src/gallium/state_trackers/egl/common/native_probe.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.8
   4  *
   5  * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #ifndef _NATIVE_PROBE_H_
  27 #define _NATIVE_PROBE_H_
  28
  29 #include "EGL/egl.h"  /* for EGL native types */
  30
  31 /**
  32  * Enumerations for probe results.
  33  */
  34 enum native_probe_result {
  35    NATIVE_PROBE_UNKNOWN,
  36    NATIVE_PROBE_FALLBACK,
  37    NATIVE_PROBE_SUPPORTED,
  38    NATIVE_PROBE_EXACT,
  39 };
  40
  41 /**
  42  * A probe object for display probe.
  43  */
  44 struct native_probe {
  45    int magic;
  46    EGLNativeDisplayType display;
  47    void *data;
  48
  49    void (*destroy)(struct native_probe *nprobe);
  50 };
  51
  52 /**
  53  * Return a probe object for the given display.
  54  *
  55  * Note that the returned object may be cached and used by different native
  56  * display modules.  It allows fast probing when multiple modules probe the
  57  * same display.
  58  */
  59 struct native_probe *
  60 native_create_probe(EGLNativeDisplayType dpy);
  61
  62 /**
  63  * Probe the probe object.
  64  */
  65 enum native_probe_result
  66 native_get_probe_result(struct native_probe *nprobe);
  67
  68 #endif /* _NATIVE_PROBE_H_ */