gst-libs/gst/vaapi/gstvaapiwindow_wayland.c

   1 /*
   2  *  gstvaapiwindow_wayland.c - VA/Wayland window abstraction
   3  *
   4  *  Copyright (C) 2012 Intel Corporation
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public License
   8  *  as published by the Free Software Foundation; either version 2.1
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free
  18  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * SECTION:gstvaapiwindow_wayland
  24  * @short_description: VA/Wayland window abstraction
  25  */
  26
  27 #include "sysdeps.h"
  28 #include <string.h>
  29 #include "gstvaapicompat.h"
  30 #include "gstvaapiwindow_wayland.h"
  31 #include "gstvaapidisplay_wayland.h"
  32 #include "gstvaapidisplay_wayland_priv.h"
  33 #include "gstvaapiutils.h"
  34 #include "gstvaapi_priv.h"
  35
  36 #define DEBUG 1
  37 #include "gstvaapidebug.h"
  38
  39 G_DEFINE_TYPE(GstVaapiWindowWayland,
  40               gst_vaapi_window_wayland,
  41               GST_VAAPI_TYPE_WINDOW);
  42
  43 #define GST_VAAPI_WINDOW_WAYLAND_GET_PRIVATE(obj)               \
  44     (G_TYPE_INSTANCE_GET_PRIVATE((obj),                         \
  45                                  GST_VAAPI_TYPE_WINDOW_WAYLAND, \
  46                                  GstVaapiWindowWaylandPrivate))
  47
  48 struct _GstVaapiWindowWaylandPrivate {
  49     struct wl_shell_surface    *shell_surface;
  50     struct wl_surface          *surface;
  51     struct wl_buffer           *buffer;
  52     guint                       redraw_pending  : 1;
  53 };
  54
  55 static gboolean
  56 gst_vaapi_window_wayland_show(GstVaapiWindow *window)
  57 {
  58     GST_WARNING("unimplemented GstVaapiWindowWayland::show()");
  59
  60     return TRUE;
  61 }
  62
  63 static gboolean
  64 gst_vaapi_window_wayland_hide(GstVaapiWindow *window)
  65 {
  66     GST_WARNING("unimplemented GstVaapiWindowWayland::hide()");
  67
  68     return TRUE;
  69 }
  70
  71 static void
  72 handle_ping(void *data, struct wl_shell_surface *shell_surface,
  73             uint32_t serial)
  74 {
  75     wl_shell_surface_pong(shell_surface, serial);
  76 }
  77
  78 static void
  79 handle_configure(void *data, struct wl_shell_surface *shell_surface,
  80                  uint32_t edges, int32_t width, int32_t height)
  81 {
  82 }
  83
  84 static void
  85 handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
  86 {
  87 }
  88
  89 static const struct wl_shell_surface_listener shell_surface_listener = {
  90     handle_ping,
  91     handle_configure,
  92     handle_popup_done
  93 };
  94
  95 static gboolean
  96 gst_vaapi_window_wayland_create(
  97     GstVaapiWindow *window,
  98     guint          *width,
  99     guint          *height
 100 )
 101 {
 102     GstVaapiWindowWaylandPrivate * const priv =
 103         GST_VAAPI_WINDOW_WAYLAND(window)->priv;
 104     GstVaapiDisplayWaylandPrivate * const priv_display =
 105         GST_VAAPI_OBJECT_DISPLAY_WAYLAND(window)->priv;
 106
 107     GST_DEBUG("create window, size %ux%u", *width, *height);
 108
 109     g_return_val_if_fail(priv_display->compositor != NULL, FALSE);
 110     g_return_val_if_fail(priv_display->shell != NULL, FALSE);
 111
 112     priv->surface = wl_compositor_create_surface(priv_display->compositor);
 113     if (!priv->surface)
 114         return FALSE;
 115
 116     priv->shell_surface =
 117         wl_shell_get_shell_surface(priv_display->shell, priv->surface);
 118     if (!priv->shell_surface)
 119         return FALSE;
 120
 121     wl_shell_surface_add_listener(priv->shell_surface,
 122                                   &shell_surface_listener, priv);
 123     wl_shell_surface_set_toplevel(priv->shell_surface);
 124     wl_shell_surface_set_fullscreen(
 125         priv->shell_surface,
 126         WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE,
 127         0,
 128         NULL
 129     );
 130
 131     priv->redraw_pending = FALSE;
 132     return TRUE;
 133 }
 134
 135 static void
 136 gst_vaapi_window_wayland_destroy(GstVaapiWindow * window)
 137 {
 138     GstVaapiWindowWaylandPrivate * const priv =
 139         GST_VAAPI_WINDOW_WAYLAND(window)->priv;
 140
 141     if (priv->shell_surface) {
 142         wl_shell_surface_destroy(priv->shell_surface);
 143         priv->shell_surface = NULL;
 144     }
 145
 146     if (priv->surface) {
 147         wl_surface_destroy(priv->surface);
 148         priv->surface = NULL;
 149     }
 150
 151     if (priv->buffer) {
 152         wl_buffer_destroy(priv->buffer);
 153         priv->buffer = NULL;
 154     }
 155 }
 156
 157 static gboolean
 158 gst_vaapi_window_wayland_resize(
 159     GstVaapiWindow * window,
 160     guint            width,
 161     guint            height
 162 )
 163 {
 164     GST_DEBUG("resize window, new size %ux%u", width, height);
 165     return TRUE;
 166 }
 167
 168 static void
 169 frame_redraw_callback(void *data, struct wl_callback *callback, uint32_t time)
 170 {
 171     GstVaapiWindowWaylandPrivate * const priv = data;
 172
 173     priv->redraw_pending = FALSE;
 174     wl_buffer_destroy(priv->buffer);
 175     priv->buffer = NULL;
 176     wl_callback_destroy(callback);
 177 }
 178
 179 static const struct wl_callback_listener frame_callback_listener = {
 180     frame_redraw_callback
 181 };
 182
 183 static gboolean
 184 gst_vaapi_window_wayland_render(
 185     GstVaapiWindow          *window,
 186     GstVaapiSurface         *surface,
 187     const GstVaapiRectangle *src_rect,
 188     const GstVaapiRectangle *dst_rect,
 189     guint                    flags
 190 )
 191 {
 192     GstVaapiWindowWaylandPrivate * const priv =
 193         GST_VAAPI_WINDOW_WAYLAND(window)->priv;
 194     GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(window);
 195     struct wl_display * const wl_display = GST_VAAPI_OBJECT_WL_DISPLAY(window);
 196     struct wl_buffer *buffer;
 197     struct wl_callback *callback;
 198     guint width, height, va_flags;
 199     VASurfaceID surface_id;
 200     VAStatus status;
 201
 202     /* XXX: use VPP to support unusual source and destination rectangles */
 203     gst_vaapi_surface_get_size(surface, &width, &height);
 204     if (src_rect->x      != 0     ||
 205         src_rect->y      != 0     ||
 206         src_rect->width  != width ||
 207         src_rect->height != height) {
 208         GST_ERROR("unsupported source rectangle for rendering");
 209         return FALSE;
 210     }
 211
 212     if (0 && (dst_rect->width != width || dst_rect->height != height)) {
 213         GST_ERROR("unsupported target rectangle for rendering");
 214         return FALSE;
 215     }
 216
 217     surface_id = GST_VAAPI_OBJECT_ID(surface);
 218     if (surface_id == VA_INVALID_ID)
 219         return FALSE;
 220
 221     GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
 222
 223     /* Wait for the previous frame to complete redraw */
 224     if (priv->redraw_pending)
 225         wl_display_iterate(wl_display, WL_DISPLAY_READABLE);
 226
 227     /* XXX: use VA/VPP for other filters */
 228     va_flags = from_GstVaapiSurfaceRenderFlags(flags);
 229     status = vaGetSurfaceBufferWl(
 230         GST_VAAPI_DISPLAY_VADISPLAY(display),
 231         surface_id,
 232         va_flags & (VA_TOP_FIELD|VA_BOTTOM_FIELD),
 233         &buffer
 234     );
 235     if (status == VA_STATUS_ERROR_FLAG_NOT_SUPPORTED) {
 236         /* XXX: de-interlacing flags not supported, try with VPP? */
 237         status = vaGetSurfaceBufferWl(
 238             GST_VAAPI_DISPLAY_VADISPLAY(display),
 239             surface_id,
 240             VA_FRAME_PICTURE,
 241             &buffer
 242         );
 243     }
 244     if (!vaapi_check_status(status, "vaGetSurfaceBufferWl()"))
 245         return FALSE;
 246
 247     /* XXX: attach to the specified target rectangle */
 248     wl_surface_attach(priv->surface, buffer, 0, 0);
 249     wl_surface_damage(priv->surface, 0, 0, width, height);
 250
 251     wl_display_iterate(wl_display, WL_DISPLAY_WRITABLE);
 252     priv->redraw_pending = TRUE;
 253     priv->buffer = buffer;
 254
 255     callback = wl_surface_frame(priv->surface);
 256     wl_callback_add_listener(callback, &frame_callback_listener, priv);
 257     GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
 258     return TRUE;
 259 }
 260
 261 static void
 262 gst_vaapi_window_wayland_finalize(GObject *object)
 263 {
 264     G_OBJECT_CLASS(gst_vaapi_window_wayland_parent_class)->finalize(object);
 265 }
 266
 267 static void
 268 gst_vaapi_window_wayland_constructed(GObject *object)
 269 {
 270     GObjectClass *parent_class;
 271
 272     parent_class = G_OBJECT_CLASS(gst_vaapi_window_wayland_parent_class);
 273     if (parent_class->constructed)
 274         parent_class->constructed(object);
 275 }
 276
 277 static void
 278 gst_vaapi_window_wayland_class_init(GstVaapiWindowWaylandClass * klass)
 279 {
 280     GObjectClass * const object_class = G_OBJECT_CLASS(klass);
 281     GstVaapiWindowClass * const window_class = GST_VAAPI_WINDOW_CLASS(klass);
 282
 283     g_type_class_add_private(klass, sizeof(GstVaapiWindowWaylandPrivate));
 284
 285     object_class->finalize      = gst_vaapi_window_wayland_finalize;
 286     object_class->constructed   = gst_vaapi_window_wayland_constructed;
 287
 288     window_class->create        = gst_vaapi_window_wayland_create;
 289     window_class->destroy       = gst_vaapi_window_wayland_destroy;
 290     window_class->show          = gst_vaapi_window_wayland_show;
 291     window_class->hide          = gst_vaapi_window_wayland_hide;
 292     window_class->render        = gst_vaapi_window_wayland_render;
 293     window_class->resize        = gst_vaapi_window_wayland_resize;
 294 }
 295
 296 static void
 297 gst_vaapi_window_wayland_init(GstVaapiWindowWayland * window)
 298 {
 299     GstVaapiWindowWaylandPrivate *priv =
 300         GST_VAAPI_WINDOW_WAYLAND_GET_PRIVATE(window);
 301
 302     window->priv         = priv;
 303     priv->shell_surface  = NULL;
 304     priv->surface        = NULL;
 305     priv->buffer         = NULL;
 306     priv->redraw_pending = FALSE;
 307 }
 308
 309 /**
 310  * gst_vaapi_window_wayland_new:
 311  * @display: a #GstVaapiDisplay
 312  * @width: the requested window width, in pixels
 313  * @height: the requested windo height, in pixels
 314  *
 315  * Creates a window with the specified @width and @height. The window
 316  * will be attached to the @display and remains invisible to the user
 317  * until gst_vaapi_window_show() is called.
 318  *
 319  * Return value: the newly allocated #GstVaapiWindow object
 320  */
 321 GstVaapiWindow *
 322 gst_vaapi_window_wayland_new(
 323     GstVaapiDisplay *display,
 324     guint            width,
 325     guint            height
 326 )
 327 {
 328     GST_DEBUG("new window, size %ux%u", width, height);
 329
 330     g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
 331     g_return_val_if_fail(width  > 0, NULL);
 332     g_return_val_if_fail(height > 0, NULL);
 333
 334     return g_object_new(GST_VAAPI_TYPE_WINDOW_WAYLAND,
 335                         "display", display,
 336                         "id",      GST_VAAPI_ID(0),
 337                         "width",   width,
 338                         "height",  height,
 339                         NULL);
 340 }