diff options
Diffstat (limited to 'nx-X11/programs/Xserver/Xprint/ps/PsImageUtil.c')
| -rw-r--r-- | nx-X11/programs/Xserver/Xprint/ps/PsImageUtil.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/Xprint/ps/PsImageUtil.c b/nx-X11/programs/Xserver/Xprint/ps/PsImageUtil.c new file mode 100644 index 000000000..282786564 --- /dev/null +++ b/nx-X11/programs/Xserver/Xprint/ps/PsImageUtil.c @@ -0,0 +1,329 @@ + +/* $Xorg: PsImageUtil.c,v 1.1 2005/03/25 1:19:56 gisburn Exp $ */ +/* +Copyright (c) 2005 Roland Mainz <roland.mainz@nrubsig.org> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +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 +COPYRIGHT HOLDERS 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 names of the copyright holders shall +not be used in advertising or otherwise to promote the sale, use or other +dealings in this Software without prior written authorization from said +copyright holders. +*/ + +/* Please do not beat me for this ugly code - most of it has been stolen from + * xc/lib/X11/ImUtil.c */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "gcstruct.h" +#include "windowstr.h" +#include "servermd.h" +#include "attributes.h" + +static unsigned char const _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 +}; + +static +int XReverse_Bytes( + register unsigned char *bpt, + register int nb) +{ + do { + *bpt = _reverse_byte[*bpt]; + bpt++; + } while (--nb > 0); + return 0; +} + +/* + * Data structure for "image" data, used by image manipulation routines. + */ +typedef struct { + int width, height; /* size of image */ + int xoffset; /* number of pixels offset in X direction */ + int format; /* XYBitmap, XYPixmap, ZPixmap */ + char *data; /* pointer to image data */ + int byte_order; /* data byte order, LSBFirst, MSBFirst */ + int bitmap_unit; /* quant. of scanline 8, 16, 32 */ + int bitmap_bit_order; /* LSBFirst, MSBFirst */ + int depth; /* depth of image */ + int bytes_per_line; /* accelarator to next line */ + int bits_per_pixel; /* bits per pixel (ZPixmap) */ +} TmpImage; + + +static void xynormalizeimagebits ( + register unsigned char *bp, + register TmpImage *img) +{ + register unsigned char c; + + if (img->byte_order != img->bitmap_bit_order) { + switch (img->bitmap_unit) { + + case 16: + c = *bp; + *bp = *(bp + 1); + *(bp + 1) = c; + break; + + case 32: + c = *(bp + 3); + *(bp + 3) = *bp; + *bp = c; + c = *(bp + 2); + *(bp + 2) = *(bp + 1); + *(bp + 1) = c; + break; + } + } + if (img->bitmap_bit_order == MSBFirst) + XReverse_Bytes (bp, img->bitmap_unit >> 3); +} + +static void znormalizeimagebits ( + register unsigned char *bp, + register TmpImage *img) +{ + register unsigned char c; + switch (img->bits_per_pixel) { + + case 4: + *bp = ((*bp >> 4) & 0xF) | ((*bp << 4) & ~0xF); + break; + + case 16: + c = *bp; + *bp = *(bp + 1); + *(bp + 1) = c; + break; + + case 24: + c = *(bp + 2); + *(bp + 2) = *bp; + *bp = c; + break; + + case 32: + c = *(bp + 3); + *(bp + 3) = *bp; + *bp = c; + c = *(bp + 2); + *(bp + 2) = *(bp + 1); + *(bp + 1) = c; + break; + } +} + +/* + * Macros + * + * The ROUNDUP macro rounds up a quantity to the specified boundary, + * then truncates to bytes. + * + * The XYNORMALIZE macro determines whether XY format data requires + * normalization and calls a routine to do so if needed. The logic in + * this module is designed for LSBFirst byte and bit order, so + * normalization is done as required to present the data in this order. + * + * The ZNORMALIZE macro performs byte and nibble order normalization if + * required for Z format data. + * + * The XYINDEX macro computes the index to the starting byte (char) boundary + * for a bitmap_unit containing a pixel with coordinates x and y for image + * data in XY format. + * + * The ZINDEX macro computes the index to the starting byte (char) boundary + * for a pixel with coordinates x and y for image data in ZPixmap format. + * + */ + +#if defined(Lynx) && defined(ROUNDUP) +#undef ROUNDUP +#endif + +#define ROUNDUP(nbytes, pad) ((((nbytes) + ((pad)-1)) / (pad)) * ((pad)>>3)) + +#define XYNORMALIZE(bp, img) \ + if ((img->byte_order == MSBFirst) || (img->bitmap_bit_order == MSBFirst)) \ + xynormalizeimagebits((unsigned char *)(bp), img) + +#define ZNORMALIZE(bp, img) \ + if (img->byte_order == MSBFirst) \ + znormalizeimagebits((unsigned char *)(bp), img) + +#define XYINDEX(x, y, img) \ + ((y) * img->bytes_per_line) + \ + (((x) + img->xoffset) / img->bitmap_unit) * (img->bitmap_unit >> 3) + +#define ZINDEX(x, y, img) ((y) * img->bytes_per_line) + \ + (((x) * img->bits_per_pixel) >> 3) + +/* + * GetPixel + * + * Returns the specified pixel. The X and Y coordinates are relative to + * the origin (upper left [0,0]) of the image. The pixel value is returned + * in normalized format, i.e. the LSB of the long is the LSB of the pixel. + * The algorithm used is: + * + * copy the source bitmap_unit or Zpixel into temp + * normalize temp if needed + * extract the pixel bits into return value + * + */ + +static unsigned long const low_bits_table[] = { + 0x00000000, 0x00000001, 0x00000003, 0x00000007, + 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f, + 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff, + 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, + 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff, + 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff, + 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff, + 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff, + 0xffffffff +}; + +static unsigned long XGetPixel (TmpImage *ximage, int x, int y) +{ + unsigned long pixel, px; + register char *src; + register char *dst; + register int i, j; + int bits, nbytes; + long plane; + + if ((ximage->bits_per_pixel | ximage->depth) == 1) { + src = &ximage->data[XYINDEX(x, y, ximage)]; + dst = (char *)&pixel; + pixel = 0; + for (i = ximage->bitmap_unit >> 3; --i >= 0; ) *dst++ = *src++; + XYNORMALIZE(&pixel, ximage); + bits = (x + ximage->xoffset) % ximage->bitmap_unit; + pixel = ((((char *)&pixel)[bits>>3])>>(bits&7)) & 1; + } else if (ximage->format == XYPixmap) { + pixel = 0; + plane = 0; + nbytes = ximage->bitmap_unit >> 3; + for (i = ximage->depth; --i >= 0; ) { + src = &ximage->data[XYINDEX(x, y, ximage)+ plane]; + dst = (char *)&px; + px = 0; + for (j = nbytes; --j >= 0; ) *dst++ = *src++; + XYNORMALIZE(&px, ximage); + bits = (x + ximage->xoffset) % ximage->bitmap_unit; + pixel = (pixel << 1) | + (((((char *)&px)[bits>>3])>>(bits&7)) & 1); + plane = plane + (ximage->bytes_per_line * ximage->height); + } + } else if (ximage->format == ZPixmap) { + src = &ximage->data[ZINDEX(x, y, ximage)]; + dst = (char *)&px; + px = 0; + for (i = (ximage->bits_per_pixel + 7) >> 3; --i >= 0; ) + *dst++ = *src++; + ZNORMALIZE(&px, ximage); + pixel = 0; + for (i=sizeof(unsigned long); --i >= 0; ) + pixel = (pixel << 8) | ((unsigned char *)&px)[i]; + if (ximage->bits_per_pixel == 4) { + if (x & 1) + pixel >>= 4; + else + pixel &= 0xf; + } + } else { + return 0; /* bad image */ + } + if (ximage->bits_per_pixel == ximage->depth) + return pixel; + else + return (pixel & low_bits_table[ximage->depth]); +} + +unsigned long +PsGetImagePixel(char *pImage, int depth, int w, int h, int leftPad, int format, + int px, int py) +{ + TmpImage xi = {0}; + + xi.width = w; + xi.height = h; + xi.xoffset = 0/*leftPad*/; + xi.format = format; + xi.data = pImage; + xi.byte_order = IMAGE_BYTE_ORDER; + xi.bitmap_bit_order = BITMAP_BIT_ORDER; + xi.bitmap_unit = ((depth > 16)?(32): + ((depth > 8)?(16): + ((depth > 1)? (8): + (1)))); + xi.depth = depth; + xi.bits_per_pixel = xi.bitmap_unit; + + /* + * compute per line accelerator. + */ + if (format == ZPixmap) + xi.bytes_per_line = + ROUNDUP((xi.bits_per_pixel * xi.width), 32); + else + xi.bytes_per_line = + ROUNDUP((xi.width + xi.xoffset), 32); + + return XGetPixel(&xi, px, py); +} + + + |