--- /dev/null
+/*
+
+Copyright 1990, 1994, 1998 The Open Group
+
+All Rights Reserved.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+/* $XFree86: xc/lib/font/util/utilbitmap.c,v 1.3 1999/08/22 08:58:58 dawes Exp $ */
+
+/*
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+
+#include <ft2build.h>
+#include "pcfutil.h"
+
+
+ /* Utility functions for reformatting font bitmaps */
+
+ static const unsigned char _reverse_byte[0x100] =
+ {
+ 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+ 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+ 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+ 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+ 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+ 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+ 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+ 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+ 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+ 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+ 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+ 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+ 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+ 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+ 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+ 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+ 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+ 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+ 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+ 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+ 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+ 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+ 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+ 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+ 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+ 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+ 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+ 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+ 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+ 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+ 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+ 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
+ };
+
+ /*
+ * Invert bit order within each BYTE of an array.
+ */
+
+ void
+ BitOrderInvert( unsigned char* buf,
+ int nbytes )
+ {
+ const unsigned char* rev = _reverse_byte;
+
+
+ for ( ; --nbytes >= 0; buf++ )
+ *buf = rev[*buf];
+ }
+
+
+ /*
+ * Invert byte order within each 16-bits of an array.
+ */
+
+ void
+ TwoByteSwap( unsigned char* buf,
+ int nbytes )
+ {
+ unsigned char c;
+
+
+ for ( ; nbytes > 0; nbytes -= 2, buf += 2 )
+ {
+ c = buf[0];
+ buf[0] = buf[1];
+ buf[1] = c;
+ }
+ }
+
+ /*
+ * Invert byte order within each 32-bits of an array.
+ */
+
+ void
+ FourByteSwap( unsigned char* buf,
+ int nbytes )
+ {
+ unsigned char c;
+
+
+ for ( ; nbytes > 0; nbytes -= 4, buf += 4 )
+ {
+ c = buf[0];
+ buf[0] = buf[3];
+ buf[3] = c;
+
+ c = buf[1];
+ buf[1] = buf[2];
+ buf[2] = c;
+ }
+ }
+
+
+ /*
+ * Repad a bitmap.
+ */
+
+ int
+ RepadBitmap( char* pSrc,
+ char* pDst,
+ unsigned int srcPad,
+ unsigned int dstPad,
+ int width,
+ int height )
+ {
+ int srcWidthBytes, dstWidthBytes;
+ int row, col;
+ char *pTmpSrc, *pTmpDst;
+
+
+ switch ( srcPad )
+ {
+ case 1:
+ srcWidthBytes = ( width + 7 ) >> 3;
+ break;
+
+ case 2:
+ srcWidthBytes = ( ( width + 15 ) >> 4 ) << 1;
+ break;
+
+ case 4:
+ srcWidthBytes = ( ( width + 31 ) >> 5 ) << 2;
+ break;
+
+ case 8:
+ srcWidthBytes = ( ( width + 63 ) >> 6 ) << 3;
+ break;
+
+ default:
+ return 0;
+ }
+
+ switch ( dstPad )
+ {
+ case 1:
+ dstWidthBytes = ( width + 7 ) >> 3;
+ break;
+
+ case 2:
+ dstWidthBytes = ( ( width + 15 ) >> 4 ) << 1;
+ break;
+
+ case 4:
+ dstWidthBytes = ( ( width + 31 ) >> 5 ) << 2;
+ break;
+
+ case 8:
+ dstWidthBytes = ( ( width + 63 ) >> 6 ) << 3;
+ break;
+
+ default:
+ return 0;
+ }
+
+ width = srcWidthBytes;
+ if ( width > dstWidthBytes )
+ width = dstWidthBytes;
+
+ pTmpSrc= pSrc;
+ pTmpDst= pDst;
+
+ for ( row = 0; row < height; row++ )
+ {
+ for ( col = 0; col < width; col++ )
+ *pTmpDst++ = *pTmpSrc++;
+
+ while ( col < dstWidthBytes )
+ {
+ *pTmpDst++ = '\0';
+ col++;
+ }
+ pTmpSrc += srcWidthBytes - width;
+ }
+
+ return dstWidthBytes * height;
+ }
+
+
+/* END */
projects / rrdtool.git / blobdiff