/// <summary>
 /// Base constructor.
 /// </summary>
 /// <param name="errorManager">The error manager.</param>
 /// <seealso cref="jpeg_compress_struct"/>
 /// <seealso cref="jpeg_decompress_struct"/>
 public jpeg_common_struct(jpeg_error_mgr errorManager)
 {
     Err = errorManager;
 }
 /// <summary>
 /// Initializes a new instance of the <see cref="jpeg_compress_struct"/> class.
 /// </summary>
 /// <param name="errorManager">The error manager.</param>
 public jpeg_compress_struct(jpeg_error_mgr errorManager)
     : base(errorManager)
 {
     initialize();
 }
Esempio n. 3
0
 /// <summary>
 /// Base constructor.
 /// </summary>
 /// <param name="errorManager">The error manager.</param>
 /// <seealso cref="jpeg_compress_struct"/>
 /// <seealso cref="jpeg_decompress_struct"/>
 public jpeg_common_struct(jpeg_error_mgr errorManager)
 {
     Err = errorManager;
 }
Esempio n. 4
0
 /// <summary>
 /// Base constructor.
 /// </summary>
 /// <param name="errorManager">The error manager.</param>
 /// <seealso cref="jpeg_compress_struct"/>
 /// <seealso cref="jpeg_decompress_struct"/>
 protected jpeg_common_struct(jpeg_error_mgr errorManager)
 {
     Err = errorManager;
 }
Esempio n. 5
0
        private void cleanState()
        {
            m_compression = null;
            m_decompression = null;
            m_common = null;

            m_h_sampling = 0;
            m_v_sampling = 0;

            m_jpegtables = null;
            m_jpegtables_length = 0;
            m_jpegquality = 0;
            m_jpegcolormode = 0;
            m_jpegtablesmode = 0;

            m_ycbcrsampling_fetched = false;

            m_recvparams = 0;
            m_subaddress = null;
            m_recvtime = 0;
            m_faxdcs = null;
            m_rawDecode = false;
            m_rawEncode = false;

            m_cinfo_initialized = false;

            m_err = null;
            m_photometric = 0;

            m_bytesperline = 0;
            m_ds_buffer = new byte[JpegConstants.MAX_COMPONENTS][][];
            m_scancount = 0;
            m_samplesperclump = 0;
        }
Esempio n. 6
0
        public override bool Init()
        {
            Debug.Assert(m_scheme == Compression.JPEG);

            /*
            * Merge codec-specific tag information and override parent get/set
            * field methods.
            */
            m_tif.MergeFieldInfo(jpegFieldInfo, jpegFieldInfo.Length);

            /*
             * Allocate state block so tag methods have storage to record values.
             */
            cleanState();
            m_err = new JpegErrorManager(this);

            m_parentTagMethods = m_tif.m_tagmethods;
            m_tif.m_tagmethods = m_tagMethods;

            /* Default values for codec-specific fields */
            m_jpegquality = 75; /* Default IJG quality */
            m_jpegcolormode = JpegColorMode.RGB;
            m_jpegtablesmode = JpegTablesMode.QUANT | JpegTablesMode.HUFF;

            m_tif.m_flags |= TiffFlags.NOBITREV; // no bit reversal, please

            /*
             ** Create a JPEGTables field if no directory has yet been created. 
             ** We do this just to ensure that sufficient space is reserved for
             ** the JPEGTables field.  It will be properly created the right
             ** size later. 
             */
            if (m_tif.m_diroff == 0)
            {
                const int SIZE_OF_JPEGTABLES = 2000;
                
                // The following line assumes incorrectly that all JPEG-in-TIFF
                // files will have a JPEGTABLES tag generated and causes
                // null-filled JPEGTABLES tags to be written when the JPEG data
                // is placed with WriteRawStrip. The field bit should be 
                // set, anyway, later when actual JPEGTABLES header is
                // generated, so removing it here hopefully is harmless.
                //
                //       m_tif.setFieldBit(FIELD_JPEGTABLES);
                //

                m_jpegtables_length = SIZE_OF_JPEGTABLES;
                m_jpegtables = new byte[m_jpegtables_length];
            }

            /*
             * Mark the YCBCRSAMPLES as present even if it is not
             * see: JPEGFixupTestSubsampling().
             */
            m_tif.setFieldBit(FieldBit.YCbCrSubsampling);
            return true;
        }
Esempio n. 7
0
        private void cleanState()
        {
            m_jpeg_interchange_format = 0;
            m_jpeg_interchange_format_length = 0;
            m_jpeg_proc = 0;

            m_subsamplingcorrect_done = false;
            m_subsampling_tag = false;
            m_subsampling_hor = 0;
            m_subsampling_ver = 0;

            m_qtable_offset_count = 0;
            m_dctable_offset_count = 0;
            m_actable_offset_count = 0;
            m_qtable_offset = new uint[3];
            m_dctable_offset = new uint[3];
            m_actable_offset = new uint[3];

            m_restart_interval = 0;

            m_libjpeg_jpeg_decompress_struct = null;

            m_file_size = 0;
            m_image_width = 0;
            m_image_length = 0;
            m_strile_width = 0;
            m_strile_length = 0;
            m_strile_length_total = 0;
            m_samples_per_pixel = 0;
            m_plane_sample_offset = 0;
            m_samples_per_pixel_per_plane = 0;
            m_subsamplingcorrect = false;
            m_subsampling_force_desubsampling_inside_decompression = false;
            m_qtable = new byte[4][];
            m_dctable = new byte[4][];
            m_actable = new byte[4][];
            m_restart_index = 0;
            m_sof_log = false;
            m_sof_marker_id = 0;
            m_sof_x = 0;
            m_sof_y = 0;
            m_sof_c = new byte[3];
            m_sof_hv = new byte[3];
            m_sof_tq = new byte[3];
            m_sos_cs = new byte[3];
            m_sos_tda = new byte[3];
            m_sos_end = new SosEnd[3];
            m_readheader_done = false;
            m_writeheader_done = false;
            m_write_cursample = 0;
            m_write_curstrile = 0;
            m_libjpeg_session_active = false;
            m_libjpeg_jpeg_query_style = 0;
            m_libjpeg_jpeg_error_mgr = null;
            m_libjpeg_jpeg_source_mgr = null;
            m_subsampling_convert_log = false;
            m_subsampling_convert_ylinelen = 0;
            m_subsampling_convert_ylines = 0;
            m_subsampling_convert_clinelen = 0;
            m_subsampling_convert_clines = 0;
            m_subsampling_convert_ybuf = null;
            m_subsampling_convert_cbbuf = null;
            m_subsampling_convert_crbuf = null;
            m_subsampling_convert_ycbcrimage = null;
            m_subsampling_convert_clinelenout = 0;
            m_subsampling_convert_state = 0;
            m_bytes_per_line = 0;
            m_lines_per_strile = 0;
            m_in_buffer_source = OJPEGStateInBufferSource.osibsNotSetYet;
            m_in_buffer_next_strile = 0;
            m_in_buffer_strile_count = 0;
            m_in_buffer_file_pos = 0;
            m_in_buffer_file_pos_log = false;
            m_in_buffer_file_togo = 0;
            m_in_buffer_togo = 0;
            m_in_buffer_cur = 0; // index into m_in_buffer
            m_in_buffer = new byte[OJPEG_BUFFER];
            m_out_state = 0;
            m_out_buffer = new byte[OJPEG_BUFFER];
            m_skip_buffer = null;
            m_forceProcessedRgbOutput = false;
        }
Esempio n. 8
0
        private bool OJPEGWriteHeaderInfo()
        {
            Debug.Assert(!m_libjpeg_session_active);

            m_out_state = OJPEGStateOutState.ososSoi;
            m_restart_index = 0;

            m_libjpeg_jpeg_error_mgr = new OJpegErrorManager(this);
            if (!jpeg_create_decompress_encap())
                return false;

            m_libjpeg_session_active = true;
            m_libjpeg_jpeg_source_mgr = new OJpegSrcManager(this);
            m_libjpeg_jpeg_decompress_struct.Src = m_libjpeg_jpeg_source_mgr;

            if (jpeg_read_header_encap(true) == ReadResult.JPEG_SUSPENDED)
                return false;

            if (!m_subsampling_force_desubsampling_inside_decompression && (m_samples_per_pixel_per_plane > 1))
            {
                m_libjpeg_jpeg_decompress_struct.Raw_data_out = true;
                m_libjpeg_jpeg_decompress_struct.Do_fancy_upsampling = false;

                //#if JPEG_LIB_VERSION >= 70
                //    libjpeg_jpeg_decompress_struct.do_fancy_upsampling=FALSE;
                //#endif
                m_libjpeg_jpeg_query_style = 0;
                if (!m_subsampling_convert_log)
                {
                    Debug.Assert(m_subsampling_convert_ybuf == null);
                    Debug.Assert(m_subsampling_convert_cbbuf == null);
                    Debug.Assert(m_subsampling_convert_crbuf == null);
                    Debug.Assert(m_subsampling_convert_ycbcrimage == null);

                    m_subsampling_convert_ylinelen = (uint)((m_strile_width + m_subsampling_hor * 8 - 1) / (m_subsampling_hor * 8) * m_subsampling_hor * 8);
                    m_subsampling_convert_ylines = (uint)(m_subsampling_ver * 8);
                    m_subsampling_convert_clinelen = m_subsampling_convert_ylinelen / m_subsampling_hor;
                    m_subsampling_convert_clines = 8;

                    m_subsampling_convert_ybuf = new byte[m_subsampling_convert_ylines][];
                    for (int i = 0; i < m_subsampling_convert_ylines; i++)
                        m_subsampling_convert_ybuf[i] = new byte[m_subsampling_convert_ylinelen];

                    m_subsampling_convert_cbbuf = new byte[m_subsampling_convert_clines][];
                    m_subsampling_convert_crbuf = new byte[m_subsampling_convert_clines][];
                    for (int i = 0; i < m_subsampling_convert_clines; i++)
                    {
                        m_subsampling_convert_cbbuf[i] = new byte[m_subsampling_convert_clinelen];
                        m_subsampling_convert_crbuf[i] = new byte[m_subsampling_convert_clinelen];
                    }

                    m_subsampling_convert_ycbcrimage = new byte[3][][];
                    m_subsampling_convert_ycbcrimage[0] = new byte[m_subsampling_convert_ylines][];
                    for (uint n = 0; n < m_subsampling_convert_ylines; n++)
                        m_subsampling_convert_ycbcrimage[0][n] = m_subsampling_convert_ybuf[n];

                    m_subsampling_convert_ycbcrimage[1] = new byte[m_subsampling_convert_clines][];
                    for (uint n = 0; n < m_subsampling_convert_clines; n++)
                        m_subsampling_convert_ycbcrimage[1][n] = m_subsampling_convert_cbbuf[n];

                    m_subsampling_convert_ycbcrimage[2] = new byte[m_subsampling_convert_clines][];
                    for (uint n = 0; n < m_subsampling_convert_clines; n++)
                        m_subsampling_convert_ycbcrimage[2][n] = m_subsampling_convert_crbuf[n];

                    m_subsampling_convert_clinelenout = ((m_strile_width + m_subsampling_hor - 1) / m_subsampling_hor);
                    m_subsampling_convert_state = 0;
                    m_bytes_per_line = (uint)(m_subsampling_convert_clinelenout * (m_subsampling_ver * m_subsampling_hor + 2));
                    m_lines_per_strile = ((m_strile_length + m_subsampling_ver - 1) / m_subsampling_ver);
                    m_subsampling_convert_log = true;
                }
            }
            else
            {
                if (m_forceProcessedRgbOutput)
                {
                    m_libjpeg_jpeg_decompress_struct.Do_fancy_upsampling = false;
                    m_libjpeg_jpeg_decompress_struct.Jpeg_color_space = J_COLOR_SPACE.JCS_YCbCr;
                    m_libjpeg_jpeg_decompress_struct.Out_color_space = J_COLOR_SPACE.JCS_RGB;
                }
                else
                {
                    m_libjpeg_jpeg_decompress_struct.Jpeg_color_space = J_COLOR_SPACE.JCS_UNKNOWN;
                    m_libjpeg_jpeg_decompress_struct.Out_color_space = J_COLOR_SPACE.JCS_UNKNOWN;
                }

                m_libjpeg_jpeg_query_style = 1;
                m_bytes_per_line = m_samples_per_pixel_per_plane * m_strile_width;
                m_lines_per_strile = m_strile_length;
            }

            if (!jpeg_start_decompress_encap())
                return false;

            m_writeheader_done = true;
            return true;
        }