1 /*****************************************************************************\
2 LidilCompress.cpp : Implementation of LidilCompress class
4 Copyright (c) 1996 - 2009, Hewlett-Packard Co.
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29 \*****************************************************************************/
31 #include "CommonDefinitions.h"
32 #include "LidilCompress.h"
34 UInt16 LidilCompress::FlushImage ()
47 from_ptr = m_image_ptr;
49 command = FILL_IMAGE_CMD | (wsize-1);
52 *m_out_ptr++ = command;
53 for (UInt16 i = 0; i < wsize; i++)
55 *m_out_ptr++ = *from_ptr++;
57 bsize = ((m_image_cnt+1) * 2);
66 UInt16 LidilCompress::FlushCopy (UInt16 value)
74 UInt16 *uP = m_out_ptr++;
78 command = FILL_0000_CMD | (m_copy_cnt-1);
80 else if (value == 0xFFFF)
82 command = FILL_FFFF_CMD | (m_copy_cnt-1);
86 command = FILL_NEXT_CMD | (m_copy_cnt-1);
98 void LidilCompress::CompressData (Int16 compressionmode)
107 LDLCOMPMODE mode = IN_NOT;
114 m_out_ptr = &m_out_array[8];
115 data_length = m_data_length;
117 if ((data_length & 1) != 0)
119 // ErrorTrap((char *)"Data length is odd.");
123 in_ptr = &m_raw_data[0];
125 for (i=0; i<data_length; i+=2)
133 /* default the first entry to 'image' */
135 m_image_ptr = in_ptr;
143 #if ALLOW_FILL_NEXT_CMD
146 if ((last == in) && ((in==0xFFFF) || (in == 0)) )
171 /* revisit - could allow 2 words of copy if the data is
174 /* convert a copy cnt of 2 to an image */
175 UInt16 copy_count = m_copy_cnt;
177 if (copy_count <= m_run_length)
179 if (m_image_cnt == 0)
181 /* point the pointer to the first element */
182 m_image_ptr = in_ptr - copy_count;
184 m_image_cnt += (1+copy_count);
189 /* have enough to be a legal copy */
191 (void) FlushImage ();
193 (void) FlushCopy (copy_item);
195 m_image_ptr = in_ptr;
206 #if ALLOW_FILL_NEXT_CMD
209 if ((last == in) && ((in==0xFFFF) || (in == 0)) )
232 } /* next data - end of processing */
234 /* flush out the remainder */
240 /* have enough to be a legal copy */
241 (void) FlushImage ();
243 (void) FlushCopy (copy_item);
249 (void) FlushImage ();
256 if (m_out_cnt > 2048+16)
258 // ErrorTrap("out cnt too big");
263 bool LidilCompress::GetFrameInfo (BYTE **outdata, UInt16 *data_size)
265 *outdata = (unsigned char *) &m_out_array[0];
266 *data_size = m_out_cnt;
270 bool LidilCompress::Init (UInt16 *data, UInt16 datasize)
274 m_data_length = datasize;
276 m_run_length = MAX_RUNLENGTH;