src/gallium/state_trackers/egl/wayland/native_shm.c

   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
  47 struct 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
  54 static INLINE struct wayland_shm_display *
  55 wayland_shm_display(const struct native_display *ndpy)
  56 {
  57    return (struct wayland_shm_display *) ndpy;
  58 }
  59
  60
  61 static void
  62 wayland_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_destroy(shmdpy->base.dpy);
  70
  71    ndpy_uninit(ndpy);
  72
  73    FREE(shmdpy);
  74 }
  75
  76 static struct wl_buffer *
  77 wayland_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
  88    resource = resource_surface_get_single_resource(surface->rsurf, attachment);
  89    resource_surface_get_size(surface->rsurf, &width, &height);
  90
  91    screen->resource_get_handle(screen, resource, &wsh);
  92
  93    pipe_resource_reference(&resource, NULL);
  94
  95    switch (surface->color_format) {
  96    case PIPE_FORMAT_B8G8R8A8_UNORM:
  97       format = (surface->premultiplied_alpha) ?
  98          WL_SHM_FORMAT_PREMULTIPLIED_ARGB32 : WL_SHM_FORMAT_ARGB32;
  99       break;
 100    case PIPE_FORMAT_B8G8R8X8_UNORM:
 101       format = WL_SHM_FORMAT_XRGB32;
 102       break;
 103    default:
 104       return NULL;
 105       break;
 106    }
 107
 108    return wl_shm_create_buffer(shmdpy->wl_shm, wsh.fd,
 109                                width, height,
 110                                wsh.stride, format);
 111 }
 112
 113 static void
 114 shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
 115 {
 116    struct wayland_shm_display *shmdpy = data;
 117
 118    switch (format) {
 119    case WL_SHM_FORMAT_ARGB32:
 120       shmdpy->base.formats |= HAS_ARGB8888;
 121       break;
 122    case WL_SHM_FORMAT_XRGB8888:
 123       shmdpy->base.formats |= HAS_XRGB8888;
 124       break;
 125    }
 126 }
 127
 128 static const struct wl_shm_listener shm_listener = {
 129    shm_handle_format
 130 };
 131
 132 static boolean
 133 wayland_shm_display_init_screen(struct native_display *ndpy)
 134 {
 135    struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
 136    struct sw_winsys *winsys = NULL;
 137    uint32_t id;
 138
 139    id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
 140    if (id == 0)
 141       wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
 142    id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
 143    if (id == 0)
 144       return FALSE;
 145
 146    shmdpy->wl_shm = wl_display_bind(shmdpy->base.dpy, id, &wl_shm_interface);
 147    if (!shmdpy->wl_shm)
 148       return FALSE;
 149
 150    wl_shm_add_listener(shmdpy->wl_shm, &shm_listener, shmdpy);
 151
 152    if (shmdpy->base.formats == 0)
 153       wl_display_roundtrip(shmdpy->base.dpy);
 154    if (shmdpy->base.formats == 0)
 155       return FALSE;
 156
 157    winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
 158    if (!winsys)
 159       return FALSE;
 160
 161    shmdpy->base.base.screen =
 162       shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
 163
 164    if (!shmdpy->base.base.screen) {
 165       _eglLog(_EGL_WARNING, "failed to create shm screen");
 166       return FALSE;
 167    }
 168
 169    return TRUE;
 170 }
 171
 172 struct wayland_display *
 173 wayland_create_shm_display(struct wl_display *dpy,
 174                            const struct native_event_handler *event_handler)
 175 {
 176    struct wayland_shm_display *shmdpy;
 177
 178    shmdpy = CALLOC_STRUCT(wayland_shm_display);
 179    if (!shmdpy)
 180       return NULL;
 181
 182    shmdpy->event_handler = event_handler;
 183
 184    shmdpy->base.dpy = dpy;
 185    if (!shmdpy->base.dpy) {
 186       wayland_shm_display_destroy(&shmdpy->base.base);
 187       return NULL;
 188    }
 189
 190    shmdpy->base.base.init_screen = wayland_shm_display_init_screen;
 191    shmdpy->base.base.destroy = wayland_shm_display_destroy;
 192    shmdpy->base.create_buffer = wayland_create_shm_buffer;
 193
 194    return &shmdpy->base;
 195 }
 196
 197 /* vim: set sw=3 ts=8 sts=3 expandtab: */