package com.google.zxing.qrcode.decoder;
+import com.google.zxing.ReaderException;
+
/**
* <p>See ISO 18004:2006, 6.5.1. This enum encapsulates the four error correction levels
* defined by the QR code standard.</p>
* @param bits int containing the two bits encoding a QR Code's error correction level
* @return {@link ErrorCorrectionLevel} representing the encoded error correction level
*/
- static ErrorCorrectionLevel forBits(int bits) {
+ static ErrorCorrectionLevel forBits(int bits) throws ReaderException {
+ if (bits < 0 || bits >= FOR_BITS.length) {
+ throw new ReaderException("Illegal error correction level bits" + bits);
+ }
return FOR_BITS[bits];
}
package com.google.zxing.qrcode.decoder;
+import com.google.zxing.ReaderException;
+
/**
* <p>Encapsulates a QR Code's format information, including the data mask used and
* error correction level.</p>
private final ErrorCorrectionLevel errorCorrectionLevel;
private final byte dataMask;
- private FormatInformation(int formatInfo) {
+ private FormatInformation(int formatInfo) throws ReaderException {
// Bits 3,4
errorCorrectionLevel = ErrorCorrectionLevel.forBits((formatInfo >> 3) & 0x03);
// Bottom 3 bits
* @param rawFormatInfo
* @return
*/
- static FormatInformation decodeFormatInformation(int rawFormatInfo) {
+ static FormatInformation decodeFormatInformation(int rawFormatInfo) throws ReaderException {
FormatInformation formatInfo = doDecodeFormatInformation(rawFormatInfo);
if (formatInfo != null) {
return formatInfo;
return doDecodeFormatInformation(rawFormatInfo ^ FORMAT_INFO_MASK_QR);
}
- private static FormatInformation doDecodeFormatInformation(int rawFormatInfo) {
+ private static FormatInformation doDecodeFormatInformation(int rawFormatInfo) throws ReaderException {
// Unmask:
int unmaskedFormatInfo = rawFormatInfo ^ FORMAT_INFO_MASK_QR;
// Find the int in FORMAT_INFO_DECODE_LOOKUP with fewest bits differing
+++ /dev/null
-/*
- * Copyright 2007 Google Inc.
- *
- * 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 junit.framework.TestCase;
-
-/**
- * @author srowen@google.com (Sean Owen)
- */
-public final class BitSourceTestCase extends TestCase {
-
- public void testSource() {
- byte[] bytes = new byte[]{(byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5};
- BitSource source = new BitSource(bytes);
- assertEquals(40, source.available());
- assertEquals(0, source.readBits(1));
- assertEquals(39, source.available());
- assertEquals(0, source.readBits(6));
- assertEquals(33, source.available());
- assertEquals(1, source.readBits(1));
- assertEquals(32, source.available());
- assertEquals(2, source.readBits(8));
- assertEquals(24, source.available());
- assertEquals(12, source.readBits(10));
- assertEquals(14, source.available());
- assertEquals(16, source.readBits(8));
- assertEquals(6, source.available());
- assertEquals(5, source.readBits(6));
- assertEquals(0, source.available());
- }
-
-}
\ No newline at end of file
--- /dev/null
+/*
+ * Copyright 2008 Google Inc.
+ *
+ * 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.ReaderException;
+import junit.framework.TestCase;
+
+/**
+ * @author srowen@google.com (Sean Owen)
+ */
+public final class ErrorCorrectionLevelTestCase extends TestCase {
+
+ public void testForBits() throws ReaderException {
+ assertEquals(ErrorCorrectionLevel.M, ErrorCorrectionLevel.forBits(0));
+ assertEquals(ErrorCorrectionLevel.L, ErrorCorrectionLevel.forBits(1));
+ assertEquals(ErrorCorrectionLevel.H, ErrorCorrectionLevel.forBits(2));
+ assertEquals(ErrorCorrectionLevel.Q, ErrorCorrectionLevel.forBits(3));
+ try {
+ ErrorCorrectionLevel.forBits(4);
+ fail("Should have thrown an exception");
+ } catch (ReaderException re) {
+ // good
+ }
+ }
+
+
+}
\ No newline at end of file
package com.google.zxing.qrcode.decoder;
+import com.google.zxing.ReaderException;
import junit.framework.TestCase;
/**
assertEquals(32, FormatInformation.numBitsDiffering(-1, 0));
}
- public void testDecode() {
+ public void testDecode() throws ReaderException {
// Normal case
FormatInformation expected = FormatInformation.decodeFormatInformation(0x2BED ^ 0x5412);
assertEquals((byte) 0x07, expected.getDataMask());
--- /dev/null
+/*
+ * Copyright 2008 Google Inc.
+ *
+ * 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.ReaderException;
+import junit.framework.TestCase;
+
+/**
+ * @author srowen@google.com (Sean Owen)
+ */
+public final class ModeTestCase extends TestCase {
+
+ public void testForBits() throws ReaderException {
+ assertEquals(Mode.TERMINATOR, Mode.forBits(0x00));
+ assertEquals(Mode.NUMERIC, Mode.forBits(0x01));
+ assertEquals(Mode.ALPHANUMERIC, Mode.forBits(0x02));
+ assertEquals(Mode.BYTE, Mode.forBits(0x04));
+ assertEquals(Mode.KANJI, Mode.forBits(0x08));
+ try {
+ Mode.forBits(0x10);
+ fail("Should have thrown an exception");
+ } catch (ReaderException re) {
+ // good
+ }
+ }
+
+ public void testCharacterCount() throws ReaderException {
+ // Spot check a few values
+ assertEquals(10, Mode.NUMERIC.getCharacterCountBits(Version.getVersionForNumber(5)));
+ assertEquals(12, Mode.NUMERIC.getCharacterCountBits(Version.getVersionForNumber(26)));
+ assertEquals(14, Mode.NUMERIC.getCharacterCountBits(Version.getVersionForNumber(40)));
+ assertEquals(9, Mode.ALPHANUMERIC.getCharacterCountBits(Version.getVersionForNumber(6)));
+ assertEquals(8, Mode.BYTE.getCharacterCountBits(Version.getVersionForNumber(7)));
+ assertEquals(8, Mode.KANJI.getCharacterCountBits(Version.getVersionForNumber(8)));
+ }
+
+}
\ No newline at end of file
--- /dev/null
+/*
+ * Copyright 2008 Google Inc.
+ *
+ * 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.ReaderException;
+import junit.framework.TestCase;
+
+/**
+ * @author srowen@google.com (Sean Owen)
+ */
+public final class VersionTestCase extends TestCase {
+
+ public void testVersionForNumber() throws ReaderException {
+ try {
+ Version.getVersionForNumber(0);
+ fail("Should have thrown an exception");
+ } catch (ReaderException re) {
+ // good
+ }
+ for (int i = 1; i <= 40; i++) {
+ checkVersion(Version.getVersionForNumber(i), i, 4*i + 17);
+ }
+ }
+
+ private static void checkVersion(Version version, int number, int dimension) {
+ assertNotNull(version);
+ assertEquals(number, version.getVersionNumber());
+ assertNotNull(version.getAlignmentPatternCenters());
+ if (number > 1) {
+ assertTrue(version.getAlignmentPatternCenters().length > 0);
+ }
+ assertEquals(dimension, version.getDimensionForVersion());
+ assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.H));
+ assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.L));
+ assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.M));
+ assertNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.Q));
+ assertNotNull(version.buildFunctionPattern());
+ }
+
+ public void testGetProvisionalVersionForDimension() throws ReaderException {
+ for (int i = 1; i <= 40; i++) {
+ assertEquals(i, Version.getProvisionalVersionForDimension(4*i + 17).getVersionNumber());
+ }
+ }
+
+ public void testDecodeVersionInformation() throws ReaderException {
+ // Spot check
+ assertEquals(7, Version.decodeVersionInformation(0x07C94).getVersionNumber());
+ assertEquals(12, Version.decodeVersionInformation(0x0C762).getVersionNumber());
+ assertEquals(17, Version.decodeVersionInformation(0x1145D).getVersionNumber());
+ assertEquals(22, Version.decodeVersionInformation(0x168C9).getVersionNumber());
+ assertEquals(27, Version.decodeVersionInformation(0x1B08E).getVersionNumber());
+ assertEquals(32, Version.decodeVersionInformation(0x209D5).getVersionNumber());
+ }
+
+}
\ No newline at end of file
projects / zxing.git / commitdiff