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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. /* GCC visibility */
  35. #if defined(__GNUC__) && __GNUC__ >= 4
  36. #define GBM_EXPORT __attribute__ ((visibility("default")))
  37. #else
  38. #define GBM_EXPORT
  39. #endif
  40.  
  41. /**
  42.  * \file gbmint.h
  43.  * \brief Internal implementation details of gbm
  44.  */
  45.  
  46. /**
  47.  * The device used for the memory allocation.
  48.  *
  49.  * The members of this structure should be not accessed directly
  50.  */
  51. struct gbm_device {
  52.    /* Hack to make a gbm_device detectable by its first element. */
  53.    struct gbm_device *(*dummy)(int);
  54.  
  55.    int fd;
  56.    const char *name;
  57.    unsigned int refcount;
  58.    struct stat stat;
  59.  
  60.    void (*destroy)(struct gbm_device *gbm);
  61.    int (*is_format_supported)(struct gbm_device *gbm,
  62.                               uint32_t format,
  63.                               uint32_t usage);
  64.  
  65.    struct gbm_bo *(*bo_create)(struct gbm_device *gbm,
  66.                                uint32_t width, uint32_t height,
  67.                                uint32_t format,
  68.                                uint32_t usage);
  69.    struct gbm_bo *(*bo_import)(struct gbm_device *gbm, uint32_t type,
  70.                                void *buffer, uint32_t usage);
  71.    int (*bo_write)(struct gbm_bo *bo, const void *buf, size_t data);
  72.    void (*bo_destroy)(struct gbm_bo *bo);
  73.  
  74.    struct gbm_surface *(*surface_create)(struct gbm_device *gbm,
  75.                                          uint32_t width, uint32_t height,
  76.                                          uint32_t format, uint32_t flags);
  77.    struct gbm_bo *(*surface_lock_front_buffer)(struct gbm_surface *surface);
  78.    void (*surface_release_buffer)(struct gbm_surface *surface,
  79.                                   struct gbm_bo *bo);
  80.    int (*surface_has_free_buffers)(struct gbm_surface *surface);
  81.    void (*surface_destroy)(struct gbm_surface *surface);
  82. };
  83.  
  84. /**
  85.  * The allocated buffer object.
  86.  *
  87.  * The members in this structure should not be accessed directly.
  88.  */
  89. struct gbm_bo {
  90.    struct gbm_device *gbm;
  91.    uint32_t width;
  92.    uint32_t height;
  93.    uint32_t stride;
  94.    uint32_t format;
  95.    union gbm_bo_handle  handle;
  96.    void *user_data;
  97.    void (*destroy_user_data)(struct gbm_bo *, void *);
  98. };
  99.  
  100. struct gbm_surface {
  101.    struct gbm_device *gbm;
  102.    uint32_t width;
  103.    uint32_t height;
  104.    uint32_t format;
  105.    uint32_t flags;
  106. };
  107.  
  108. struct gbm_backend {
  109.    const char *backend_name;
  110.    struct gbm_device *(*create_device)(int fd);
  111. };
  112.  
  113. GBM_EXPORT struct gbm_device *
  114. _gbm_mesa_get_device(int fd);
  115.  
  116. #endif
  117.