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<html><!-- Created using the cpp_pretty_printer from the dlib C++ library. See http://dlib.net for updates. --><head><title>dlib C++ Library - jpeg_loader.h</title></head><body bgcolor='white'><pre>
<font color='#009900'>// Copyright (C) 2010 Davis E. King (davis@dlib.net), Nils Labugt
</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license.
</font><font color='#0000FF'>#ifndef</font> DLIB_JPEG_IMPORT
<font color='#0000FF'>#define</font> DLIB_JPEG_IMPORT
<font color='#0000FF'>#include</font> <font color='#5555FF'>&lt;</font>vector<font color='#5555FF'>&gt;</font>
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='jpeg_loader_abstract.h.html'>jpeg_loader_abstract.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='image_loader.h.html'>image_loader.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../pixel.h.html'>../pixel.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../dir_nav.h.html'>../dir_nav.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../test_for_odr_violations.h.html'>../test_for_odr_violations.h</a>"
<font color='#0000FF'>namespace</font> dlib
<b>{</b>
<font color='#0000FF'>class</font> <b><a name='jpeg_loader'></a>jpeg_loader</b> : noncopyable
<b>{</b>
<font color='#0000FF'>public</font>:
<b><a name='jpeg_loader'></a>jpeg_loader</b><font face='Lucida Console'>(</font> <font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> filename <font face='Lucida Console'>)</font>;
<b><a name='jpeg_loader'></a>jpeg_loader</b><font face='Lucida Console'>(</font> <font color='#0000FF'>const</font> std::string<font color='#5555FF'>&amp;</font> filename <font face='Lucida Console'>)</font>;
<b><a name='jpeg_loader'></a>jpeg_loader</b><font face='Lucida Console'>(</font> <font color='#0000FF'>const</font> dlib::file<font color='#5555FF'>&amp;</font> f <font face='Lucida Console'>)</font>;
<b><a name='jpeg_loader'></a>jpeg_loader</b><font face='Lucida Console'>(</font> <font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> imgbuffer, <font color='#0000FF'><u>size_t</u></font> buffersize <font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='is_gray'></a>is_gray</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='is_rgb'></a>is_rgb</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='is_rgba'></a>is_rgba</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'>template</font><font color='#5555FF'>&lt;</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>&gt;</font>
<font color='#0000FF'><u>void</u></font> <b><a name='get_image'></a>get_image</b><font face='Lucida Console'>(</font> T<font color='#5555FF'>&amp;</font> t_<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>#ifndef</font> DLIB_JPEG_SUPPORT
<font color='#009900'>/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You are getting this error because you are trying to use the jpeg_loader
object but you haven't defined DLIB_JPEG_SUPPORT. You must do so to use
this object. You must also make sure you set your build environment
to link against the libjpeg library.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/</font>
<font color='#BB00BB'>COMPILE_TIME_ASSERT</font><font face='Lucida Console'>(</font><font color='#0000FF'>sizeof</font><font face='Lucida Console'>(</font>T<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>;
<font color='#0000FF'>#endif</font>
image_view<font color='#5555FF'>&lt;</font>T<font color='#5555FF'>&gt;</font> <font color='#BB00BB'>t</font><font face='Lucida Console'>(</font>t_<font face='Lucida Console'>)</font>;
t.<font color='#BB00BB'>set_size</font><font face='Lucida Console'>(</font> height_, width_ <font face='Lucida Console'>)</font>;
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font> <font color='#0000FF'><u>unsigned</u></font> n <font color='#5555FF'>=</font> <font color='#979000'>0</font>; n <font color='#5555FF'>&lt;</font> height_;n<font color='#5555FF'>+</font><font color='#5555FF'>+</font> <font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> v <font color='#5555FF'>=</font> <font color='#BB00BB'>get_row</font><font face='Lucida Console'>(</font> n <font face='Lucida Console'>)</font>;
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font> <font color='#0000FF'><u>unsigned</u></font> m <font color='#5555FF'>=</font> <font color='#979000'>0</font>; m <font color='#5555FF'>&lt;</font> width_;m<font color='#5555FF'>+</font><font color='#5555FF'>+</font> <font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font> <font color='#BB00BB'>is_gray</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font> p <font color='#5555FF'>=</font> v[m];
<font color='#BB00BB'>assign_pixel</font><font face='Lucida Console'>(</font> t[n][m], p <font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font> <font color='#BB00BB'>is_rgba</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>)</font> <b>{</b>
rgb_alpha_pixel p;
p.red <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>4</font>];
p.green <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>4</font><font color='#5555FF'>+</font><font color='#979000'>1</font>];
p.blue <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>4</font><font color='#5555FF'>+</font><font color='#979000'>2</font>];
p.alpha <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>4</font><font color='#5555FF'>+</font><font color='#979000'>3</font>];
<font color='#BB00BB'>assign_pixel</font><font face='Lucida Console'>(</font> t[n][m], p <font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#0000FF'>else</font> <font color='#009900'>// if ( is_rgb() )
</font> <b>{</b>
rgb_pixel p;
p.red <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>3</font>];
p.green <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>3</font><font color='#5555FF'>+</font><font color='#979000'>1</font>];
p.blue <font color='#5555FF'>=</font> v[m<font color='#5555FF'>*</font><font color='#979000'>3</font><font color='#5555FF'>+</font><font color='#979000'>2</font>];
<font color='#BB00BB'>assign_pixel</font><font face='Lucida Console'>(</font> t[n][m], p <font face='Lucida Console'>)</font>;
<b>}</b>
<b>}</b>
<b>}</b>
<b>}</b>
<font color='#0000FF'>private</font>:
<font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> <b><a name='get_row'></a>get_row</b><font face='Lucida Console'>(</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> i <font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>return</font> <font color='#5555FF'>&amp;</font>data[i<font color='#5555FF'>*</font>width_<font color='#5555FF'>*</font>output_components_];
<b>}</b>
FILE <font color='#5555FF'>*</font> <b><a name='check_file'></a>check_file</b><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> filename <font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>void</u></font> <b><a name='read_image'></a>read_image</b><font face='Lucida Console'>(</font> FILE <font color='#5555FF'>*</font>file, <font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> imgbuffer, <font color='#0000FF'><u>size_t</u></font> imgbuffersize <font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> height_;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> width_;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> output_components_;
std::vector<font color='#5555FF'>&lt;</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>&gt;</font> data;
<b>}</b>;
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'>&lt;</font>
<font color='#0000FF'>typename</font> image_type
<font color='#5555FF'>&gt;</font>
<font color='#0000FF'><u>void</u></font> <b><a name='load_jpeg'></a>load_jpeg</b> <font face='Lucida Console'>(</font>
image_type<font color='#5555FF'>&amp;</font> image,
<font color='#0000FF'>const</font> std::string<font color='#5555FF'>&amp;</font> file_name
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>jpeg_loader</font><font face='Lucida Console'>(</font>file_name<font face='Lucida Console'>)</font>.<font color='#BB00BB'>get_image</font><font face='Lucida Console'>(</font>image<font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#0000FF'>template</font> <font color='#5555FF'>&lt;</font>
<font color='#0000FF'>typename</font> image_type
<font color='#5555FF'>&gt;</font>
<font color='#0000FF'><u>void</u></font> <b><a name='load_jpeg'></a>load_jpeg</b> <font face='Lucida Console'>(</font>
image_type<font color='#5555FF'>&amp;</font> image,
<font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> imgbuff,
<font color='#0000FF'><u>size_t</u></font> imgbuffsize
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>jpeg_loader</font><font face='Lucida Console'>(</font>imgbuff, imgbuffsize<font face='Lucida Console'>)</font>.<font color='#BB00BB'>get_image</font><font face='Lucida Console'>(</font>image<font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#0000FF'>template</font> <font color='#5555FF'>&lt;</font>
<font color='#0000FF'>typename</font> image_type
<font color='#5555FF'>&gt;</font>
<font color='#0000FF'><u>void</u></font> <b><a name='load_jpeg'></a>load_jpeg</b> <font face='Lucida Console'>(</font>
image_type<font color='#5555FF'>&amp;</font> image,
<font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> imgbuff,
<font color='#0000FF'><u>size_t</u></font> imgbuffsize
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>jpeg_loader</font><font face='Lucida Console'>(</font><font color='#0000FF'>reinterpret_cast</font><font color='#5555FF'>&lt;</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font><font color='#5555FF'>&gt;</font><font face='Lucida Console'>(</font>imgbuff<font face='Lucida Console'>)</font>, imgbuffsize<font face='Lucida Console'>)</font>.<font color='#BB00BB'>get_image</font><font face='Lucida Console'>(</font>image<font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<b>}</b>
<font color='#0000FF'>#ifdef</font> NO_MAKEFILE
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='jpeg_loader.cpp.html'>jpeg_loader.cpp</a>"
<font color='#0000FF'>#endif</font>
<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_JPEG_IMPORT
</font>
</pre></body></html>