src/gallium/drivers/identity/id_drm.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "state_tracker/drm_api.h"
  29
  30 #include "util/u_memory.h"
  31 #include "identity/id_drm.h"
  32 #include "identity/id_screen.h"
  33 #include "identity/id_public.h"
  34 #include "identity/id_screen.h"
  35 #include "identity/id_objects.h"
  36
  37 struct identity_drm_api
  38 {
  39    struct drm_api base;
  40
  41    struct drm_api *api;
  42 };
  43
  44 static INLINE struct identity_drm_api *
  45 identity_drm_api(struct drm_api *_api)
  46 {
  47    return (struct identity_drm_api *)_api;
  48 }
  49
  50 static struct pipe_screen *
  51 identity_drm_create_screen(struct drm_api *_api, int fd,
  52                            struct drm_create_screen_arg *arg)
  53 {
  54    struct identity_drm_api *id_api = identity_drm_api(_api);
  55    struct drm_api *api = id_api->api;
  56    struct pipe_screen *screen;
  57
  58    if (arg && arg->mode != DRM_CREATE_NORMAL)
  59       return NULL;
  60
  61    screen = api->create_screen(api, fd, arg);
  62
  63    return identity_screen_create(screen);
  64 }
  65
  66 static struct pipe_context *
  67 identity_drm_create_context(struct drm_api *_api,
  68                             struct pipe_screen *_screen)
  69 {
  70    struct identity_screen *id_screen = identity_screen(_screen);
  71    struct identity_drm_api *id_api = identity_drm_api(_api);
  72    struct pipe_screen *screen = id_screen->screen;
  73    struct drm_api *api = id_api->api;
  74    struct pipe_context *pipe;
  75
  76    pipe = api->create_context(api, screen);
  77
  78    pipe = identity_context_create(_screen, pipe);
  79
  80    return pipe;
  81 }
  82
  83 static struct pipe_texture *
  84 identity_drm_texture_from_shared_handle(struct drm_api *_api,
  85                                         struct pipe_screen *_screen,
  86                                         struct pipe_texture *templ,
  87                                         const char *name,
  88                                         unsigned stride,
  89                                         unsigned handle)
  90 {
  91    struct identity_screen *id_screen = identity_screen(_screen);
  92    struct identity_drm_api *id_api = identity_drm_api(_api);
  93    struct pipe_screen *screen = id_screen->screen;
  94    struct drm_api *api = id_api->api;
  95    struct pipe_texture *result;
  96
  97    result = api->texture_from_shared_handle(api, screen, templ, name, stride, handle);
  98
  99    result = identity_texture_create(identity_screen(_screen), result);
 100
 101    return result;
 102 }
 103
 104 static boolean
 105 identity_drm_shared_handle_from_texture(struct drm_api *_api,
 106                                         struct pipe_screen *_screen,
 107                                         struct pipe_texture *_texture,
 108                                         unsigned *stride,
 109                                         unsigned *handle)
 110 {
 111    struct identity_screen *id_screen = identity_screen(_screen);
 112    struct identity_texture *id_texture = identity_texture(_texture);
 113    struct identity_drm_api *id_api = identity_drm_api(_api);
 114    struct pipe_screen *screen = id_screen->screen;
 115    struct pipe_texture *texture = id_texture->texture;
 116    struct drm_api *api = id_api->api;
 117
 118    return api->shared_handle_from_texture(api, screen, texture, stride, handle);
 119 }
 120
 121 static boolean
 122 identity_drm_local_handle_from_texture(struct drm_api *_api,
 123                                        struct pipe_screen *_screen,
 124                                        struct pipe_texture *_texture,
 125                                        unsigned *stride,
 126                                        unsigned *handle)
 127 {
 128    struct identity_screen *id_screen = identity_screen(_screen);
 129    struct identity_texture *id_texture = identity_texture(_texture);
 130    struct identity_drm_api *id_api = identity_drm_api(_api);
 131    struct pipe_screen *screen = id_screen->screen;
 132    struct pipe_texture *texture = id_texture->texture;
 133    struct drm_api *api = id_api->api;
 134
 135    return api->local_handle_from_texture(api, screen, texture, stride, handle);
 136 }
 137
 138 static void
 139 identity_drm_destroy(struct drm_api *_api)
 140 {
 141    struct identity_drm_api *id_api = identity_drm_api(_api);
 142    struct drm_api *api = id_api->api;
 143    api->destroy(api);
 144
 145    free(id_api);
 146 }
 147
 148 struct drm_api *
 149 identity_drm_create(struct drm_api *api)
 150 {
 151    struct identity_drm_api *id_api;
 152
 153    if (!api)
 154       goto error;
 155
 156    id_api = CALLOC_STRUCT(identity_drm_api);
 157
 158    if (!id_api)
 159       goto error;
 160
 161    id_api->base.create_screen = identity_drm_create_screen;
 162    id_api->base.create_context = identity_drm_create_context;
 163    id_api->base.texture_from_shared_handle = identity_drm_texture_from_shared_handle;
 164    id_api->base.shared_handle_from_texture = identity_drm_shared_handle_from_texture;
 165    id_api->base.local_handle_from_texture = identity_drm_local_handle_from_texture;
 166    id_api->base.destroy = identity_drm_destroy;
 167    id_api->api = api;
 168
 169    return &id_api->base;
 170
 171 error:
 172    return api;
 173 }