Split chunk reading into helper functions.

res/pack_dj_menu.csv

@@ -17,8 +17,8 @@
 16,Normal,Here's the next tune.,AV Player
 17,Normal,I can feel this race is gonna be really hot. Now start your engine and get ready.,Pre-race
 18,Normal,I can feel this race is gonna be really hot. Now start your engine and get ready.,Pre-race
-19,Normal,Heh aww yeah… I can feel this race is gonna be really hot. Now start your engine and get ready.,Pre-race
+19,Normal,Hehe aww yeah… I can feel this race is gonna be really hot. Now start your engine and get ready.,Pre-race
-20,Normal,,
+20,Normal,"Are you nervous? Hah, I'm so excited! Come on! Hurry up and start this race.",Pre-race
 21,Normal,,
 22,Normal,,
 23,Normal,,

src/goblincave/gitea/nes/AudioExtractor.java

@@ -263,21 +263,79 @@ public class AudioExtractor {
 		
 	}
 	
+
+	
 	/**
-	 * Helper method that converts a little-endian byte array into a long value.
+	 * Helper function to prompt user to select a program task.
 	 * 
-	 * @param bytes (up to 8 bytes)
+	 * @param reader
-	 * @return value
+	 * @param input
+	 * @return operation
 	 */
-	public static long littleEndianToLong(byte[] bytes) {
+	private static String retrieveOperation(BufferedReader reader, String input) {
-		if(bytes.length > 8)
+		
-			throw new IllegalArgumentException("Byte array must be 8 bytes or shorter.");
+		String operation = null;
-		long value = 0;
+		String[] values = {"identify", "extract", "pack", "patch", "print", "exit"};
-		for(int i = 0; i < bytes.length; i++)
+		
-			value |= (long) (bytes[i] & 0xFF) << (8 * i);
+		if(input != null)
-		return value;
+			for(int i = 0; i < values.length; i++)
+				if(values[i].equalsIgnoreCase(input))
+					operation = values[i];
+		
+		if(operation == null) {
+		
+			String prompt = "\n" + Ansi.colorize("Operations", Attribute.BRIGHT_YELLOW_TEXT(), Attribute.BOLD()) + ":\n"
+					+ "- " + Ansi.colorize("Identify", Attribute.BRIGHT_RED_TEXT()) + " a package or audio file\n"
+					+ "- " + Ansi.colorize("Extract", Attribute.TEXT_COLOR(0xFF, 0x68, 0x1F)) + " audio tracks from a package (BIN -> WAV/XMA)\n"
+					+ "- " + Ansi.colorize("Convert", Attribute.TEXT_COLOR(0xFF, 0xEA, 0x00)) + " audio tracks to another format (XMA <-> WAV <-> FLAC)\n"
+					+ "- " + Ansi.colorize("Patch", Attribute.BRIGHT_GREEN_TEXT()) + " an audio track to repeat (WAV)\n"
+					+ "- " + Ansi.colorize("Pack", Attribute.BRIGHT_BLUE_TEXT()) + " audio tracks into a package (WAV/XMA -> BIN)\n"
+					+ "- " + Ansi.colorize("Print", Attribute.TEXT_COLOR(0x6B, 0x4C, 0xE3)) + " a Ridge Racer 6 style ASCII logo\n"
+					+ "- " + Ansi.colorize("Exit", Attribute.BRIGHT_MAGENTA_TEXT()) + " program\n"
+					+ "\nPlease select an operation: " + ANSI_BEIGE;
+			
+			operation = retrieveInput(reader, prompt, values);
+			
+			if(CMD_MODE) {
+				
+				Attribute color = null;
+				switch(operation.toLowerCase()) {
+					case "identify":
+						color = Attribute.BRIGHT_RED_TEXT();
+						break;
+					case "extract":
+						color = Attribute.TEXT_COLOR(0xFF, 0x68, 0x1F);
+						break;
+					case "convert":
+						color = Attribute.TEXT_COLOR(0xFF, 0xEA, 0x00);
+					case "patch":
+						color = Attribute.BRIGHT_GREEN_TEXT();
+						break;
+					case "pack":
+						color = Attribute.BRIGHT_BLUE_TEXT();
+						break;
+					case "print":
+						color = Attribute.TEXT_COLOR(0x6B, 0x4C, 0xE3);
+						break;
+					case "exit":
+						color = Attribute.BRIGHT_MAGENTA_TEXT();
+						break;
+				}
+				System.out.println(ANSI_BACKLINE + Ansi.colorize("Please select an operation: ") + Ansi.colorize(operation, color));
+				
+			} else System.out.print(Ansi.colorize(""));
+		
+		}
+		
+		return operation.toLowerCase();
+		
 	}
 	
+	/**
+	 * Examines a given file and reads some of its properties.
+	 * 
+	 * @param unknownFile
+	 */
 	public static void identify(File unknownFile) {
 		
 		// TODO check for characteristics of BIN or WAV files
@@ -307,55 +365,32 @@ public class AudioExtractor {
 				case "wav":
 				case "xma":
 				default: {
-					byte[] buffer = new byte[4];
 					for(long i = 0; i < size - 4; i += 4) {
 						file.seek(i);
 						int value = file.readInt();
 						switch(value) {
 							case ASCII_RIFF: {
-								System.out.println(formatAddress(i) + ":\tRIFF (Resource Interchange File Format) chunk");
+								readRIFFChunk(file, (int) i);
-								if(i + 8 < size) {
-									int riffSize = readChunkSize(file, (int) i);
-									System.out.println(formatAddress(i + 4) + ":\t" + riffSize + " Bytes" + (riffSize > 1024 ? " (" + convertBytes(riffSize) + ")" : ""));
-								}
-								if(i + 12 < size) {
-									file.seek(i + 8);
-									value = file.readInt();
-									if(value == ASCII_WAVE)
-										System.out.println(formatAddress(i + 8) + ":\tWAVE (Waveform Audio File Format) type");
-									i += 8;
-								}
-								System.out.println();
 								break;
 							}
 							case ASCII_fmt: {
-								System.out.println(formatAddress(i) + ":\tfmt (Format) chunk");
+								readFormatChunk(file, (int) i);
-								int fmtSize = 8;
+								break;
-								if(i + 8 < size) {
+							}
-									fmtSize = readChunkSize(file, (int) i);
+							case ASCII_smpl: {
-									System.out.println(formatAddress(i + 4) + ":\t" + fmtSize + " Bytes" + (fmtSize > 1024 ? " (" + convertBytes(fmtSize) + ")" : ""));
+								readSampleChunk(file, (int) i);
-								}
+								break;
-								if(i + fmtSize < size) {
+							}
-									file.seek(i + 8);
+							case ASCII_data: {
-									byte[] LEBytes = new byte[2];
+								readDataChunk(file, (int) i);
-									file.read(LEBytes);
+								break;
-									long encoding = littleEndianToLong(LEBytes);
+							}
-									System.out.print(formatAddress(i + 8) + "\t");
+							case ASCII_ALIG: {
-									if(encoding == 0x0001)
+								readAlignmentChunk(file, (int) i);
-										System.out.print("PCM (Pulse-Code Modulation)");
+								break;
-									else if(encoding == 0x0002)
+							}
-										System.out.print("ADPCM (Adaptive Differential Pulse-Code Modulation)");
+							case ASCII_x2st: {
-									else if(encoding == 0x0165)
+								readx2stChunk(file, (int) i);
-										System.out.print("XMA (Xbox Media Audio)");
-									else if(encoding == 0x0166)
-										System.out.print("XMA2 (Xbox Media Audio 2)");
-									else System.out.print("Unknown");
-										// TODO lookup values from CSV
-									System.out.println(" encoding");
-										
-									i += fmtSize;
-								}
-								System.out.println();
 								break;
 							}
 						}
@@ -370,6 +405,81 @@ public class AudioExtractor {
 		// check if RIFF header
 		
 	}
+	
+	public static void readRIFFChunk(RandomAccessFile file, int offset) throws IOException {
+
+		System.out.println(formatAddress(offset) + ":\tRIFF (Resource Interchange File Format) chunk");
+		
+		if(offset + 8 < file.length()) {
+			int riffSize = readChunkSize(file, offset);
+			System.out.println(formatAddress(offset + 4) + ":\t" + riffSize + " Bytes" + (riffSize > 1024 ? " (" + convertBytes(riffSize) + ")" : ""));
+		}
+		
+		if(offset + 12 < file.length()) {
+			file.seek(offset + 8);
+			if(file.readInt() == ASCII_WAVE)
+				System.out.println(formatAddress(offset + 8) + ":\tWAVE (Waveform Audio File Format) type");
+			offset += 8;
+		}
+		
+		System.out.println();
+		
+	}
+	
+	public static void readFormatChunk(RandomAccessFile file, int offset) throws IOException {
+		
+		System.out.println(formatAddress(offset) + ":\tfmt (Format) chunk");
+		
+		int fmtSize = 8;
+		if(offset + 8 < file.length()) {
+			fmtSize = readChunkSize(file, (int) offset);
+			System.out.println(formatAddress(offset + 4) + ":\t" + fmtSize + " Bytes" + (fmtSize > 1024 ? " (" + convertBytes(fmtSize) + ")" : ""));
+		}
+		
+		if(offset + fmtSize < file.length()) {
+			file.seek(offset + 8);
+			byte[] LEBytes = new byte[2];
+			file.read(LEBytes);
+			int encoding = littleEndianToInt(LEBytes);
+			System.out.print(formatAddress(offset + 8) + "\t");
+			if(encoding == 0x0001)
+				System.out.print("PCM (Pulse-Code Modulation)");
+			else if(encoding == 0x0002)
+				System.out.print("ADPCM (Adaptive Differential Pulse-Code Modulation)");
+			else if(encoding == 0x0165)
+				System.out.print("XMA (Xbox Media Audio)");
+			else if(encoding == 0x0166)
+				System.out.print("XMA2 (Xbox Media Audio 2)");
+			else System.out.print("Unknown");
+				// TODO lookup values from CSV
+			System.out.println(" encoding");
+				
+			offset += fmtSize;
+		}
+		
+		System.out.println();
+		
+	}
+
+	private static void readx2stChunk(RandomAccessFile file, int i) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	private static void readAlignmentChunk(RandomAccessFile file, int i) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	private static void readDataChunk(RandomAccessFile file, int i) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	private static void readSampleChunk(RandomAccessFile file, int i) {
+		// TODO Auto-generated method stub
+		
+	}
 
 	/**
 	 * Formats a file address with leading zeroes.
@@ -658,72 +768,6 @@ public class AudioExtractor {
 		
 	}
 	
-	/**
-	 * Helper function to prompt user to select a program task.
-	 * 
-	 * @param reader
-	 * @param input
-	 * @return operation
-	 */
-	private static String retrieveOperation(BufferedReader reader, String input) {
-		
-		String operation = null;
-		String[] values = {"identify", "extract", "pack", "patch", "print", "exit"};
-		
-		if(input != null)
-			for(int i = 0; i < values.length; i++)
-				if(values[i].equalsIgnoreCase(input))
-					operation = values[i];
-		
-		if(operation == null) {
-		
-			String prompt = "\n" + Ansi.colorize("Operations", Attribute.BRIGHT_YELLOW_TEXT(), Attribute.BOLD()) + ":\n"
-					+ "- " + Ansi.colorize("Identify", Attribute.BRIGHT_RED_TEXT()) + " a package or audio file\n"
-					+ "- " + Ansi.colorize("Extract", Attribute.TEXT_COLOR(0xFF, 0x68, 0x1F)) + " audio tracks from a package (BIN -> WAV/XMA)\n"
-					+ "- " + Ansi.colorize("Convert", Attribute.TEXT_COLOR(0xFF, 0xEA, 0x00)) + " audio tracks to another format (XMA <-> WAV <-> FLAC)\n"
-					+ "- " + Ansi.colorize("Patch", Attribute.BRIGHT_GREEN_TEXT()) + " an audio track to repeat (WAV)\n"
-					+ "- " + Ansi.colorize("Pack", Attribute.BRIGHT_BLUE_TEXT()) + " audio tracks into a package (WAV/XMA -> BIN)\n"
-					+ "- " + Ansi.colorize("Print", Attribute.TEXT_COLOR(0x6B, 0x4C, 0xE3)) + " a Ridge Racer 6 style ASCII logo\n"
-					+ "- " + Ansi.colorize("Exit", Attribute.BRIGHT_MAGENTA_TEXT()) + " program\n"
-					+ "\nPlease select an operation: " + ANSI_BEIGE;
-			
-			operation = retrieveInput(reader, prompt, values);
-			
-			if(CMD_MODE) {
-				
-				Attribute color = null;
-				switch(operation.toLowerCase()) {
-					case "identify":
-						color = Attribute.BRIGHT_RED_TEXT();
-						break;
-					case "extract":
-						color = Attribute.TEXT_COLOR(0xFF, 0x68, 0x1F);
-						break;
-					case "convert":
-						color = Attribute.TEXT_COLOR(0xFF, 0xEA, 0x00);
-					case "patch":
-						color = Attribute.BRIGHT_GREEN_TEXT();
-						break;
-					case "pack":
-						color = Attribute.BRIGHT_BLUE_TEXT();
-						break;
-					case "print":
-						color = Attribute.TEXT_COLOR(0x6B, 0x4C, 0xE3);
-						break;
-					case "exit":
-						color = Attribute.BRIGHT_MAGENTA_TEXT();
-						break;
-				}
-				System.out.println(ANSI_BACKLINE + Ansi.colorize("Please select an operation: ") + Ansi.colorize(operation, color));
-				
-			} else System.out.print(Ansi.colorize(""));
-		
-		}
-		
-		return operation.toLowerCase();
-		
-	}
-	
 	/**
 	 * Helper function to prompt user to select a WAV file.
 	 * 
@@ -1923,4 +1967,34 @@ public class AudioExtractor {
 		
 	}
 	
+	/**
+	 * Helper method that converts a little-endian byte array into a long value.
+	 * 
+	 * @param bytes (up to 8 bytes)
+	 * @return value
+	 */
+	public static long littleEndianToLong(byte[] bytes) {
+		if(bytes.length > 8)
+			throw new IllegalArgumentException("Byte array must be 8 bytes or shorter.");
+		long value = 0;
+		for(int i = 0; i < bytes.length; i++)
+			value |= (long) (bytes[i] & 0xFF) << (8 * i);
+		return value;
+	}
+	
+	/**
+	 * Helper method that converts a little-endian byte array into a long value.
+	 * 
+	 * @param bytes (up to 8 bytes)
+	 * @return value
+	 */
+	public static int littleEndianToInt(byte[] bytes) {
+		if(bytes.length > 8)
+			throw new IllegalArgumentException("Byte array must be 4 bytes or shorter.");
+		int value = 0;
+		for(int i = 0; i < bytes.length; i++)
+			value |= (int) (bytes[i] & 0xFF) << (8 * i);
+		return value;
+	}
+	
 }