From ccb462e94fffea71649e93dd4d91ef3748f5c726 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Dominik=20Sch=C3=BCrmann?= Date: Mon, 6 Jan 2014 22:52:45 +0100 Subject: externalize zxing lib, fix gradle build --- .../zxing/qrcode/decoder/BitMatrixParser.java | 203 --------------------- 1 file changed, 203 deletions(-) delete mode 100644 OpenPGP-Keychain/src/com/google/zxing/qrcode/decoder/BitMatrixParser.java (limited to 'OpenPGP-Keychain/src/com/google/zxing/qrcode/decoder/BitMatrixParser.java') diff --git a/OpenPGP-Keychain/src/com/google/zxing/qrcode/decoder/BitMatrixParser.java b/OpenPGP-Keychain/src/com/google/zxing/qrcode/decoder/BitMatrixParser.java deleted file mode 100644 index 9d131a554..000000000 --- a/OpenPGP-Keychain/src/com/google/zxing/qrcode/decoder/BitMatrixParser.java +++ /dev/null @@ -1,203 +0,0 @@ -/* - * Copyright 2007 ZXing authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.google.zxing.qrcode.decoder; - -import com.google.zxing.FormatException; -import com.google.zxing.common.BitMatrix; - -/** - * @author Sean Owen - */ -final class BitMatrixParser { - - private final BitMatrix bitMatrix; - private Version parsedVersion; - private FormatInformation parsedFormatInfo; - - /** - * @param bitMatrix {@link BitMatrix} to parse - * @throws FormatException if dimension is not >= 21 and 1 mod 4 - */ - BitMatrixParser(BitMatrix bitMatrix) throws FormatException { - int dimension = bitMatrix.getHeight(); - if (dimension < 21 || (dimension & 0x03) != 1) { - throw FormatException.getFormatInstance(); - } - this.bitMatrix = bitMatrix; - } - - /** - *

Reads format information from one of its two locations within the QR Code.

- * - * @return {@link FormatInformation} encapsulating the QR Code's format info - * @throws FormatException if both format information locations cannot be parsed as - * the valid encoding of format information - */ - FormatInformation readFormatInformation() throws FormatException { - - if (parsedFormatInfo != null) { - return parsedFormatInfo; - } - - // Read top-left format info bits - int formatInfoBits1 = 0; - for (int i = 0; i < 6; i++) { - formatInfoBits1 = copyBit(i, 8, formatInfoBits1); - } - // .. and skip a bit in the timing pattern ... - formatInfoBits1 = copyBit(7, 8, formatInfoBits1); - formatInfoBits1 = copyBit(8, 8, formatInfoBits1); - formatInfoBits1 = copyBit(8, 7, formatInfoBits1); - // .. and skip a bit in the timing pattern ... - for (int j = 5; j >= 0; j--) { - formatInfoBits1 = copyBit(8, j, formatInfoBits1); - } - - // Read the top-right/bottom-left pattern too - int dimension = bitMatrix.getHeight(); - int formatInfoBits2 = 0; - int jMin = dimension - 7; - for (int j = dimension - 1; j >= jMin; j--) { - formatInfoBits2 = copyBit(8, j, formatInfoBits2); - } - for (int i = dimension - 8; i < dimension; i++) { - formatInfoBits2 = copyBit(i, 8, formatInfoBits2); - } - - parsedFormatInfo = FormatInformation.decodeFormatInformation(formatInfoBits1, formatInfoBits2); - if (parsedFormatInfo != null) { - return parsedFormatInfo; - } - throw FormatException.getFormatInstance(); - } - - /** - *

Reads version information from one of its two locations within the QR Code.

- * - * @return {@link Version} encapsulating the QR Code's version - * @throws FormatException if both version information locations cannot be parsed as - * the valid encoding of version information - */ - Version readVersion() throws FormatException { - - if (parsedVersion != null) { - return parsedVersion; - } - - int dimension = bitMatrix.getHeight(); - - int provisionalVersion = (dimension - 17) >> 2; - if (provisionalVersion <= 6) { - return Version.getVersionForNumber(provisionalVersion); - } - - // Read top-right version info: 3 wide by 6 tall - int versionBits = 0; - int ijMin = dimension - 11; - for (int j = 5; j >= 0; j--) { - for (int i = dimension - 9; i >= ijMin; i--) { - versionBits = copyBit(i, j, versionBits); - } - } - - parsedVersion = Version.decodeVersionInformation(versionBits); - if (parsedVersion != null && parsedVersion.getDimensionForVersion() == dimension) { - return parsedVersion; - } - - // Hmm, failed. Try bottom left: 6 wide by 3 tall - versionBits = 0; - for (int i = 5; i >= 0; i--) { - for (int j = dimension - 9; j >= ijMin; j--) { - versionBits = copyBit(i, j, versionBits); - } - } - - parsedVersion = Version.decodeVersionInformation(versionBits); - if (parsedVersion != null && parsedVersion.getDimensionForVersion() == dimension) { - return parsedVersion; - } - throw FormatException.getFormatInstance(); - } - - private int copyBit(int i, int j, int versionBits) { - return bitMatrix.get(i, j) ? (versionBits << 1) | 0x1 : versionBits << 1; - } - - /** - *

Reads the bits in the {@link BitMatrix} representing the finder pattern in the - * correct order in order to reconstitute the codewords bytes contained within the - * QR Code.

- * - * @return bytes encoded within the QR Code - * @throws FormatException if the exact number of bytes expected is not read - */ - byte[] readCodewords() throws FormatException { - - FormatInformation formatInfo = readFormatInformation(); - Version version = readVersion(); - - // Get the data mask for the format used in this QR Code. This will exclude - // some bits from reading as we wind through the bit matrix. - DataMask dataMask = DataMask.forReference((int) formatInfo.getDataMask()); - int dimension = bitMatrix.getHeight(); - dataMask.unmaskBitMatrix(bitMatrix, dimension); - - BitMatrix functionPattern = version.buildFunctionPattern(); - - boolean readingUp = true; - byte[] result = new byte[version.getTotalCodewords()]; - int resultOffset = 0; - int currentByte = 0; - int bitsRead = 0; - // Read columns in pairs, from right to left - for (int j = dimension - 1; j > 0; j -= 2) { - if (j == 6) { - // Skip whole column with vertical alignment pattern; - // saves time and makes the other code proceed more cleanly - j--; - } - // Read alternatingly from bottom to top then top to bottom - for (int count = 0; count < dimension; count++) { - int i = readingUp ? dimension - 1 - count : count; - for (int col = 0; col < 2; col++) { - // Ignore bits covered by the function pattern - if (!functionPattern.get(j - col, i)) { - // Read a bit - bitsRead++; - currentByte <<= 1; - if (bitMatrix.get(j - col, i)) { - currentByte |= 1; - } - // If we've made a whole byte, save it off - if (bitsRead == 8) { - result[resultOffset++] = (byte) currentByte; - bitsRead = 0; - currentByte = 0; - } - } - } - } - readingUp ^= true; // readingUp = !readingUp; // switch directions - } - if (resultOffset != version.getTotalCodewords()) { - throw FormatException.getFormatInstance(); - } - return result; - } - -} \ No newline at end of file -- cgit v1.2.3