/* Copyright (c) 1993, 1998, Oracle and/or its affiliates. All rights reserved.
*
* 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 (including the next
* paragraph) 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 AUTHORS OR 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.
*/
#ifndef _DGA_PIXSHARED_H
#define _DGA_PIXSHARED_H
/*
* dga_pixshared.h - Sun Direct Graphics Access shared page include file.
*/
/* Below is the definition of the pixmap shared page structure plus all
* the other misc. definitions and structures that are used in both the
* server and dga client library.
*
* Shared Pixmap Information. This structure contains the information
* necessary to allow the server and client to share access to a DGA
* pixmap . This information is located in the first page of
* the shared memory created by the server in response to a call to
* XDgaGrabPixmap(). The server communicates the current state
* of the shared pixmap to the client through the fields within
* this structure.
*/
typedef u_int *PX_LOCKP_T;
#define PXMPMAGIC 0x50584D50 /* "PXMP"=0x50584D50 */
#define PXMPVERS 0 /* Current version number */
typedef struct shpx_entry_0 {
u_int s_fd; /* server's file descriptor */
u_int offset; /* offset to first pixmap info struct*/
u_int s_size; /* current total file size */
} SHPX_ENTRY_0;
typedef struct shpx_entry_1 {
int s_num_shpx; /* current number of shared pixmaps */
u_int s_dir_seq; /* server's shpx directory change cnt*/
u_int s_next_offset; /* server's next avail offset */
} SHPX_ENTRY_1;
typedef struct shpx_entry {
u_int xid; /* xid of shared pixmap */
u_int offset; /* offset to info struct */
u_int size; /* total size of this pixmap */
} SHPX_ENTRY;
typedef union shpx_directory {
SHPX_ENTRY_0 shpx_entry_0;
SHPX_ENTRY_1 shpx_entry_1;
SHPX_ENTRY shpx_entry;
} SHPX_DIRECTORY;
typedef struct shared_pixmap_info {
u_int magic; /* magic number, "PXMP"=0x50584D50 */
u_char version; /* version, currently 0 */
u_char obsolete; /* pixmap info obsolete flag */
u_char device; /* device type identifier from fbio.h ???*/
u_char cached; /* 1 = pixels cached on hw; 0 = pixels in mem */
u_int s_cacheseq; /* server's cache sequence count */
u_int s_modified; /* server has changed this data struct*/
u_int data_offset; /* offset to pixel data */
u_int device_offset; /* offset to device specific section */
short width; /* pixmap width */
short height; /* pixmap height */
u_int linebytes; /* bytes per scanline */
u_char depth; /* pixmap depth */
u_char bitsperpixel; /* pixmap bitsPerPixel */
u_char pad1[2]; /* Unused pad area */
u_int s_fd; /* server's file descriptor */
u_int s_size; /* server's size of pixel array */
u_int s_dir_index; /* server's shpx directory index */
SHPX_DIRECTORY *s_shpx_dir; /* server's pointer to shpx dir */
u_char *s_pixels; /* server shared pixel memory pointer*/
u_char scr_name[32]; /* screen name for cached pixmap */
u_char fn[256]; /* Shared file name */
u_int p_refcnt; /* for nested locking */
PX_LOCKP_T p_lockp; /* pointer to lockpage */
PX_LOCKP_T p_unlockp; /* pointer to unlockpage */
uint32_t p_cookie; /* "cookie" for lock pages */
int locktype; /* type of locking */
u_int s_devinfoseq; /* indicates change to dev_info */
/* DO NOT ADD ANYTHING BELOW dev_info - if you need to any any
* thing, do so after this line and above dev_info
*/
char dev_info[32]; /* device specific information */
} SHARED_PIXMAP_INFO;
#endif /* _DGA_PIXSHARED_H */