native_shm.c revision 9ba3cecaa02eba07bc6456c441126e4e2e823da5 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.11
4 *
5 * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.com>
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#include "util/u_memory.h"
27#include "util/u_inlines.h"
28
29#include "pipe/p_compiler.h"
30#include "pipe/p_screen.h"
31#include "pipe/p_context.h"
32#include "pipe/p_state.h"
33
34#include "sw/wayland/wayland_sw_winsys.h"
35
36#include "egllog.h"
37
38#include "native_wayland.h"
39
40#include <wayland-client.h>
41#include "wayland-egl-priv.h"
42
43#include <sys/types.h>
44#include <sys/stat.h>
45#include <fcntl.h>
46
47struct wayland_shm_display {
48   struct wayland_display base;
49
50   const struct native_event_handler *event_handler;
51   struct wl_shm *wl_shm;
52};
53
54static INLINE struct wayland_shm_display *
55wayland_shm_display(const struct native_display *ndpy)
56{
57   return (struct wayland_shm_display *) ndpy;
58}
59
60
61static void
62wayland_shm_display_destroy(struct native_display *ndpy)
63{
64   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
65
66   if (shmdpy->base.configs)
67      FREE(shmdpy->base.configs);
68   if (shmdpy->base.own_dpy)
69      wl_display_disconnect(shmdpy->base.dpy);
70
71   ndpy_uninit(ndpy);
72
73   FREE(shmdpy);
74}
75
76static struct wl_buffer *
77wayland_create_shm_buffer(struct wayland_display *display,
78                          struct wayland_surface *surface,
79                          enum native_attachment attachment)
80{
81   struct wayland_shm_display *shmdpy = (struct wayland_shm_display *) display;
82   struct pipe_screen *screen = shmdpy->base.base.screen;
83   struct pipe_resource *resource;
84   struct winsys_handle wsh;
85   uint width, height;
86   enum wl_shm_format format;
87   struct wl_buffer *buffer;
88   struct wl_shm_pool *pool;
89
90   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
91   resource_surface_get_size(surface->rsurf, &width, &height);
92
93   screen->resource_get_handle(screen, resource, &wsh);
94
95   pipe_resource_reference(&resource, NULL);
96
97   switch (surface->color_format) {
98   case PIPE_FORMAT_B8G8R8A8_UNORM:
99      format = WL_SHM_FORMAT_ARGB8888;
100      break;
101   case PIPE_FORMAT_B8G8R8X8_UNORM:
102      format = WL_SHM_FORMAT_XRGB8888;
103      break;
104   default:
105      return NULL;
106      break;
107   }
108
109   pool = wl_shm_create_pool(shmdpy->wl_shm, wsh.fd, wsh.size);
110   buffer = wl_shm_pool_create_buffer(pool, 0, width, height,
111                                      wsh.stride, format);
112   wl_shm_pool_destroy(pool);
113
114   return buffer;
115}
116
117static void
118shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
119{
120   struct wayland_shm_display *shmdpy = data;
121
122   switch (format) {
123   case WL_SHM_FORMAT_ARGB8888:
124      shmdpy->base.formats |= HAS_ARGB8888;
125      break;
126   case WL_SHM_FORMAT_XRGB8888:
127      shmdpy->base.formats |= HAS_XRGB8888;
128      break;
129   }
130}
131
132static const struct wl_shm_listener shm_listener = {
133   shm_handle_format
134};
135
136static boolean
137wayland_shm_display_init_screen(struct native_display *ndpy)
138{
139   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
140   struct sw_winsys *winsys = NULL;
141   uint32_t id;
142
143   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
144   if (id == 0)
145      wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
146   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
147   if (id == 0)
148      return FALSE;
149
150   shmdpy->wl_shm = wl_display_bind(shmdpy->base.dpy, id, &wl_shm_interface);
151   if (!shmdpy->wl_shm)
152      return FALSE;
153
154   wl_shm_add_listener(shmdpy->wl_shm, &shm_listener, shmdpy);
155
156   if (shmdpy->base.formats == 0)
157      wl_display_roundtrip(shmdpy->base.dpy);
158   if (shmdpy->base.formats == 0)
159      return FALSE;
160
161   winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
162   if (!winsys)
163      return FALSE;
164
165   shmdpy->base.base.screen =
166      shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
167
168   if (!shmdpy->base.base.screen) {
169      _eglLog(_EGL_WARNING, "failed to create shm screen");
170      return FALSE;
171   }
172
173   return TRUE;
174}
175
176struct wayland_display *
177wayland_create_shm_display(struct wl_display *dpy,
178                           const struct native_event_handler *event_handler)
179{
180   struct wayland_shm_display *shmdpy;
181
182   shmdpy = CALLOC_STRUCT(wayland_shm_display);
183   if (!shmdpy)
184      return NULL;
185
186   shmdpy->event_handler = event_handler;
187
188   shmdpy->base.dpy = dpy;
189   if (!shmdpy->base.dpy) {
190      wayland_shm_display_destroy(&shmdpy->base.base);
191      return NULL;
192   }
193
194   shmdpy->base.base.init_screen = wayland_shm_display_init_screen;
195   shmdpy->base.base.destroy = wayland_shm_display_destroy;
196   shmdpy->base.create_buffer = wayland_create_shm_buffer;
197
198   return &shmdpy->base;
199}
200
201/* vim: set sw=3 ts=8 sts=3 expandtab: */
202