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C# Tiff.ReadEncodedStrip方法代码示例

本文整理汇总了C#中BitMiracle.LibTiff.Classic.Tiff.ReadEncodedStrip方法的典型用法代码示例。如果您正苦于以下问题:C# Tiff.ReadEncodedStrip方法的具体用法?C# Tiff.ReadEncodedStrip怎么用?C# Tiff.ReadEncodedStrip使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在BitMiracle.LibTiff.Classic.Tiff的用法示例。


在下文中一共展示了Tiff.ReadEncodedStrip方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: readwrite_pdf_image

        /*
        This function reads the raster image data from the input TIFF for an image and writes 
        the data to the output PDF XObject image dictionary stream.  It returns the amount written 
        or zero on error.
        */
        private int readwrite_pdf_image(Tiff input)
        {
            byte[] buffer = null;
            int bufferoffset = 0;
            int stripcount = 0;
            int max_striplength = 0;
            FieldValue[] result = null;

            if (m_pdf_transcode == t2p_transcode_t.T2P_TRANSCODE_RAW)
            {
                if (m_pdf_compression == t2p_compress_t.T2P_COMPRESS_G4)
                {
                    buffer = new byte [m_tiff_datasize];
                    input.ReadRawStrip(0, buffer, 0, m_tiff_datasize);
                    if (m_tiff_fillorder == FillOrder.LSB2MSB)
                    {
                        /*
                        * make sure is lsb-to-msb
                        * bit-endianness fill order
                        */
                        Tiff.ReverseBits(buffer, m_tiff_datasize);
                    }
                    
                    writeToFile(buffer, m_tiff_datasize);
                    return m_tiff_datasize;
                }

                if (m_pdf_compression == t2p_compress_t.T2P_COMPRESS_ZIP)
                {
                    buffer = new byte [m_tiff_datasize];
                    input.ReadRawStrip(0, buffer, 0, m_tiff_datasize);
                    if (m_tiff_fillorder == FillOrder.LSB2MSB)
                        Tiff.ReverseBits(buffer, m_tiff_datasize);

                    writeToFile(buffer, m_tiff_datasize);
                    return m_tiff_datasize;
                }
                
                if (m_tiff_compression == Compression.JPEG)
                {
                    buffer = new byte [m_tiff_datasize];
                    result = input.GetField(TiffTag.JPEGTABLES);
                    if (result != null)
                    {
                        int count = result[0].ToInt();
                        byte[] jpt = result[1].ToByteArray();
                        if (count > 4)
                        {
                            Buffer.BlockCopy(jpt, 0, buffer, 0, count);
                            bufferoffset += count - 2;
                        }
                    }

                    stripcount = input.NumberOfStrips();
                    result = input.GetField(TiffTag.STRIPBYTECOUNTS);
                    int[] sbc = result[0].ToIntArray();
                    for (int i = 0; i < stripcount; i++)
                    {
                        if (sbc[i] > max_striplength)
                            max_striplength = sbc[i];
                    }
                    
                    byte[] stripbuffer = new byte [max_striplength];
                    for (int i = 0; i < stripcount; i++)
                    {
                        int striplength = input.ReadRawStrip(i, stripbuffer, 0, -1);
                        if (!process_jpeg_strip(stripbuffer, striplength, buffer, ref bufferoffset, stripcount, i, m_tiff_length))
                        {
                            Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
                                "Can't process JPEG data in input file {0}", input.FileName());
                            m_error = true;
                            return 0;
                        }
                    }

                    buffer[bufferoffset++] = 0xff;
                    buffer[bufferoffset++] = 0xd9;
                    writeToFile(buffer, bufferoffset);
                    return bufferoffset;
                }
            }

            int stripsize = 0;
            if (m_pdf_sample == t2p_sample_t.T2P_SAMPLE_NOTHING)
            {
                buffer = new byte [m_tiff_datasize];
                stripsize = input.StripSize();
                stripcount = input.NumberOfStrips();
                for (int i = 0; i < stripcount; i++)
                {
                    int read = input.ReadEncodedStrip(i, buffer, bufferoffset, stripsize);
                    if (read == -1)
                    {
                        Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
                            "Error on decoding strip {0} of {1}", i, input.FileName());
//.........这里部分代码省略.........
开发者ID:dronab,项目名称:libtiff.net,代码行数:101,代码来源:T2P.cs

示例2: cpDecodedStrips

        /*
         * Strip -> strip for change in encoding.
         */
        bool cpDecodedStrips(Tiff inImage, Tiff outImage, int imagelength, int imagewidth, short spp)
        {
            int stripsize = inImage.StripSize();
            byte[] buf = new byte[stripsize];
            int ns = inImage.NumberOfStrips();
            int row = 0;
            for (int s = 0; s < ns; s++)
            {
                int cc = (row + m_rowsperstrip > imagelength) ? inImage.VStripSize(imagelength - row) : stripsize;
                if (inImage.ReadEncodedStrip(s, buf, 0, cc) < 0 && !m_ignore)
                {
                    Tiff.Error(inImage.FileName(), "Error, can't read strip {0}", s);
                    return false;
                }

                if (outImage.WriteEncodedStrip(s, buf, cc) < 0)
                {
                    Tiff.Error(outImage.FileName(), "Error, can't write strip {0}", s);
                    return false;
                }

                row += m_rowsperstrip;
            }

            return true;
        }
开发者ID:XiBeichuan,项目名称:hydronumerics,代码行数:29,代码来源:Copier.cs

示例3: readStrip

 private static int readStrip(Tiff image, int stripNumber, byte[] buffer, int offset, bool encoded)
 {
     if (encoded)
         return image.ReadEncodedStrip(stripNumber, buffer, offset, buffer.Length - offset);
     else
         return image.ReadRawStrip(stripNumber, buffer, offset, buffer.Length - offset);
 }
开发者ID:dtegunov,项目名称:warp,代码行数:7,代码来源:Tiff.cs


注:本文中的BitMiracle.LibTiff.Classic.Tiff.ReadEncodedStrip方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。