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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Bitmap: Cogl 2.0 Reference Manual</title>
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<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#cogl-2.0-experimental-Bitmap.description" class="shortcut">Description</a></span>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
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</tr></table>
<div class="refentry">
<a name="cogl-2.0-experimental-Bitmap"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cogl-2.0-experimental-Bitmap.top_of_page"></a>Bitmap</span></h2>
<p>Bitmap — Functions for loading images</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-is-bitmap" title="cogl_is_bitmap ()">cogl_is_bitmap</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-file" title="cogl_bitmap_new_from_file ()">cogl_bitmap_new_from_file</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-buffer" title="cogl_bitmap_new_from_buffer ()">cogl_bitmap_new_from_buffer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-with-size" title="cogl_bitmap_new_with_size ()">cogl_bitmap_new_with_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-for-data" title="cogl_bitmap_new_for_data ()">cogl_bitmap_new_for_data</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-format" title="cogl_bitmap_get_format ()">cogl_bitmap_get_format</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-width" title="cogl_bitmap_get_width ()">cogl_bitmap_get_width</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-height" title="cogl_bitmap_get_height ()">cogl_bitmap_get_height</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-rowstride" title="cogl_bitmap_get_rowstride ()">cogl_bitmap_get_rowstride</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="returnvalue">CoglPixelBuffer</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-buffer" title="cogl_bitmap_get_buffer ()">cogl_bitmap_get_buffer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-size-from-file" title="cogl_bitmap_get_size_from_file ()">cogl_bitmap_get_size_from_file</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-texture-new-from-bitmap" title="cogl_texture_new_from_bitmap ()">cogl_texture_new_from_bitmap</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap">CoglBitmap</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Bitmap.html#COGL-BITMAP-ERROR:CAPS" title="COGL_BITMAP_ERROR">COGL_BITMAP_ERROR</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmapError" title="enum CoglBitmapError">CoglBitmapError</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.description"></a><h2>Description</h2>
<p>Cogl allows loading image data into memory as CoglBitmaps without
loading them immediately into GPU textures.</p>
<p><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> is available since Cogl 1.0</p>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="cogl-is-bitmap"></a><h3>cogl_is_bitmap ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_is_bitmap (<em class="parameter"><code><span class="type">void</span> *object</code></em>);</pre>
<p>Checks whether <em class="parameter"><code>object</code></em>
 is a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p>
<div class="refsect3">
<a name="cogl-is-bitmap.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-The-Object-Interface.html#CoglObject" title="CoglObject"><span class="type">CoglObject</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-is-bitmap.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the passed <em class="parameter"><code>object</code></em>
represents a bitmap,
and <code class="literal">FALSE</code> otherwise</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.0">1.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-from-file"></a><h3>cogl_bitmap_new_from_file ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
cogl_bitmap_new_from_file (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
                           <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>Loads an image file from disk. This function can be safely called from
within a thread.</p>
<div class="refsect3">
<a name="cogl-bitmap-new-from-file.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>filename</p></td>
<td class="parameter_description"><p>the file to load.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> or <code class="literal">NULL</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-new-from-file.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> to the new loaded
image data, or <code class="literal">NULL</code> if loading the image failed. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.0">1.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-from-buffer"></a><h3>cogl_bitmap_new_from_buffer ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
cogl_bitmap_new_from_buffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> *buffer</code></em>,
                             <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
                             <em class="parameter"><code><span class="type">int</span> width</code></em>,
                             <em class="parameter"><code><span class="type">int</span> height</code></em>,
                             <em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
                             <em class="parameter"><code><span class="type">int</span> offset</code></em>);</pre>
<p>Wraps some image data that has been uploaded into a <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> as
a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. The data is not copied in this process.</p>
<div class="refsect3">
<a name="cogl-bitmap-new-from-buffer.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> containing image data</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>format</p></td>
<td class="parameter_description"><p>The <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> defining the format of the image data
in the given <em class="parameter"><code>buffer</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width of the image data in the given <em class="parameter"><code>buffer</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height of the image data in the given <em class="parameter"><code>buffer</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rowstride</p></td>
<td class="parameter_description"><p>The rowstride in bytes of the image data in the given <em class="parameter"><code>buffer</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offset</p></td>
<td class="parameter_description"><p>The offset into the given <em class="parameter"><code>buffer</code></em>
to the first pixel that
should be considered part of the <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-new-from-buffer.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> encapsulating the given <em class="parameter"><code>buffer</code></em>
. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.8</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-with-size"></a><h3>cogl_bitmap_new_with_size ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
cogl_bitmap_new_with_size (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
                           <em class="parameter"><code>unsigned <span class="type">int</span> width</code></em>,
                           <em class="parameter"><code>unsigned <span class="type">int</span> height</code></em>,
                           <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>);</pre>
<p>Creates a new <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> with the given width, height and format.
The initial contents of the bitmap are undefined.</p>
<p>The data for the bitmap will be stored in a newly created
<a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a>. You can get a pointer to the pixel buffer using
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-buffer" title="cogl_bitmap_get_buffer ()"><code class="function">cogl_bitmap_get_buffer()</code></a>. The <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> API can then be
used to fill the bitmap with data.</p>
<div class="note">Cogl will try its best to provide a hardware array you can
map, write into and effectively do a zero copy upload when creating
a texture from it with <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-texture-new-from-bitmap" title="cogl_texture_new_from_bitmap ()"><code class="function">cogl_texture_new_from_bitmap()</code></a>. For various
reasons, such arrays are likely to have a stride larger than width
* bytes_per_pixel. The user must take the stride into account when
writing into it. The stride can be retrieved with
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-rowstride" title="cogl_bitmap_get_rowstride ()"><code class="function">cogl_bitmap_get_rowstride()</code></a>.</div>
<div class="refsect3">
<a name="cogl-bitmap-new-with-size.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>width of the bitmap in pixels</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>height of the bitmap in pixels</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>format</p></td>
<td class="parameter_description"><p>the format of the pixels the array will store</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-new-with-size.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a> representing the
newly created array or <code class="literal">NULL</code> on failure. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-for-data"></a><h3>cogl_bitmap_new_for_data ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> *
cogl_bitmap_new_for_data (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
                          <em class="parameter"><code><span class="type">int</span> width</code></em>,
                          <em class="parameter"><code><span class="type">int</span> height</code></em>,
                          <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
                          <em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
                          <em class="parameter"><code><span class="type">uint8_t</span> *data</code></em>);</pre>
<p>Creates a bitmap using some existing data. The data is not copied
so the application must keep the buffer alive for the lifetime of
the <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. This can be used for example with
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels-into-bitmap" title="cogl_framebuffer_read_pixels_into_bitmap ()"><code class="function">cogl_framebuffer_read_pixels_into_bitmap()</code></a> to read data directly
into an application buffer with the specified rowstride.</p>
<div class="refsect3">
<a name="cogl-bitmap-new-for-data.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width of the bitmap.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height of the bitmap.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>format</p></td>
<td class="parameter_description"><p>The format of the pixel data.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rowstride</p></td>
<td class="parameter_description"><p>The rowstride of the bitmap (the number of bytes from
the start of one row of the bitmap to the next).</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>A pointer to the data. The bitmap will take ownership of this data.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-new-for-data.returns"></a><h4>Returns</h4>
<p> A new <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-format"></a><h3>cogl_bitmap_get_format ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a>
cogl_bitmap_get_format (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="refsect3">
<a name="cogl-bitmap-get-format.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-format.returns"></a><h4>Returns</h4>
<p> the <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> that the data for the bitmap is in.</p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-width"></a><h3>cogl_bitmap_get_width ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
cogl_bitmap_get_width (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="refsect3">
<a name="cogl-bitmap-get-width.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-width.returns"></a><h4>Returns</h4>
<p> the width of the bitmap</p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-height"></a><h3>cogl_bitmap_get_height ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
cogl_bitmap_get_height (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="refsect3">
<a name="cogl-bitmap-get-height.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-height.returns"></a><h4>Returns</h4>
<p> the height of the bitmap</p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-rowstride"></a><h3>cogl_bitmap_get_rowstride ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
cogl_bitmap_get_rowstride (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="refsect3">
<a name="cogl-bitmap-get-rowstride.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-rowstride.returns"></a><h4>Returns</h4>
<p> the rowstride of the bitmap. This is the number of
bytes between the address of start of one row to the address of the
next row in the image.</p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-buffer"></a><h3>cogl_bitmap_get_buffer ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="returnvalue">CoglPixelBuffer</span></a> *
cogl_bitmap_get_buffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="refsect3">
<a name="cogl-bitmap-get-buffer.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-buffer.returns"></a><h4>Returns</h4>
<p> the <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a> that this
buffer uses for storage. Note that if the bitmap was created with
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-file" title="cogl_bitmap_new_from_file ()"><code class="function">cogl_bitmap_new_from_file()</code></a> then it will not actually be using a
pixel buffer and this function will return <code class="literal">NULL</code>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-size-from-file"></a><h3>cogl_bitmap_get_size_from_file ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_bitmap_get_size_from_file (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
                                <em class="parameter"><code><span class="type">int</span> *width</code></em>,
                                <em class="parameter"><code><span class="type">int</span> *height</code></em>);</pre>
<p>Parses an image file enough to extract the width and height
of the bitmap.</p>
<div class="refsect3">
<a name="cogl-bitmap-get-size-from-file.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>filename</p></td>
<td class="parameter_description"><p>the file to check</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p> return location for the bitmap width, or <code class="literal">NULL</code>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p> return location for the bitmap height, or <code class="literal">NULL</code>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-bitmap-get-size-from-file.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the image was successfully parsed</p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.0">1.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-texture-new-from-bitmap"></a><h3>cogl_texture_new_from_bitmap ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> *
cogl_texture_new_from_bitmap (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>,
                              <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglTextureFlags" title="enum CoglTextureFlags"><span class="type">CoglTextureFlags</span></a> flags</code></em>,
                              <em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> internal_format</code></em>);</pre>
<div class="warning">
<p><code class="literal">cogl_texture_new_from_bitmap</code> has been deprecated since version 1.18 and should not be used in newly-written code.</p>
<p>Use specific constructors such as
                  <a class="link" href="cogl-2.0-experimental-2D-textures.html#cogl-texture-2d-new-from-bitmap" title="cogl_texture_2d_new_from_bitmap ()"><code class="function">cogl_texture_2d_new_from_bitmap()</code></a></p>
</div>
<p>Creates a <a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="type">CoglTexture</span></a> from a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>.</p>
<div class="refsect3">
<a name="cogl-texture-new-from-bitmap.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>bitmap</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>Optional flags for the texture, or <a class="link" href="cogl-2.0-experimental-Common-Types.html#COGL-TEXTURE-NONE:CAPS"><code class="literal">COGL_TEXTURE_NONE</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>internal_format</p></td>
<td class="parameter_description"><p>the <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> to use for the GPU storage of the
texture</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cogl-texture-new-from-bitmap.returns"></a><h4>Returns</h4>
<p> A newly created <a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="type">CoglTexture</span></a> or
<code class="literal">NULL</code> on failure. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix04.html#api-index-1.0">1.0</a></p>
</div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="CoglBitmap"></a><h3>CoglBitmap</h3>
<pre class="programlisting">typedef struct _CoglBitmap CoglBitmap;</pre>
</div>
<hr>
<div class="refsect2">
<a name="COGL-BITMAP-ERROR:CAPS"></a><h3>COGL_BITMAP_ERROR</h3>
<pre class="programlisting">#define COGL_BITMAP_ERROR (cogl_bitmap_error_quark ())
</pre>
<p><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> domain for bitmap errors.</p>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="CoglBitmapError"></a><h3>enum CoglBitmapError</h3>
<p>Error codes that can be thrown when performing bitmap
operations. Note that <code class="function">gdk_pixbuf_new_from_file()</code> can also throw
errors directly from the underlying image loading library. For
example, if GdkPixbuf is used then errors <span class="type">GdkPixbufError</span>s
will be used directly.</p>
<div class="refsect3">
<a name="CoglBitmapError.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-BITMAP-ERROR-FAILED:CAPS"></a>COGL_BITMAP_ERROR_FAILED</p></td>
<td class="enum_member_description">
<p>Generic failure code, something went
  wrong.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-BITMAP-ERROR-UNKNOWN-TYPE:CAPS"></a>COGL_BITMAP_ERROR_UNKNOWN_TYPE</p></td>
<td class="enum_member_description">
<p>Unknown image type.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-BITMAP-ERROR-CORRUPT-IMAGE:CAPS"></a>COGL_BITMAP_ERROR_CORRUPT_IMAGE</p></td>
<td class="enum_member_description">
<p>An image file was broken somehow.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.4">1.4</a></p>
</div>
</div>
</div>
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