/* 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 */ #include "cairoint.h" #include "cairo-xcb-private.h" #include xcb_pixmap_t _cairo_xcb_connection_create_pixmap (cairo_xcb_connection_t *connection, uint8_t depth, xcb_drawable_t drawable, uint16_t width, uint16_t height) { xcb_pixmap_t pixmap = _cairo_xcb_connection_get_xid (connection); assert (width > 0); assert (height > 0); xcb_create_pixmap (connection->xcb_connection, depth, pixmap, drawable, width, height); return pixmap; } void _cairo_xcb_connection_free_pixmap (cairo_xcb_connection_t *connection, xcb_pixmap_t pixmap) { xcb_free_pixmap (connection->xcb_connection, pixmap); _cairo_xcb_connection_put_xid (connection, pixmap); } xcb_gcontext_t _cairo_xcb_connection_create_gc (cairo_xcb_connection_t *connection, xcb_drawable_t drawable, uint32_t value_mask, uint32_t *values) { xcb_gcontext_t gc = _cairo_xcb_connection_get_xid (connection); xcb_create_gc (connection->xcb_connection, gc, drawable, value_mask, values); return gc; } void _cairo_xcb_connection_free_gc (cairo_xcb_connection_t *connection, xcb_gcontext_t gc) { xcb_free_gc (connection->xcb_connection, gc); _cairo_xcb_connection_put_xid (connection, gc); } void _cairo_xcb_connection_change_gc (cairo_xcb_connection_t *connection, xcb_gcontext_t gc, uint32_t value_mask, uint32_t *values) { xcb_change_gc (connection->xcb_connection, gc, value_mask, values); } void _cairo_xcb_connection_copy_area (cairo_xcb_connection_t *connection, xcb_drawable_t src, xcb_drawable_t dst, xcb_gcontext_t gc, int16_t src_x, int16_t src_y, int16_t dst_x, int16_t dst_y, uint16_t width, uint16_t height) { xcb_copy_area (connection->xcb_connection, src, dst, gc, src_x, src_y, dst_x, dst_y, width, height); } void _cairo_xcb_connection_poly_fill_rectangle (cairo_xcb_connection_t *connection, xcb_drawable_t dst, xcb_gcontext_t gc, uint32_t num_rectangles, xcb_rectangle_t *rectangles) { xcb_poly_fill_rectangle (connection->xcb_connection, dst, gc, num_rectangles, rectangles); } void _cairo_xcb_connection_put_image (cairo_xcb_connection_t *connection, xcb_drawable_t dst, xcb_gcontext_t gc, uint16_t width, uint16_t height, int16_t dst_x, int16_t dst_y, uint8_t depth, uint32_t stride, void *data) { const uint32_t req_size = 18; uint32_t length = height * stride; uint32_t len = (req_size + length) >> 2; if (len < connection->maximum_request_length) { xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP, dst, gc, width, height, dst_x, dst_y, 0, depth, length, data); } else { int rows = (connection->maximum_request_length - req_size - 4) / stride; if (rows > 0) { do { if (rows > height) rows = height; length = rows * stride; xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP, dst, gc, width, rows, dst_x, dst_y, 0, depth, length, data); height -= rows; dst_y += rows; data = (char *) data + length; } while (height); } else { ASSERT_NOT_REACHED; } } } static void _cairo_xcb_connection_do_put_subimage (cairo_xcb_connection_t *connection, xcb_drawable_t dst, xcb_gcontext_t gc, int16_t src_x, int16_t src_y, uint16_t width, uint16_t height, uint16_t cpp, int stride, int16_t dst_x, int16_t dst_y, uint8_t depth, void *_data) { xcb_protocol_request_t xcb_req = { 0 /* count */, 0 /* ext */, XCB_PUT_IMAGE /* opcode */, 1 /* isvoid (doesn't cause a reply) */ }; xcb_put_image_request_t req; struct iovec vec_stack[CAIRO_STACK_ARRAY_LENGTH (struct iovec)]; struct iovec *vec = vec_stack; uint32_t len = 0; uint8_t *data = _data; int n = 3; /* Two extra entries are needed for xcb, two for us */ int entries_needed = height + 2 + 2; req.format = XCB_IMAGE_FORMAT_Z_PIXMAP; req.drawable = dst; req.gc = gc; req.width = width; req.height = height; req.dst_x = dst_x; req.dst_y = dst_y; req.left_pad = 0; req.depth = depth; req.pad0[0] = 0; req.pad0[1] = 0; if (entries_needed > ARRAY_LENGTH (vec_stack)) { vec = _cairo_malloc_ab (entries_needed, sizeof (struct iovec)); if (unlikely (vec == NULL)) { /* XXX loop over ARRAY_LENGTH (vec_stack) */ return; } } data += src_y * stride + src_x * cpp; /* vec[1] will be used in XCB if it has to use BigRequests or insert a sync, * vec[0] is used if the internal queue needs to be flushed. */ vec[2].iov_base = (char *) &req; vec[2].iov_len = sizeof (req); /* Now comes the actual data */ while (height--) { vec[n].iov_base = data; vec[n].iov_len = cpp * width; len += cpp * width; data += stride; n++; } /* And again some padding */ vec[n].iov_base = 0; vec[n].iov_len = -len & 3; n++; /* For efficiency reasons, this functions writes the request "directly" to * the xcb connection to avoid having to copy the data around. */ assert (n == entries_needed); xcb_req.count = n - 2; xcb_send_request (connection->xcb_connection, 0, &vec[2], &xcb_req); if (vec != vec_stack) free (vec); } void _cairo_xcb_connection_put_subimage (cairo_xcb_connection_t *connection, xcb_drawable_t dst, xcb_gcontext_t gc, int16_t src_x, int16_t src_y, uint16_t width, uint16_t height, uint16_t cpp, int stride, int16_t dst_x, int16_t dst_y, uint8_t depth, void *_data) { const uint32_t req_size = sizeof(xcb_put_image_request_t); uint32_t length = height * cpp * width; uint32_t len = (req_size + length) >> 2; if (len < connection->maximum_request_length) { _cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y, width, height, cpp, stride, dst_x, dst_y, depth, _data); } else { int rows = (connection->maximum_request_length - req_size - 4) / (cpp * width); if (rows > 0) { do { if (rows > height) rows = height; _cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y, width, rows, cpp, stride, dst_x, dst_y, depth, _data); height -= rows; dst_y += rows; _data = (char *) _data + stride * rows; } while (height); } else { ASSERT_NOT_REACHED; } } } xcb_get_image_reply_t * _cairo_xcb_connection_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) { return xcb_get_image_reply (connection->xcb_connection, xcb_get_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP, src, src_x, src_y, width, height, (uint32_t) -1), NULL); }