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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
//
// Authors:
// Jordi Mas i Hernandez (jordi@ximian.com)
// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2004 Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004-2007 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Text.RegularExpressions;
namespace System.Drawing.Imaging.Tests;
public class ImageCodecInfoTests
{
private const string GIF_CSID = "557cf402-1a04-11d3-9a73-0000f81ef32e";
private const string EMF_CSID = "557cf403-1a04-11d3-9a73-0000f81ef32e";
private const string BMP_DIB_RLE_CSID = "557cf400-1a04-11d3-9a73-0000f81ef32e";
private const string JPG_JPEG_JPE_JFIF_CSID = "557cf401-1a04-11d3-9a73-0000f81ef32e";
private const string PNG_CSID = "557cf406-1a04-11d3-9a73-0000f81ef32e";
private const string ICO_CSID = "557cf407-1a04-11d3-9a73-0000f81ef32e";
private const string WMF_CSID = "557cf404-1a04-11d3-9a73-0000f81ef32e";
private const string TIF_CSID = "557cf405-1a04-11d3-9a73-0000f81ef32e";
private readonly Dictionary<Guid, ImageCodecInfo> _decoders;
private readonly Dictionary<Guid, ImageCodecInfo> _encoders;
public ImageCodecInfoTests()
{
_decoders = [];
_encoders = [];
foreach (ImageCodecInfo decoder in ImageCodecInfo.GetImageDecoders())
_decoders[decoder.Clsid] = decoder;
foreach (ImageCodecInfo encoder in ImageCodecInfo.GetImageEncoders())
_encoders[encoder.Clsid] = encoder;
}
private ImageCodecInfo GetEncoder(string clsid)
{
_encoders.TryGetValue(new Guid(clsid), out ImageCodecInfo encoder);
return encoder;
}
private ImageCodecInfo GetDecoder(string clsid)
{
_decoders.TryGetValue(new Guid(clsid), out ImageCodecInfo decoder);
return decoder;
}
private void CheckDecoderAndEncoder(string clsid, ImageFormat format, string CodecName, string DllName,
string FilenameExtension, ImageCodecFlags Flags, string FormatDescription,
string MimeType, int signatureLength, string mask, string pattern, string pattern2)
{
ImageCodecInfo encoder = GetEncoder(clsid);
ImageCodecInfo decoder = GetDecoder(clsid);
if (encoder is not null)
{
CheckImageCodecInfo(format, CodecName, DllName, FilenameExtension, Flags, FormatDescription, MimeType, signatureLength, mask, pattern, pattern2, encoder);
}
if (decoder is not null)
{
CheckImageCodecInfo(format, CodecName, DllName, FilenameExtension, Flags, FormatDescription, MimeType, signatureLength, mask, pattern, pattern2, decoder);
}
}
private void CheckImageCodecInfo(ImageFormat format, string CodecName, string DllName, string FilenameExtension, ImageCodecFlags Flags, string FormatDescription, string MimeType, int signatureLength, string mask, string pattern, string pattern2, ImageCodecInfo codecInfo)
{
Regex extRegex = new(@"^(\*\.\w+(;(\*\.\w+))*;)?" +
Regex.Escape(FilenameExtension) + @"(;\*\.\w+(;(\*\.\w+))*)?$",
RegexOptions.IgnoreCase | RegexOptions.Singleline);
Assert.Equal(format.Guid, codecInfo.FormatID);
Assert.Contains(CodecName, codecInfo.CodecName);
Assert.Equal(DllName, codecInfo.DllName);
Assert.Matches(extRegex, codecInfo.FilenameExtension);
Assert.Equal(Flags, codecInfo.Flags);
Assert.Contains(FormatDescription, codecInfo.FormatDescription);
Assert.Contains(MimeType, codecInfo.MimeType);
Assert.Equal(signatureLength, codecInfo.SignatureMasks.Length);
for (int i = 0; i < signatureLength; i++)
{
Assert.Equal(mask, BitConverter.ToString(codecInfo.SignatureMasks[i]));
}
Assert.Equal(signatureLength, codecInfo.SignaturePatterns.Length);
Assert.Equal(pattern, BitConverter.ToString(codecInfo.SignaturePatterns[0]));
if (pattern2 is not null)
Assert.Equal(pattern2, BitConverter.ToString(codecInfo.SignaturePatterns[1]));
}
public static IEnumerable<object[]> CodecInfoTestData
{
get
{
yield return new object[]
{
WMF_CSID, ImageFormat.Wmf,
"WMF", null, "*.WMF",
ImageCodecFlags.Builtin | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"WMF", "image/x-wmf", 1, "FF-FF-FF-FF", "D7-CD-C6-9A", null
};
yield return new object[]
{
EMF_CSID, ImageFormat.Emf,
"EMF", null, "*.EMF",
ImageCodecFlags.Builtin | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"EMF", "image/x-emf", 1, "00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-FF-FF-FF-FF",
"00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-20-45-4D-46", null
};
yield return new object[]
{
ICO_CSID, ImageFormat.Icon,
"ICO", null, "*.ICO",
ImageCodecFlags.Builtin | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"ICO", "image/x-icon", 1, "FF-FF-FF-FF", "00-00-01-00", null
};
yield return new object[]
{
TIF_CSID, ImageFormat.Tiff,
"TIFF", null, "*.TIF;*.TIFF",
ImageCodecFlags.Builtin | ImageCodecFlags.Encoder | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"TIFF", "image/tiff", 2, "FF-FF", "49-49", "4D-4D"
};
yield return new object[]
{
PNG_CSID, ImageFormat.Png,
"PNG", null, "*.PNG",
ImageCodecFlags.Builtin | ImageCodecFlags.Encoder | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"PNG", "image/png", 1, "FF-FF-FF-FF-FF-FF-FF-FF", "89-50-4E-47-0D-0A-1A-0A", null
};
yield return new object[]
{
JPG_JPEG_JPE_JFIF_CSID, ImageFormat.Jpeg,
"JPEG", null, "*.JPG",
ImageCodecFlags.Builtin | ImageCodecFlags.Encoder | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"JPEG", "image/jpeg", 1, "FF-FF", "FF-D8", null
};
yield return new object[]
{
GIF_CSID, ImageFormat.Gif,
"GIF", null, "*.GIF",
ImageCodecFlags.Builtin | ImageCodecFlags.Encoder | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"GIF", "image/gif", 2, "FF-FF-FF-FF-FF-FF", "47-49-46-38-39-61", "47-49-46-38-37-61"
};
yield return new object[]
{
BMP_DIB_RLE_CSID, ImageFormat.Bmp,
"BMP", null, "*.BMP",
ImageCodecFlags.Builtin | ImageCodecFlags.Encoder | ImageCodecFlags.Decoder | ImageCodecFlags.SupportBitmap,
"BMP", "image/bmp", 1, "FF-FF", "42-4D", null
};
}
}
[Theory]
[InlineData(GIF_CSID)]
[InlineData(EMF_CSID)]
[InlineData(BMP_DIB_RLE_CSID)]
[InlineData(JPG_JPEG_JPE_JFIF_CSID)]
[InlineData(PNG_CSID)]
[InlineData(ICO_CSID)]
[InlineData(WMF_CSID)]
[InlineData(TIF_CSID)]
public void GetDecoder_Success(string csid)
{
Assert.NotNull(GetDecoder(csid));
}
[Theory]
[InlineData(GIF_CSID)]
[InlineData(BMP_DIB_RLE_CSID)]
[InlineData(JPG_JPEG_JPE_JFIF_CSID)]
[InlineData(PNG_CSID)]
[InlineData(TIF_CSID)]
public void GetEncoder_Success(string csid)
{
Assert.NotNull(GetEncoder(csid));
}
[Fact]
public void CountEncoders_ReturnsExpected()
{
Assert.Equal(5, _encoders.Count);
}
[Fact]
public void CountDecoders_ReturnsExpected()
{
Assert.Equal(8, _decoders.Count);
}
[Theory]
[MemberData(nameof(CodecInfoTestData))]
public void CheckDecoderAndEncoder_ReturnsExpected(string clsid, ImageFormat format, string codecName, string dllName,
string fileNameExtension, ImageCodecFlags flags, string formatDescription,
string mimeType, int signatureLength, string mask, string pattern, string pattern2)
{
CheckDecoderAndEncoder(clsid, format, codecName, dllName, fileNameExtension, flags, formatDescription, mimeType, signatureLength, mask, pattern, pattern2);
}
[Theory]
[InlineData(WMF_CSID)]
[InlineData(EMF_CSID)]
[InlineData(ICO_CSID)]
public void GetEncoder_NoSuchEncoding_ReturnsNull(string clsid)
{
Assert.Null(GetEncoder(clsid));
}
}
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