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-rw-r--r--src/cairo-xcb-connection-shm.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/cairo-xcb-connection-shm.c b/src/cairo-xcb-connection-shm.c
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+++ b/src/cairo-xcb-connection-shm.c
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+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+
+#include "cairo-xcb-private.h"
+
+#include <xcb/xcbext.h>
+#include <xcb/shm.h>
+
+uint32_t
+_cairo_xcb_connection_shm_attach (cairo_xcb_connection_t *connection,
+ uint32_t id,
+ cairo_bool_t readonly)
+{
+ uint32_t segment = _cairo_xcb_connection_get_xid (connection);
+ assert (connection->flags & CAIRO_XCB_HAS_SHM);
+ xcb_shm_attach (connection->xcb_connection, segment, id, readonly);
+ return segment;
+}
+
+void
+_cairo_xcb_connection_shm_put_image (cairo_xcb_connection_t *connection,
+ xcb_drawable_t dst,
+ xcb_gcontext_t gc,
+ uint16_t total_width,
+ uint16_t total_height,
+ int16_t src_x,
+ int16_t src_y,
+ uint16_t width,
+ uint16_t height,
+ int16_t dst_x,
+ int16_t dst_y,
+ uint8_t depth,
+ uint32_t shm,
+ uint32_t offset)
+{
+ assert (connection->flags & CAIRO_XCB_HAS_SHM);
+ xcb_shm_put_image (connection->xcb_connection, dst, gc, total_width, total_height,
+ src_x, src_y, width, height, dst_x, dst_y, depth,
+ XCB_IMAGE_FORMAT_Z_PIXMAP, 0, shm, offset);
+}
+
+cairo_status_t
+_cairo_xcb_connection_shm_get_image (cairo_xcb_connection_t *connection,
+ xcb_drawable_t src,
+ int16_t src_x,
+ int16_t src_y,
+ uint16_t width,
+ uint16_t height,
+ uint32_t shmseg,
+ uint32_t offset)
+{
+ xcb_shm_get_image_reply_t *reply;
+
+ assert (connection->flags & CAIRO_XCB_HAS_SHM);
+ reply = xcb_shm_get_image_reply (connection->xcb_connection,
+ xcb_shm_get_image (connection->xcb_connection,
+ src,
+ src_x, src_y,
+ width, height,
+ (uint32_t) -1,
+ XCB_IMAGE_FORMAT_Z_PIXMAP,
+ shmseg, offset),
+ NULL);
+ free (reply);
+
+ if (!reply) {
+ /* an error here should be impossible */
+ return _cairo_error (CAIRO_STATUS_READ_ERROR);
+ }
+
+ return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_xcb_connection_shm_detach (cairo_xcb_connection_t *connection,
+ uint32_t segment)
+{
+ assert (connection->flags & CAIRO_XCB_HAS_SHM);
+ xcb_shm_detach (connection->xcb_connection, segment);
+ _cairo_xcb_connection_put_xid (connection, segment);
+}
+
+#endif /* CAIRO_HAS_XCB_SHM_FUNCTIONS */