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kms: Adds api to get at the kms file descriptor

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This adds a cogl_kms_renderer_get_kms_fd() function that lets developers
access the kms file descriptor being used for controlling the kernel
mode setting.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Robert Bragg 2012-01-23 15:37:51 +00:00
parent 6b7af18313
commit 1a638b6fd6
4 changed files with 71 additions and 0 deletions
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2
cogl/Makefile.am
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@ -397,6 +397,8 @@ cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl-wayland-private.h
endif
if SUPPORT_EGL_PLATFORM_KMS
cogl_public_h += \
$(srcdir)/cogl-kms-renderer.h
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl-kms.c \
$(srcdir)/winsys/cogl-winsys-egl-kms-private.h

51
cogl/cogl-kms-renderer.h Normal file
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@ -0,0 +1,51 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_KMS_RENDERER_H__
#define __COGL_KMS_RENDERER_H__
#include <cogl/cogl-types.h>
#include <cogl/cogl-renderer.h>
G_BEGIN_DECLS
/**
* cogl_kms_renderer_get_kms_fd:
* @renderer: A #CoglRenderer
*
* Queries the file descriptor Cogl is using internally for
* communicating with the kms driver.
*
* Return value: The kms file descriptor or -1 if no kms file
* desriptor has been opened by Cogl.
* Stability: unstable
*/
int
cogl_kms_renderer_get_kms_fd (CoglRenderer *renderer);
G_END_DECLS
#endif /* __COGL_KMS_RENDERER_H__ */

3
cogl/cogl.h
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@ -98,6 +98,9 @@ typedef struct _CoglFramebuffer CoglFramebuffer;
#include <cogl/cogl-framebuffer.h>
#include <cogl/cogl-onscreen.h>
#include <cogl/cogl-poll.h>
#if defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
#include <cogl/cogl-kms-renderer.h>
#endif
#if defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
#include <cogl/cogl-wayland-renderer.h>
#endif

15
cogl/winsys/cogl-winsys-egl-kms.c
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@ -565,3 +565,18 @@ _cogl_winsys_egl_kms_get_vtable (void)
return &vtable;
}
int
cogl_kms_renderer_get_kms_fd (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), -1);
if (renderer->connected)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
return kms_renderer->fd;
}
else
return -1;
}