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# xcbext.h

    00001 /*
    00002  * Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
    00003  * All Rights Reserved.
    00004  *
    00005  * Permission is hereby granted, free of charge, to any person obtaining a
    00006  * copy of this software and associated documentation files (the "Software"),
    00007  * to deal in the Software without restriction, including without limitation
    00008  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00009  * and/or sell copies of the Software, and to permit persons to whom the
    00010  * Software is furnished to do so, subject to the following conditions:
    00011  *
    00012  * The above copyright notice and this permission notice shall be included in
    00013  * all copies or substantial portions of the Software.
    00014  *
    00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00016  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00017  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00018  * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    00019  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    00020  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    00021  *
    00022  * Except as contained in this notice, the names of the authors or their
    00023  * institutions shall not be used in advertising or otherwise to promote the
    00024  * sale, use or other dealings in this Software without prior written
    00025  * authorization from the authors.
    00026  */
    00027
    00028 #ifndef __XCBEXT_H
    00029 #define __XCBEXT_H
    00030
    00031 #include "xcb.h"
    00032
    00033 #ifdef __cplusplus
    00034 extern "C" {
    00035 #endif
    00036
    00037 /* xcb_ext.c */
    00038
    00039 struct xcb_extension_t {
    00040     const char *name;
    00041     int global_id;
    00042 };
    00043
    00044
    00045 /* xcb_out.c */
    00046
    00047 typedef struct {
    00048     size_t count;
    00049     xcb_extension_t *ext;
    00050     uint8_t opcode;
    00051     uint8_t isvoid;
    00052 } xcb_protocol_request_t;
    00053
    00054 enum xcb_send_request_flags_t {
    00055     XCB_REQUEST_CHECKED = 1 << 0,
    00056     XCB_REQUEST_RAW = 1 << 1,
    00057     XCB_REQUEST_DISCARD_REPLY = 1 << 2
    00058 };
    00059
    00060 unsigned int xcb_send_request(xcb_connection_t *c, int flags, struct iovec *vector, const xcb_protocol_request_t *request);
    00061
    00062 /* xcb_take_socket allows external code to ask XCB for permission to
    00063  * take over the write side of the socket and send raw data with
    00064  * xcb_writev. xcb_take_socket provides the sequence number of the last
    00065  * request XCB sent. The caller of xcb_take_socket must supply a
    00066  * callback which XCB can call when it wants the write side of the
    00067  * socket back to make a request. This callback synchronizes with the
    00068  * external socket owner, flushes any output queues if appropriate, and
    00069  * then returns the sequence number of the last request sent over the
    00070  * socket. */
    00071 int xcb_take_socket(xcb_connection_t *c, void (*return_socket)(void *closure), void *closure, int flags, uint64_t *sent);
    00072
    00073 /* You must own the write-side of the socket (you've called
    00074  * xcb_take_socket, and haven't returned from return_socket yet) to call
    00075  * xcb_writev. Also, the iovec must have at least 1 byte of data in it.
    00076  * */
    00077 int xcb_writev(xcb_connection_t *c, struct iovec *vector, int count, uint64_t requests);
    00078
    00079
    00080 /* xcb_in.c */
    00081
    00082 void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request, xcb_generic_error_t **e);
    00083 int xcb_poll_for_reply(xcb_connection_t *c, unsigned int request, void **reply, xcb_generic_error_t **error);
    00084
    00085
    00086 /* xcb_util.c */
    00087
    00088 int xcb_popcount(uint32_t mask);
    00089
    00090 #ifdef __cplusplus
    00091 }
    00092 #endif
    00093
    00094 #endif