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/* Cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Chris Wilson
*
* 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.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is Chris Wilson.
*/
#ifndef CAIRO_DRM_H
#define CAIRO_DRM_H
#include "cairo.h"
#if CAIRO_HAS_DRM_SURFACE
CAIRO_BEGIN_DECLS
struct udev_device;
cairo_public cairo_device_t *
cairo_drm_device_get (struct udev_device *device);
cairo_public cairo_device_t *
cairo_drm_device_get_for_fd (int fd);
cairo_public cairo_device_t *
cairo_drm_device_default (void);
cairo_public int
cairo_drm_device_get_fd (cairo_device_t *device);
cairo_public void
cairo_drm_device_throttle (cairo_device_t *device);
cairo_public cairo_surface_t *
cairo_drm_surface_create (cairo_device_t *device,
cairo_format_t format,
int width, int height);
cairo_public cairo_surface_t *
cairo_drm_surface_create_for_name (cairo_device_t *device,
unsigned int name,
cairo_format_t format,
int width, int height, int stride);
cairo_public cairo_surface_t *
cairo_drm_surface_create_from_cacheable_image (cairo_device_t *device,
cairo_surface_t *surface);
cairo_public cairo_status_t
cairo_drm_surface_enable_scan_out (cairo_surface_t *surface);
cairo_public unsigned int
cairo_drm_surface_get_handle (cairo_surface_t *surface);
cairo_public unsigned int
cairo_drm_surface_get_name (cairo_surface_t *surface);
cairo_public cairo_format_t
cairo_drm_surface_get_format (cairo_surface_t *surface);
cairo_public int
cairo_drm_surface_get_width (cairo_surface_t *surface);
cairo_public int
cairo_drm_surface_get_height (cairo_surface_t *surface);
cairo_public int
cairo_drm_surface_get_stride (cairo_surface_t *surface);
/* XXX map/unmap, general surface layer? */
/* Rough outline, culled from a conversation on IRC:
* map() returns an image-surface representation of the drm-surface,
* which you unmap() when you are finished, i.e. map() pulls the buffer back
* from the GPU, maps it into the CPU domain and gives you direct access to
* the pixels. With the unmap(), the buffer is ready to be used again by the
* GPU and *until* the unmap(), all operations will be done in software.
*
* (Technically calling cairo_surface_flush() on the underlying drm-surface
* will also disassociate the mapping.)
*/
cairo_public cairo_surface_t *
cairo_drm_surface_map_to_image (cairo_surface_t *surface);
cairo_public void
cairo_drm_surface_unmap (cairo_surface_t *drm_surface,
cairo_surface_t *image_surface);
CAIRO_END_DECLS
#else /* CAIRO_HAS_DRM_SURFACE */
# error Cairo was not compiled with support for the DRM backend
#endif /* CAIRO_HAS_DRM_SURFACE */
#endif /* CAIRO_DRM_H */
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