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/* cairo - a vector graphics library with display and print output
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 *
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 * Copyright © 2009 Intel Corporation
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it either under the terms of the GNU Lesser General Public
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 * License version 2.1 as published by the Free Software Foundation
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 * (the "LGPL") or, at your option, under the terms of the Mozilla
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 * Public License Version 1.1 (the "MPL"). If you do not alter this
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 * notice, a recipient may use your version of this file under either
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 * the MPL or the LGPL.
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 *
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 * You should have received a copy of the LGPL along with this library
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 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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 * You should have received a copy of the MPL along with this library
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 * in the file COPYING-MPL-1.1
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 *
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 * The contents of this file are subject to the Mozilla Public License
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 * Version 1.1 (the "License"); you may not use this file except in
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 * compliance with the License. You may obtain a copy of the License at
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 * http://www.mozilla.org/MPL/
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 *
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 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
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 * the specific language governing rights and limitations.
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 *
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 * Contributor(s):
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 *	Chris Wilson <chris@chris-wilson.co.uk>
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 */
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#include "cairoint.h"
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#if CAIRO_HAS_XCB_SHM_FUNCTIONS
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#include "cairo-xcb-private.h"
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#include <xcb/xcbext.h>
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#include <xcb/shm.h>
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uint32_t
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_cairo_xcb_connection_shm_attach (cairo_xcb_connection_t *connection,
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				  uint32_t id,
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				  cairo_bool_t readonly)
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{
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    uint32_t segment = xcb_generate_id (connection->xcb_connection);
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    assert (connection->flags & CAIRO_XCB_HAS_SHM);
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    xcb_shm_attach (connection->xcb_connection, segment, id, readonly);
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    return segment;
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}
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void
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_cairo_xcb_connection_shm_put_image (cairo_xcb_connection_t *connection,
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				     xcb_drawable_t dst,
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				     xcb_gcontext_t gc,
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				     uint16_t total_width,
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				     uint16_t total_height,
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				     int16_t src_x,
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				     int16_t src_y,
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				     uint16_t width,
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				     uint16_t height,
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				     int16_t dst_x,
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				     int16_t dst_y,
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				     uint8_t depth,
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				     uint32_t shm,
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				     uint32_t offset)
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{
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    assert (connection->flags & CAIRO_XCB_HAS_SHM);
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    xcb_shm_put_image (connection->xcb_connection, dst, gc, total_width, total_height,
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		       src_x, src_y, width, height, dst_x, dst_y, depth,
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		       XCB_IMAGE_FORMAT_Z_PIXMAP, 0, shm, offset);
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}
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cairo_status_t
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_cairo_xcb_connection_shm_get_image (cairo_xcb_connection_t *connection,
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				     xcb_drawable_t src,
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				     int16_t src_x,
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				     int16_t src_y,
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				     uint16_t width,
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				     uint16_t height,
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				     uint32_t shmseg,
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				     uint32_t offset)
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{
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    xcb_shm_get_image_reply_t *reply;
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    assert (connection->flags & CAIRO_XCB_HAS_SHM);
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    reply = xcb_shm_get_image_reply (connection->xcb_connection,
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				     xcb_shm_get_image (connection->xcb_connection,
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							src,
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							src_x, src_y,
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							width, height,
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							(uint32_t) -1,
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							XCB_IMAGE_FORMAT_Z_PIXMAP,
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							shmseg, offset),
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				     NULL);
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    free (reply);
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    if (!reply) {
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	/* an error here should be impossible */
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	return _cairo_error (CAIRO_STATUS_READ_ERROR);
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    }
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    return CAIRO_STATUS_SUCCESS;
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}
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void
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_cairo_xcb_connection_shm_detach (cairo_xcb_connection_t *connection,
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				  uint32_t segment)
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{
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    assert (connection->flags & CAIRO_XCB_HAS_SHM);
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    xcb_shm_detach (connection->xcb_connection, segment);
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}
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#endif /* CAIRO_HAS_XCB_SHM_FUNCTIONS */