Annotation of sys/dev/rasops/rasops.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: rasops.h,v 1.8 2006/11/29 19:08:22 miod Exp $ */
! 2: /* $NetBSD: rasops.h,v 1.13 2000/06/13 13:36:54 ad Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Andrew Doran.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #ifndef _RASOPS_H_
! 41: #define _RASOPS_H_ 1
! 42:
! 43: #ifdef SMALL_KERNEL
! 44: #define RASOPS_SMALL
! 45: #endif
! 46:
! 47: #include "rasops_glue.h"
! 48:
! 49: struct wsdisplay_font;
! 50:
! 51: /* For rasops_info::ri_flg */
! 52: #define RI_FULLCLEAR 0x0001 /* eraserows() hack to clear full screen */
! 53: #define RI_FORCEMONO 0x0002 /* monochrome output even if we can do color */
! 54: #define RI_BSWAP 0x0004 /* framebuffer endianness doesn't match CPU */
! 55: #define RI_CURSOR 0x0008 /* cursor is switched on */
! 56: #define RI_CLEAR 0x0010 /* clear display on startup */
! 57: #define RI_CLEARMARGINS 0x0020 /* clear display margins on startup */
! 58: #define RI_CENTER 0x0040 /* center onscreen output */
! 59: #define RI_CURSORCLIP 0x0080 /* cursor is currently clipped */
! 60: #define RI_ROTATE_CW 0x0100 /* display is rotated, quarter clockwise */
! 61: #define RI_CFGDONE 0x0200 /* rasops_reconfig() completed successfully */
! 62:
! 63: struct rasops_info {
! 64: /* These must be filled in by the caller */
! 65: int ri_depth; /* depth in bits */
! 66: u_char *ri_bits; /* ptr to bits */
! 67: int ri_width; /* width (pels) */
! 68: int ri_height; /* height (pels) */
! 69: int ri_stride; /* stride in bytes */
! 70:
! 71: /*
! 72: * These can optionally be left zeroed out. If you fill ri_font,
! 73: * but aren't using wsfont, set ri_wsfcookie to -1.
! 74: */
! 75: struct wsdisplay_font *ri_font;
! 76: int ri_wsfcookie; /* wsfont cookie */
! 77: void *ri_hw; /* driver private data; ignored by rasops */
! 78: int ri_crow; /* cursor row */
! 79: int ri_ccol; /* cursor column */
! 80: int ri_flg; /* various operational flags */
! 81:
! 82: /*
! 83: * These are optional and will default if zero. Meaningless
! 84: * on depths other than 15, 16, 24 and 32 bits per pel. On
! 85: * 24 bit displays, ri_{r,g,b}num must be 8.
! 86: */
! 87: u_char ri_rnum; /* number of bits for red */
! 88: u_char ri_gnum; /* number of bits for green */
! 89: u_char ri_bnum; /* number of bits for blue */
! 90: u_char ri_rpos; /* which bit red starts at */
! 91: u_char ri_gpos; /* which bit green starts at */
! 92: u_char ri_bpos; /* which bit blue starts at */
! 93:
! 94: /* These are filled in by rasops_init() */
! 95: int ri_emuwidth; /* width we actually care about */
! 96: int ri_emuheight; /* height we actually care about */
! 97: int ri_emustride; /* bytes per row we actually care about */
! 98: int ri_rows; /* number of rows (characters, not pels) */
! 99: int ri_cols; /* number of columns (characters, not pels) */
! 100: int ri_delta; /* row delta in bytes */
! 101: int ri_pelbytes; /* bytes per pel (may be zero) */
! 102: int ri_fontscale; /* fontheight * fontstride */
! 103: int ri_xscale; /* fontwidth * pelbytes */
! 104: int ri_yscale; /* fontheight * stride */
! 105: u_char *ri_origbits; /* where screen bits actually start */
! 106: int ri_xorigin; /* where ri_bits begins (x) */
! 107: int ri_yorigin; /* where ri_bits begins (y) */
! 108: int32_t ri_devcmap[16]; /* color -> framebuffer data */
! 109:
! 110: /* The emulops you need to use, and the screen caps for wscons */
! 111: struct wsdisplay_emulops ri_ops;
! 112: int ri_caps;
! 113:
! 114: /* Callbacks so we can share some code */
! 115: void (*ri_do_cursor)(struct rasops_info *);
! 116: void (*ri_updatecursor)(struct rasops_info *);
! 117:
! 118: #if NRASOPS_ROTATION > 0
! 119: /* Used to intercept putchar to permit display rotation */
! 120: struct wsdisplay_emulops ri_real_ops;
! 121: #endif
! 122: };
! 123:
! 124: #define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d)))
! 125:
! 126: /*
! 127: * rasops_init().
! 128: *
! 129: * Integer parameters are the number of rows and columns we'd *like*.
! 130: *
! 131: * In terms of optimization, fonts that are a multiple of 8 pixels wide
! 132: * work the best.
! 133: *
! 134: * rasops_init() takes care of rasops_reconfig(). The parameters to both
! 135: * are the same. If calling rasops_reconfig() to change the font and
! 136: * ri_wsfcookie >= 0, you must call wsfont_unlock() on it, and reset it
! 137: * to -1 (or a new, valid cookie).
! 138: */
! 139:
! 140: /*
! 141: * Per-depth initialization functions. These should not be called outside
! 142: * the rasops code.
! 143: */
! 144: void rasops1_init(struct rasops_info *);
! 145: void rasops2_init(struct rasops_info *);
! 146: void rasops4_init(struct rasops_info *);
! 147: void rasops8_init(struct rasops_info *);
! 148: void rasops15_init(struct rasops_info *);
! 149: void rasops24_init(struct rasops_info *);
! 150: void rasops32_init(struct rasops_info *);
! 151:
! 152: /* rasops.c */
! 153: int rasops_init(struct rasops_info *, int, int);
! 154: int rasops_reconfig(struct rasops_info *, int, int);
! 155: void rasops_eraserows(void *, int, int, long);
! 156: void rasops_erasecols(void *, int, int, int, long);
! 157:
! 158: extern const u_char rasops_isgray[16];
! 159: extern const u_char rasops_cmap[256*3];
! 160:
! 161: #endif /* _RASOPS_H_ */
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