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  1. /*
  2.  * Copyright © 2011 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18.  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19.  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20.  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22.  * DEALINGS IN THE SOFTWARE.
  23.  *
  24.  * Authors:
  25.  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  26.  */
  27.  
  28. #ifndef INTERNAL_H_
  29. #define INTERNAL_H_
  30.  
  31. #include "gbm.h"
  32. #include <sys/stat.h>
  33.  
  34. #if defined(BUILD_GL32)
  35. #   define GBM_EXPORT __declspec(dllexport)
  36. #else
  37. #   define GBM_EXPORT __declspec(dllimport)
  38. #endif
  39.  
  40. /**
  41.  * \file gbmint.h
  42.  * \brief Internal implementation details of gbm
  43.  */
  44.  
  45. /**
  46.  * The device used for the memory allocation.
  47.  *
  48.  * The members of this structure should be not accessed directly
  49.  */
  50. struct gbm_device {
  51.    /* Hack to make a gbm_device detectable by its first element. */
  52.    struct gbm_device *(*dummy)(int);
  53.  
  54.    int fd;
  55.    const char *name;
  56.    unsigned int refcount;
  57.    struct stat stat;
  58.  
  59.    void (*destroy)(struct gbm_device *gbm);
  60.    int (*is_format_supported)(struct gbm_device *gbm,
  61.                               uint32_t format,
  62.                               uint32_t usage);
  63.  
  64.    struct gbm_bo *(*bo_create)(struct gbm_device *gbm,
  65.                                uint32_t width, uint32_t height,
  66.                                uint32_t format,
  67.                                uint32_t usage);
  68.    struct gbm_bo *(*bo_import)(struct gbm_device *gbm, uint32_t type,
  69.                                void *buffer, uint32_t usage);
  70.    int (*bo_write)(struct gbm_bo *bo, const void *buf, size_t data);
  71.    void (*bo_destroy)(struct gbm_bo *bo);
  72.  
  73.    struct gbm_surface *(*surface_create)(struct gbm_device *gbm,
  74.                                          uint32_t width, uint32_t height,
  75.                                          uint32_t format, uint32_t flags);
  76.    struct gbm_bo *(*surface_lock_front_buffer)(struct gbm_surface *surface);
  77.    void (*surface_release_buffer)(struct gbm_surface *surface,
  78.                                   struct gbm_bo *bo);
  79.    int (*surface_has_free_buffers)(struct gbm_surface *surface);
  80.    void (*surface_destroy)(struct gbm_surface *surface);
  81. };
  82.  
  83. /**
  84.  * The allocated buffer object.
  85.  *
  86.  * The members in this structure should not be accessed directly.
  87.  */
  88. struct gbm_bo {
  89.    struct gbm_device *gbm;
  90.    uint32_t width;
  91.    uint32_t height;
  92.    uint32_t stride;
  93.    uint32_t format;
  94.    union gbm_bo_handle  handle;
  95.    void *user_data;
  96.    void (*destroy_user_data)(struct gbm_bo *, void *);
  97. };
  98.  
  99. struct gbm_surface {
  100.    struct gbm_device *gbm;
  101.    uint32_t width;
  102.    uint32_t height;
  103.    uint32_t format;
  104.    uint32_t flags;
  105. };
  106.  
  107. struct gbm_backend {
  108.    const char *backend_name;
  109.    struct gbm_device *(*create_device)(int fd);
  110. };
  111.  
  112. GBM_EXPORT struct gbm_device *
  113. _gbm_mesa_get_device(int fd);
  114.  
  115. #endif
  116.