C# Version.getECBlocksForLevel方法代码示例

 private static void checkVersion(Version version, int number, int dimension)
 {
    Assert.IsNotNull(version);
    Assert.AreEqual(number, version.VersionNumber);
    Assert.IsNotNull(version.AlignmentPatternCenters);
    if (number > 1)
    {
       Assert.IsTrue(version.AlignmentPatternCenters.Length > 0);
    }
    Assert.AreEqual(dimension, version.DimensionForVersion);
    Assert.IsNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.H));
    Assert.IsNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.L));
    Assert.IsNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.M));
    Assert.IsNotNull(version.getECBlocksForLevel(ErrorCorrectionLevel.Q));
    Assert.IsNotNull(version.buildFunctionPattern());
 }

        /// <summary> <p>When QR Codes use multiple data blocks, they are actually interleaved.
        /// That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
        /// method will separate the data into original blocks.</p>
        /// 
        /// </summary>
        /// <param name="rawCodewords">bytes as read directly from the QR Code
        /// </param>
        /// <param name="version">version of the QR Code
        /// </param>
        /// <param name="ecLevel">error-correction level of the QR Code
        /// </param>
        /// <returns> {@link DataBlock}s containing original bytes, "de-interleaved" from representation in the
        /// QR Code
        /// </returns>
        internal static DataBlock[] getDataBlocks(sbyte[] rawCodewords, Version version, ErrorCorrectionLevel ecLevel)
        {
            if (rawCodewords.Length != version.TotalCodewords)
            {
                throw new System.ArgumentException();
            }

            // Figure out the number and size of data blocks used by this version and
            // error correction level
            Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);

            // First count the total number of data blocks
            int totalBlocks = 0;
            Version.ECB[] ecBlockArray = ecBlocks.getECBlocks();
            for (int i = 0; i < ecBlockArray.Length; i++)
            {
                totalBlocks += ecBlockArray[i].Count;
            }

            // Now establish DataBlocks of the appropriate size and number of data codewords
            DataBlock[] result = new DataBlock[totalBlocks];
            int numResultBlocks = 0;
            for (int j = 0; j < ecBlockArray.Length; j++)
            {
                Version.ECB ecBlock = ecBlockArray[j];
                for (int i = 0; i < ecBlock.Count; i++)
                {
                    int numDataCodewords = ecBlock.DataCodewords;
                    int numBlockCodewords = ecBlocks.ECCodewordsPerBlock + numDataCodewords;
                    result[numResultBlocks++] = new DataBlock(numDataCodewords, new sbyte[numBlockCodewords]);
                }
            }

            // All blocks have the same amount of data, except that the last n
            // (where n may be 0) have 1 more byte. Figure out where these start.
            int shorterBlocksTotalCodewords = result[0].codewords.Length;
            int longerBlocksStartAt = result.Length - 1;
            while (longerBlocksStartAt >= 0)
            {
                int numCodewords = result[longerBlocksStartAt].codewords.Length;
                if (numCodewords == shorterBlocksTotalCodewords)
                {
                    break;
                }
                longerBlocksStartAt--;
            }
            longerBlocksStartAt++;

            int shorterBlocksNumDataCodewords = shorterBlocksTotalCodewords - ecBlocks.ECCodewordsPerBlock;
            // The last elements of result may be 1 element longer;
            // first fill out as many elements as all of them have
            int rawCodewordsOffset = 0;
            for (int i = 0; i < shorterBlocksNumDataCodewords; i++)
            {
                for (int j = 0; j < numResultBlocks; j++)
                {
                    result[j].codewords[i] = rawCodewords[rawCodewordsOffset++];
                }
            }
            // Fill out the last data block in the longer ones
            for (int j = longerBlocksStartAt; j < numResultBlocks; j++)
            {
                result[j].codewords[shorterBlocksNumDataCodewords] = rawCodewords[rawCodewordsOffset++];
            }
            // Now add in error correction blocks
            int max = result[0].codewords.Length;
            for (int i = shorterBlocksNumDataCodewords; i < max; i++)
            {
                for (int j = 0; j < numResultBlocks; j++)
                {
                    int iOffset = j < longerBlocksStartAt?i:i + 1;
                    result[j].codewords[iOffset] = rawCodewords[rawCodewordsOffset++];
                }
            }
            return result;
        }