1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>rawvideoparse: GStreamer Base Plugins 1.0 Plugins Reference Manual</title> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-base Elements"> 9<link rel="prev" href="gst-plugins-base-plugins-rawaudioparse.html" title="rawaudioparse"> 10<link rel="next" href="gst-plugins-base-plugins-socketsrc.html" title="socketsrc"> 11<meta name="generator" content="GTK-Doc V1.28 (XML mode)"> 12<link rel="stylesheet" href="style.css" type="text/css"> 13</head> 14<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 15<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> 16<td 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href="gst-plugins-base-plugins-socketsrc.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 26</tr></table> 27<div class="refentry"> 28<a name="gst-plugins-base-plugins-rawvideoparse"></a><div class="titlepage"></div> 29<div class="refnamediv"><table width="100%"><tr> 30<td valign="top"> 31<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-rawvideoparse.top_of_page"></a>rawvideoparse</span></h2> 32<p>rawvideoparse</p> 33</td> 34<td class="gallery_image" valign="top" align="right"></td> 35</tr></table></div> 36<div class="refsect1"> 37<a name="gst-plugins-base-plugins-rawvideoparse.properties"></a><h2>Properties</h2> 38<div class="informaltable"><table class="informaltable" border="0"> 39<colgroup> 40<col width="150px" class="properties_type"> 41<col width="300px" class="properties_name"> 42<col width="200px" class="properties_flags"> 43</colgroup> 44<tbody> 45<tr> 46<td class="property_type"> 47<a href="/usr/share/gtk-doc/html/gobject/gobject-Value-arrays.html#GValueArray-struct"><span class="type">GValueArray</span></a> *</td> 48<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--channel-positions" title="The “channel-positions” property">channel-positions</a></td> 49<td class="property_flags">Read / Write</td> 50</tr> 51<tr> 52<td class="property_type"><span class="type">GstRawAudioParseFormat</span></td> 53<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--format" title="The “format” property">format</a></td> 54<td class="property_flags">Read / Write</td> 55</tr> 56<tr> 57<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> 58<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--interleaved" title="The “interleaved” property">interleaved</a></td> 59<td class="property_flags">Read / Write</td> 60</tr> 61<tr> 62<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 63<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--num-channels" title="The “num-channels” property">num-channels</a></td> 64<td class="property_flags">Read / Write</td> 65</tr> 66<tr> 67<td class="property_type"><a href="../html/gst-plugins-base-libs-GstAudio.html#GstAudioFormat"><span class="type">GstAudioFormat</span></a></td> 68<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--pcm-format" title="The “pcm-format” property">pcm-format</a></td> 69<td class="property_flags">Read / Write</td> 70</tr> 71<tr> 72<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> 73<td class="property_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse--sample-rate" title="The “sample-rate” property">sample-rate</a></td> 74<td class="property_flags">Read / Write</td> 75</tr> 76</tbody> 77</table></div> 78</div> 79<a name="GstRawAudioParse"></a><div class="refsect1"> 80<a name="gst-plugins-base-plugins-rawvideoparse.other"></a><h2>Types and Values</h2> 81<div class="informaltable"><table class="informaltable" width="100%" border="0"> 82<colgroup> 83<col width="150px" class="name"> 84<col class="description"> 85</colgroup> 86<tbody><tr> 87<td class="datatype_keyword">struct</td> 88<td class="function_name"><a class="link" href="gst-plugins-base-plugins-rawaudioparse.html#GstRawAudioParse-struct" title="struct GstRawAudioParse">GstRawAudioParse</a></td> 89</tr></tbody> 90</table></div> 91</div> 92<div class="refsect1"> 93<a name="gst-plugins-base-plugins-rawvideoparse.object-hierarchy"></a><h2>Object Hierarchy</h2> 94<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 95 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 96 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 97 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 98 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseParse.html#GstBaseParse-struct">GstBaseParse</a> 99 <span class="lineart">╰──</span> GstRawBaseParse 100 <span class="lineart">╰──</span> GstRawAudioParse 101</pre> 102</div> 103<div class="refsect1"> 104<a name="gst-plugins-base-plugins-rawvideoparse.description"></a><h2>Description</h2> 105<p>This element parses incoming data as raw video frames and timestamps these. 106It also handles seek queries in said raw video data, and ensures that output 107buffers contain exactly one frame, even if the input buffers contain only 108partial frames or multiple frames. In the former case, it will continue to 109receive buffers until there is enough input data to output one frame. In the 110latter case, it will extract the first frame in the buffer and output it, then 111the second one etc. until the remaining unparsed bytes aren't enough to form 112a complete frame, and it will then continue as described in the earlier case.</p> 113<p>The element implements the properties and sink caps configuration as specified 114in the <span class="type">GstRawBaseParse</span> documentation. The properties configuration can be 115modified by using the width, height, pixel-aspect-ratio, framerate, interlaced, 116top-field-first, plane-strides, plane-offsets, and frame-size properties.</p> 117<p>If the properties configuration is used, plane strides and offsets will be 118computed by using <a href="../html/gst-plugins-base-libs-GstVideo.html#gst-video-info-set-format"><code class="function">gst_video_info_set_format()</code></a>. This can be overridden by passing 119GstValueArrays to the plane-offsets and plane-strides properties. When this is 120done, these custom offsets and strides are used later even if new width, 121height, format etc. property values might be set. To switch back to computed 122plane strides & offsets, pass NULL to one or both of the plane-offset and 123plane-array properties.</p> 124<p>The frame size property is useful in cases where there is extra data between 125the frames (for example, trailing metadata, or headers). The parser calculates 126the actual frame size out of the other properties and compares it with this 127frame-size value. If the frame size is larger than the calculated size, 128then the extra bytes after the end of the frame are skipped. For example, with 1298-bit grayscale frames and a actual frame size of 100x10 pixels and a frame-size of 1301500 bytes, there are 500 excess bytes at the end of the actual frame which 131are then skipped. It is safe to set the frame size to a value that is smaller 132than the actual frame size (in fact, its default value is 0); if it is smaller, 133then no trailing data will be skipped.</p> 134<p>If a framerate of 0 Hz is set (for example, 0/1), then output buffers will have 135no duration set. The first output buffer will have a PTS 0, all subsequent ones 136an unset PTS.</p> 137<div class="refsect3"> 138<a name="id-1.2.87.7.7"></a><h4>Example pipelines</h4> 139<div class="informalexample"> 140 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 141 <tbody> 142 <tr> 143 <td class="listing_lines" align="right"><pre>1 1442</pre></td> 145 <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> filesrc location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">.</span>raw <span class="gtkdoc opt">!</span> rawvideoparse use<span class="gtkdoc opt">-</span>sink<span class="gtkdoc opt">-</span>caps<span class="gtkdoc opt">=</span><span class="keyword">false</span> \ 146 width<span class="gtkdoc opt">=</span><span class="number">500</span> height<span class="gtkdoc opt">=</span><span class="number">400</span> format<span class="gtkdoc opt">=</span>y444 <span class="gtkdoc opt">!</span> autovideosink</pre></td> 147 </tr> 148 </tbody> 149 </table> 150</div> 151 152<p> 153 Read raw data from a local file and parse it as video data with 500x400 pixels 154and Y444 video format.</p> 155<div class="informalexample"> 156 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 157 <tbody> 158 <tr> 159 <td class="listing_lines" align="right"><pre>1 1602 1613</pre></td> 162 <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> filesrc location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">.</span>raw <span class="gtkdoc opt">!</span> queue <span class="gtkdoc opt">!</span> <span class="string">"video/x-raw, width=320, \</span> 163<span class="string"> height=240, format=I420, framerate=1/1"</span> <span class="gtkdoc opt">!</span> rawvideoparse \ 164 use<span class="gtkdoc opt">-</span>sink<span class="gtkdoc opt">-</span>caps<span class="gtkdoc opt">=</span><span class="keyword">true</span> <span class="gtkdoc opt">!</span> autovideosink</pre></td> 165 </tr> 166 </tbody> 167 </table> 168</div> 169 170<p> 171 Read raw data from a local file and parse it as video data with 320x240 pixels 172and I420 video format. The queue element here is to force push based scheduling. 173See the documentation in <span class="type">GstRawBaseParse</span> for the reason why.</p> 174</div> 175<div class="refsynopsisdiv"> 176<h2>Synopsis</h2> 177<div class="refsect2"> 178<a name="id-1.2.87.7.8.1"></a><h3>Element Information</h3> 179<div class="variablelist"><table border="0" class="variablelist"> 180<colgroup> 181<col align="left" valign="top"> 182<col> 183</colgroup> 184<tbody> 185<tr> 186<td><p><span class="term">plugin</span></p></td> 187<td> 188 <a class="link" href="gst-plugins-base-plugins-plugin-rawparse.html#plugin-rawparse">rawparse</a> 189 </td> 190</tr> 191<tr> 192<td><p><span class="term">author</span></p></td> 193<td>Carlos Rafael Giani <dv@pseudoterminal.org></td> 194</tr> 195<tr> 196<td><p><span class="term">class</span></p></td> 197<td>Codec/Parser/Video</td> 198</tr> 199</tbody> 200</table></div> 201</div> 202<hr> 203<div class="refsect2"> 204<a name="id-1.2.87.7.8.2"></a><h3>Element Pads</h3> 205<div class="variablelist"><table border="0" class="variablelist"> 206<colgroup> 207<col align="left" valign="top"> 208<col> 209</colgroup> 210<tbody> 211<tr> 212<td><p><span class="term">name</span></p></td> 213<td>sink</td> 214</tr> 215<tr> 216<td><p><span class="term">direction</span></p></td> 217<td>sink</td> 218</tr> 219<tr> 220<td><p><span class="term">presence</span></p></td> 221<td>always</td> 222</tr> 223<tr> 224<td><p><span class="term">details</span></p></td> 225<td>video/x-unaligned-raw, format=(string){ I420, YV12, YUY2, UYVY, AYUV, VUYA, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, Y210, Y410, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, BGR10A2_LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 226</tr> 227<tr> 228<td><p><span class="term"></span></p></td> 229<td> video/x-raw, format=(string){ I420, YV12, YUY2, UYVY, AYUV, VUYA, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, Y210, Y410, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, BGR10A2_LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 230</tr> 231</tbody> 232</table></div> 233<div class="variablelist"><table border="0" class="variablelist"> 234<colgroup> 235<col align="left" valign="top"> 236<col> 237</colgroup> 238<tbody> 239<tr> 240<td><p><span class="term">name</span></p></td> 241<td>src</td> 242</tr> 243<tr> 244<td><p><span class="term">direction</span></p></td> 245<td>source</td> 246</tr> 247<tr> 248<td><p><span class="term">presence</span></p></td> 249<td>always</td> 250</tr> 251<tr> 252<td><p><span class="term">details</span></p></td> 253<td>video/x-raw, format=(string){ I420, YV12, YUY2, UYVY, AYUV, VUYA, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, Y210, Y410, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10BE, I420_10LE, I422_10BE, I422_10LE, Y444_10BE, Y444_10LE, GBR, GBR_10BE, GBR_10LE, NV16, NV24, NV12_64Z32, A420_10BE, A420_10LE, A422_10BE, A422_10LE, A444_10BE, A444_10LE, NV61, P010_10BE, P010_10LE, IYU2, VYUY, GBRA, GBRA_10BE, GBRA_10LE, BGR10A2_LE, GBR_12BE, GBR_12LE, GBRA_12BE, GBRA_12LE, I420_12BE, I420_12LE, I422_12BE, I422_12LE, Y444_12BE, Y444_12LE, GRAY10_LE32, NV12_10LE32, NV16_10LE32, NV12_10LE40 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td> 254</tr> 255</tbody> 256</table></div> 257</div> 258</div> 259</div> 260<div class="refsect1"> 261<a name="gst-plugins-base-plugins-rawvideoparse.functions_details"></a><h2>Functions</h2> 262<p></p> 263</div> 264<div class="refsect1"> 265<a name="gst-plugins-base-plugins-rawvideoparse.other_details"></a><h2>Types and Values</h2> 266<div class="refsect2"> 267<a name="GstRawAudioParse-struct"></a><h3>struct GstRawAudioParse</h3> 268<pre class="programlisting">struct GstRawAudioParse;</pre> 269</div> 270</div> 271<div class="refsect1"> 272<a name="gst-plugins-base-plugins-rawvideoparse.property-details"></a><h2>Property Details</h2> 273<div class="refsect2"> 274<a name="GstRawAudioParse--channel-positions"></a><h3>The <code class="literal">“channel-positions”</code> property</h3> 275<pre class="programlisting"> “channel-positions” <a href="/usr/share/gtk-doc/html/gobject/gobject-Value-arrays.html#GValueArray-struct"><span class="type">GValueArray</span></a> *</pre> 276<p>Channel positions used on the output.</p> 277<p>Flags: Read / Write</p> 278</div> 279<hr> 280<div class="refsect2"> 281<a name="GstRawAudioParse--format"></a><h3>The <code class="literal">“format”</code> property</h3> 282<pre class="programlisting"> “format” <span class="type">GstRawAudioParseFormat</span></pre> 283<p>Format of the raw audio stream.</p> 284<p>Flags: Read / Write</p> 285<p>Default value: PCM</p> 286</div> 287<hr> 288<div class="refsect2"> 289<a name="GstRawAudioParse--interleaved"></a><h3>The <code class="literal">“interleaved”</code> property</h3> 290<pre class="programlisting"> “interleaved” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> 291<p>True if audio has interleaved layout.</p> 292<p>Flags: Read / Write</p> 293<p>Default value: TRUE</p> 294</div> 295<hr> 296<div class="refsect2"> 297<a name="GstRawAudioParse--num-channels"></a><h3>The <code class="literal">“num-channels”</code> property</h3> 298<pre class="programlisting"> “num-channels” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 299<p>Number of channels in raw stream.</p> 300<p>Flags: Read / Write</p> 301<p>Allowed values: >= 1</p> 302<p>Default value: 2</p> 303</div> 304<hr> 305<div class="refsect2"> 306<a name="GstRawAudioParse--pcm-format"></a><h3>The <code class="literal">“pcm-format”</code> property</h3> 307<pre class="programlisting"> “pcm-format” <a href="../html/gst-plugins-base-libs-GstAudio.html#GstAudioFormat"><span class="type">GstAudioFormat</span></a></pre> 308<p>Format of audio samples in PCM stream (ignored if format property is not set to pcm).</p> 309<p>Flags: Read / Write</p> 310<p>Default value: GST_AUDIO_FORMAT_UNKNOWN</p> 311</div> 312<hr> 313<div class="refsect2"> 314<a name="GstRawAudioParse--sample-rate"></a><h3>The <code class="literal">“sample-rate”</code> property</h3> 315<pre class="programlisting"> “sample-rate” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> 316<p>Rate of audio samples in raw stream.</p> 317<p>Flags: Read / Write</p> 318<p>Allowed values: >= 1</p> 319<p>Default value: 44100</p> 320</div> 321</div> 322</div> 323<div class="footer"> 324<hr>Generated by GTK-Doc V1.28</div> 325</body> 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