| 1 | /* |
| 2 | * Copyright © 2013 Keith Packard |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 5 | * documentation for any purpose is hereby granted without fee, provided that |
| 6 | * the above copyright notice appear in all copies and that both that copyright |
| 7 | * notice and this permission notice appear in supporting documentation, and |
| 8 | * that the name of the copyright holders not be used in advertising or |
| 9 | * publicity pertaining to distribution of the software without specific, |
| 10 | * written prior permission. The copyright holders make no representations |
| 11 | * about the suitability of this software for any purpose. It is provided "as |
| 12 | * is" without express or implied warranty. |
| 13 | * |
| 14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 20 | * OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifdef HAVE_XORG_CONFIG_H |
| 24 | #include <xorg-config.h> |
| 25 | #endif |
| 26 | |
| 27 | #include "present_priv.h" |
| 28 | |
| 29 | int present_request; |
| 30 | DevPrivateKeyRec present_screen_private_key; |
| 31 | DevPrivateKeyRec present_window_private_key; |
| 32 | |
| 33 | /* |
| 34 | * Get a pointer to a present window private, creating if necessary |
| 35 | */ |
| 36 | present_window_priv_ptr |
| 37 | present_get_window_priv(WindowPtr window, Bool create) |
| 38 | { |
| 39 | present_window_priv_ptr window_priv = present_window_priv(window); |
| 40 | |
| 41 | if (!create || window_priv != NULL) |
| 42 | return window_priv; |
| 43 | window_priv = calloc (1, sizeof (present_window_priv_rec)); |
| 44 | if (!window_priv) |
| 45 | return NULL; |
| 46 | xorg_list_init(&window_priv->vblank); |
| 47 | xorg_list_init(&window_priv->notifies); |
| 48 | dixSetPrivate(&window->devPrivates, &present_window_private_key, window_priv); |
| 49 | return window_priv; |
| 50 | } |
| 51 | |
| 52 | /* |
| 53 | * Hook the close screen function to clean up our screen private |
| 54 | */ |
| 55 | static Bool |
| 56 | present_close_screen(ScreenPtr screen) |
| 57 | { |
| 58 | present_screen_priv_ptr screen_priv = present_screen_priv(screen); |
| 59 | |
| 60 | present_flip_destroy(screen); |
| 61 | |
| 62 | unwrap(screen_priv, screen, CloseScreen); |
| 63 | (*screen->CloseScreen) (screen); |
| 64 | free(screen_priv); |
| 65 | return TRUE; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * Free any queued presentations for this window |
| 70 | */ |
| 71 | static void |
| 72 | present_free_window_vblank(WindowPtr window) |
| 73 | { |
| 74 | present_window_priv_ptr window_priv = present_window_priv(window); |
| 75 | present_vblank_ptr vblank, tmp; |
| 76 | |
| 77 | xorg_list_for_each_entry_safe(vblank, tmp, &window_priv->vblank, window_list) { |
| 78 | present_abort_vblank(window->drawable.pScreen, vblank->crtc, vblank->event_id, vblank->target_msc); |
| 79 | present_vblank_destroy(vblank); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * Clean up any pending or current flips for this window |
| 85 | */ |
| 86 | static void |
| 87 | present_clear_window_flip(WindowPtr window) |
| 88 | { |
| 89 | ScreenPtr screen = window->drawable.pScreen; |
| 90 | present_screen_priv_ptr screen_priv = present_screen_priv(screen); |
| 91 | present_vblank_ptr flip_pending = screen_priv->flip_pending; |
| 92 | |
| 93 | if (flip_pending && flip_pending->window == window) { |
| 94 | assert (flip_pending->abort_flip); |
| 95 | flip_pending->window = NULL; |
| 96 | } |
| 97 | if (screen_priv->flip_window == window) |
| 98 | screen_priv->flip_window = NULL; |
| 99 | } |
| 100 | |
| 101 | /* |
| 102 | * Hook the close window function to clean up our window private |
| 103 | */ |
| 104 | static Bool |
| 105 | present_destroy_window(WindowPtr window) |
| 106 | { |
| 107 | Bool ret; |
| 108 | ScreenPtr screen = window->drawable.pScreen; |
| 109 | present_screen_priv_ptr screen_priv = present_screen_priv(screen); |
| 110 | present_window_priv_ptr window_priv = present_window_priv(window); |
| 111 | |
| 112 | if (window_priv) { |
| 113 | present_clear_window_notifies(window); |
| 114 | present_free_events(window); |
| 115 | present_free_window_vblank(window); |
| 116 | present_clear_window_flip(window); |
| 117 | free(window_priv); |
| 118 | } |
| 119 | unwrap(screen_priv, screen, DestroyWindow); |
| 120 | if (screen->DestroyWindow) |
| 121 | ret = screen->DestroyWindow (window); |
| 122 | else |
| 123 | ret = TRUE; |
| 124 | wrap(screen_priv, screen, DestroyWindow, present_destroy_window); |
| 125 | return ret; |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * Hook the config notify screen function to deliver present config notify events |
| 130 | */ |
| 131 | static int |
| 132 | present_config_notify(WindowPtr window, |
| 133 | int x, int y, int w, int h, int bw, |
| 134 | WindowPtr sibling) |
| 135 | { |
| 136 | int ret; |
| 137 | ScreenPtr screen = window->drawable.pScreen; |
| 138 | present_screen_priv_ptr screen_priv = present_screen_priv(screen); |
| 139 | |
| 140 | present_send_config_notify(window, x, y, w, h, bw, sibling); |
| 141 | |
| 142 | unwrap(screen_priv, screen, ConfigNotify); |
| 143 | if (screen->ConfigNotify) |
| 144 | ret = screen->ConfigNotify (window, x, y, w, h, bw, sibling); |
| 145 | else |
| 146 | ret = 0; |
| 147 | wrap(screen_priv, screen, ConfigNotify, present_config_notify); |
| 148 | return ret; |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Hook the clip notify screen function to un-flip as necessary |
| 153 | */ |
| 154 | |
| 155 | static void |
| 156 | present_clip_notify(WindowPtr window, int dx, int dy) |
| 157 | { |
| 158 | ScreenPtr screen = window->drawable.pScreen; |
| 159 | present_screen_priv_ptr screen_priv = present_screen_priv(screen); |
| 160 | |
| 161 | present_check_flip_window(window); |
| 162 | unwrap(screen_priv, screen, ClipNotify) |
| 163 | if (screen->ClipNotify) |
| 164 | screen->ClipNotify (window, dx, dy); |
| 165 | wrap(screen_priv, screen, ClipNotify, present_clip_notify); |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Initialize a screen for use with present |
| 170 | */ |
| 171 | int |
| 172 | present_screen_init(ScreenPtr screen, present_screen_info_ptr info) |
| 173 | { |
| 174 | if (!dixRegisterPrivateKey(&present_screen_private_key, PRIVATE_SCREEN, 0)) |
| 175 | return FALSE; |
| 176 | |
| 177 | if (!dixRegisterPrivateKey(&present_window_private_key, PRIVATE_WINDOW, 0)) |
| 178 | return FALSE; |
| 179 | |
| 180 | if (!present_screen_priv(screen)) { |
| 181 | present_screen_priv_ptr screen_priv = calloc(1, sizeof (present_screen_priv_rec)); |
| 182 | if (!screen_priv) |
| 183 | return FALSE; |
| 184 | |
| 185 | wrap(screen_priv, screen, CloseScreen, present_close_screen); |
| 186 | wrap(screen_priv, screen, DestroyWindow, present_destroy_window); |
| 187 | wrap(screen_priv, screen, ConfigNotify, present_config_notify); |
| 188 | wrap(screen_priv, screen, ClipNotify, present_clip_notify); |
| 189 | |
| 190 | screen_priv->info = info; |
| 191 | |
| 192 | dixSetPrivate(&screen->devPrivates, &present_screen_private_key, screen_priv); |
| 193 | |
| 194 | present_fake_screen_init(screen); |
| 195 | } |
| 196 | |
| 197 | return TRUE; |
| 198 | } |
| 199 | |
| 200 | /* |
| 201 | * Initialize the present extension |
| 202 | */ |
| 203 | void |
| 204 | present_extension_init(void) |
| 205 | { |
| 206 | ExtensionEntry *extension; |
| 207 | int i; |
| 208 | |
| 209 | #ifdef PANORAMIX |
| 210 | if (!noPanoramiXExtension) |
| 211 | return; |
| 212 | #endif |
| 213 | |
| 214 | extension = AddExtension(PRESENT_NAME, PresentNumberEvents, PresentNumberErrors, |
| 215 | proc_present_dispatch, sproc_present_dispatch, |
| 216 | NULL, StandardMinorOpcode); |
| 217 | if (!extension) |
| 218 | goto bail; |
| 219 | |
| 220 | present_request = extension->base; |
| 221 | |
| 222 | if (!present_init()) |
| 223 | goto bail; |
| 224 | |
| 225 | if (!present_event_init()) |
| 226 | goto bail; |
| 227 | |
| 228 | for (i = 0; i < screenInfo.numScreens; i++) { |
| 229 | if (!present_screen_init(screenInfo.screens[i], NULL)) |
| 230 | goto bail; |
| 231 | } |
| 232 | return; |
| 233 | |
| 234 | bail: |
| 235 | FatalError("Cannot initialize Present extension"); |
| 236 | } |