_video_meta_full (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a> flags</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> format</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> width</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> height</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> n_planes</code></em>, |
| <em class="parameter"><code><span class="type">gsize</span> offset[GST_VIDEO_MAX_PLANES]</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> stride[GST_VIDEO_MAX_PLANES]</code></em>);</pre> |
| <p> |
| Attaches GstVideoMeta metadata to <em class="parameter"><code>buffer</code></em> with the given parameters. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td> |
| <td><a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFrameFlags" title="enum GstVideoFrameFlags"><span class="type">GstVideoFrameFlags</span></a></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td> |
| <td>a <a class="link" href="gst-plugins-base-libs-gstvideo.html#GstVideoFormat" title="enum GstVideoFormat"><span class="type">GstVideoFormat</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td> |
| <td>the width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td> |
| <td>the height</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n_planes</code></em> :</span></p></td> |
| <td>number of planes</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>offset</code></em> :</span></p></td> |
| <td>offset of each plane</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>stride</code></em> :</span></p></td> |
| <td>stride of each plane</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-meta"></a><h3>gst_buffer_get_video_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_get_video_meta(b) ((GstVideoMeta*)gst_buffer_get_meta((b),GST_VIDEO_META_API_TYPE)) |
| </pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-meta-id"></a><h3>gst_buffer_get_video_meta_id ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="returnvalue">GstVideoMeta</span></a> * gst_buffer_get_video_meta_id (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> id</code></em>);</pre> |
| <p> |
| Find the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> on <em class="parameter"><code>buffer</code></em> with the given <em class="parameter"><code>id</code></em>. |
| </p> |
| <p> |
| Buffers can contain multiple <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> metadata items when dealing with |
| multiview buffers. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td> |
| <td>a metadata id</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoMeta" title="struct GstVideoMeta"><span class="type">GstVideoMeta</span></a> with <em class="parameter"><code>id</code></em> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when there is no such metadata |
| on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoCropMeta"></a><h3>struct GstVideoCropMeta</h3> |
| <pre class="programlisting">struct GstVideoCropMeta { |
| GstMeta meta; |
| |
| guint x; |
| guint y; |
| guint width; |
| guint height; |
| }; |
| </pre> |
| <p> |
| Extra buffer metadata describing image cropping. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> <em class="structfield"><code><a name="GstVideoCropMeta.meta"></a>meta</code></em>;</span></p></td> |
| <td>parent <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoCropMeta.x"></a>x</code></em>;</span></p></td> |
| <td>the horizontal offset</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoCropMeta.y"></a>y</code></em>;</span></p></td> |
| <td>the vertical offset</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoCropMeta.width"></a>width</code></em>;</span></p></td> |
| <td>the cropped width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoCropMeta.height"></a>height</code></em>;</span></p></td> |
| <td>the cropped height</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-crop-meta"></a><h3>gst_buffer_add_video_crop_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_add_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_add_meta((b),GST_VIDEO_CROP_META_INFO, NULL)) |
| </pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-crop-meta"></a><h3>gst_buffer_get_video_crop_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_get_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_get_meta((b),GST_VIDEO_CROP_META_API_TYPE)) |
| </pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoRegionOfInterestMeta"></a><h3>GstVideoRegionOfInterestMeta</h3> |
| <pre class="programlisting">typedef struct { |
| GstMeta meta; |
| |
| GQuark roi_type; |
| gint id; |
| gint parent_id; |
| |
| guint x; |
| guint y; |
| guint w; |
| guint h; |
| } GstVideoRegionOfInterestMeta; |
| </pre> |
| <p> |
| Extra buffer metadata describing an image region of interest |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.meta"></a>meta</code></em>;</span></p></td> |
| <td>parent <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.roi-type"></a>roi_type</code></em>;</span></p></td> |
| <td>GQuark describing the semantic of the Roi (f.i. a face, a pedestrian)</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.id"></a>id</code></em>;</span></p></td> |
| <td>identifier of this particular ROI</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.parent-id"></a>parent_id</code></em>;</span></p></td> |
| <td>identifier of its parent ROI, used f.i. for ROI hierarchisation.</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.x"></a>x</code></em>;</span></p></td> |
| <td>x component of upper-left corner</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.y"></a>y</code></em>;</span></p></td> |
| <td>y component of upper-left corner</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.w"></a>w</code></em>;</span></p></td> |
| <td></td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoRegionOfInterestMeta.h"></a>h</code></em>;</span></p></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-region-of-interest-meta"></a><h3>gst_buffer_add_video_region_of_interest_meta ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * gst_buffer_add_video_region_of_interest_meta |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *roi_type</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> x</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> y</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> w</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> h</code></em>);</pre> |
| <p> |
| Attaches <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> metadata to <em class="parameter"><code>buffer</code></em> with the given |
| parameters. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>roi_type</code></em> :</span></p></td> |
| <td>Type of the region of interest (e.g. "face")</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> |
| <td>X position</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td> |
| <td>Y position</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>w</code></em> :</span></p></td> |
| <td>width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>h</code></em> :</span></p></td> |
| <td>height</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-region-of-interest-meta-id"></a><h3>gst_buffer_add_video_region_of_interest_meta_id ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * gst_buffer_add_video_region_of_interest_meta_id |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> roi_type</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> x</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> y</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> w</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> h</code></em>);</pre> |
| <p> |
| Attaches <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> metadata to <em class="parameter"><code>buffer</code></em> with the given |
| parameters. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>roi_type</code></em> :</span></p></td> |
| <td>Type of the region of interest (e.g. "face")</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td> |
| <td>X position</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td> |
| <td>Y position</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>w</code></em> :</span></p></td> |
| <td>width</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>h</code></em> :</span></p></td> |
| <td>height</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-region-of-interest-meta"></a><h3>gst_buffer_get_video_region_of_interest_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_get_video_region_of_interest_meta(b)</pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-region-of-interest-meta-id"></a><h3>gst_buffer_get_video_region_of_interest_meta_id ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="returnvalue">GstVideoRegionOfInterestMeta</span></a> * gst_buffer_get_video_region_of_interest_meta_id |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> id</code></em>);</pre> |
| <p> |
| Find the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> on <em class="parameter"><code>buffer</code></em> with the given <em class="parameter"><code>id</code></em>. |
| </p> |
| <p> |
| Buffers can contain multiple <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoRegionOfInterestMeta" title="GstVideoRegionOfInterestMeta"><span class="type">GstVideoRegionOfInterestMeta</span></a> metadata items if |
| multiple regions of interests are marked on a frame. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>id</code></em> :</span></p></td> |
| <td>a metadata id</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <span class="type">GstVideoeRegionOfInterestMeta</span> with <em class="parameter"><code>id</code></em> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> when there is |
| no such metadata on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoGLTextureUpload"></a><h3>GstVideoGLTextureUpload ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> (*GstVideoGLTextureUpload) (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> texture_id[4]</code></em>);</pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstVideoGLTextureUploadMeta"></a><h3>struct GstVideoGLTextureUploadMeta</h3> |
| <pre class="programlisting">struct GstVideoGLTextureUploadMeta { |
| GstMeta meta; |
| |
| GstVideoGLTextureOrientation texture_orientation; |
| guint n_textures; |
| GstVideoGLTextureType texture_type[4]; |
| }; |
| </pre> |
| <p> |
| Extra buffer metadata for uploading a buffer to an OpenGL texture |
| ID. The caller of <a class="link" href="gst-plugins-base-libs-gstvideometa.html#gst-video-gl-texture-upload-meta-upload" title="gst_video_gl_texture_upload_meta_upload ()"><code class="function">gst_video_gl_texture_upload_meta_upload()</code></a> must |
| have OpenGL set up and call this from a thread where it is valid |
| to upload something to an OpenGL texture. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> <em class="structfield"><code><a name="GstVideoGLTextureUploadMeta.meta"></a>meta</code></em>;</span></p></td> |
| <td>parent <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html#GstMeta"><span class="type">GstMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="type">GstVideoGLTextureOrientation</span> <em class="structfield"><code><a name="GstVideoGLTextureUploadMeta.texture-orientation"></a>texture_orientation</code></em>;</span></p></td> |
| <td>Orientation of the textures</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstVideoGLTextureUploadMeta.n-textures"></a>n_textures</code></em>;</span></p></td> |
| <td>Number of textures that are generated</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="type">GstVideoGLTextureType</span> <em class="structfield"><code><a name="GstVideoGLTextureUploadMeta.texture-type"></a>texture_type</code></em>[4];</span></p></td> |
| <td>Type of each texture</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-add-video-gl-texture-upload-meta"></a><h3>gst_buffer_add_video_gl_texture_upload_meta ()</h3> |
| <pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="returnvalue">GstVideoGLTextureUploadMeta</span></a> * gst_buffer_add_video_gl_texture_upload_meta |
| (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> *buffer</code></em>, |
| <em class="parameter"><code><span class="type">GstVideoGLTextureOrientation</span> texture_orientation</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> n_textures</code></em>, |
| <em class="parameter"><code><span class="type">GstVideoGLTextureType</span> texture_type[4]</code></em>, |
| <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUpload" title="GstVideoGLTextureUpload ()"><span class="type">GstVideoGLTextureUpload</span></a> upload</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Boxed-Types.html#GBoxedCopyFunc"><span class="type">GBoxedCopyFunc</span></a> user_data_copy</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Boxed-Types.html#GBoxedFreeFunc"><span class="type">GBoxedFreeFunc</span></a> user_data_free</code></em>);</pre> |
| <p> |
| Attaches GstVideoGLTextureUploadMeta metadata to <em class="parameter"><code>buffer</code></em> with the given |
| parameters. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td> |
| <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstBuffer.html#GstBuffer"><span class="type">GstBuffer</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>upload</code></em> :</span></p></td> |
| <td>the function to upload the buffer to a specific texture ID</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data for the implementor of <em class="parameter"><code>upload</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data_copy</code></em> :</span></p></td> |
| <td>function to copy <em class="parameter"><code>user_data</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data_free</code></em> :</span></p></td> |
| <td>function to free <em class="parameter"><code>user_data</code></em> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td>the <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> on <em class="parameter"><code>buffer</code></em>.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-buffer-get-video-gl-texture-upload-meta"></a><h3>gst_buffer_get_video_gl_texture_upload_meta()</h3> |
| <pre class="programlisting">#define gst_buffer_get_video_gl_texture_upload_meta(b) ((GstVideoGLTextureUploadMeta*)gst_buffer_get_meta((b),GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE)) |
| </pre> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-video-gl-texture-upload-meta-upload"></a><h3>gst_video_gl_texture_upload_meta_upload ()</h3> |
| <pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_video_gl_texture_upload_meta_upload |
| (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> *meta</code></em>, |
| <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> texture_id[4]</code></em>);</pre> |
| <p> |
| Uploads the buffer which owns the meta to a specific texture ID. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>meta</code></em> :</span></p></td> |
| <td>a <a class="link" href="gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUploadMeta" title="struct GstVideoGLTextureUploadMeta"><span class="type">GstVideoGLTextureUploadMeta</span></a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>texture_id</code></em> :</span></p></td> |
| <td>the texture IDs to upload to</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if uploading succeeded, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
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