package com.google.zxing.qrcode.encoder;
import com.google.zxing.common.ByteMatrix;
-import com.google.zxing.WriterException;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+import com.google.zxing.qrcode.decoder.Mode;
/**
* @author satorux@google.com (Satoru Takabayashi) - creator
private static final int MAX_MATRIX_WIDTH = 177; // Version 40 (21 + 4 * (40 -1)).
public static final int NUM_MASK_PATTERNS = 8;
- // See table 3 of JISX0510:2004 (p.16)
- private static final int[][] NUM_BITS_TABLE = {
- // NUMERIC ALPHANUMERIC 8BIT_BYTE KANJI
- { 10, 9, 8, 8 }, // Version 1-9
- { 12, 11, 16, 10 }, // Version 10-26
- { 14, 13, 16, 12 }, // Version 27-40
- };
-
- private int mode;
+ private Mode mode;
private ErrorCorrectionLevel ecLevel;
private int version;
private int matrixWidth;
private int numRSBlocks;
private ByteMatrix matrix;
-
- // They call encoding "mode". The modes are defined in 8.3 of JISX0510:2004 (p.14). It's unlikely
- // (probably we will not support complicated modes) but if you add an item to this, please also
- // add it to modeToString(), getModeCode(), getNumBitsForLength(), Encoder.appendBytes(), and
- // Encoder.chooseMode().
- //
- // JAVAPORT: These used to be C++ enums, but the code evaluates them as integers, and requires
- // negative values. I don't want to take the ParsedResultType approach of a class full of statics
- // of that class's type. The best compromise here is integer constants.
- //
- // Formerly enum Mode
- public static final int MODE_UNDEFINED = -1;
- public static final int MODE_NUMERIC = 0;
- public static final int MODE_ALPHANUMERIC = 1;
- public static final int MODE_8BIT_BYTE = 2;
- public static final int MODE_KANJI = 3; // Shift_JIS
- // The following modes are unimplemented.
- // MODE_ECI,
- // MODE_MIXED,
- // MODE_CONCATENATED,
- // MODE_FNC1,
- public static final int NUM_MODES = 4;
-
public QRCode() {
- mode = MODE_UNDEFINED;
+ mode = null;
ecLevel = null;
version = -1;
matrixWidth = -1;
}
// Mode of the QR Code.
- public int getMode() {
+ public Mode getMode() {
return mode;
}
// Checks all the member variables are set properly. Returns true on success. Otherwise, returns
// false.
public boolean isValid() {
- return (
+ return
// First check if all version are not uninitialized.
- mode != MODE_UNDEFINED &&
- ecLevel != null &&
- version != -1 &&
- matrixWidth != -1 &&
- maskPattern != -1 &&
- numTotalBytes != -1 &&
- numDataBytes != -1 &&
- numECBytes != -1 &&
- numRSBlocks != -1 &&
- // Then check them in other ways..
- isValidVersion(version) &&
- isValidMode(mode) &&
- isValidMatrixWidth(matrixWidth) &&
- isValidMaskPattern(maskPattern) &&
- numTotalBytes == numDataBytes + numECBytes &&
- // ByteMatrix stuff.
- matrix != null &&
- matrixWidth == matrix.width() &&
- // See 7.3.1 of JISX0510:2004 (p.5).
- matrixWidth == MIN_MATRIX_WIDTH + (version - 1) * 4 &&
- matrix.width() == matrix.height()); // Must be square.
+ mode != null &&
+ ecLevel != null &&
+ version != -1 &&
+ matrixWidth != -1 &&
+ maskPattern != -1 &&
+ numTotalBytes != -1 &&
+ numDataBytes != -1 &&
+ numECBytes != -1 &&
+ numRSBlocks != -1 &&
+ // Then check them in other ways..
+ isValidVersion(version) &&
+ isValidMatrixWidth(matrixWidth) &&
+ isValidMaskPattern(maskPattern) &&
+ numTotalBytes == numDataBytes + numECBytes &&
+ // ByteMatrix stuff.
+ matrix != null &&
+ matrixWidth == matrix.width() &&
+ // See 7.3.1 of JISX0510:2004 (p.5).
+ matrixWidth == MIN_MATRIX_WIDTH + (version - 1) * 4 &&
+ matrix.width() == matrix.height(); // Must be square.
}
// Return debug String.
StringBuffer result = new StringBuffer();
result.append("<<\n");
result.append(" mode: ");
- result.append(modeToString(mode));
+ result.append(mode);
result.append("\n ecLevel: ");
result.append(ecLevel);
result.append("\n version: ");
return result.toString();
}
- public void setMode(int value) {
+ public void setMode(Mode value) {
mode = value;
}
return version >= MIN_VERSION && version <= MAX_VERSION;
}
- // Check if "mode" is valid.
- public static boolean isValidMode(final int mode) {
- return mode >= 0 && mode < NUM_MODES;
- }
-
// Check if "width" is valid.
public static boolean isValidMatrixWidth(int width) {
return width >= MIN_MATRIX_WIDTH && width <= MAX_MATRIX_WIDTH;
return maskPattern >= 0 && maskPattern < NUM_MASK_PATTERNS;
}
- // Convert "mode" to String for debugging.
- public static String modeToString(int mode) {
- switch (mode) {
- case QRCode.MODE_UNDEFINED:
- return "UNDEFINED";
- case QRCode.MODE_NUMERIC:
- return "NUMERIC";
- case QRCode.MODE_ALPHANUMERIC:
- return "ALPHANUMERIC";
- case QRCode.MODE_8BIT_BYTE:
- return "8BIT_BYTE";
- case QRCode.MODE_KANJI:
- return "KANJI";
- default:
- break;
- }
- return "UNKNOWN";
- }
-
- // Return the code of mode. On error, return -1. The codes of modes are defined in the table 2 of
- // JISX0510:2004 (p.16).
- public static int getModeCode(final int mode) throws WriterException {
- switch (mode) {
- case QRCode.MODE_NUMERIC:
- return 1;
- case QRCode.MODE_ALPHANUMERIC:
- return 2;
- case QRCode.MODE_8BIT_BYTE:
- return 4;
- case QRCode.MODE_KANJI:
- return 8;
- default:
- throw new WriterException("Unknown mode: " + mode);
- }
- }
-
- // Return the number of bits needed for representing the length info of QR Code with "version" and
- // "mode". On error, return -1.
- static int getNumBitsForLength(int version, int mode) {
- if (!isValidVersion(version)) {
- throw new IllegalArgumentException("Invalid version: " + version);
- }
- if (!isValidMode(mode)) {
- throw new IllegalArgumentException("Invalid mode: " + mode);
- }
- if (version >= 1 && version <= 9) {
- return NUM_BITS_TABLE[0][mode];
- } else if (version >= 10 && version <= 26) {
- return NUM_BITS_TABLE[1][mode];
- } else if (version >= 27 && version <= 40) {
- return NUM_BITS_TABLE[2][mode];
- }
- throw new IllegalArgumentException("Bad version: " + version);
- }
-
// Return true if the all values in the matrix are binary numbers.
//
// JAVAPORT: This is going to be super expensive and unnecessary, we should not call this in
projects / zxing.git / blobdiff