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- /* SUN version of portable bit-blt code. (S. A. Uhler)
- * The data on each line is padded to (BITS+1) bits
- */
-
- #ifdef sun
- # include <sys/ioctl.h>
- # include <sun/fbio.h>
- # include <sys/file.h>
- # include <sys/mman.h>
- #endif
- #ifdef atarist
- # include <linea.h>
- # include <osbind.h>
- char *_scrnbase;
- int _scrwidth, _scrheight, _scrplanes;
- short *Ptsin, *Intin;
- short _ptsin[10], _intsin[10];
- #endif
-
- #include <stdio.h>
- #include "bitmap.h"
-
- #define dprintf if(bit_debug)fprintf
- int bit_debug;
- static int _s_start; /* for our "vfree" */
- static _s_len;
-
- /* open the display; it looks like memory */
-
- BITMAP *
- bit_open(name)
- char *name; /* name of frame buffer */
- {
- BITMAP *result = BIT_NULL;
- #ifdef sun
- int fd; /* file descriptor of frame buffer */
- register DATA *addr; /* address of frame buffer */
- struct fbtype buff; /* frame buffer parameters */
- int pagesize;
- char *malloc();
-
- /* open the SUN display */
-
- if ((fd = open(name, O_RDWR)) < 0)
- return (BIT_NULL);
-
- /* get the frame buffer size */
-
- if (ioctl(fd, FBIOGTYPE, &buff) < 0)
- return (BIT_NULL);
-
- /* malloc space for frame buffer */
-
- pagesize = getpagesize();
- if ((_s_start = (int) malloc(buff.fb_size + pagesize)) == 0)
- return (BIT_NULL);
-
- /* align space (and fb size) on a page boundary */
-
- buff.fb_size = (buff.fb_size+pagesize-1) &~ (pagesize-1);
- addr = (DATA *) ((_s_start + pagesize - 1) & ~(pagesize - 1));
-
- /* map the frame buffer into malloc'd space */
-
- #ifdef _MAP_NEW /* New semantics for mmap in Sun release 4.0 */
- addr = (DATA) mmap(addr, _s_len=buff.fb_size,
- PROT_READ|PROT_WRITE, _MAP_NEW|MAP_SHARED, fd, 0);
- if ((int)addr == -1)
- return (BIT_NULL);
- #else
- if (mmap(addr, _s_len = buff.fb_size, PROT_WRITE, MAP_SHARED, fd, 0) < 0)
- return (BIT_NULL);
- #endif
-
- if ((result = (BITMAP *) malloc(sizeof(BITMAP))) == (BITMAP *) 0)
- return (BIT_NULL);
-
- result->primary = result;
- result->data = addr;
- result->x0 = 0,
- result->y0 = 0,
- result->wide = buff.fb_width;
- result->high = buff.fb_height;
- result->type = _SCREEN;
- #endif sun
- #ifdef atarist
- extern void *malloc();
-
- if ((result = (BITMAP *) malloc(sizeof(BITMAP))) == (BITMAP *) 0)
- return (BIT_NULL);
-
- result->primary = result;
-
- linea0();
-
- Intin = __aline->_INTIN;
- if (!Intin) {
- __aline->_INTIN = Intin = _intsin;
- }
- Ptsin = __aline->_PTSIN;
- if (!Ptsin) {
- __aline->_PTSIN = Ptsin = _ptsin;
- }
- _scrplanes = __aline->_VPLANES;
- _scrheight = V_Y_MAX;
- _scrwidth = V_X_MAX;
-
- result->data = Logbase();
-
- result->x0 = 0;
- result->y0 = 0;
- result->wide = _scrwidth;
- result->high = _scrheight;
- result->type = _SCREEN;
- #endif atarist
- return (result);
- }
-
- /* destroy a bitmap, free up space */
-
- int
- bit_destroy(bitmap)
- BITMAP *bitmap;
- {
- if (bitmap == (BITMAP *) 0)
- return (-1);
-
- if (IS_MEMORY(bitmap) && IS_PRIMARY(bitmap))
- free(bitmap->data);
- #ifndef atarist
- else if (IS_SCREEN(bitmap) && IS_PRIMARY(bitmap)) {
- munmap(BIT_DATA(bitmap), _s_len);
- free(_s_start);
- }
- #endif
- free(bitmap);
- return (0);
- }
-
- /* create a bitmap as a sub-rectangle of another bitmap */
-
- BITMAP *
- bit_create(map, x, y, wide, high)
- BITMAP *map;
- int x, y, wide, high;
- {
- char *malloc();
- register BITMAP *result;
-
- if (x + wide > map->wide)
- wide = map->wide - x;
- if (y + high > map->high)
- high = map->high - y;
- if (wide < 1 || high < 1)
- return (BIT_NULL);
-
- if ((result = (BITMAP *) malloc(sizeof(BITMAP))) == (BITMAP *) 0)
- return (BIT_NULL);
-
- result->data = map->data;
- result->x0 = map->x0 + x;
- result->y0 = map->y0 + y;
- result->wide = wide;
- result->high = high;
- result->primary = map->primary;
- result->type = map->type;
- return (result);
- }
-
- /* allocate space for, and create a memory bitmap */
-
- BITMAP *
- bit_alloc(wide, high, data, bits)
- unsigned short wide, high;
- DATA *data;
- int bits; /* in preparation for color */
- {
- char *malloc();
- register BITMAP *result;
- register int size;
-
- if ((result = (BITMAP *) malloc(sizeof(BITMAP))) == (BITMAP *) 0)
- return (result);
-
- result->x0 = 0;
- result->y0 = 0;
- result->high = high;
- result->wide = wide;
-
- size = ((wide+BITS)/8) * high;
-
- if (data != (DATA *) 0) { /* point to user supplied data */
- result->data = data;
-
- /* convert from external to internal format (if required) */
-
- if (DOFLIP) {
- flip(data,size/sizeof(DATA));
- }
- }
- else { /* malloc space: better be DATA aligned */
- if ((result->data = (DATA *) malloc(size)) == (DATA *) 0) {
- free(result);
- return ((BITMAP *) 0);
- }
- bzero(result->data,size);
- }
-
- #ifdef atarist
- if ((int) result->data & 1)
- fprintf(stderr,"bit_alloc(): boundary alignment error\n");
- #else
- if ((int) result->data &3)
- fprintf(stderr,"bit_alloc(): boundary alignment error\n");
- #endif
-
- result->primary = result;
- result->type = _MEMORY;
- return (result);
- }
-
- /* flip the bit order on count elements of s */
-
- static unsigned char flp[256] = {
- 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,
- };
-
- /*
- * Convert from external to internal bitmap format. Internal format
- * is SUN-3 bit order, 1=black, 0=white. This sample flip routine is
- * for the DEC3100, where 1=white, 0=black, and the bits in every byte
- * are revered
- */
-
- int
- flip(s,count,how)
- register DATA *s;
- register int count;
- int how; /* not used */
- {
- while (count-- > 0)
- *s++ = ~((flp[*s&0xff]) | (flp[*s>>8&0xff]<<8) |
- (flp[*s>>16&0xff]<<16) | (flp[*s>>24&0xff]<<24));
- }
-