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