gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  gstreamer-vaapi (C) 2010-2011 Splitted-Desktop Systems
   5  *  Copyright (C) 2011 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/gstutils_version.h>
  35 #include <gst/video/video.h>
  36 #include <gst/video/videocontext.h>
  37 #include <gst/vaapi/gstvaapivideobuffer.h>
  38 #include <gst/vaapi/gstvaapivideosink.h>
  39 #include <gst/vaapi/gstvaapidisplay_x11.h>
  40 #include <gst/vaapi/gstvaapiwindow_x11.h>
  41 #if USE_VAAPISINK_GLX
  42 #include <gst/vaapi/gstvaapidisplay_glx.h>
  43 #include <gst/vaapi/gstvaapiwindow_glx.h>
  44 #endif
  45
  46 /* Supported interfaces */
  47 #include <gst/interfaces/xoverlay.h>
  48
  49 #include "gstvaapisink.h"
  50 #include "gstvaapipluginutil.h"
  51
  52 #define HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE \
  53     GST_PLUGINS_BASE_CHECK_VERSION(0,10,31)
  54
  55 #define HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE \
  56     GST_PLUGINS_BASE_CHECK_VERSION(0,10,29)
  57
  58 #define GST_PLUGIN_NAME "vaapisink"
  59 #define GST_PLUGIN_DESC "A VA-API based videosink"
  60
  61 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  62 #define GST_CAT_DEFAULT gst_debug_vaapisink
  63
  64 /* ElementFactory information */
  65 static const GstElementDetails gst_vaapisink_details =
  66     GST_ELEMENT_DETAILS(
  67         "VA-API sink",
  68         "Sink/Video",
  69         GST_PLUGIN_DESC,
  70         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  71
  72 /* Default template */
  73 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  74     GST_STATIC_PAD_TEMPLATE(
  75         "sink",
  76         GST_PAD_SINK,
  77         GST_PAD_ALWAYS,
  78         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  79
  80 static void gst_vaapisink_iface_init(GType type);
  81
  82 GST_BOILERPLATE_FULL(
  83     GstVaapiSink,
  84     gst_vaapisink,
  85     GstVideoSink,
  86     GST_TYPE_VIDEO_SINK,
  87     gst_vaapisink_iface_init);
  88
  89 enum {
  90     PROP_0,
  91
  92     PROP_USE_GLX,
  93     PROP_FULLSCREEN,
  94     PROP_SYNCHRONOUS,
  95     PROP_USE_REFLECTION
  96 };
  97
  98 /* GstImplementsInterface interface */
  99
 100 static gboolean
 101 gst_vaapisink_implements_interface_supported(
 102     GstImplementsInterface *iface,
 103     GType                   type
 104 )
 105 {
 106     return (type == GST_TYPE_VIDEO_CONTEXT ||
 107             type == GST_TYPE_X_OVERLAY);
 108 }
 109
 110 static void
 111 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 112 {
 113     iface->supported = gst_vaapisink_implements_interface_supported;
 114 }
 115
 116 /* GstVaapiVideoSink interface */
 117
 118 static void
 119 gst_vaapisink_set_video_context(GstVideoContext *context, const gchar *type,
 120     const GValue *value)
 121 {
 122   GstVaapiSink *sink = GST_VAAPISINK (context);
 123   gst_vaapi_set_display (type, value, &sink->display);
 124 }
 125
 126 static void
 127 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface)
 128 {
 129     iface->set_context = gst_vaapisink_set_video_context;
 130 }
 131
 132 /* GstXOverlay interface */
 133
 134 static gboolean
 135 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 136
 137 static GstFlowReturn
 138 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 139
 140 static inline void
 141 _gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, guintptr window_id)
 142 {
 143     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 144
 145     /* Disable GLX rendering when vaapisink is using a foreign X
 146        window. It's pretty much useless */
 147     sink->use_glx = FALSE;
 148
 149     sink->foreign_window = TRUE;
 150     gst_vaapisink_ensure_window_xid(sink, window_id);
 151 }
 152
 153 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 154 static void
 155 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window_id)
 156 {
 157     _gst_vaapisink_xoverlay_set_xid(overlay, window_id);
 158 }
 159 #else
 160 static void
 161 gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, XID xid)
 162 {
 163     _gst_vaapisink_xoverlay_set_xid(overlay, xid);
 164 }
 165 #endif
 166
 167 #if HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE
 168 static void
 169 gst_vaapisink_xoverlay_set_render_rectangle(
 170     GstXOverlay *overlay,
 171     gint         x,
 172     gint         y,
 173     gint         width,
 174     gint         height
 175 )
 176 {
 177     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 178     GstVaapiRectangle * const display_rect = &sink->display_rect;
 179
 180     display_rect->x      = x;
 181     display_rect->y      = y;
 182     display_rect->width  = width;
 183     display_rect->height = height;
 184
 185     GST_DEBUG("render rect (%d,%d):%ux%u",
 186               display_rect->x, display_rect->y,
 187               display_rect->width, display_rect->height);
 188 }
 189 #endif
 190
 191 static void
 192 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 193 {
 194     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 195     GstBuffer *buffer;
 196
 197     buffer = gst_base_sink_get_last_buffer(base_sink);
 198     if (buffer) {
 199         gst_vaapisink_show_frame(base_sink, buffer);
 200         gst_buffer_unref(buffer);
 201     }
 202 }
 203
 204 static void
 205 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 206 {
 207 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 208     iface->set_window_handle    = gst_vaapisink_xoverlay_set_window_handle;
 209 #else
 210     iface->set_xwindow_id       = gst_vaapisink_xoverlay_set_xid;
 211 #endif
 212 #if HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE
 213     iface->set_render_rectangle = gst_vaapisink_xoverlay_set_render_rectangle;
 214 #endif
 215     iface->expose               = gst_vaapisink_xoverlay_expose;
 216 }
 217
 218 static void
 219 gst_vaapisink_iface_init(GType type)
 220 {
 221     const GType g_define_type_id = type;
 222
 223     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
 224                           gst_vaapisink_implements_iface_init);
 225     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_CONTEXT,
 226                           gst_vaapisink_video_context_iface_init);
 227     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
 228                           gst_vaapisink_xoverlay_iface_init);
 229 }
 230
 231 static void
 232 gst_vaapisink_destroy(GstVaapiSink *sink)
 233 {
 234     if (sink->texture) {
 235         g_object_unref(sink->texture);
 236         sink->texture = NULL;
 237     }
 238
 239     if (sink->display) {
 240         g_object_unref(sink->display);
 241         sink->display = NULL;
 242     }
 243 }
 244
 245 /* Checks whether a ConfigureNotify event is in the queue */
 246 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 247 struct _ConfigureNotifyEventPendingArgs {
 248     Window      window;
 249     guint       width;
 250     guint       height;
 251     gboolean    match;
 252 };
 253
 254 static Bool
 255 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 256 {
 257     ConfigureNotifyEventPendingArgs * const args =
 258         (ConfigureNotifyEventPendingArgs *)arg;
 259
 260     if (xev->type == ConfigureNotify &&
 261         xev->xconfigure.window == args->window &&
 262         xev->xconfigure.width  == args->width  &&
 263         xev->xconfigure.height == args->height)
 264         args->match = TRUE;
 265
 266     /* XXX: this is a hack to traverse the whole queue because we
 267        can't use XPeekIfEvent() since it could block */
 268     return False;
 269 }
 270
 271 static gboolean
 272 configure_notify_event_pending(
 273     GstVaapiSink *sink,
 274     Window        window,
 275     guint         width,
 276     guint         height
 277 )
 278 {
 279     ConfigureNotifyEventPendingArgs args;
 280     XEvent xev;
 281
 282     args.window = window;
 283     args.width  = width;
 284     args.height = height;
 285     args.match  = FALSE;
 286
 287     /* XXX: don't use XPeekIfEvent() because it might block */
 288     XCheckIfEvent(
 289         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 290         &xev,
 291         configure_notify_event_pending_cb, (XPointer)&args
 292     );
 293     return args.match;
 294 }
 295
 296 static gboolean
 297 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 298 {
 299     GstVaapiRectangle * const display_rect = &sink->display_rect;
 300     guint num, den, display_par_n, display_par_d;
 301     gboolean success;
 302
 303     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 304
 305     gst_vaapi_display_get_pixel_aspect_ratio(
 306         sink->display,
 307         &display_par_n, &display_par_d
 308     );
 309     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 310               display_par_n, display_par_d);
 311
 312     success = gst_video_calculate_display_ratio(
 313         &num, &den,
 314         sink->video_width, sink->video_height,
 315         sink->video_par_n, sink->video_par_d,
 316         display_par_n, display_par_d
 317     );
 318     if (!success)
 319         return FALSE;
 320     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 321               sink->video_width, sink->video_height, num, den);
 322
 323     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 324     if (display_rect->width <= width) {
 325         GST_DEBUG("keeping window height");
 326         display_rect->height = height;
 327     }
 328     else {
 329         GST_DEBUG("keeping window width");
 330         display_rect->width  = width;
 331         display_rect->height =
 332             gst_util_uint64_scale_int(width, den, num);
 333     }
 334     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 335
 336     g_assert(display_rect->width  <= width);
 337     g_assert(display_rect->height <= height);
 338
 339     display_rect->x = (width  - display_rect->width)  / 2;
 340     display_rect->y = (height - display_rect->height) / 2;
 341
 342     GST_DEBUG("render rect (%d,%d):%ux%u",
 343               display_rect->x, display_rect->y,
 344               display_rect->width, display_rect->height);
 345     return TRUE;
 346 }
 347
 348 static inline gboolean
 349 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 350 {
 351     GstVaapiDisplay * const display = sink->display;
 352
 353     if (!sink->window) {
 354 #if USE_VAAPISINK_GLX
 355         if (sink->use_glx)
 356             sink->window = gst_vaapi_window_glx_new(display, width, height);
 357         else
 358 #endif
 359             sink->window = gst_vaapi_window_x11_new(display, width, height);
 360         if (sink->window)
 361             gst_x_overlay_got_xwindow_id(
 362                 GST_X_OVERLAY(sink),
 363                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 364             );
 365     }
 366     return sink->window != NULL;
 367 }
 368
 369 static gboolean
 370 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 371 {
 372     Window rootwin;
 373     unsigned int width, height, border_width, depth;
 374     int x, y;
 375     XID xid = window_id;
 376
 377     if (!gst_vaapi_ensure_display(sink, &sink->display))
 378         return FALSE;
 379
 380     gst_vaapi_display_lock(sink->display);
 381     XGetGeometry(
 382         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 383         xid,
 384         &rootwin,
 385         &x, &y, &width, &height, &border_width, &depth
 386     );
 387     gst_vaapi_display_unlock(sink->display);
 388
 389     if ((width != sink->window_width || height != sink->window_height) &&
 390         !configure_notify_event_pending(sink, xid, width, height)) {
 391         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 392             return FALSE;
 393         sink->window_width  = width;
 394         sink->window_height = height;
 395     }
 396
 397     if (sink->window &&
 398         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 399         return TRUE;
 400
 401     if (sink->window) {
 402         g_object_unref(sink->window);
 403         sink->window = NULL;
 404     }
 405
 406 #if USE_VAAPISINK_GLX
 407     if (sink->use_glx)
 408         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 409     else
 410 #endif
 411         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 412     return sink->window != NULL;
 413 }
 414
 415 static gboolean
 416 gst_vaapisink_start(GstBaseSink *base_sink)
 417 {
 418     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 419
 420     return gst_vaapi_ensure_display(sink, &sink->display);
 421 }
 422
 423 static gboolean
 424 gst_vaapisink_stop(GstBaseSink *base_sink)
 425 {
 426     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 427
 428     if (sink->window) {
 429         g_object_unref(sink->window);
 430         sink->window = NULL;
 431     }
 432
 433     if (sink->display) {
 434         g_object_unref(sink->display);
 435         sink->display = NULL;
 436     }
 437     return TRUE;
 438 }
 439
 440 static gboolean
 441 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 442 {
 443     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 444     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 445     guint win_width, win_height;
 446     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 447
 448     if (!structure)
 449         return FALSE;
 450     if (!gst_structure_get_int(structure, "width",  &video_width))
 451         return FALSE;
 452     if (!gst_structure_get_int(structure, "height", &video_height))
 453         return FALSE;
 454     sink->video_width  = video_width;
 455     sink->video_height = video_height;
 456
 457     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 458     sink->video_par_n  = video_par_n;
 459     sink->video_par_d  = video_par_d;
 460     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 461
 462     if (!gst_vaapi_ensure_display(sink, &sink->display))
 463         return FALSE;
 464
 465     if (sink->fullscreen)
 466         gst_vaapi_display_get_size(sink->display, &win_width, &win_height);
 467     else {
 468         win_width  = video_width;
 469         win_height = video_height;
 470     }
 471
 472     if (sink->window)
 473         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 474     else {
 475         gst_vaapi_display_lock(sink->display);
 476         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 477         gst_vaapi_display_unlock(sink->display);
 478         if (sink->window)
 479             return TRUE;
 480         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 481             return FALSE;
 482         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 483         gst_vaapi_window_show(sink->window);
 484         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 485     }
 486     sink->window_width  = win_width;
 487     sink->window_height = win_height;
 488     GST_DEBUG("window size %ux%u", win_width, win_height);
 489
 490     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 491 }
 492
 493 #if USE_VAAPISINK_GLX
 494 static void
 495 render_background(GstVaapiSink *sink)
 496 {
 497     /* Original code from Mirco Muller (MacSlow):
 498        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 499     GLfloat fStartX = 0.0f;
 500     GLfloat fStartY = 0.0f;
 501     GLfloat fWidth  = (GLfloat)sink->window_width;
 502     GLfloat fHeight = (GLfloat)sink->window_height;
 503
 504     glClear(GL_COLOR_BUFFER_BIT);
 505     glBegin(GL_QUADS);
 506     {
 507         /* top third, darker grey to white */
 508         glColor3f(0.85f, 0.85f, 0.85f);
 509         glVertex3f(fStartX, fStartY, 0.0f);
 510         glColor3f(0.85f, 0.85f, 0.85f);
 511         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 512         glColor3f(1.0f, 1.0f, 1.0f);
 513         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 514         glColor3f(1.0f, 1.0f, 1.0f);
 515         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 516
 517         /* middle third, just plain white */
 518         glColor3f(1.0f, 1.0f, 1.0f);
 519         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 520         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 521         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 522         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 523
 524         /* bottom third, white to lighter grey */
 525         glColor3f(1.0f, 1.0f, 1.0f);
 526         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 527         glColor3f(1.0f, 1.0f, 1.0f);
 528         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 529         glColor3f(0.62f, 0.66f, 0.69f);
 530         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 531         glColor3f(0.62f, 0.66f, 0.69f);
 532         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 533     }
 534     glEnd();
 535 }
 536
 537 static void
 538 render_frame(GstVaapiSink *sink)
 539 {
 540     const guint x1 = sink->display_rect.x;
 541     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 542     const guint y1 = sink->display_rect.y;
 543     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 544
 545     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 546     glBegin(GL_QUADS);
 547     {
 548         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 549         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 550         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 551         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 552     }
 553     glEnd();
 554 }
 555
 556 static void
 557 render_reflection(GstVaapiSink *sink)
 558 {
 559     const guint x1 = sink->display_rect.x;
 560     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 561     const guint y1 = sink->display_rect.y;
 562     const guint rh = sink->display_rect.height / 5;
 563     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 564
 565     glBegin(GL_QUADS);
 566     {
 567         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 568         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 569         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 570
 571         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 572         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 573         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 574     }
 575     glEnd();
 576 }
 577
 578 static gboolean
 579 gst_vaapisink_show_frame_glx(
 580     GstVaapiSink    *sink,
 581     GstVaapiSurface *surface,
 582     guint            flags
 583 )
 584 {
 585     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 586     GLenum target;
 587     GLuint texture;
 588
 589     gst_vaapi_window_glx_make_current(window);
 590     if (!sink->texture) {
 591         sink->texture = gst_vaapi_texture_new(
 592             sink->display,
 593             GL_TEXTURE_2D,
 594             GL_BGRA,
 595             sink->video_width,
 596             sink->video_height
 597         );
 598         if (!sink->texture)
 599             goto error_create_texture;
 600     }
 601     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 602         goto error_transfer_surface;
 603
 604     target  = gst_vaapi_texture_get_target(sink->texture);
 605     texture = gst_vaapi_texture_get_id(sink->texture);
 606     if (target != GL_TEXTURE_2D || !texture)
 607         return FALSE;
 608
 609     if (sink->use_reflection)
 610         render_background(sink);
 611
 612     glEnable(target);
 613     glBindTexture(target, texture);
 614     {
 615         if (sink->use_reflection) {
 616             glPushMatrix();
 617             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 618             glTranslatef(50.0f, 0.0f, 0.0f);
 619         }
 620         render_frame(sink);
 621         if (sink->use_reflection) {
 622             glPushMatrix();
 623             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 624             render_reflection(sink);
 625             glPopMatrix();
 626             glPopMatrix();
 627         }
 628     }
 629     glBindTexture(target, 0);
 630     glDisable(target);
 631     gst_vaapi_window_glx_swap_buffers(window);
 632     return TRUE;
 633
 634     /* ERRORS */
 635 error_create_texture:
 636     {
 637         GST_DEBUG("could not create VA/GLX texture");
 638         return FALSE;
 639     }
 640 error_transfer_surface:
 641     {
 642         GST_DEBUG("could not transfer VA surface to texture");
 643         return FALSE;
 644     }
 645 }
 646 #endif
 647
 648 static inline gboolean
 649 gst_vaapisink_show_frame_x11(
 650     GstVaapiSink    *sink,
 651     GstVaapiSurface *surface,
 652     guint            flags
 653 )
 654 {
 655     if (!gst_vaapi_window_put_surface(sink->window, surface,
 656                 NULL, &sink->display_rect, flags)) {
 657         GST_DEBUG("could not render VA surface");
 658         return FALSE;
 659     }
 660     return TRUE;
 661 }
 662
 663 static GstFlowReturn
 664 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 665 {
 666     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 667     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 668     GstVaapiSurface *surface;
 669     guint flags;
 670     gboolean success;
 671     GstVideoOverlayComposition * const composition =
 672         gst_video_buffer_get_overlay_composition(buffer);
 673
 674     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 675       if (sink->display)
 676         g_object_unref (sink->display);
 677       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 678     }
 679
 680     if (!sink->window)
 681         return GST_FLOW_UNEXPECTED;
 682
 683     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 684     if (!surface)
 685         return GST_FLOW_UNEXPECTED;
 686
 687     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 688               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 689
 690     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 691
 692     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 693              composition, TRUE))
 694         GST_WARNING("could not update subtitles");
 695
 696 #if USE_VAAPISINK_GLX
 697     if (sink->use_glx)
 698         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 699     else
 700 #endif
 701         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 702     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 703 }
 704
 705 static gboolean
 706 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 707 {
 708     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 709     GST_DEBUG ("sharing display %p", sink->display);
 710     return gst_vaapi_reply_to_query (query, sink->display);
 711 }
 712
 713 static void
 714 gst_vaapisink_finalize(GObject *object)
 715 {
 716     gst_vaapisink_destroy(GST_VAAPISINK(object));
 717
 718     G_OBJECT_CLASS(parent_class)->finalize(object);
 719 }
 720
 721 static void
 722 gst_vaapisink_set_property(
 723     GObject      *object,
 724     guint         prop_id,
 725     const GValue *value,
 726     GParamSpec   *pspec
 727 )
 728 {
 729     GstVaapiSink * const sink = GST_VAAPISINK(object);
 730
 731     switch (prop_id) {
 732     case PROP_USE_GLX:
 733         sink->use_glx = g_value_get_boolean(value);
 734         break;
 735     case PROP_FULLSCREEN:
 736         sink->fullscreen = g_value_get_boolean(value);
 737         break;
 738     case PROP_SYNCHRONOUS:
 739         sink->synchronous = g_value_get_boolean(value);
 740         break;
 741     case PROP_USE_REFLECTION:
 742         sink->use_reflection = g_value_get_boolean(value);
 743         break;
 744     default:
 745         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 746         break;
 747     }
 748 }
 749
 750 static void
 751 gst_vaapisink_get_property(
 752     GObject    *object,
 753     guint       prop_id,
 754     GValue     *value,
 755     GParamSpec *pspec
 756 )
 757 {
 758     GstVaapiSink * const sink = GST_VAAPISINK(object);
 759
 760     switch (prop_id) {
 761     case PROP_USE_GLX:
 762         g_value_set_boolean(value, sink->use_glx);
 763         break;
 764     case PROP_FULLSCREEN:
 765         g_value_set_boolean(value, sink->fullscreen);
 766         break;
 767     case PROP_SYNCHRONOUS:
 768         g_value_set_boolean(value, sink->synchronous);
 769         break;
 770     case PROP_USE_REFLECTION:
 771         g_value_set_boolean(value, sink->use_reflection);
 772         break;
 773     default:
 774         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 775         break;
 776     }
 777 }
 778
 779 static void
 780 gst_vaapisink_base_init(gpointer klass)
 781 {
 782     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 783
 784     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 785
 786     gst_element_class_add_pad_template(
 787         element_class,
 788         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 789     );
 790 }
 791
 792 static void
 793 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 794 {
 795     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 796     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 797
 798     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 799                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 800
 801     object_class->finalize       = gst_vaapisink_finalize;
 802     object_class->set_property   = gst_vaapisink_set_property;
 803     object_class->get_property   = gst_vaapisink_get_property;
 804
 805     basesink_class->start        = gst_vaapisink_start;
 806     basesink_class->stop         = gst_vaapisink_stop;
 807     basesink_class->set_caps     = gst_vaapisink_set_caps;
 808     basesink_class->preroll      = gst_vaapisink_show_frame;
 809     basesink_class->render       = gst_vaapisink_show_frame;
 810     basesink_class->query        = gst_vaapisink_query;
 811
 812 #if USE_VAAPISINK_GLX
 813     g_object_class_install_property
 814         (object_class,
 815          PROP_USE_GLX,
 816          g_param_spec_boolean("use-glx",
 817                               "GLX rendering",
 818                               "Enables GLX rendering",
 819                               TRUE,
 820                               G_PARAM_READWRITE));
 821
 822     g_object_class_install_property
 823         (object_class,
 824          PROP_USE_REFLECTION,
 825          g_param_spec_boolean("use-reflection",
 826                               "Reflection effect",
 827                               "Enables OpenGL reflection effect",
 828                               FALSE,
 829                               G_PARAM_READWRITE));
 830 #endif
 831
 832     g_object_class_install_property
 833         (object_class,
 834          PROP_FULLSCREEN,
 835          g_param_spec_boolean("fullscreen",
 836                               "Fullscreen",
 837                               "Requests window in fullscreen state",
 838                               FALSE,
 839                               G_PARAM_READWRITE));
 840
 841     /**
 842      * GstVaapiSink:synchronous:
 843      *
 844      * When enabled, runs the X display in synchronous mode. Note that
 845      * this is used only for debugging.
 846      */
 847     g_object_class_install_property
 848         (object_class,
 849          PROP_SYNCHRONOUS,
 850          g_param_spec_boolean("synchronous",
 851                               "Synchronous mode",
 852                               "Toggles X display synchronous mode",
 853                               FALSE,
 854                               G_PARAM_READWRITE));
 855 }
 856
 857 static void
 858 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 859 {
 860     sink->display        = NULL;
 861     sink->window         = NULL;
 862     sink->window_width   = 0;
 863     sink->window_height  = 0;
 864     sink->texture        = NULL;
 865     sink->video_width    = 0;
 866     sink->video_height   = 0;
 867     sink->video_par_n    = 1;
 868     sink->video_par_d    = 1;
 869     sink->foreign_window = FALSE;
 870     sink->fullscreen     = FALSE;
 871     sink->synchronous    = FALSE;
 872     sink->use_glx        = USE_VAAPISINK_GLX;
 873     sink->use_reflection = FALSE;
 874 }