gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  Copyright (C) 2010-2011 Splitted-Desktop Systems
   5  *  Copyright (C) 2011-2013 Intel Corporation
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Lesser General Public License
   9  *  as published by the Free Software Foundation; either version 2.1
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Lesser General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Lesser General Public
  18  *  License along with this library; if not, write to the Free
  19  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  *  Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * SECTION:gstvaapisink
  25  * @short_description: A VA-API based videosink
  26  *
  27  * vaapisink renders video frames to a drawable (X #Window) on a local
  28  * display using the Video Acceleration (VA) API. The element will
  29  * create its own internal window and render into it.
  30  */
  31
  32 #include "gst/vaapi/sysdeps.h"
  33 #include <gst/gst.h>
  34 #include <gst/video/video.h>
  35 #include <gst/video/videocontext.h>
  36 #include <gst/vaapi/gstvaapivalue.h>
  37 #if USE_DRM
  38 # include <gst/vaapi/gstvaapidisplay_drm.h>
  39 #endif
  40 #if USE_X11
  41 # include <gst/vaapi/gstvaapidisplay_x11.h>
  42 # include <gst/vaapi/gstvaapiwindow_x11.h>
  43 #endif
  44 #if USE_GLX
  45 # include <gst/vaapi/gstvaapidisplay_glx.h>
  46 # include <gst/vaapi/gstvaapiwindow_glx.h>
  47 #endif
  48 #if USE_WAYLAND
  49 # include <gst/vaapi/gstvaapidisplay_wayland.h>
  50 # include <gst/vaapi/gstvaapiwindow_wayland.h>
  51 #endif
  52
  53 /* Supported interfaces */
  54 #if GST_CHECK_VERSION(1,0,0)
  55 # include <gst/video/videooverlay.h>
  56 #else
  57 # include <gst/interfaces/xoverlay.h>
  58
  59 # define GST_TYPE_VIDEO_OVERLAY         GST_TYPE_X_OVERLAY
  60 # define GST_VIDEO_OVERLAY              GST_X_OVERLAY
  61 # define GstVideoOverlay                GstXOverlay
  62 # define GstVideoOverlayInterface       GstXOverlayClass
  63
  64 # define gst_video_overlay_prepare_window_handle(sink) \
  65     gst_x_overlay_prepare_xwindow_id(sink)
  66 # define gst_video_overlay_got_window_handle(sink, window_handle) \
  67     gst_x_overlay_got_window_handle(sink, window_handle)
  68 #endif
  69
  70 #include "gstvaapisink.h"
  71 #include "gstvaapipluginutil.h"
  72 #include "gstvaapivideometa.h"
  73 #if GST_CHECK_VERSION(1,0,0)
  74 #include "gstvaapivideobufferpool.h"
  75 #include "gstvaapivideomemory.h"
  76 #endif
  77
  78 #define GST_PLUGIN_NAME "vaapisink"
  79 #define GST_PLUGIN_DESC "A VA-API based videosink"
  80
  81 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  82 #define GST_CAT_DEFAULT gst_debug_vaapisink
  83
  84 /* Default template */
  85 static const char gst_vaapisink_sink_caps_str[] =
  86 #if GST_CHECK_VERSION(1,0,0)
  87     GST_VIDEO_CAPS_MAKE(GST_VIDEO_FORMATS_ALL) "; "
  88 #else
  89     "video/x-raw-yuv, "
  90     "width  = (int) [ 1, MAX ], "
  91     "height = (int) [ 1, MAX ]; "
  92 #endif
  93     GST_VAAPI_SURFACE_CAPS;
  94
  95 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  96     GST_STATIC_PAD_TEMPLATE(
  97         "sink",
  98         GST_PAD_SINK,
  99         GST_PAD_ALWAYS,
 100         GST_STATIC_CAPS(gst_vaapisink_sink_caps_str));
 101
 102 /* GstImplementsInterface interface */
 103 #if !GST_CHECK_VERSION(1,0,0)
 104 static gboolean
 105 gst_vaapisink_implements_interface_supported(
 106     GstImplementsInterface *iface,
 107     GType                   type
 108 )
 109 {
 110     return (type == GST_TYPE_VIDEO_CONTEXT ||
 111             type == GST_TYPE_VIDEO_OVERLAY);
 112 }
 113
 114 static void
 115 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 116 {
 117     iface->supported = gst_vaapisink_implements_interface_supported;
 118 }
 119 #endif
 120
 121 /* GstVideoContext interface */
 122 static void
 123 gst_vaapisink_set_video_context(GstVideoContext *context, const gchar *type,
 124     const GValue *value)
 125 {
 126   GstVaapiSink *sink = GST_VAAPISINK (context);
 127   gst_vaapi_set_display (type, value, &sink->display);
 128 }
 129
 130 static void
 131 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface)
 132 {
 133     iface->set_context = gst_vaapisink_set_video_context;
 134 }
 135
 136 static void
 137 gst_vaapisink_video_overlay_iface_init(GstVideoOverlayInterface *iface);
 138
 139 G_DEFINE_TYPE_WITH_CODE(
 140     GstVaapiSink,
 141     gst_vaapisink,
 142     GST_TYPE_VIDEO_SINK,
 143 #if !GST_CHECK_VERSION(1,0,0)
 144     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
 145                           gst_vaapisink_implements_iface_init);
 146 #endif
 147     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_CONTEXT,
 148                           gst_vaapisink_video_context_iface_init);
 149     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_OVERLAY,
 150                           gst_vaapisink_video_overlay_iface_init))
 151
 152 enum {
 153     PROP_0,
 154
 155     PROP_DISPLAY_TYPE,
 156     PROP_FULLSCREEN,
 157     PROP_SYNCHRONOUS,
 158     PROP_USE_GLX,
 159     PROP_USE_REFLECTION,
 160     PROP_ROTATION,
 161 };
 162
 163 #define DEFAULT_DISPLAY_TYPE            GST_VAAPI_DISPLAY_TYPE_ANY
 164 #define DEFAULT_ROTATION                GST_VAAPI_ROTATION_0
 165
 166 /* GstVideoOverlay interface */
 167
 168 #if USE_X11
 169 static gboolean
 170 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 171 #endif
 172
 173 static GstFlowReturn
 174 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 175
 176 static void
 177 gst_vaapisink_video_overlay_set_window_handle(GstVideoOverlay *overlay, guintptr window)
 178 {
 179     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 180
 181     /* Disable GLX rendering when vaapisink is using a foreign X
 182        window. It's pretty much useless */
 183     if (sink->display_type == GST_VAAPI_DISPLAY_TYPE_GLX)
 184         sink->display_type = GST_VAAPI_DISPLAY_TYPE_X11;
 185
 186     sink->foreign_window = TRUE;
 187
 188     switch (sink->display_type) {
 189 #if USE_X11
 190     case GST_VAAPI_DISPLAY_TYPE_X11:
 191         gst_vaapisink_ensure_window_xid(sink, window);
 192         break;
 193 #endif
 194     default:
 195         break;
 196     }
 197 }
 198
 199 static void
 200 gst_vaapisink_video_overlay_set_render_rectangle(
 201     GstVideoOverlay *overlay,
 202     gint         x,
 203     gint         y,
 204     gint         width,
 205     gint         height
 206 )
 207 {
 208     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 209     GstVaapiRectangle * const display_rect = &sink->display_rect;
 210
 211     display_rect->x      = x;
 212     display_rect->y      = y;
 213     display_rect->width  = width;
 214     display_rect->height = height;
 215
 216     GST_DEBUG("render rect (%d,%d):%ux%u",
 217               display_rect->x, display_rect->y,
 218               display_rect->width, display_rect->height);
 219 }
 220
 221 static void
 222 gst_vaapisink_video_overlay_expose(GstVideoOverlay *overlay)
 223 {
 224     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 225     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 226     GstBuffer *buffer;
 227
 228     if (sink->use_overlay)
 229         buffer = sink->video_buffer ? gst_buffer_ref(sink->video_buffer) : NULL;
 230     else {
 231 #if GST_CHECK_VERSION(1,0,0)
 232         GstSample * const sample = gst_base_sink_get_last_sample(base_sink);
 233         if (!sample)
 234             return;
 235         buffer = gst_buffer_ref(gst_sample_get_buffer(sample));
 236         gst_sample_unref(sample);
 237 #else
 238         buffer = gst_base_sink_get_last_buffer(base_sink);
 239 #endif
 240     }
 241     if (buffer) {
 242         gst_vaapisink_show_frame(base_sink, buffer);
 243         gst_buffer_unref(buffer);
 244     }
 245 }
 246
 247 static void
 248 gst_vaapisink_video_overlay_iface_init(GstVideoOverlayInterface *iface)
 249 {
 250     iface->set_window_handle    = gst_vaapisink_video_overlay_set_window_handle;
 251     iface->set_render_rectangle = gst_vaapisink_video_overlay_set_render_rectangle;
 252     iface->expose               = gst_vaapisink_video_overlay_expose;
 253 }
 254
 255 static void
 256 gst_vaapisink_destroy(GstVaapiSink *sink)
 257 {
 258     gst_buffer_replace(&sink->video_buffer, NULL);
 259 #if USE_GLX
 260     gst_vaapi_texture_replace(&sink->texture, NULL);
 261 #endif
 262     gst_vaapi_display_replace(&sink->display, NULL);
 263     g_clear_object(&sink->uploader);
 264
 265     gst_caps_replace(&sink->caps, NULL);
 266 }
 267
 268 #if USE_X11
 269 /* Checks whether a ConfigureNotify event is in the queue */
 270 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 271 struct _ConfigureNotifyEventPendingArgs {
 272     Window      window;
 273     guint       width;
 274     guint       height;
 275     gboolean    match;
 276 };
 277
 278 static Bool
 279 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 280 {
 281     ConfigureNotifyEventPendingArgs * const args =
 282         (ConfigureNotifyEventPendingArgs *)arg;
 283
 284     if (xev->type == ConfigureNotify &&
 285         xev->xconfigure.window == args->window &&
 286         xev->xconfigure.width  == args->width  &&
 287         xev->xconfigure.height == args->height)
 288         args->match = TRUE;
 289
 290     /* XXX: this is a hack to traverse the whole queue because we
 291        can't use XPeekIfEvent() since it could block */
 292     return False;
 293 }
 294
 295 static gboolean
 296 configure_notify_event_pending(
 297     GstVaapiSink *sink,
 298     Window        window,
 299     guint         width,
 300     guint         height
 301 )
 302 {
 303     ConfigureNotifyEventPendingArgs args;
 304     XEvent xev;
 305
 306     args.window = window;
 307     args.width  = width;
 308     args.height = height;
 309     args.match  = FALSE;
 310
 311     /* XXX: don't use XPeekIfEvent() because it might block */
 312     XCheckIfEvent(
 313         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 314         &xev,
 315         configure_notify_event_pending_cb, (XPointer)&args
 316     );
 317     return args.match;
 318 }
 319 #endif
 320
 321 static const gchar *
 322 get_display_type_name(GstVaapiDisplayType display_type)
 323 {
 324     gpointer const klass = g_type_class_peek(GST_VAAPI_TYPE_DISPLAY_TYPE);
 325     GEnumValue * const e = g_enum_get_value(klass, display_type);
 326
 327     if (e)
 328         return e->value_name;
 329     return "<unknown-type>";
 330 }
 331
 332 static inline gboolean
 333 gst_vaapisink_ensure_display(GstVaapiSink *sink)
 334 {
 335     GstVaapiDisplayType display_type;
 336     GstVaapiRenderMode render_mode;
 337     const gboolean had_display = sink->display != NULL;
 338
 339     if (!gst_vaapi_ensure_display(sink, sink->display_type, &sink->display))
 340         return FALSE;
 341
 342     display_type = gst_vaapi_display_get_display_type(sink->display);
 343     if (display_type != sink->display_type || (!had_display && sink->display)) {
 344         GST_INFO("created %s %p", get_display_type_name(display_type),
 345             sink->display);
 346         sink->display_type = display_type;
 347
 348         sink->use_overlay =
 349             gst_vaapi_display_get_render_mode(sink->display, &render_mode) &&
 350             render_mode == GST_VAAPI_RENDER_MODE_OVERLAY;
 351         GST_DEBUG("use %s rendering mode", sink->use_overlay ? "overlay" : "texture");
 352
 353         sink->use_rotation = gst_vaapi_display_has_property(
 354             sink->display, GST_VAAPI_DISPLAY_PROP_ROTATION);
 355     }
 356     return TRUE;
 357 }
 358
 359 static gboolean
 360 gst_vaapisink_ensure_uploader(GstVaapiSink *sink)
 361 {
 362     if (!gst_vaapisink_ensure_display(sink))
 363         return FALSE;
 364
 365     if (!sink->uploader) {
 366         sink->uploader = gst_vaapi_uploader_new(sink->display);
 367         if (!sink->uploader)
 368             return FALSE;
 369     }
 370     return TRUE;
 371 }
 372
 373 static gboolean
 374 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 375 {
 376     GstVaapiRectangle * const display_rect = &sink->display_rect;
 377     guint num, den, display_par_n, display_par_d;
 378     gboolean success;
 379
 380     /* Return success if caps are not set yet */
 381     if (!sink->caps)
 382         return TRUE;
 383
 384     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 385
 386     gst_vaapi_display_get_pixel_aspect_ratio(
 387         sink->display,
 388         &display_par_n, &display_par_d
 389     );
 390     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 391               display_par_n, display_par_d);
 392
 393     success = gst_video_calculate_display_ratio(
 394         &num, &den,
 395         sink->video_width, sink->video_height,
 396         sink->video_par_n, sink->video_par_d,
 397         display_par_n, display_par_d
 398     );
 399     if (!success)
 400         return FALSE;
 401     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 402               sink->video_width, sink->video_height, num, den);
 403
 404     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 405     if (display_rect->width <= width) {
 406         GST_DEBUG("keeping window height");
 407         display_rect->height = height;
 408     }
 409     else {
 410         GST_DEBUG("keeping window width");
 411         display_rect->width  = width;
 412         display_rect->height =
 413             gst_util_uint64_scale_int(width, den, num);
 414     }
 415     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 416
 417     g_assert(display_rect->width  <= width);
 418     g_assert(display_rect->height <= height);
 419
 420     display_rect->x = (width  - display_rect->width)  / 2;
 421     display_rect->y = (height - display_rect->height) / 2;
 422
 423     GST_DEBUG("render rect (%d,%d):%ux%u",
 424               display_rect->x, display_rect->y,
 425               display_rect->width, display_rect->height);
 426     return TRUE;
 427 }
 428
 429 static void
 430 gst_vaapisink_ensure_window_size(GstVaapiSink *sink, guint *pwidth, guint *pheight)
 431 {
 432     GstVideoRectangle src_rect, dst_rect, out_rect;
 433     guint num, den, display_width, display_height, display_par_n, display_par_d;
 434     gboolean success, scale;
 435
 436     if (sink->foreign_window) {
 437         *pwidth  = sink->window_width;
 438         *pheight = sink->window_height;
 439         return;
 440     }
 441
 442     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 443     if (sink->fullscreen) {
 444         *pwidth  = display_width;
 445         *pheight = display_height;
 446         return;
 447     }
 448
 449     gst_vaapi_display_get_pixel_aspect_ratio(
 450         sink->display,
 451         &display_par_n, &display_par_d
 452     );
 453
 454     success = gst_video_calculate_display_ratio(
 455         &num, &den,
 456         sink->video_width, sink->video_height,
 457         sink->video_par_n, sink->video_par_d,
 458         display_par_n, display_par_d
 459     );
 460     if (!success) {
 461         num = sink->video_par_n;
 462         den = sink->video_par_d;
 463     }
 464
 465     src_rect.x = 0;
 466     src_rect.y = 0;
 467     src_rect.w = gst_util_uint64_scale_int(sink->video_height, num, den);
 468     src_rect.h = sink->video_height;
 469     dst_rect.x = 0;
 470     dst_rect.y = 0;
 471     dst_rect.w = display_width;
 472     dst_rect.h = display_height;
 473     scale      = (src_rect.w > dst_rect.w || src_rect.h > dst_rect.h);
 474     gst_video_sink_center_rect(src_rect, dst_rect, &out_rect, scale);
 475     *pwidth    = out_rect.w;
 476     *pheight   = out_rect.h;
 477 }
 478
 479 static inline gboolean
 480 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 481 {
 482     GstVaapiDisplay * const display = sink->display;
 483
 484     if (!sink->window) {
 485         switch (sink->display_type) {
 486 #if USE_GLX
 487         case GST_VAAPI_DISPLAY_TYPE_GLX:
 488             sink->window = gst_vaapi_window_glx_new(display, width, height);
 489             goto notify_video_overlay_interface;
 490 #endif
 491 #if USE_X11
 492         case GST_VAAPI_DISPLAY_TYPE_X11:
 493             sink->window = gst_vaapi_window_x11_new(display, width, height);
 494         notify_video_overlay_interface:
 495             if (!sink->window)
 496                 break;
 497             gst_video_overlay_got_window_handle(
 498                 GST_VIDEO_OVERLAY(sink),
 499                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 500             );
 501             break;
 502 #endif
 503 #if USE_WAYLAND
 504         case GST_VAAPI_DISPLAY_TYPE_WAYLAND:
 505             sink->window = gst_vaapi_window_wayland_new(display, width, height);
 506             break;
 507 #endif
 508         default:
 509             GST_ERROR("unsupported display type %d", sink->display_type);
 510             return FALSE;
 511         }
 512     }
 513     return sink->window != NULL;
 514 }
 515
 516 #if USE_X11
 517 static gboolean
 518 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 519 {
 520     Window rootwin;
 521     unsigned int width, height, border_width, depth;
 522     int x, y;
 523     XID xid = window_id;
 524
 525     if (!gst_vaapisink_ensure_display(sink))
 526         return FALSE;
 527
 528     gst_vaapi_display_lock(sink->display);
 529     XGetGeometry(
 530         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 531         xid,
 532         &rootwin,
 533         &x, &y, &width, &height, &border_width, &depth
 534     );
 535     gst_vaapi_display_unlock(sink->display);
 536
 537     if ((width != sink->window_width || height != sink->window_height) &&
 538         !configure_notify_event_pending(sink, xid, width, height)) {
 539         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 540             return FALSE;
 541         sink->window_width  = width;
 542         sink->window_height = height;
 543     }
 544
 545     if (sink->window &&
 546         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 547         return TRUE;
 548
 549     gst_vaapi_window_replace(&sink->window, NULL);
 550
 551     switch (sink->display_type) {
 552 #if USE_GLX
 553     case GST_VAAPI_DISPLAY_TYPE_GLX:
 554         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 555         break;
 556 #endif
 557     case GST_VAAPI_DISPLAY_TYPE_X11:
 558         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 559         break;
 560     default:
 561         GST_ERROR("unsupported display type %d", sink->display_type);
 562         return FALSE;
 563     }
 564     return sink->window != NULL;
 565 }
 566 #endif
 567
 568 static gboolean
 569 gst_vaapisink_ensure_rotation(GstVaapiSink *sink, gboolean recalc_display_rect)
 570 {
 571     gboolean success = FALSE;
 572
 573     g_return_val_if_fail(sink->display, FALSE);
 574
 575     if (sink->rotation == sink->rotation_req)
 576         return TRUE;
 577
 578     if (!sink->use_rotation) {
 579         GST_WARNING("VA display does not support rotation");
 580         goto end;
 581     }
 582
 583     gst_vaapi_display_lock(sink->display);
 584     success = gst_vaapi_display_set_rotation(sink->display, sink->rotation_req);
 585     gst_vaapi_display_unlock(sink->display);
 586     if (!success) {
 587         GST_ERROR("failed to change VA display rotation mode");
 588         goto end;
 589     }
 590
 591     if (((sink->rotation + sink->rotation_req) % 180) == 90) {
 592         /* Orientation changed */
 593         G_PRIMITIVE_SWAP(guint, sink->video_width, sink->video_height);
 594         G_PRIMITIVE_SWAP(gint, sink->video_par_n, sink->video_par_d);
 595     }
 596
 597     if (recalc_display_rect && !sink->foreign_window)
 598         gst_vaapisink_ensure_render_rect(sink, sink->window_width,
 599             sink->window_height);
 600     success = TRUE;
 601
 602 end:
 603     sink->rotation = sink->rotation_req;
 604     return success;
 605 }
 606
 607 static gboolean
 608 gst_vaapisink_ensure_video_buffer_pool(GstVaapiSink *sink, GstCaps *caps)
 609 {
 610 #if GST_CHECK_VERSION(1,0,0)
 611     GstBufferPool *pool;
 612     GstCaps *pool_caps;
 613     GstStructure *config;
 614     GstVideoInfo vi;
 615     gboolean need_pool;
 616
 617     if (!gst_vaapisink_ensure_display(sink))
 618         return FALSE;
 619
 620     if (sink->video_buffer_pool) {
 621         config = gst_buffer_pool_get_config(sink->video_buffer_pool);
 622         gst_buffer_pool_config_get_params(config, &pool_caps, NULL, NULL, NULL);
 623         need_pool = !gst_caps_is_equal(caps, pool_caps);
 624         gst_structure_free(config);
 625         if (!need_pool)
 626             return TRUE;
 627         g_clear_object(&sink->video_buffer_pool);
 628         sink->video_buffer_size = 0;
 629     }
 630
 631     pool = gst_vaapi_video_buffer_pool_new(sink->display);
 632     if (!pool)
 633         goto error_create_pool;
 634
 635     gst_video_info_init(&vi);
 636     gst_video_info_from_caps(&vi, caps);
 637     if (GST_VIDEO_INFO_FORMAT(&vi) == GST_VIDEO_FORMAT_ENCODED) {
 638         GST_DEBUG("assume video buffer pool format is NV12");
 639         gst_video_info_set_format(&vi, GST_VIDEO_FORMAT_NV12,
 640             GST_VIDEO_INFO_WIDTH(&vi), GST_VIDEO_INFO_HEIGHT(&vi));
 641     }
 642     sink->video_buffer_size = vi.size;
 643
 644     config = gst_buffer_pool_get_config(pool);
 645     gst_buffer_pool_config_set_params(config, caps, sink->video_buffer_size,
 646         0, 0);
 647     gst_buffer_pool_config_add_option(config,
 648         GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META);
 649     if (!gst_buffer_pool_set_config(pool, config))
 650         goto error_pool_config;
 651     sink->video_buffer_pool = pool;
 652     return TRUE;
 653
 654     /* ERRORS */
 655 error_create_pool:
 656     {
 657         GST_ERROR("failed to create buffer pool");
 658         return FALSE;
 659     }
 660 error_pool_config:
 661     {
 662         GST_ERROR("failed to reset buffer pool config");
 663         gst_object_unref(pool);
 664         return FALSE;
 665     }
 666 #else
 667     return TRUE;
 668 #endif
 669 }
 670
 671 static gboolean
 672 gst_vaapisink_start(GstBaseSink *base_sink)
 673 {
 674     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 675
 676     if (!gst_vaapisink_ensure_display(sink))
 677         return FALSE;
 678
 679     sink->uploader = gst_vaapi_uploader_new(sink->display);
 680     if (!sink->uploader)
 681         return FALSE;
 682     return TRUE;
 683 }
 684
 685 static gboolean
 686 gst_vaapisink_stop(GstBaseSink *base_sink)
 687 {
 688     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 689
 690     gst_buffer_replace(&sink->video_buffer, NULL);
 691 #if GST_CHECK_VERSION(1,0,0)
 692     g_clear_object(&sink->video_buffer_pool);
 693 #endif
 694     gst_vaapi_window_replace(&sink->window, NULL);
 695     gst_vaapi_display_replace(&sink->display, NULL);
 696     g_clear_object(&sink->uploader);
 697
 698     return TRUE;
 699 }
 700
 701 static GstCaps *
 702 gst_vaapisink_get_caps_impl(GstBaseSink *base_sink)
 703 {
 704     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 705     GstCaps *out_caps, *yuv_caps;
 706
 707     out_caps = gst_caps_from_string(GST_VAAPI_SURFACE_CAPS);
 708     if (!out_caps)
 709         return NULL;
 710
 711     if (gst_vaapisink_ensure_uploader(sink)) {
 712         yuv_caps = gst_vaapi_uploader_get_caps(sink->uploader);
 713         if (yuv_caps)
 714             gst_caps_append(out_caps, gst_caps_copy(yuv_caps));
 715     }
 716     return out_caps;
 717 }
 718
 719 #if GST_CHECK_VERSION(1,0,0)
 720 static inline GstCaps *
 721 gst_vaapisink_get_caps(GstBaseSink *base_sink, GstCaps *filter)
 722 {
 723     return gst_vaapisink_get_caps_impl(base_sink);
 724 }
 725 #else
 726 #define gst_vaapisink_get_caps gst_vaapisink_get_caps_impl
 727 #endif
 728
 729 static gboolean
 730 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 731 {
 732     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 733     GstVideoInfo vi;
 734     guint win_width, win_height;
 735
 736 #if USE_DRM
 737     if (sink->display_type == GST_VAAPI_DISPLAY_TYPE_DRM)
 738         return TRUE;
 739 #endif
 740
 741     if (!gst_vaapisink_ensure_video_buffer_pool(sink, caps))
 742         return FALSE;
 743
 744     if (!gst_video_info_from_caps(&vi, caps))
 745         return FALSE;
 746     sink->use_video_raw = GST_VIDEO_INFO_IS_YUV(&vi);
 747     sink->video_width   = GST_VIDEO_INFO_WIDTH(&vi);
 748     sink->video_height  = GST_VIDEO_INFO_HEIGHT(&vi);
 749     sink->video_par_n   = GST_VIDEO_INFO_PAR_N(&vi);
 750     sink->video_par_d   = GST_VIDEO_INFO_PAR_D(&vi);
 751     GST_DEBUG("video pixel-aspect-ratio %d/%d",
 752               sink->video_par_n, sink->video_par_d);
 753
 754     gst_caps_replace(&sink->caps, caps);
 755
 756     if (!gst_vaapisink_ensure_display(sink))
 757         return FALSE;
 758
 759     gst_vaapisink_ensure_rotation(sink, FALSE);
 760
 761     gst_vaapisink_ensure_window_size(sink, &win_width, &win_height);
 762     if (sink->window) {
 763         if (!sink->foreign_window || sink->fullscreen)
 764             gst_vaapi_window_set_size(sink->window, win_width, win_height);
 765     }
 766     else {
 767         gst_vaapi_display_lock(sink->display);
 768         gst_video_overlay_prepare_window_handle(GST_VIDEO_OVERLAY(sink));
 769         gst_vaapi_display_unlock(sink->display);
 770         if (sink->window)
 771             return TRUE;
 772         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 773             return FALSE;
 774         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 775         gst_vaapi_window_show(sink->window);
 776         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 777     }
 778     sink->window_width  = win_width;
 779     sink->window_height = win_height;
 780     GST_DEBUG("window size %ux%u", win_width, win_height);
 781
 782     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 783 }
 784
 785 #if USE_GLX
 786 static void
 787 render_background(GstVaapiSink *sink)
 788 {
 789     /* Original code from Mirco Muller (MacSlow):
 790        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 791     GLfloat fStartX = 0.0f;
 792     GLfloat fStartY = 0.0f;
 793     GLfloat fWidth  = (GLfloat)sink->window_width;
 794     GLfloat fHeight = (GLfloat)sink->window_height;
 795
 796     glClear(GL_COLOR_BUFFER_BIT);
 797     glBegin(GL_QUADS);
 798     {
 799         /* top third, darker grey to white */
 800         glColor3f(0.85f, 0.85f, 0.85f);
 801         glVertex3f(fStartX, fStartY, 0.0f);
 802         glColor3f(0.85f, 0.85f, 0.85f);
 803         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 804         glColor3f(1.0f, 1.0f, 1.0f);
 805         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 806         glColor3f(1.0f, 1.0f, 1.0f);
 807         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 808
 809         /* middle third, just plain white */
 810         glColor3f(1.0f, 1.0f, 1.0f);
 811         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 812         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 813         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 814         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 815
 816         /* bottom third, white to lighter grey */
 817         glColor3f(1.0f, 1.0f, 1.0f);
 818         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 819         glColor3f(1.0f, 1.0f, 1.0f);
 820         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 821         glColor3f(0.62f, 0.66f, 0.69f);
 822         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 823         glColor3f(0.62f, 0.66f, 0.69f);
 824         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 825     }
 826     glEnd();
 827 }
 828
 829 static void
 830 render_frame(GstVaapiSink *sink)
 831 {
 832     const guint x1 = sink->display_rect.x;
 833     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 834     const guint y1 = sink->display_rect.y;
 835     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 836
 837     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 838     glBegin(GL_QUADS);
 839     {
 840         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 841         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 842         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 843         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 844     }
 845     glEnd();
 846 }
 847
 848 static void
 849 render_reflection(GstVaapiSink *sink)
 850 {
 851     const guint x1 = sink->display_rect.x;
 852     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 853     const guint y1 = sink->display_rect.y;
 854     const guint rh = sink->display_rect.height / 5;
 855     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 856
 857     glBegin(GL_QUADS);
 858     {
 859         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 860         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 861         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 862
 863         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 864         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 865         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 866     }
 867     glEnd();
 868 }
 869
 870 static gboolean
 871 gst_vaapisink_show_frame_glx(
 872     GstVaapiSink    *sink,
 873     GstVaapiSurface *surface,
 874     guint            flags
 875 )
 876 {
 877     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 878     GLenum target;
 879     GLuint texture;
 880
 881     gst_vaapi_window_glx_make_current(window);
 882     if (!sink->texture) {
 883         sink->texture = gst_vaapi_texture_new(
 884             sink->display,
 885             GL_TEXTURE_2D,
 886             GL_BGRA,
 887             sink->video_width,
 888             sink->video_height
 889         );
 890         if (!sink->texture)
 891             goto error_create_texture;
 892     }
 893     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 894         goto error_transfer_surface;
 895
 896     target  = gst_vaapi_texture_get_target(sink->texture);
 897     texture = gst_vaapi_texture_get_id(sink->texture);
 898     if (target != GL_TEXTURE_2D || !texture)
 899         return FALSE;
 900
 901     if (sink->use_reflection)
 902         render_background(sink);
 903
 904     glEnable(target);
 905     glBindTexture(target, texture);
 906     {
 907         if (sink->use_reflection) {
 908             glPushMatrix();
 909             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 910             glTranslatef(50.0f, 0.0f, 0.0f);
 911         }
 912         render_frame(sink);
 913         if (sink->use_reflection) {
 914             glPushMatrix();
 915             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 916             render_reflection(sink);
 917             glPopMatrix();
 918             glPopMatrix();
 919         }
 920     }
 921     glBindTexture(target, 0);
 922     glDisable(target);
 923     gst_vaapi_window_glx_swap_buffers(window);
 924     return TRUE;
 925
 926     /* ERRORS */
 927 error_create_texture:
 928     {
 929         GST_DEBUG("could not create VA/GLX texture");
 930         return FALSE;
 931     }
 932 error_transfer_surface:
 933     {
 934         GST_DEBUG("could not transfer VA surface to texture");
 935         return FALSE;
 936     }
 937 }
 938 #endif
 939
 940 static inline gboolean
 941 gst_vaapisink_put_surface(
 942     GstVaapiSink    *sink,
 943     GstVaapiSurface *surface,
 944     guint            flags
 945 )
 946 {
 947     if (!gst_vaapi_window_put_surface(sink->window, surface,
 948                 NULL, &sink->display_rect, flags)) {
 949         GST_DEBUG("could not render VA surface");
 950         return FALSE;
 951     }
 952     return TRUE;
 953 }
 954
 955 static GstFlowReturn
 956 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *src_buffer)
 957 {
 958     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 959     GstVaapiVideoMeta *meta;
 960     GstVaapiSurface *surface;
 961     GstBuffer *buffer;
 962     guint flags;
 963     gboolean success;
 964
 965     meta = gst_buffer_get_vaapi_video_meta(src_buffer);
 966 #if GST_CHECK_VERSION(1,0,0)
 967     if (!meta)
 968         return GST_FLOW_EOS;
 969     buffer = gst_buffer_ref(src_buffer);
 970 #else
 971     if (meta)
 972         buffer = gst_buffer_ref(src_buffer);
 973     else if (sink->use_video_raw) {
 974         buffer = gst_vaapi_uploader_get_buffer(sink->uploader);
 975         if (!buffer)
 976             return GST_FLOW_EOS;
 977         meta = gst_buffer_get_vaapi_video_meta(buffer);
 978         if (!meta)
 979             goto error;
 980     }
 981     else
 982         return GST_FLOW_EOS;
 983
 984     if (sink->use_video_raw &&
 985         !gst_vaapi_uploader_process(sink->uploader, src_buffer, buffer)) {
 986         GST_WARNING("failed to process raw YUV buffer");
 987         goto error;
 988     }
 989 #endif
 990
 991     if (sink->display != gst_vaapi_video_meta_get_display(meta))
 992         gst_vaapi_display_replace(&sink->display,
 993             gst_vaapi_video_meta_get_display(meta));
 994
 995     if (!sink->window)
 996         goto error;
 997
 998     gst_vaapisink_ensure_rotation(sink, TRUE);
 999
1000     surface = gst_vaapi_video_meta_get_surface(meta);
1001     if (!surface)
1002         goto error;
1003
1004     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
1005               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
1006
1007     flags = gst_vaapi_video_meta_get_render_flags(meta);
1008
1009     if (!gst_vaapi_apply_composition(surface, src_buffer))
1010         GST_WARNING("could not update subtitles");
1011
1012     switch (sink->display_type) {
1013 #if USE_DRM
1014     case GST_VAAPI_DISPLAY_TYPE_DRM:
1015         success = TRUE;
1016         break;
1017 #endif
1018 #if USE_GLX
1019     case GST_VAAPI_DISPLAY_TYPE_GLX:
1020         if (!sink->use_glx)
1021             goto put_surface_x11;
1022         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
1023         break;
1024 #endif
1025 #if USE_X11
1026     case GST_VAAPI_DISPLAY_TYPE_X11:
1027     put_surface_x11:
1028         success = gst_vaapisink_put_surface(sink, surface, flags);
1029         break;
1030 #endif
1031 #if USE_WAYLAND
1032     case GST_VAAPI_DISPLAY_TYPE_WAYLAND:
1033         success = gst_vaapisink_put_surface(sink, surface, flags);
1034         break;
1035 #endif
1036     default:
1037         GST_ERROR("unsupported display type %d", sink->display_type);
1038         success = FALSE;
1039         break;
1040     }
1041     if (!success)
1042         goto error;
1043
1044     /* Retain VA surface until the next one is displayed */
1045     if (sink->use_overlay)
1046         gst_buffer_replace(&sink->video_buffer, buffer);
1047     gst_buffer_unref(buffer);
1048     return GST_FLOW_OK;
1049
1050 error:
1051     gst_buffer_unref(buffer);
1052     return GST_FLOW_EOS;
1053 }
1054
1055 #if GST_CHECK_VERSION(1,0,0)
1056 static gboolean
1057 gst_vaapisink_propose_allocation(GstBaseSink *base_sink, GstQuery *query)
1058 {
1059     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
1060     GstCaps *caps = NULL;
1061     gboolean need_pool;
1062
1063     gst_query_parse_allocation(query, &caps, &need_pool);
1064
1065     if (need_pool) {
1066         if (!caps)
1067             goto error_no_caps;
1068         if (!gst_vaapisink_ensure_video_buffer_pool(sink, caps))
1069             return FALSE;
1070         gst_query_add_allocation_pool(query, sink->video_buffer_pool,
1071             sink->video_buffer_size, 0, 0);
1072     }
1073
1074     gst_query_add_allocation_meta(query,
1075         GST_VAAPI_VIDEO_META_API_TYPE, NULL);
1076     gst_query_add_allocation_meta(query,
1077         GST_VIDEO_META_API_TYPE, NULL);
1078     gst_query_add_allocation_meta(query,
1079         GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, NULL);
1080     return TRUE;
1081
1082     /* ERRORS */
1083 error_no_caps:
1084     {
1085         GST_ERROR("no caps specified");
1086         return FALSE;
1087     }
1088 }
1089 #else
1090 static GstFlowReturn
1091 gst_vaapisink_buffer_alloc(
1092     GstBaseSink        *base_sink,
1093     guint64             offset,
1094     guint               size,
1095     GstCaps            *caps,
1096     GstBuffer         **pbuf
1097 )
1098 {
1099     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
1100     GstVideoInfo vi;
1101     GstBuffer *buf;
1102
1103     *pbuf = NULL;
1104
1105     if (!sink->use_video_raw) {
1106         /* Note: this code path is rarely used but for raw YUV formats
1107            from custom pipeline. Otherwise, GstBaseSink::set_caps() is
1108            called first, and GstBaseSink::buffer_alloc() is not called
1109            in VA surface format mode */
1110         if (!gst_video_info_from_caps(&vi, caps))
1111             return GST_FLOW_NOT_SUPPORTED;
1112         if (!GST_VIDEO_INFO_IS_YUV(&vi))
1113             return GST_FLOW_OK;
1114     }
1115
1116     if (!gst_vaapi_uploader_ensure_display(sink->uploader, sink->display))
1117         return GST_FLOW_NOT_SUPPORTED;
1118     if (!gst_vaapi_uploader_ensure_caps(sink->uploader, caps, NULL))
1119         return GST_FLOW_NOT_SUPPORTED;
1120
1121     buf = gst_vaapi_uploader_get_buffer(sink->uploader);
1122     if (!buf) {
1123         GST_WARNING("failed to allocate resources for raw YUV buffer");
1124         return GST_FLOW_NOT_SUPPORTED;
1125     }
1126
1127     *pbuf = buf;
1128     return GST_FLOW_OK;
1129 }
1130 #endif
1131
1132 static gboolean
1133 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
1134 {
1135     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
1136
1137     if (gst_vaapi_reply_to_query(query, sink->display)) {
1138         GST_DEBUG("sharing display %p", sink->display);
1139         return TRUE;
1140     }
1141     return GST_BASE_SINK_CLASS(gst_vaapisink_parent_class)->query(base_sink,
1142         query);
1143 }
1144
1145 static void
1146 gst_vaapisink_finalize(GObject *object)
1147 {
1148     gst_vaapisink_destroy(GST_VAAPISINK(object));
1149
1150     G_OBJECT_CLASS(gst_vaapisink_parent_class)->finalize(object);
1151 }
1152
1153 static void
1154 gst_vaapisink_set_property(
1155     GObject      *object,
1156     guint         prop_id,
1157     const GValue *value,
1158     GParamSpec   *pspec
1159 )
1160 {
1161     GstVaapiSink * const sink = GST_VAAPISINK(object);
1162
1163     switch (prop_id) {
1164     case PROP_DISPLAY_TYPE:
1165         sink->display_type = g_value_get_enum(value);
1166         break;
1167     case PROP_FULLSCREEN:
1168         sink->fullscreen = g_value_get_boolean(value);
1169         break;
1170     case PROP_SYNCHRONOUS:
1171         sink->synchronous = g_value_get_boolean(value);
1172         break;
1173     case PROP_USE_GLX:
1174         sink->use_glx = g_value_get_boolean(value);
1175         break;
1176     case PROP_USE_REFLECTION:
1177         sink->use_reflection = g_value_get_boolean(value);
1178         break;
1179     case PROP_ROTATION:
1180         sink->rotation_req = g_value_get_enum(value);
1181         break;
1182     default:
1183         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
1184         break;
1185     }
1186 }
1187
1188 static void
1189 gst_vaapisink_get_property(
1190     GObject    *object,
1191     guint       prop_id,
1192     GValue     *value,
1193     GParamSpec *pspec
1194 )
1195 {
1196     GstVaapiSink * const sink = GST_VAAPISINK(object);
1197
1198     switch (prop_id) {
1199     case PROP_DISPLAY_TYPE:
1200         g_value_set_enum(value, sink->display_type);
1201         break;
1202     case PROP_FULLSCREEN:
1203         g_value_set_boolean(value, sink->fullscreen);
1204         break;
1205     case PROP_SYNCHRONOUS:
1206         g_value_set_boolean(value, sink->synchronous);
1207         break;
1208     case PROP_USE_GLX:
1209         g_value_set_boolean(value, sink->use_glx);
1210         break;
1211     case PROP_USE_REFLECTION:
1212         g_value_set_boolean(value, sink->use_reflection);
1213         break;
1214     case PROP_ROTATION:
1215         g_value_set_enum(value, sink->rotation);
1216         break;
1217     default:
1218         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
1219         break;
1220     }
1221 }
1222
1223 static void
1224 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
1225 {
1226     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
1227     GstElementClass * const  element_class  = GST_ELEMENT_CLASS(klass);
1228     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
1229     GstPadTemplate *pad_template;
1230
1231     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
1232                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
1233
1234     object_class->finalize       = gst_vaapisink_finalize;
1235     object_class->set_property   = gst_vaapisink_set_property;
1236     object_class->get_property   = gst_vaapisink_get_property;
1237
1238     basesink_class->start        = gst_vaapisink_start;
1239     basesink_class->stop         = gst_vaapisink_stop;
1240     basesink_class->get_caps     = gst_vaapisink_get_caps;
1241     basesink_class->set_caps     = gst_vaapisink_set_caps;
1242     basesink_class->preroll      = gst_vaapisink_show_frame;
1243     basesink_class->render       = gst_vaapisink_show_frame;
1244     basesink_class->query        = gst_vaapisink_query;
1245 #if GST_CHECK_VERSION(1,0,0)
1246     basesink_class->propose_allocation = gst_vaapisink_propose_allocation;
1247 #else
1248     basesink_class->buffer_alloc = gst_vaapisink_buffer_alloc;
1249 #endif
1250
1251     gst_element_class_set_static_metadata(element_class,
1252         "VA-API sink",
1253         "Sink/Video",
1254         GST_PLUGIN_DESC,
1255         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
1256
1257     pad_template = gst_static_pad_template_get(&gst_vaapisink_sink_factory);
1258     gst_element_class_add_pad_template(element_class, pad_template);
1259
1260     g_object_class_install_property
1261         (object_class,
1262          PROP_DISPLAY_TYPE,
1263          g_param_spec_enum("display",
1264                            "display type",
1265                            "display type to use",
1266                            GST_VAAPI_TYPE_DISPLAY_TYPE,
1267                            GST_VAAPI_DISPLAY_TYPE_ANY,
1268                            G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
1269
1270 #if USE_GLX
1271     g_object_class_install_property
1272         (object_class,
1273          PROP_USE_GLX,
1274          g_param_spec_boolean("use-glx",
1275                               "OpenGL rendering",
1276                               "Enables OpenGL rendering",
1277                               FALSE,
1278                               G_PARAM_READWRITE));
1279
1280     g_object_class_install_property
1281         (object_class,
1282          PROP_USE_REFLECTION,
1283          g_param_spec_boolean("use-reflection",
1284                               "Reflection effect",
1285                               "Enables OpenGL reflection effect",
1286                               FALSE,
1287                               G_PARAM_READWRITE));
1288 #endif
1289
1290     g_object_class_install_property
1291         (object_class,
1292          PROP_FULLSCREEN,
1293          g_param_spec_boolean("fullscreen",
1294                               "Fullscreen",
1295                               "Requests window in fullscreen state",
1296                               FALSE,
1297                               G_PARAM_READWRITE));
1298
1299     /**
1300      * GstVaapiSink:synchronous:
1301      *
1302      * When enabled, runs the X display in synchronous mode. Note that
1303      * this is used only for debugging.
1304      */
1305     g_object_class_install_property
1306         (object_class,
1307          PROP_SYNCHRONOUS,
1308          g_param_spec_boolean("synchronous",
1309                               "Synchronous mode",
1310                               "Toggles X display synchronous mode",
1311                               FALSE,
1312                               G_PARAM_READWRITE));
1313
1314     /**
1315      * GstVaapiSink:rotation:
1316      *
1317      * The VA display rotation mode, expressed as a #GstVaapiRotation.
1318      */
1319     g_object_class_install_property
1320         (object_class,
1321          PROP_ROTATION,
1322          g_param_spec_enum(GST_VAAPI_DISPLAY_PROP_ROTATION,
1323                            "rotation",
1324                            "The display rotation mode",
1325                            GST_VAAPI_TYPE_ROTATION,
1326                            DEFAULT_ROTATION,
1327                            G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
1328 }
1329
1330 static void
1331 gst_vaapisink_init(GstVaapiSink *sink)
1332 {
1333     sink->caps           = NULL;
1334     sink->display        = NULL;
1335     sink->window         = NULL;
1336     sink->window_width   = 0;
1337     sink->window_height  = 0;
1338     sink->texture        = NULL;
1339     sink->video_buffer   = NULL;
1340     sink->video_width    = 0;
1341     sink->video_height   = 0;
1342     sink->video_par_n    = 1;
1343     sink->video_par_d    = 1;
1344     sink->foreign_window = FALSE;
1345     sink->fullscreen     = FALSE;
1346     sink->synchronous    = FALSE;
1347     sink->display_type   = DEFAULT_DISPLAY_TYPE;
1348     sink->rotation       = DEFAULT_ROTATION;
1349     sink->rotation_req   = DEFAULT_ROTATION;
1350     sink->use_reflection = FALSE;
1351     sink->use_overlay    = FALSE;
1352     sink->use_rotation   = FALSE;
1353 }