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Daniel Borges
2012-09-02 15:24:38 +02:00
commit 5b667b5781
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213
DSTexCompress/FreeImage/Wrapper/FreeImage.NET/cs/Samples/Sample 05 - Working with pixels/Program.cs Normal file
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using System;
using FreeImageAPI;
using System.Drawing;
namespace Sample05
{
class Program
{
static void Main(string[] args)
{
// Check if FreeImage.dll is available (can be in %path%).
if (!FreeImage.IsAvailable())
{
Console.WriteLine("FreeImage.dll seems to be missing. Aborting.");
return;
}
Sample sample = new Sample();
// The example will flip the bitmap by manually accessing the
// bitmaps scanlines and swapping them
sample.Example01();
// The example will access each pixel of the bitmap manually
// and change its color intensity to 3/4 of the original value
// which will have a darker bitmap as result.
sample.Example02();
// The example will access and swap the bitmaps palette from
// 'FIC_MINISBLACK' to 'FIC_MINISWHITE'. Then it will swap each pixels
// palette index so that each pixel is assigned to the its old value
// so that the bitmaps "pixeldata" stays the same.
sample.Example03();
}
}
public class Sample
{
FIBITMAP dib = new FIBITMAP();
public void Example01()
{
// Load sample file
dib = FreeImage.LoadEx("Sample.jpg", FREE_IMAGE_LOAD_FLAGS.JPEG_ACCURATE);
// Check whether loading succeeded
if (dib.IsNull)
{
Console.WriteLine("Sample.jpg could not be loaded. Aborting.");
return;
}
// Check whether the bitmap has 24 bpp color depth to ensure
// using RGBTRIPPLE is correct.
if (FreeImage.GetBPP(dib) != 24)
{
Console.WriteLine("Sample.jpg is no 24 bpp bitmap. Aborting.");
FreeImage.UnloadEx(ref dib);
return;
}
// Store height of the bitmap
int height = (int)FreeImage.GetHeight(dib);
// Iterate over half of the bitmaps scanlines and swap
// line[1] with line[height], line[2] with line[height-1] etc which will
// flip the image.
for (int i = 0; i < (height / 2); i++)
{
// Get scanline from the bottom part of the bitmap
Scanline<RGBTRIPLE> scanlineBottom = new Scanline<RGBTRIPLE>(dib, i);
// Get scanline from the top part of the bitmap
Scanline<RGBTRIPLE> scanlineTop = new Scanline<RGBTRIPLE>(dib, height - 1 - i);
// Get arrays of RGBTRIPPLEs that contain the bitmaps real pixel data
// of the two scanlines.
RGBTRIPLE[] rgbtBottom = scanlineBottom.Data;
RGBTRIPLE[] rgbtTop = scanlineTop.Data;
// Restore the scanline across to switch the bitmaps lines.
scanlineBottom.Data = rgbtTop;
scanlineTop.Data = rgbtBottom;
}
// Store the bitmap to disk
if (!FreeImage.SaveEx(ref dib, "SampleOut01.jpg", FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYGOOD, true))
{
Console.WriteLine("Error while saving 'SampleOut01.jpg'");
FreeImage.UnloadEx(ref dib);
}
}
public void Example02()
{
dib = FreeImage.LoadEx("Sample.jpg", FREE_IMAGE_LOAD_FLAGS.JPEG_ACCURATE);
// Check whether loading succeeded
if (dib.IsNull)
{
Console.WriteLine("Sample.jpg could not be loaded. Aborting.");
return;
}
// Check whether the bitmap has 24 bpp color depth to ensure
// using RGBTRIPPLE is correct.
if (FreeImage.GetBPP(dib) != 24)
{
Console.WriteLine("Sample.jpg is no 24 bpp bitmap. Aborting.");
FreeImage.UnloadEx(ref dib);
return;
}
// Iterate over all scanlines
for (int i = 0; i < FreeImage.GetHeight(dib); i++)
{
// Get scanline
Scanline<RGBTRIPLE> scanline = new Scanline<RGBTRIPLE>(dib, i);
// Get pixeldata from scanline
RGBTRIPLE[] rgbt = scanline.Data;
// Iterate over each pixel reducing the colors intensity to 3/4 which
// will darken the bitmap.
for (int j = 0; j < rgbt.Length; j++)
{
rgbt[j].rgbtBlue = (byte)((int)rgbt[j].rgbtBlue * 3 / 4);
rgbt[j].rgbtGreen = (byte)((int)rgbt[j].rgbtGreen * 3 / 4);
rgbt[j].rgbtRed = (byte)((int)rgbt[j].rgbtRed * 3 / 4);
// In case no direct access to the data is implemented
// the following way is equivalent:
//
// Color color = rgbt[j].color;
// rgbt[j].color = Color.FromArgb(color.R * 3 / 4, color.G * 3 / 4, color.B * 3 / 4);
}
// Write the darkened scanline back to memory
scanline.Data = rgbt;
}
// Store the bitmap to disk
if (!FreeImage.SaveEx(ref dib, "SampleOut02.jpg", FREE_IMAGE_SAVE_FLAGS.JPEG_QUALITYGOOD, true))
{
Console.WriteLine("Error while saving 'SampleOut02.jpg'");
FreeImage.UnloadEx(ref dib);
}
}
public void Example03()
{
dib = FreeImage.LoadEx("Sample.tif");
// Check whether loading succeeded
if (dib.IsNull)
{
Console.WriteLine("Sample.tif could not be loaded. Aborting.");
return;
}
// Check whether the bitmap has 4 bpp color depth to ensure
// using FI4B is correct.
if (FreeImage.GetBPP(dib) != 4)
{
Console.WriteLine("Sample.tif is no 4 bpp bitmap. Aborting.");
FreeImage.UnloadEx(ref dib);
return;
}
// Get the bitmaps palette
Palette palette = FreeImage.GetPaletteEx(dib);
int size = (int)palette.Length;
// Check whether the palette has a color (is valid)
if (size == 0)
{
Console.WriteLine("Sample.tif has no valid palette. Aborting.");
FreeImage.UnloadEx(ref dib);
return;
}
// Swapping the palette
for (int i = 0; i < size / 2; i++)
{
RGBQUAD temp = palette[i];
palette[i] = palette[size - 1 - i];
palette[size - 1 - i] = temp;
}
// Iterate over each scanline
for (int i = 0; i < FreeImage.GetHeight(dib); i++)
{
// Get scanline
Scanline<FI4BIT> scanline = new Scanline<FI4BIT>(dib, i);
// Iterate over all pixels swapping the palette index
// so that the color will stay the same
for (int j = 0; j < scanline.Length; j++)
{
scanline[j] = (byte)(size - 1 - scanline[j]);
}
}
// Save the bitmap to disk
if (!FreeImage.SaveEx(ref dib, "SampleOut03.tif", FREE_IMAGE_SAVE_FLAGS.TIFF_LZW, true))
{
Console.WriteLine("Error while saving 'SampleOut03.tif'");
FreeImage.UnloadEx(ref dib);
}
}
}
}

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DSTexCompress/FreeImage/Wrapper/FreeImage.NET/cs/Samples/Sample 05 - Working with pixels/Properties/AssemblyInfo.cs Normal file
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using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
[assembly: AssemblyTitle("")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("")]
[assembly: AssemblyCopyright("")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
[assembly: ComVisible(false)]
[assembly: Guid("fd43331d-5ea4-40f8-86d5-8f820d606912")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

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DSTexCompress/FreeImage/Wrapper/FreeImage.NET/cs/Samples/Sample 05 - Working with pixels/Sample 05 - Working with pixels.csproj Normal file
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<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>8.0.50727</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{A501F134-8FB6-460B-AFE9-884A696C1C07}</ProjectGuid>
<OutputType>Exe</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>Sample05</RootNamespace>
<AssemblyName>Sample05</AssemblyName>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<UseVSHostingProcess>false</UseVSHostingProcess>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>none</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<UseVSHostingProcess>false</UseVSHostingProcess>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
<DebugSymbols>true</DebugSymbols>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<DebugType>full</DebugType>
<PlatformTarget>x86</PlatformTarget>
<UseVSHostingProcess>false</UseVSHostingProcess>
<ErrorReport>prompt</ErrorReport>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<Optimize>true</Optimize>
<DebugType>
</DebugType>
<PlatformTarget>x86</PlatformTarget>
<UseVSHostingProcess>false</UseVSHostingProcess>
<ErrorReport>prompt</ErrorReport>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x64' ">
<DebugSymbols>true</DebugSymbols>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<DebugType>full</DebugType>
<PlatformTarget>x64</PlatformTarget>
<UseVSHostingProcess>false</UseVSHostingProcess>
<ErrorReport>prompt</ErrorReport>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x64' ">
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<Optimize>true</Optimize>
<DebugType>
</DebugType>
<PlatformTarget>x64</PlatformTarget>
<UseVSHostingProcess>false</UseVSHostingProcess>
<ErrorReport>prompt</ErrorReport>
</PropertyGroup>
<ItemGroup>
<Compile Include="Program.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup>
<ItemGroup>
<Reference Include="FreeImageNET, Version=3.11.0.0, Culture=neutral, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\Bin\FreeImageNET.dll</HintPath>
</Reference>
<Reference Include="System" />
<Reference Include="System.Drawing" />
</ItemGroup>
<ItemGroup>
<None Include="Sample.jpg">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
<None Include="Sample.tif">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
</ItemGroup>
<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
</Project>

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