Version 1.0.2.0

Added new option to premultiply alpha when converting to XNB (now on by default).

Author: trigger-segfault

Readme.md

@@ -8,16 +8,16 @@
 
 A combination tool for managing Terraria content resources. Convert, extract, backup, and restore. The unofficial sequel to TExtract.
 
-![Window Preview](http://i.imgur.com/oTuVrGQ.png)
+![Window Preview](https://i.imgur.com/oTuVrGQ.png)
 
-### [Wiki](https://github.com/trigger-death/TConvert/wiki) | [Credits](https://github.com/trigger-death/TConvert/wiki/Credits) | [Image Album](http://imgur.com/a/QaoPd)
+### [Wiki](https://github.com/trigger-death/TConvert/wiki) | [Credits](https://github.com/trigger-death/TConvert/wiki/Credits) | [Image Album](https://imgur.com/a/QaoPd)
 
 ### [![Get TConvert](http://i.imgur.com/4BGRFF0.png)](https://github.com/trigger-death/TConvert/releases/latest)
 
 ## About
 
 * **Created By:** Robert Jordan
-* **Version:** 1.0.1.0
+* **Version:** 1.0.2.0
 * **Language:** C#, WPF
 
 ## Requirements for Running

TConvert/App.config

@@ -98,6 +98,9 @@
       <setting name="ExtractAllowFonts" serializeAs="String">
         <value>True</value>
       </setting>
+      <setting name="PremultiplyAlpha" serializeAs="String">
+        <value>True</value>
+      </setting>
     </TConvert.Properties.Settings>
   </userSettings>
 </configuration>

TConvert/App.xaml.cs

@@ -41,7 +41,7 @@ private Assembly OnResolveAssemblies(object sender, ResolveEventArgs args) {
 
 			string path = assemblyName.Name + ".dll";
 			if (assemblyName.CultureInfo.Equals(CultureInfo.InvariantCulture) == false) {
-				path = String.Format(@"{0}\{1}", assemblyName.CultureInfo, path);
+				path = string.Format(@"{0}\{1}", assemblyName.CultureInfo, path);
 			}
 
 			using (Stream stream = executingAssembly.GetManifestResourceStream(path)) {

TConvert/CommandLine.cs

@@ -40,7 +40,9 @@ private enum ArgTypes {
 			//AutoCloseDef= 0x4000,
 			//KeepOpenDef = 0x8000,
 			Compress	= 0x10000,
-			DontCompress= 0x20000
+			DontCompress= 0x20000,
+			Premultiply	= 0x40000,
+			DontPremultiply	= 0x80000,
 		}
 
 		/**<summary>Information about a command line option.</summary>*/
@@ -96,6 +98,8 @@ public string OptionsToString() {
 
 			{ ArgTypes.Compress,new OptionInfo(ProcessCompress, "Compress", "Images will be compressed.", null, "-ic", "--compress") },
 			{ ArgTypes.DontCompress,new OptionInfo(ProcessDontCompress, "Don't Compress", "Images will not be compressed.", null, "-dc", "--dont-compress") },
+			{ ArgTypes.Premultiply, new OptionInfo(ProcessPremultiply, "Premultiply", "RGB will be multiplied by alpha.", null, "-pr", "--premult") },
+			{ ArgTypes.DontPremultiply, new OptionInfo(ProcessDontPremultiply, "Don't Premultiply", "RGB will not be modified.", null, "-dp", "--dont-premult") },
 		};
 
 		#endregion
@@ -124,6 +128,8 @@ public string OptionsToString() {
 		private static bool autoClose = Settings.Default.AutoCloseCmdProgress;
 		/**<summary>True if images are compressed.</summary>*/
 		private static bool compress = Settings.Default.CompressImages && XCompress.IsAvailable;
+		/**<summary>True if alpha is premultiplied.</summary>*/
+		private static bool premultiply = Settings.Default.PremultiplyAlpha;
 		/**<summary>True if a sound is played upon completion.</summary>*/
 		private static bool sound = Settings.Default.CompletionSound;
 		/**<summary>True if in console-only mode.</summary>*/
@@ -335,12 +341,12 @@ public static void ProcessFiles() {
 			});
 			#if !(CONSOLE)
 			if (!console) {
-				Processing.StartProgressThread(null, "Processing Files...", autoClose, compress, sound, thread);
+				Processing.StartProgressThread(null, "Processing Files...", autoClose, compress, sound, premultiply, thread);
 			}
 			else
 			#endif
 			{
-				Processing.StartConsoleThread("Processing Files...", silent, compress, sound, thread);
+				Processing.StartConsoleThread("Processing Files...", silent, compress, sound, premultiply, thread);
 			}
 		}
 
@@ -554,6 +560,24 @@ private static void ProcessDontCompress() {
 			else
 				compress = false;
 		}
+		/**<summary>Processes the Premultiply option.</summary>*/
+		private static void ProcessPremultiply() {
+			if (passedArgs.HasFlag(ArgTypes.Premultiply))
+				LogOptionAlreadySpecified(ArgTypes.Premultiply);
+			if (passedArgs.HasFlag(ArgTypes.DontPremultiply))
+				LogOptionAlreadySpecified(ArgTypes.DontPremultiply);
+			else
+				premultiply = true;
+		}
+		/**<summary>Processes the Premultiply option.</summary>*/
+		private static void ProcessDontPremultiply() {
+			if (passedArgs.HasFlag(ArgTypes.Premultiply))
+				LogOptionAlreadySpecified(ArgTypes.Premultiply);
+			if (passedArgs.HasFlag(ArgTypes.DontPremultiply))
+				LogOptionAlreadySpecified(ArgTypes.DontPremultiply);
+			else
+				premultiply = false;
+		}
 
 		#endregion
 		//--------------------------------

TConvert/Config.cs

@@ -39,6 +39,8 @@ public static class Config {
 		public static bool CompressImages { get; set; }
 		/**<summary>True if a sound is played on completion.</summary>*/
 		public static bool CompletionSound { get; set; }
+		/**<summary>True if alpha is premultiplied by default when converting to xnb.</summary>*/
+		public static bool PremultiplyAlpha { get; set; }
 
 		#endregion
 		//=========== CLASSES ============
@@ -181,6 +183,7 @@ public static void Load() {
 			AutoCloseCmdProgress = Settings.Default.AutoCloseCmdProgress;
 			CompressImages = Settings.Default.CompressImages && XCompress.IsAvailable;
 			CompletionSound = Settings.Default.CompletionSound;
+			PremultiplyAlpha = Settings.Default.PremultiplyAlpha;
 
 			Extract.FolderInput = Settings.Default.ExtractFolderInput;
 			Extract.FolderOutput = Settings.Default.ExtractFolderOutput;
@@ -224,6 +227,7 @@ public static void Save() {
 			Settings.Default.AutoCloseCmdProgress = AutoCloseCmdProgress;
 			Settings.Default.CompressImages = CompressImages;
 			Settings.Default.CompletionSound = CompletionSound;
+			Settings.Default.PremultiplyAlpha = PremultiplyAlpha;
 
 			Settings.Default.ExtractFolderInput = Extract.FolderInput;
 			Settings.Default.ExtractFolderOutput = Extract.FolderOutput;

TConvert/Convert/PngConverter.cs

@@ -53,7 +53,7 @@ public class PngConverter {
 		#region Converting
 
 		/**<summary>Converts the specified input file and writes it to the output file.</summary>*/
-		public static bool Convert(string inputFile, string outputFile, bool changeExtension, bool compressed, bool reach) {
+		public static bool Convert(string inputFile, string outputFile, bool changeExtension, bool compressed, bool reach, bool premultiply) {
 			if (changeExtension) {
 				outputFile = Path.ChangeExtension(outputFile, ".xnb");
 			}
@@ -80,11 +80,11 @@ public static bool Convert(string inputFile, string outputFile, bool changeExten
 						}
 						writer.Write(flagBits); // flag-bits; 00=reach, 01=hiprofile, 80=compressed, 00=uncompressed
 						if (compressed) {
-							WriteCompressedData(writer, bmp);
+							WriteCompressedData(writer, bmp, premultiply);
 						}
 						else {
 							writer.Write(MetadataSize + bmp.Width * bmp.Height * 4); // compressed file size
-							WriteData(bmp, writer);
+							WriteData(bmp, writer, premultiply);
 						}
 					}
 				}
@@ -97,11 +97,11 @@ public static bool Convert(string inputFile, string outputFile, bool changeExten
 		#region Writing
 
 		/**<summary>Write compressed image data.</summary>*/
-		private static void WriteCompressedData(BinaryWriter writer, Bitmap png) {
+		private static void WriteCompressedData(BinaryWriter writer, Bitmap png, bool premultiply) {
 			using (MemoryStream stream = new MemoryStream()) {
 				byte[] uncompressedData;
 				using (BinaryWriter writer2 = new BinaryWriter(stream)) {
-					WriteData(png, writer2);
+					WriteData(png, writer2, premultiply);
 					uncompressedData = stream.ToArray();
 				}
 				byte[] compressedData = XCompress.Compress(uncompressedData);
@@ -111,7 +111,7 @@ private static void WriteCompressedData(BinaryWriter writer, Bitmap png) {
 			}
 		}
 		/**<summary>Write uncompressed image data.</summary>*/
-		private static void WriteData(Bitmap bmp, BinaryWriter writer) {
+		private static void WriteData(Bitmap bmp, BinaryWriter writer, bool premultiply) {
 			writer.Write7BitEncodedInt(1);                 // type-reader-count
 			writer.Write7BitEncodedString(Texture2DType);  // type-reader-name
 			writer.Write((int)0);                          // reader version number
@@ -130,14 +130,30 @@ private static void WriteData(Bitmap bmp, BinaryWriter writer) {
 			}
 			BitmapData bitmapData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
 			try {
-				var length = bitmapData.Stride * bitmapData.Height;
+				int length = bitmapData.Stride * bitmapData.Height;
 				byte[] bytes = new byte[length];
 				Marshal.Copy(bitmapData.Scan0, bytes, 0, length);
-				// Swap the R and B channels
 				for (int i = 0; i < bytes.Length; i += 4) {
-					byte b = bytes[i];
-					bytes[i] = bytes[i + 2];
-					bytes[i + 2] = b;
+					// Always swap red and blue channels premultiply alpha if requested
+					int a = bytes[i + 3];
+					if (!premultiply || a == 255) {
+						// No premultiply necessary
+						byte b = bytes[i];
+						bytes[i] = bytes[i + 2];
+						bytes[i + 2] = b;
+					}
+					else if (a != 0) {
+						byte b = bytes[i];
+						bytes[i] = (byte) (bytes[i + 2] * a / 255);
+						bytes[i + 1] = (byte) (bytes[i + 1] * a / 255);
+						bytes[i + 2] = (byte) (b * a / 255);
+					}
+					else {
+						// alpha is zero, so just zero everything
+						bytes[i] = 0;
+						bytes[i + 1] = 0;
+						bytes[i + 2] = 0;
+					}
 				}
 				writer.Write(bytes);
 			}

TConvert/Convert/WavConverter.cs

@@ -97,8 +97,7 @@ public static bool Convert(string inputFile, string outputFile, bool changeExten
 						throw new WavException("Average bytes per second number incorrect.");
 					if (nBlockAlign != (nChannels * (wBitsPerSample / 8)))
 						throw new WavException("Block align number incorrect.");
-
-
+					
 					inputStream.Position = chunkSize;
 
 					format = new string(reader.ReadChars(4));

TConvert/Extract/Ffmpeg.cs

@@ -61,8 +61,6 @@ public static bool Convert(string input, string output) {
 				"-acodec pcm_s16le " +
 				"-nostdin " +
 				"-ab 128k " +
-				//"-fflags +bitexact -flags:a +bitexact " +
-				//"-metadata title=\"\" " +
 				"-map_metadata -1 " +
 				"-y " +
 				"\"" + Path.GetFullPath(output) + "\"";

TConvert/MainWindow.xaml

@@ -44,6 +44,11 @@
                 </MenuItem>
             </MenuItem>
             <MenuItem Header="Options">
+                <MenuItem x:Name="menuItemPremultiply" Header="Premultiply Alpha" IsCheckable="True">
+                    <MenuItem.Icon>
+                        <Image Source="Resources/Icons/Premultiply.png"/>
+                    </MenuItem.Icon>
+                </MenuItem>
                 <MenuItem x:Name="menuItemCompressImages" Header="Compress Images" Click="OnCompressImagesChecked" IsCheckable="True">
                     <MenuItem.Icon>
                         <Image Source="Resources/Icons/Compression.png"/>

TConvert/MainWindow.xaml.cs

@@ -144,6 +144,7 @@ private void LoadConfig() {
 
 			menuItemCompressImages.IsEnabled = XCompress.IsAvailable;
 			menuItemCompressImages.IsChecked = Config.CompressImages;
+			menuItemPremultiply.IsChecked = Config.PremultiplyAlpha;
 			menuItemCompletionSound.IsChecked = Config.CompletionSound;
 			menuItemAutoCloseProgress.IsChecked = Config.AutoCloseProgress;
 			menuItemAutoCloseDropProgress.IsChecked = Config.AutoCloseDropProgress;
@@ -251,7 +252,7 @@ private void OnExtract(object sender, RoutedEventArgs e) {
 					Processing.ExtractSingleFile(input, output);
 				});
 			}
-			Processing.StartProgressThread(this, "Extracting...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, thread);
+			Processing.StartProgressThread(this, "Extracting...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 		}
 		private void OnExtractModeChanged(object sender, SelectionChangedEventArgs e) {
 			if (!loaded)
@@ -374,7 +375,7 @@ private void OnConvert(object sender, RoutedEventArgs e) {
 					Processing.ConvertSingleFile(input, output);
 				});
 			}
-			Processing.StartProgressThread(this, "Converting...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, thread);
+			Processing.StartProgressThread(this, "Converting...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 		}
 		private void OnConvertModeChanged(object sender, SelectionChangedEventArgs e) {
 			if (!loaded)
@@ -471,7 +472,7 @@ private void OnBackup(object sender, RoutedEventArgs e) {
 			Thread thread = new Thread(() => {
 				Processing.BackupFiles(input, output);
 			});
-			Processing.StartProgressThread(this, "Backing Up...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, thread);
+			Processing.StartProgressThread(this, "Backing Up...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 		}
 		private void OnRestore(object sender, RoutedEventArgs e) {
 			string input = Config.Backup.FolderBackup;
@@ -495,7 +496,7 @@ private void OnRestore(object sender, RoutedEventArgs e) {
 			Thread thread = new Thread(() => {
 				Processing.RestoreFiles(input, output);
 			});
-			Processing.StartProgressThread(this, "Restoring...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, thread);
+			Processing.StartProgressThread(this, "Restoring...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 		}
 		private void OnBackupChangeContent(object sender, RoutedEventArgs e) {
 			System.Windows.Forms.FolderBrowserDialog dialog = new System.Windows.Forms.FolderBrowserDialog();
@@ -556,7 +557,7 @@ private void OnRunScript(object sender, RoutedEventArgs e) {
 			thread = new Thread(() => {
 				Processing.RunScript(input);
 			});
-			Processing.StartProgressThread(this, "Running Script...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, thread);
+			Processing.StartProgressThread(this, "Running Script...", Config.AutoCloseProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 		}
 		private void OnChangeScript(object sender, RoutedEventArgs e) {
 			OpenFileDialog dialog = new OpenFileDialog();
@@ -648,7 +649,7 @@ private void OnFileDrop(object sender, DragEventArgs e) {
 					Thread thread = new Thread(() => {
 						Processing.ProcessDropFiles(extractFiles.ToArray(), convertFiles.ToArray(), scriptFiles.ToArray());
 					});
-					Processing.StartProgressThread(this, "Processing Drop Files...", Config.AutoCloseDropProgress, Config.CompressImages, Config.CompletionSound, thread);
+					Processing.StartProgressThread(this, "Processing Drop Files...", Config.AutoCloseDropProgress, Config.CompressImages, Config.CompletionSound, Config.PremultiplyAlpha, thread);
 				}
 			}
 		}
@@ -730,6 +731,11 @@ private void OnExit(object sender, RoutedEventArgs e) {
 			Close();
 		}
 
+		private void OnPremultiplyAlphaChecked(object sender, RoutedEventArgs e) {
+			if (!loaded)
+				return;
+			Config.PremultiplyAlpha = menuItemPremultiply.IsChecked;
+		}
 		private void OnCompressImagesChecked(object sender, RoutedEventArgs e) {
 			if (!loaded)
 				return;