gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  Copyright (C) 2010-2011 Splitted-Desktop Systems
   5  *  Copyright (C) 2011-2012 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 "config.h"
  33 #include <gst/gst.h>
  34 #include <gst/video/video.h>
  35 #include <gst/video/videocontext.h>
  36 #include <gst/vaapi/gstvaapivideobuffer.h>
  37 #include <gst/vaapi/gstvaapivideosink.h>
  38 #include <gst/vaapi/gstvaapidisplay_x11.h>
  39 #include <gst/vaapi/gstvaapiwindow_x11.h>
  40 #if USE_GLX
  41 # include <gst/vaapi/gstvaapidisplay_glx.h>
  42 # include <gst/vaapi/gstvaapiwindow_glx.h>
  43 #endif
  44
  45 /* Supported interfaces */
  46 #include <gst/interfaces/xoverlay.h>
  47
  48 #include "gstvaapisink.h"
  49 #include "gstvaapipluginutil.h"
  50
  51 #define GST_PLUGIN_NAME "vaapisink"
  52 #define GST_PLUGIN_DESC "A VA-API based videosink"
  53
  54 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  55 #define GST_CAT_DEFAULT gst_debug_vaapisink
  56
  57 /* ElementFactory information */
  58 static const GstElementDetails gst_vaapisink_details =
  59     GST_ELEMENT_DETAILS(
  60         "VA-API sink",
  61         "Sink/Video",
  62         GST_PLUGIN_DESC,
  63         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  64
  65 /* Default template */
  66 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  67     GST_STATIC_PAD_TEMPLATE(
  68         "sink",
  69         GST_PAD_SINK,
  70         GST_PAD_ALWAYS,
  71         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  72
  73 static void
  74 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface);
  75
  76 static void
  77 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface);
  78
  79 static void
  80 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface);
  81
  82 G_DEFINE_TYPE_WITH_CODE(
  83     GstVaapiSink,
  84     gst_vaapisink,
  85     GST_TYPE_VIDEO_SINK,
  86     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
  87                           gst_vaapisink_implements_iface_init);
  88     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_CONTEXT,
  89                           gst_vaapisink_video_context_iface_init);
  90     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
  91                           gst_vaapisink_xoverlay_iface_init));
  92
  93 enum {
  94     PROP_0,
  95
  96     PROP_DISPLAY_TYPE,
  97     PROP_FULLSCREEN,
  98     PROP_SYNCHRONOUS,
  99     PROP_USE_REFLECTION
 100 };
 101
 102 #define DEFAULT_DISPLAY_TYPE            GST_VAAPI_DISPLAY_TYPE_ANY
 103
 104 /* GstImplementsInterface interface */
 105
 106 static gboolean
 107 gst_vaapisink_implements_interface_supported(
 108     GstImplementsInterface *iface,
 109     GType                   type
 110 )
 111 {
 112     return (type == GST_TYPE_VIDEO_CONTEXT ||
 113             type == GST_TYPE_X_OVERLAY);
 114 }
 115
 116 static void
 117 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 118 {
 119     iface->supported = gst_vaapisink_implements_interface_supported;
 120 }
 121
 122 /* GstVaapiVideoSink interface */
 123
 124 static void
 125 gst_vaapisink_set_video_context(GstVideoContext *context, const gchar *type,
 126     const GValue *value)
 127 {
 128   GstVaapiSink *sink = GST_VAAPISINK (context);
 129   gst_vaapi_set_display (type, value, &sink->display);
 130 }
 131
 132 static void
 133 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface)
 134 {
 135     iface->set_context = gst_vaapisink_set_video_context;
 136 }
 137
 138 /* GstXOverlay interface */
 139
 140 static gboolean
 141 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 142
 143 static GstFlowReturn
 144 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 145
 146 static void
 147 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window)
 148 {
 149     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 150
 151     /* Disable GLX rendering when vaapisink is using a foreign X
 152        window. It's pretty much useless */
 153     if (sink->display_type == GST_VAAPI_DISPLAY_TYPE_GLX)
 154         sink->display_type = GST_VAAPI_DISPLAY_TYPE_X11;
 155
 156     sink->foreign_window = TRUE;
 157     gst_vaapisink_ensure_window_xid(sink, window);
 158 }
 159
 160 static void
 161 gst_vaapisink_xoverlay_set_render_rectangle(
 162     GstXOverlay *overlay,
 163     gint         x,
 164     gint         y,
 165     gint         width,
 166     gint         height
 167 )
 168 {
 169     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 170     GstVaapiRectangle * const display_rect = &sink->display_rect;
 171
 172     display_rect->x      = x;
 173     display_rect->y      = y;
 174     display_rect->width  = width;
 175     display_rect->height = height;
 176
 177     GST_DEBUG("render rect (%d,%d):%ux%u",
 178               display_rect->x, display_rect->y,
 179               display_rect->width, display_rect->height);
 180 }
 181
 182 static void
 183 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 184 {
 185     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 186     GstBuffer *buffer;
 187
 188     buffer = gst_base_sink_get_last_buffer(base_sink);
 189     if (buffer) {
 190         gst_vaapisink_show_frame(base_sink, buffer);
 191         gst_buffer_unref(buffer);
 192     }
 193 }
 194
 195 static void
 196 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 197 {
 198     iface->set_window_handle    = gst_vaapisink_xoverlay_set_window_handle;
 199     iface->set_render_rectangle = gst_vaapisink_xoverlay_set_render_rectangle;
 200     iface->expose               = gst_vaapisink_xoverlay_expose;
 201 }
 202
 203 static void
 204 gst_vaapisink_destroy(GstVaapiSink *sink)
 205 {
 206     g_clear_object(&sink->texture);
 207     g_clear_object(&sink->display);
 208
 209     gst_caps_replace(&sink->caps, NULL);
 210 }
 211
 212 /* Checks whether a ConfigureNotify event is in the queue */
 213 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 214 struct _ConfigureNotifyEventPendingArgs {
 215     Window      window;
 216     guint       width;
 217     guint       height;
 218     gboolean    match;
 219 };
 220
 221 static Bool
 222 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 223 {
 224     ConfigureNotifyEventPendingArgs * const args =
 225         (ConfigureNotifyEventPendingArgs *)arg;
 226
 227     if (xev->type == ConfigureNotify &&
 228         xev->xconfigure.window == args->window &&
 229         xev->xconfigure.width  == args->width  &&
 230         xev->xconfigure.height == args->height)
 231         args->match = TRUE;
 232
 233     /* XXX: this is a hack to traverse the whole queue because we
 234        can't use XPeekIfEvent() since it could block */
 235     return False;
 236 }
 237
 238 static gboolean
 239 configure_notify_event_pending(
 240     GstVaapiSink *sink,
 241     Window        window,
 242     guint         width,
 243     guint         height
 244 )
 245 {
 246     ConfigureNotifyEventPendingArgs args;
 247     XEvent xev;
 248
 249     args.window = window;
 250     args.width  = width;
 251     args.height = height;
 252     args.match  = FALSE;
 253
 254     /* XXX: don't use XPeekIfEvent() because it might block */
 255     XCheckIfEvent(
 256         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 257         &xev,
 258         configure_notify_event_pending_cb, (XPointer)&args
 259     );
 260     return args.match;
 261 }
 262
 263 static const gchar *
 264 get_display_type_name(GstVaapiDisplayType display_type)
 265 {
 266     gpointer const klass = g_type_class_peek(GST_VAAPI_TYPE_DISPLAY_TYPE);
 267     GEnumValue * const e = g_enum_get_value(klass, display_type);
 268
 269     if (e)
 270         return e->value_name;
 271     return "<unknown-type>";
 272 }
 273
 274 static inline gboolean
 275 gst_vaapisink_ensure_display(GstVaapiSink *sink)
 276 {
 277     GstVaapiDisplayType display_type;
 278
 279     if (!gst_vaapi_ensure_display(sink, sink->display_type, &sink->display))
 280         return FALSE;
 281
 282     display_type = gst_vaapi_display_get_display_type(sink->display);
 283     if (display_type != sink->display_type) {
 284         GST_INFO("created %s %p", get_display_type_name(display_type),
 285             sink->display);
 286         sink->display_type = display_type;
 287     }
 288     return TRUE;
 289 }
 290
 291 static gboolean
 292 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 293 {
 294     GstVaapiRectangle * const display_rect = &sink->display_rect;
 295     guint num, den, display_par_n, display_par_d;
 296     gboolean success;
 297
 298     /* Return success if caps are not set yet */
 299     if (!sink->caps)
 300         return TRUE;
 301
 302     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 303
 304     gst_vaapi_display_get_pixel_aspect_ratio(
 305         sink->display,
 306         &display_par_n, &display_par_d
 307     );
 308     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 309               display_par_n, display_par_d);
 310
 311     success = gst_video_calculate_display_ratio(
 312         &num, &den,
 313         sink->video_width, sink->video_height,
 314         sink->video_par_n, sink->video_par_d,
 315         display_par_n, display_par_d
 316     );
 317     if (!success)
 318         return FALSE;
 319     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 320               sink->video_width, sink->video_height, num, den);
 321
 322     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 323     if (display_rect->width <= width) {
 324         GST_DEBUG("keeping window height");
 325         display_rect->height = height;
 326     }
 327     else {
 328         GST_DEBUG("keeping window width");
 329         display_rect->width  = width;
 330         display_rect->height =
 331             gst_util_uint64_scale_int(width, den, num);
 332     }
 333     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 334
 335     g_assert(display_rect->width  <= width);
 336     g_assert(display_rect->height <= height);
 337
 338     display_rect->x = (width  - display_rect->width)  / 2;
 339     display_rect->y = (height - display_rect->height) / 2;
 340
 341     GST_DEBUG("render rect (%d,%d):%ux%u",
 342               display_rect->x, display_rect->y,
 343               display_rect->width, display_rect->height);
 344     return TRUE;
 345 }
 346
 347 static inline gboolean
 348 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 349 {
 350     GstVaapiDisplay * const display = sink->display;
 351
 352     if (!sink->window) {
 353         switch (sink->display_type) {
 354 #if USE_GLX
 355         case GST_VAAPI_DISPLAY_TYPE_GLX:
 356             sink->window = gst_vaapi_window_glx_new(display, width, height);
 357             break;
 358 #endif
 359         case GST_VAAPI_DISPLAY_TYPE_X11:
 360             sink->window = gst_vaapi_window_x11_new(display, width, height);
 361             break;
 362         default:
 363             GST_ERROR("unsupported display type %d", sink->display_type);
 364             return FALSE;
 365         }
 366         if (sink->window)
 367             gst_x_overlay_got_window_handle(
 368                 GST_X_OVERLAY(sink),
 369                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 370             );
 371     }
 372     return sink->window != NULL;
 373 }
 374
 375 static gboolean
 376 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 377 {
 378     Window rootwin;
 379     unsigned int width, height, border_width, depth;
 380     int x, y;
 381     XID xid = window_id;
 382
 383     if (!gst_vaapisink_ensure_display(sink))
 384         return FALSE;
 385
 386     gst_vaapi_display_lock(sink->display);
 387     XGetGeometry(
 388         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 389         xid,
 390         &rootwin,
 391         &x, &y, &width, &height, &border_width, &depth
 392     );
 393     gst_vaapi_display_unlock(sink->display);
 394
 395     if ((width != sink->window_width || height != sink->window_height) &&
 396         !configure_notify_event_pending(sink, xid, width, height)) {
 397         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 398             return FALSE;
 399         sink->window_width  = width;
 400         sink->window_height = height;
 401     }
 402
 403     if (sink->window &&
 404         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 405         return TRUE;
 406
 407     g_clear_object(&sink->window);
 408
 409     switch (sink->display_type) {
 410 #if USE_GLX
 411     case GST_VAAPI_DISPLAY_TYPE_GLX:
 412         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 413         break;
 414 #endif
 415     case GST_VAAPI_DISPLAY_TYPE_X11:
 416         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 417         break;
 418     default:
 419         GST_ERROR("unsupported display type %d", sink->display_type);
 420         return FALSE;
 421     }
 422     return sink->window != NULL;
 423 }
 424
 425 static gboolean
 426 gst_vaapisink_start(GstBaseSink *base_sink)
 427 {
 428     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 429
 430     return gst_vaapisink_ensure_display(sink);
 431 }
 432
 433 static gboolean
 434 gst_vaapisink_stop(GstBaseSink *base_sink)
 435 {
 436     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 437
 438     g_clear_object(&sink->window);
 439     g_clear_object(&sink->display);
 440
 441     return TRUE;
 442 }
 443
 444 static gboolean
 445 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 446 {
 447     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 448     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 449     guint win_width, win_height, display_width, display_height;
 450     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 451
 452     if (!structure)
 453         return FALSE;
 454     if (!gst_structure_get_int(structure, "width",  &video_width))
 455         return FALSE;
 456     if (!gst_structure_get_int(structure, "height", &video_height))
 457         return FALSE;
 458     sink->video_width  = video_width;
 459     sink->video_height = video_height;
 460
 461     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 462     sink->video_par_n  = video_par_n;
 463     sink->video_par_d  = video_par_d;
 464     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 465
 466     gst_caps_replace(&sink->caps, caps);
 467
 468     if (!gst_vaapisink_ensure_display(sink))
 469         return FALSE;
 470
 471     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 472     if (sink->foreign_window) {
 473         win_width  = sink->window_width;
 474         win_height = sink->window_height;
 475     }
 476     else if (sink->fullscreen ||
 477              video_width > display_width || video_height > display_height) {
 478         win_width  = display_width;
 479         win_height = display_height;
 480     }
 481     else {
 482         win_width  = video_width;
 483         win_height = video_height;
 484     }
 485
 486     if (sink->window) {
 487         if (!sink->foreign_window || sink->fullscreen)
 488             gst_vaapi_window_set_size(sink->window, win_width, win_height);
 489     }
 490     else {
 491         gst_vaapi_display_lock(sink->display);
 492         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 493         gst_vaapi_display_unlock(sink->display);
 494         if (sink->window)
 495             return TRUE;
 496         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 497             return FALSE;
 498         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 499         gst_vaapi_window_show(sink->window);
 500         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 501     }
 502     sink->window_width  = win_width;
 503     sink->window_height = win_height;
 504     GST_DEBUG("window size %ux%u", win_width, win_height);
 505
 506     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 507 }
 508
 509 #if USE_GLX
 510 static void
 511 render_background(GstVaapiSink *sink)
 512 {
 513     /* Original code from Mirco Muller (MacSlow):
 514        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 515     GLfloat fStartX = 0.0f;
 516     GLfloat fStartY = 0.0f;
 517     GLfloat fWidth  = (GLfloat)sink->window_width;
 518     GLfloat fHeight = (GLfloat)sink->window_height;
 519
 520     glClear(GL_COLOR_BUFFER_BIT);
 521     glBegin(GL_QUADS);
 522     {
 523         /* top third, darker grey to white */
 524         glColor3f(0.85f, 0.85f, 0.85f);
 525         glVertex3f(fStartX, fStartY, 0.0f);
 526         glColor3f(0.85f, 0.85f, 0.85f);
 527         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 528         glColor3f(1.0f, 1.0f, 1.0f);
 529         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 530         glColor3f(1.0f, 1.0f, 1.0f);
 531         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 532
 533         /* middle third, just plain white */
 534         glColor3f(1.0f, 1.0f, 1.0f);
 535         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 536         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 537         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 538         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 539
 540         /* bottom third, white to lighter grey */
 541         glColor3f(1.0f, 1.0f, 1.0f);
 542         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 543         glColor3f(1.0f, 1.0f, 1.0f);
 544         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 545         glColor3f(0.62f, 0.66f, 0.69f);
 546         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 547         glColor3f(0.62f, 0.66f, 0.69f);
 548         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 549     }
 550     glEnd();
 551 }
 552
 553 static void
 554 render_frame(GstVaapiSink *sink)
 555 {
 556     const guint x1 = sink->display_rect.x;
 557     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 558     const guint y1 = sink->display_rect.y;
 559     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 560
 561     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 562     glBegin(GL_QUADS);
 563     {
 564         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 565         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 566         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 567         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 568     }
 569     glEnd();
 570 }
 571
 572 static void
 573 render_reflection(GstVaapiSink *sink)
 574 {
 575     const guint x1 = sink->display_rect.x;
 576     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 577     const guint y1 = sink->display_rect.y;
 578     const guint rh = sink->display_rect.height / 5;
 579     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 580
 581     glBegin(GL_QUADS);
 582     {
 583         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 584         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 585         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 586
 587         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 588         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 589         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 590     }
 591     glEnd();
 592 }
 593
 594 static gboolean
 595 gst_vaapisink_show_frame_glx(
 596     GstVaapiSink    *sink,
 597     GstVaapiSurface *surface,
 598     guint            flags
 599 )
 600 {
 601     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 602     GLenum target;
 603     GLuint texture;
 604
 605     gst_vaapi_window_glx_make_current(window);
 606     if (!sink->texture) {
 607         sink->texture = gst_vaapi_texture_new(
 608             sink->display,
 609             GL_TEXTURE_2D,
 610             GL_BGRA,
 611             sink->video_width,
 612             sink->video_height
 613         );
 614         if (!sink->texture)
 615             goto error_create_texture;
 616     }
 617     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 618         goto error_transfer_surface;
 619
 620     target  = gst_vaapi_texture_get_target(sink->texture);
 621     texture = gst_vaapi_texture_get_id(sink->texture);
 622     if (target != GL_TEXTURE_2D || !texture)
 623         return FALSE;
 624
 625     if (sink->use_reflection)
 626         render_background(sink);
 627
 628     glEnable(target);
 629     glBindTexture(target, texture);
 630     {
 631         if (sink->use_reflection) {
 632             glPushMatrix();
 633             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 634             glTranslatef(50.0f, 0.0f, 0.0f);
 635         }
 636         render_frame(sink);
 637         if (sink->use_reflection) {
 638             glPushMatrix();
 639             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 640             render_reflection(sink);
 641             glPopMatrix();
 642             glPopMatrix();
 643         }
 644     }
 645     glBindTexture(target, 0);
 646     glDisable(target);
 647     gst_vaapi_window_glx_swap_buffers(window);
 648     return TRUE;
 649
 650     /* ERRORS */
 651 error_create_texture:
 652     {
 653         GST_DEBUG("could not create VA/GLX texture");
 654         return FALSE;
 655     }
 656 error_transfer_surface:
 657     {
 658         GST_DEBUG("could not transfer VA surface to texture");
 659         return FALSE;
 660     }
 661 }
 662 #endif
 663
 664 static inline gboolean
 665 gst_vaapisink_show_frame_x11(
 666     GstVaapiSink    *sink,
 667     GstVaapiSurface *surface,
 668     guint            flags
 669 )
 670 {
 671     if (!gst_vaapi_window_put_surface(sink->window, surface,
 672                 NULL, &sink->display_rect, flags)) {
 673         GST_DEBUG("could not render VA surface");
 674         return FALSE;
 675     }
 676     return TRUE;
 677 }
 678
 679 static GstFlowReturn
 680 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 681 {
 682     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 683     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 684     GstVaapiSurface *surface;
 685     guint flags;
 686     gboolean success;
 687     GstVideoOverlayComposition * const composition =
 688         gst_video_buffer_get_overlay_composition(buffer);
 689
 690     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 691       g_clear_object(&sink->display);
 692       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 693     }
 694
 695     if (!sink->window)
 696         return GST_FLOW_UNEXPECTED;
 697
 698     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 699     if (!surface)
 700         return GST_FLOW_UNEXPECTED;
 701
 702     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 703               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 704
 705     flags = gst_vaapi_video_buffer_get_render_flags(vbuffer);
 706
 707     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 708              composition, TRUE))
 709         GST_WARNING("could not update subtitles");
 710
 711     switch (sink->display_type) {
 712 #if USE_GLX
 713     case GST_VAAPI_DISPLAY_TYPE_GLX:
 714         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 715         break;
 716 #endif
 717     case GST_VAAPI_DISPLAY_TYPE_X11:
 718         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 719         break;
 720     default:
 721         GST_ERROR("unsupported display type %d", sink->display_type);
 722         success = FALSE;
 723         break;
 724     }
 725     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 726 }
 727
 728 static gboolean
 729 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 730 {
 731     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 732     GST_DEBUG ("sharing display %p", sink->display);
 733     return gst_vaapi_reply_to_query (query, sink->display);
 734 }
 735
 736 static void
 737 gst_vaapisink_finalize(GObject *object)
 738 {
 739     gst_vaapisink_destroy(GST_VAAPISINK(object));
 740
 741     G_OBJECT_CLASS(gst_vaapisink_parent_class)->finalize(object);
 742 }
 743
 744 static void
 745 gst_vaapisink_set_property(
 746     GObject      *object,
 747     guint         prop_id,
 748     const GValue *value,
 749     GParamSpec   *pspec
 750 )
 751 {
 752     GstVaapiSink * const sink = GST_VAAPISINK(object);
 753
 754     switch (prop_id) {
 755     case PROP_DISPLAY_TYPE:
 756         sink->display_type = g_value_get_enum(value);
 757         break;
 758     case PROP_FULLSCREEN:
 759         sink->fullscreen = g_value_get_boolean(value);
 760         break;
 761     case PROP_SYNCHRONOUS:
 762         sink->synchronous = g_value_get_boolean(value);
 763         break;
 764     case PROP_USE_REFLECTION:
 765         sink->use_reflection = g_value_get_boolean(value);
 766         break;
 767     default:
 768         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 769         break;
 770     }
 771 }
 772
 773 static void
 774 gst_vaapisink_get_property(
 775     GObject    *object,
 776     guint       prop_id,
 777     GValue     *value,
 778     GParamSpec *pspec
 779 )
 780 {
 781     GstVaapiSink * const sink = GST_VAAPISINK(object);
 782
 783     switch (prop_id) {
 784     case PROP_DISPLAY_TYPE:
 785         g_value_set_enum(value, sink->display_type);
 786         break;
 787     case PROP_FULLSCREEN:
 788         g_value_set_boolean(value, sink->fullscreen);
 789         break;
 790     case PROP_SYNCHRONOUS:
 791         g_value_set_boolean(value, sink->synchronous);
 792         break;
 793     case PROP_USE_REFLECTION:
 794         g_value_set_boolean(value, sink->use_reflection);
 795         break;
 796     default:
 797         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 798         break;
 799     }
 800 }
 801
 802 static void
 803 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 804 {
 805     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 806     GstElementClass * const  element_class  = GST_ELEMENT_CLASS(klass);
 807     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 808     GstPadTemplate *pad_template;
 809
 810     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 811                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 812
 813     object_class->finalize       = gst_vaapisink_finalize;
 814     object_class->set_property   = gst_vaapisink_set_property;
 815     object_class->get_property   = gst_vaapisink_get_property;
 816
 817     basesink_class->start        = gst_vaapisink_start;
 818     basesink_class->stop         = gst_vaapisink_stop;
 819     basesink_class->set_caps     = gst_vaapisink_set_caps;
 820     basesink_class->preroll      = gst_vaapisink_show_frame;
 821     basesink_class->render       = gst_vaapisink_show_frame;
 822     basesink_class->query        = gst_vaapisink_query;
 823
 824     gst_element_class_set_details_simple(
 825         element_class,
 826         gst_vaapisink_details.longname,
 827         gst_vaapisink_details.klass,
 828         gst_vaapisink_details.description,
 829         gst_vaapisink_details.author
 830     );
 831
 832     pad_template = gst_static_pad_template_get(&gst_vaapisink_sink_factory);
 833     gst_element_class_add_pad_template(element_class, pad_template);
 834     gst_object_unref(pad_template);
 835
 836     g_object_class_install_property
 837         (object_class,
 838          PROP_DISPLAY_TYPE,
 839          g_param_spec_enum("display",
 840                            "display type",
 841                            "display type to use",
 842                            GST_VAAPI_TYPE_DISPLAY_TYPE,
 843                            GST_VAAPI_DISPLAY_TYPE_ANY,
 844                            G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 845
 846 #if USE_GLX
 847     g_object_class_install_property
 848         (object_class,
 849          PROP_USE_REFLECTION,
 850          g_param_spec_boolean("use-reflection",
 851                               "Reflection effect",
 852                               "Enables OpenGL reflection effect",
 853                               FALSE,
 854                               G_PARAM_READWRITE));
 855 #endif
 856
 857     g_object_class_install_property
 858         (object_class,
 859          PROP_FULLSCREEN,
 860          g_param_spec_boolean("fullscreen",
 861                               "Fullscreen",
 862                               "Requests window in fullscreen state",
 863                               FALSE,
 864                               G_PARAM_READWRITE));
 865
 866     /**
 867      * GstVaapiSink:synchronous:
 868      *
 869      * When enabled, runs the X display in synchronous mode. Note that
 870      * this is used only for debugging.
 871      */
 872     g_object_class_install_property
 873         (object_class,
 874          PROP_SYNCHRONOUS,
 875          g_param_spec_boolean("synchronous",
 876                               "Synchronous mode",
 877                               "Toggles X display synchronous mode",
 878                               FALSE,
 879                               G_PARAM_READWRITE));
 880 }
 881
 882 static void
 883 gst_vaapisink_init(GstVaapiSink *sink)
 884 {
 885     sink->caps           = NULL;
 886     sink->display        = NULL;
 887     sink->window         = NULL;
 888     sink->window_width   = 0;
 889     sink->window_height  = 0;
 890     sink->texture        = NULL;
 891     sink->video_width    = 0;
 892     sink->video_height   = 0;
 893     sink->video_par_n    = 1;
 894     sink->video_par_d    = 1;
 895     sink->foreign_window = FALSE;
 896     sink->fullscreen     = FALSE;
 897     sink->synchronous    = FALSE;
 898     sink->display_type   = DEFAULT_DISPLAY_TYPE;
 899     sink->use_reflection = FALSE;
 900 }