ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /libfreetype/pcfutil.c/
/* 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 */