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<h2><span class="refentrytitle"><a name="libucil-ucil.top_of_page"></a>ucil</span></h2>
<p>ucil</p>
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<div class="refsynopsisdiv">
<a name="libucil-ucil.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">#define <a class="link" href="libucil-ucil.html#UCIL-FOURCC:CAPS" title="UCIL_FOURCC()">UCIL_FOURCC</a> (a,
b,
c,
d)
typedef <a class="link" href="libucil-ucil.html#ucil-rgb24-t" title="ucil_rgb24_t">ucil_rgb24_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-rgb32-t" title="ucil_rgb32_t">ucil_rgb32_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-yuv-t" title="ucil_yuv_t">ucil_yuv_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-y8-t" title="ucil_y8_t">ucil_y8_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t">ucil_color_t</a>;
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-convolution-mask" title="ucil_convolution_mask ()">ucil_convolution_mask</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *src</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-convolution-mask-t" title="ucil_convolution_mask_t"><span class="type">ucil_convolution_mask_t</span></a> *mask</code></em>);
typedef <a class="link" href="libucil-ucil.html#ucil-convolution-mask-t" title="ucil_convolution_mask_t">ucil_convolution_mask_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t">ucil_font_object_t</a>;
typedef <a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t">ucil_video_file_object_t</a>;
<span class="returnvalue">unicap_status_t</span> <a class="link" href="libucil-ucil.html#ucil-check-version" title="ucil_check_version ()">ucil_check_version</a> (<em class="parameter"><code>unsigned <span class="type">int</span> major</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> minor</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> micro</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-set-pixel" title="ucil_set_pixel ()">ucil_set_pixel</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-set-pixel-alpha" title="ucil_set_pixel_alpha ()">ucil_set_pixel_alpha</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> alpha</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-draw-line" title="ucil_draw_line ()">ucil_draw_line</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-draw-rect" title="ucil_draw_rect ()">ucil_draw_rect</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-fill" title="ucil_fill ()">ucil_fill</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-draw-box" title="ucil_draw_box ()">ucil_draw_box</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-draw-circle" title="ucil_draw_circle ()">ucil_draw_circle</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> cx</code></em>,
<em class="parameter"><code><span class="type">int</span> cy</code></em>,
<em class="parameter"><code><span class="type">int</span> r</code></em>);
<a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="returnvalue">ucil_font_object_t</span></a> * <a class="link" href="libucil-ucil.html#ucil-create-font-object" title="ucil_create_font_object ()">ucil_create_font_object</a> (<em class="parameter"><code><span class="type">int</span> size</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *font</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-draw-text" title="ucil_draw_text ()">ucil_draw_text</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-destroy-font-object" title="ucil_destroy_font_object ()">ucil_destroy_font_object</a> (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-text-get-size" title="ucil_text_get_size ()">ucil_text_get_size</a> (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</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>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-get-pixel" title="ucil_get_pixel ()">ucil_get_pixel</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-draw.html#ucil-convert-color" title="ucil_convert_color ()">ucil_convert_color</a> (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *src</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *dest</code></em>);
<span class="returnvalue">unicap_status_t</span> <a class="link" href="libucil-ucil.html#ucil-convert-buffer" title="ucil_convert_buffer ()">ucil_convert_buffer</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *src</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libucil-ucil.html#ucil-conversion-supported" title="ucil_conversion_supported ()">ucil_conversion_supported</a> (<em class="parameter"><code>unsigned <span class="type">int</span> dest_fourcc</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> src_fourcc</code></em>);
<span class="returnvalue">ucil_colorspace_t</span> <a class="link" href="libucil-ucil.html#ucil-get-colorspace-from-fourcc" title="ucil_get_colorspace_from_fourcc ()">ucil_get_colorspace_from_fourcc</a> (<em class="parameter"><code>unsigned <span class="type">int</span> fourcc</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libucil-ucil.html#ucil-blend-alpha" title="ucil_blend_alpha ()">ucil_blend_alpha</a> (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *bg</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *fg</code></em>,
<em class="parameter"><code><span class="type">int</span> alpha</code></em>);
<a class="link" href="libucil-ucil.html#ucil-convolution-mask-t" title="ucil_convolution_mask_t"><span class="returnvalue">ucil_convolution_mask_t</span></a> * <a class="link" href="libucil-ucil.html#ucil-create-convolution-mask" title="ucil_create_convolution_mask ()">ucil_create_convolution_mask</a> (<em class="parameter"><code>unsigned <span class="type">char</span> *array</code></em>,
<em class="parameter"><code><span class="type">int</span> size</code></em>,
<em class="parameter"><code><span class="type">ucil_colorspace_t</span> cs</code></em>,
<em class="parameter"><code><span class="type">int</span> mode</code></em>);
<a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="returnvalue">ucil_video_file_object_t</span></a> * <a class="link" href="libucil-ucil.html#ucil-create-video-file" title="ucil_create_video_file ()">ucil_create_video_file</a> (<em class="parameter"><code>const <span class="type">char</span> *path</code></em>,
<em class="parameter"><code><span class="type">unicap_format_t</span> *format</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *codec</code></em>,
<em class="parameter"><code>...</code></em>);
<span class="returnvalue">unicap_status_t</span> <a class="link" href="libucil-ucil.html#ucil-encode-frame" title="ucil_encode_frame ()">ucil_encode_frame</a> (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="type">ucil_video_file_object_t</span></a> *vobj</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *buffer</code></em>);
<span class="returnvalue">unicap_status_t</span> <a class="link" href="libucil-ucil.html#ucil-close-video-file" title="ucil_close_video_file ()">ucil_close_video_file</a> (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="type">ucil_video_file_object_t</span></a> *vobj</code></em>);
<span class="returnvalue">unicap_status_t</span> <a class="link" href="libucil-ucil.html#ucil-open-video-file" title="ucil_open_video_file ()">ucil_open_video_file</a> (<em class="parameter"><code><span class="type">unicap_handle_t</span> *unicap_handle</code></em>,
<em class="parameter"><code><span class="type">char</span> *filename</code></em>);
const <span class="returnvalue">char</span> * <a class="link" href="libucil-ucil.html#ucil-get-video-file-extension" title="ucil_get_video_file_extension ()">ucil_get_video_file_extension</a> (<em class="parameter"><code>const <span class="type">char</span> *codec</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libucil-ucil.description"></a><h2>Description</h2>
<p>
</p>
</div>
<div class="refsect1">
<a name="libucil-ucil.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="UCIL-FOURCC:CAPS"></a><h3>UCIL_FOURCC()</h3>
<pre class="programlisting">#define UCIL_FOURCC(a,b,c,d) (unsigned int)((((unsigned int)d)<<24)+(((unsigned int)c)<<16)+(((unsigned int)b)<<8)+a)
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-rgb24-t"></a><h3>ucil_rgb24_t</h3>
<pre class="programlisting">typedef struct ucil_rgb24_t ucil_rgb24_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-rgb32-t"></a><h3>ucil_rgb32_t</h3>
<pre class="programlisting">typedef struct ucil_rgb32_t ucil_rgb32_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-yuv-t"></a><h3>ucil_yuv_t</h3>
<pre class="programlisting">typedef struct ucil_yuv_t ucil_yuv_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-y8-t"></a><h3>ucil_y8_t</h3>
<pre class="programlisting">typedef struct ucil_y8_t ucil_y8_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-color-t"></a><h3>ucil_color_t</h3>
<pre class="programlisting">typedef struct ucil_color_t ucil_color_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-convolution-mask"></a><h3>ucil_convolution_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_convolution_mask (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *src</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-convolution-mask-t" title="ucil_convolution_mask_t"><span class="type">ucil_convolution_mask_t</span></a> *mask</code></em>);</pre>
<p>
Apply a convolution mask
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td>
<td>target buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td>
<td>source buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mask</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-convolution-mask" title="ucil_convolution_mask ()"><span class="type">ucil_convolution_mask</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-convolution-mask-t"></a><h3>ucil_convolution_mask_t</h3>
<pre class="programlisting">typedef struct ucil_convolution_mask_t ucil_convolution_mask_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-font-object-t"></a><h3>ucil_font_object_t</h3>
<pre class="programlisting">typedef struct ucil_font_object_t ucil_font_object_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-video-file-object-t"></a><h3>ucil_video_file_object_t</h3>
<pre class="programlisting">typedef struct ucil_video_file_object_t ucil_video_file_object_t;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-check-version"></a><h3>ucil_check_version ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_status_t</span> ucil_check_version (<em class="parameter"><code>unsigned <span class="type">int</span> major</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> minor</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> micro</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-set-pixel"></a><h3>ucil_set_pixel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_set_pixel (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);</pre>
<p>
Draws a pixel on the data buffer.
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-set-pixel-alpha"></a><h3>ucil_set_pixel_alpha ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_set_pixel_alpha (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> alpha</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);</pre>
<p>
Draws a pixel on the data buffer, applying an alpha ( transparency
) value to the pixel.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>data_buffer</code></em> :</span></p></td>
<td>target buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a>. The colorspace of the color has to match
the colorspace of the data_buffer.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>alpha</code></em> :</span></p></td>
<td>the alpha value that should be applied to this pixel</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>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-draw-line"></a><h3>ucil_draw_line ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_draw_line (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);</pre>
<p>
Draws a line on the data buffer. The endpoints are clipped to the
buffer dimensions
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-draw-rect"></a><h3>ucil_draw_rect ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_draw_rect (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);</pre>
<p>
Draws a rectangle filled with color.
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-fill"></a><h3>ucil_fill ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_fill (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>);</pre>
<p>
Fill the buffer with a color.
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-draw-box"></a><h3>ucil_draw_box ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_draw_box (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x1</code></em>,
<em class="parameter"><code><span class="type">int</span> y1</code></em>,
<em class="parameter"><code><span class="type">int</span> x2</code></em>,
<em class="parameter"><code><span class="type">int</span> y2</code></em>);</pre>
<p>
Draws a box
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-draw-circle"></a><h3>ucil_draw_circle ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_draw_circle (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> cx</code></em>,
<em class="parameter"><code><span class="type">int</span> cy</code></em>,
<em class="parameter"><code><span class="type">int</span> r</code></em>);</pre>
<p>
Draws a circle.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a>. The colorspace of the color has to match
the colorspace of the data_buffer.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cx</code></em> :</span></p></td>
<td>center of the circle ( x position )</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cy</code></em> :</span></p></td>
<td>center of the circle ( y position )</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>r</code></em> :</span></p></td>
<td>radius</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-create-font-object"></a><h3>ucil_create_font_object ()</h3>
<pre class="programlisting"><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="returnvalue">ucil_font_object_t</span></a> * ucil_create_font_object (<em class="parameter"><code><span class="type">int</span> size</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *font</code></em>);</pre>
<p>
Creates a font object required for text operations. The application
must free the font object with <a class="link" href="libucil-ucil.html#ucil-destroy-font-object" title="ucil_destroy_font_object ()"><span class="type">ucil_destroy_font_object</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td>
<td>size of font in points</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>font</code></em> :</span></p></td>
<td>name of font or NULL to use default font</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-draw-text"></a><h3>ucil_draw_text ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_draw_text (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);</pre>
<p>
Draws a text string onto the target buffer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td>
<td>target buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a>. The colorspace of the color has to match
the colorspace of the data_buffer.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>fobj</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>text string to draw</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>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-destroy-font-object"></a><h3>ucil_destroy_font_object ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_destroy_font_object (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>);</pre>
<p>
Frees all resources allocated by the font object
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-text-get-size"></a><h3>ucil_text_get_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_text_get_size (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a> *fobj</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</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>
Determines the size in pixels a text string will take up when drawn
onto a buffer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>fobj</code></em> :</span></p></td>
<td>an <a class="link" href="libucil-ucil.html#ucil-font-object-t" title="ucil_font_object_t"><span class="type">ucil_font_object_t</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>text string</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>pointer to int which will receive the width of the text</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>pointer to int which will receive the height of the text</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-get-pixel"></a><h3>ucil_get_pixel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_get_pixel (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *data_buffer</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *color</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>);</pre>
<p>
Reads the pixel at position (x,y) and stores the result in <em class="structfield"><code>color</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>data_buffer</code></em> :</span></p></td>
<td>buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
<td>pointer to an <a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> to store the result</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>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-convert-color"></a><h3>ucil_convert_color ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_convert_color (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *src</code></em>,
<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-color-t" title="ucil_color_t"><span class="type">ucil_color_t</span></a> *dest</code></em>);</pre>
<p>
Convert colors between colorspaces. The
<em class="structfield"><code>colorspace</code></em> field of
<span class="structname">dest</span> needs to be set to the target
colorspace, like in this example:
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
src.colorspace = UCIL_COLORSPACE_RGB24;
src.rgb24.r = 0xff;
src.rgb24.g = 0xff;
src.rgb24.b = 0xff;
dest.colorspace = UCIL_COLORSPACE_YUV;
ucil_convert_color( &dest, &src );
</pre></div>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-convert-buffer"></a><h3>ucil_convert_buffer ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_status_t</span> ucil_convert_buffer (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *src</code></em>);</pre>
<p>
Convert the colorspace of a data buffer. The colorspaces are
denoted by the <em class="structfield"><code>buffer.format.fourcc</code></em>
field. The dest->format.fourcc gets set to the correct value.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td>
<td>target buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td>
<td>source buffer</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>STATUS_SUCCESS if the buffer could be converted
successfully. STATUS_FAILURE if no conversion exists.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-conversion-supported"></a><h3>ucil_conversion_supported ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> ucil_conversion_supported (<em class="parameter"><code>unsigned <span class="type">int</span> dest_fourcc</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> src_fourcc</code></em>);</pre>
<p>
Tests whether a specific conversion is supported.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest_fourcc</code></em> :</span></p></td>
<td>target fourcc</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>src_fourcc</code></em> :</span></p></td>
<td>source fourcc</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>1 when the conversion is supported</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-get-colorspace-from-fourcc"></a><h3>ucil_get_colorspace_from_fourcc ()</h3>
<pre class="programlisting"><span class="returnvalue">ucil_colorspace_t</span> ucil_get_colorspace_from_fourcc (<em class="parameter"><code>unsigned <span class="type">int</span> fourcc</code></em>);</pre>
<p>
Gets the <span class="type">ucil_colorspace_t</span> that matches the fourcc.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>fourcc</code></em> :</span></p></td>
<td>fourcc</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>an <span class="type">ucil_colorspace_t</span>. This is UCIL_COLORSPACE_UNKNOWN
when no conversion exists.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-blend-alpha"></a><h3>ucil_blend_alpha ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ucil_blend_alpha (<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *dest</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *bg</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *fg</code></em>,
<em class="parameter"><code><span class="type">int</span> alpha</code></em>);</pre>
<p>
Blends two buffers into a target buffer. Colorspaces of buffers
should match.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td>
<td>target buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bg</code></em> :</span></p></td>
<td>background buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>fg</code></em> :</span></p></td>
<td>foreground buffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>alpha</code></em> :</span></p></td>
<td>transparency value</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-create-convolution-mask"></a><h3>ucil_create_convolution_mask ()</h3>
<pre class="programlisting"><a class="link" href="libucil-ucil.html#ucil-convolution-mask-t" title="ucil_convolution_mask_t"><span class="returnvalue">ucil_convolution_mask_t</span></a> * ucil_create_convolution_mask (<em class="parameter"><code>unsigned <span class="type">char</span> *array</code></em>,
<em class="parameter"><code><span class="type">int</span> size</code></em>,
<em class="parameter"><code><span class="type">ucil_colorspace_t</span> cs</code></em>,
<em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="ucil-create-video-file"></a><h3>ucil_create_video_file ()</h3>
<pre class="programlisting"><a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="returnvalue">ucil_video_file_object_t</span></a> * ucil_create_video_file (<em class="parameter"><code>const <span class="type">char</span> *path</code></em>,
<em class="parameter"><code><span class="type">unicap_format_t</span> *format</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *codec</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>
Creates a video file to be used for video recording. After
creation, add frames to the video file with <a class="link" href="libucil-ucil.html#ucil-encode-frame" title="ucil_encode_frame ()"><span class="type">ucil_encode_frame</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em> :</span></p></td>
<td>filename with full path</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>image format of individual frames</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>codec</code></em> :</span></p></td>
<td>codec name or NULL to use default codec</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A new <a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="type">ucil_video_file_object_t</span></a> or NULL on error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-encode-frame"></a><h3>ucil_encode_frame ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_status_t</span> ucil_encode_frame (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="type">ucil_video_file_object_t</span></a> *vobj</code></em>,
<em class="parameter"><code><span class="type">unicap_data_buffer_t</span> *buffer</code></em>);</pre>
<p>
Adds a frame to a video file.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>vobj</code></em> :</span></p></td>
<td>a video file object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>data buffer</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>STATUS_SUCCESS if the frame got added successfully.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-close-video-file"></a><h3>ucil_close_video_file ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_status_t</span> ucil_close_video_file (<em class="parameter"><code><a class="link" href="libucil-ucil.html#ucil-video-file-object-t" title="ucil_video_file_object_t"><span class="type">ucil_video_file_object_t</span></a> *vobj</code></em>);</pre>
<p>
Close a video file created with <a class="link" href="libucil-ucil.html#ucil-create-video-file" title="ucil_create_video_file ()"><span class="type">ucil_create_video_file</span></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>vobj</code></em> :</span></p></td>
<td>an <span class="type">ucil_video_file_object</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-open-video-file"></a><h3>ucil_open_video_file ()</h3>
<pre class="programlisting"><span class="returnvalue">unicap_status_t</span> ucil_open_video_file (<em class="parameter"><code><span class="type">unicap_handle_t</span> *unicap_handle</code></em>,
<em class="parameter"><code><span class="type">char</span> *filename</code></em>);</pre>
<p>
Opens a video file for playback. The resulting handle can be used
like a video capture device.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>unicap_handle</code></em> :</span></p></td>
<td>pointer to an <span class="type">unicap_handle_t</span> where the new handle
gets stored.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>full path of the video file</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ucil-get-video-file-extension"></a><h3>ucil_get_video_file_extension ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> * ucil_get_video_file_extension (<em class="parameter"><code>const <span class="type">char</span> *codec</code></em>);</pre>
<p>
Get the file extension of a codec. Eg. for the "ogg/theora" codec,
this will return "ogg". The returned string is owned by ucil and
should not be freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>codec</code></em> :</span></p></td>
<td>codec name</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>string</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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