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->display) {
 235         g_object_unref(sink->display);
 236         sink->display = NULL;
 237     }
 238 }
 239
 240 /* Checks whether a ConfigureNotify event is in the queue */
 241 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 242 struct _ConfigureNotifyEventPendingArgs {
 243     Window      window;
 244     guint       width;
 245     guint       height;
 246     gboolean    match;
 247 };
 248
 249 static Bool
 250 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 251 {
 252     ConfigureNotifyEventPendingArgs * const args =
 253         (ConfigureNotifyEventPendingArgs *)arg;
 254
 255     if (xev->type == ConfigureNotify &&
 256         xev->xconfigure.window == args->window &&
 257         xev->xconfigure.width  == args->width  &&
 258         xev->xconfigure.height == args->height)
 259         args->match = TRUE;
 260
 261     /* XXX: this is a hack to traverse the whole queue because we
 262        can't use XPeekIfEvent() since it could block */
 263     return False;
 264 }
 265
 266 static gboolean
 267 configure_notify_event_pending(
 268     GstVaapiSink *sink,
 269     Window        window,
 270     guint         width,
 271     guint         height
 272 )
 273 {
 274     ConfigureNotifyEventPendingArgs args;
 275     XEvent xev;
 276
 277     args.window = window;
 278     args.width  = width;
 279     args.height = height;
 280     args.match  = FALSE;
 281
 282     /* XXX: don't use XPeekIfEvent() because it might block */
 283     XCheckIfEvent(
 284         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 285         &xev,
 286         configure_notify_event_pending_cb, (XPointer)&args
 287     );
 288     return args.match;
 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     double display_ratio;
 297     gboolean success;
 298
 299     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 300
 301     gst_vaapi_display_get_pixel_aspect_ratio(
 302         sink->display,
 303         &display_par_n, &display_par_d
 304     );
 305     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 306               display_par_n, display_par_d);
 307
 308     success = gst_video_calculate_display_ratio(
 309         &num, &den,
 310         sink->video_width, sink->video_height,
 311         sink->video_par_n, sink->video_par_d,
 312         display_par_n, display_par_d
 313     );
 314     if (!success)
 315         return FALSE;
 316     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 317               sink->video_width, sink->video_height, num, den);
 318
 319     if ((sink->video_height % den) == 0) {
 320         GST_DEBUG("keeping video height");
 321         display_rect->width  =
 322             gst_util_uint64_scale_int(sink->video_height, num, den);
 323         display_rect->height = sink->video_height;
 324     }
 325     else if ((sink->video_width % num) == 0) {
 326         GST_DEBUG("keeping video width");
 327         display_rect->width  = sink->video_width;
 328         display_rect->height =
 329             gst_util_uint64_scale_int(sink->video_width, den, num);
 330     }
 331     else {
 332         GST_DEBUG("approximating while keeping video height");
 333         display_rect->width  =
 334             gst_util_uint64_scale_int(sink->video_height, num, den);
 335         display_rect->height = sink->video_height;
 336     }
 337     display_ratio = (gdouble)display_rect->width / display_rect->height;
 338     GST_DEBUG("scaling to %ux%u", display_rect->width, display_rect->height);
 339
 340     if (sink->fullscreen || sink->foreign_window ||
 341         display_rect->width > width || display_rect->height > height) {
 342         if (sink->video_width > sink->video_height) {
 343             display_rect->width  = width;
 344             display_rect->height = width / display_ratio;
 345         }
 346         else {
 347             display_rect->width  = height * display_ratio;
 348             display_rect->height = height;
 349         }
 350     }
 351
 352     if (sink->fullscreen) {
 353         display_rect->x  = (width  - display_rect->width)  / 2;
 354         display_rect->y  = (height - display_rect->height) / 2;
 355     }
 356     else {
 357         display_rect->x  = 0;
 358         display_rect->y  = 0;
 359     }
 360
 361     GST_DEBUG("render rect (%d,%d):%ux%u",
 362               display_rect->x, display_rect->y,
 363               display_rect->width, display_rect->height);
 364     return TRUE;
 365 }
 366
 367 static inline gboolean
 368 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 369 {
 370     GstVaapiDisplay * const display = sink->display;
 371
 372     if (!sink->window) {
 373 #if USE_VAAPISINK_GLX
 374         if (sink->use_glx)
 375             sink->window = gst_vaapi_window_glx_new(display, width, height);
 376         else
 377 #endif
 378             sink->window = gst_vaapi_window_x11_new(display, width, height);
 379         if (sink->window)
 380             gst_x_overlay_got_xwindow_id(
 381                 GST_X_OVERLAY(sink),
 382                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 383             );
 384     }
 385     return sink->window != NULL;
 386 }
 387
 388 static gboolean
 389 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 390 {
 391     Window rootwin;
 392     unsigned int width, height, border_width, depth;
 393     int x, y;
 394     XID xid = window_id;
 395
 396     if (!gst_vaapi_ensure_display(sink, &sink->display))
 397         return FALSE;
 398
 399     gst_vaapi_display_lock(sink->display);
 400     XGetGeometry(
 401         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 402         xid,
 403         &rootwin,
 404         &x, &y, &width, &height, &border_width, &depth
 405     );
 406     gst_vaapi_display_unlock(sink->display);
 407
 408     if ((width != sink->window_width || height != sink->window_height) &&
 409         !configure_notify_event_pending(sink, xid, width, height)) {
 410         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 411             return FALSE;
 412         sink->window_width  = width;
 413         sink->window_height = height;
 414     }
 415
 416     if (sink->window &&
 417         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 418         return TRUE;
 419
 420     if (sink->window) {
 421         g_object_unref(sink->window);
 422         sink->window = NULL;
 423     }
 424
 425 #if USE_VAAPISINK_GLX
 426     if (sink->use_glx)
 427         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 428     else
 429 #endif
 430         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 431     return sink->window != NULL;
 432 }
 433
 434 static gboolean
 435 gst_vaapisink_start(GstBaseSink *base_sink)
 436 {
 437     return TRUE;
 438 }
 439
 440 static gboolean
 441 gst_vaapisink_stop(GstBaseSink *base_sink)
 442 {
 443     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 444
 445     if (sink->window) {
 446         g_object_unref(sink->window);
 447         sink->window = NULL;
 448     }
 449
 450     if (sink->display) {
 451         g_object_unref(sink->display);
 452         sink->display = NULL;
 453     }
 454     return TRUE;
 455 }
 456
 457 static gboolean
 458 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 459 {
 460     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 461     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 462     guint display_width, display_height, win_width, win_height;
 463     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 464
 465     if (!structure)
 466         return FALSE;
 467     if (!gst_structure_get_int(structure, "width",  &video_width))
 468         return FALSE;
 469     if (!gst_structure_get_int(structure, "height", &video_height))
 470         return FALSE;
 471     sink->video_width  = video_width;
 472     sink->video_height = video_height;
 473
 474     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 475     sink->video_par_n  = video_par_n;
 476     sink->video_par_d  = video_par_d;
 477     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 478
 479     if (!gst_vaapi_ensure_display(sink, &sink->display))
 480         return FALSE;
 481
 482     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 483     if (!gst_vaapisink_ensure_render_rect(sink, display_width, display_height))
 484         return FALSE;
 485
 486     if (sink->fullscreen) {
 487         win_width  = display_width;
 488         win_height = display_height;
 489     }
 490     else {
 491         win_width  = sink->display_rect.width;
 492         win_height = sink->display_rect.height;
 493     }
 494
 495     if (sink->window)
 496         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 497     else {
 498         gst_vaapi_display_lock(sink->display);
 499         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 500         gst_vaapi_display_unlock(sink->display);
 501         if (sink->window)
 502             return TRUE;
 503         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 504             return FALSE;
 505         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 506         gst_vaapi_window_show(sink->window);
 507     }
 508     sink->window_width  = win_width;
 509     sink->window_height = win_height;
 510     return TRUE;
 511 }
 512
 513 #if USE_VAAPISINK_GLX
 514 static void
 515 render_background(GstVaapiSink *sink)
 516 {
 517     /* Original code from Mirco Muller (MacSlow):
 518        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 519     GLfloat fStartX = 0.0f;
 520     GLfloat fStartY = 0.0f;
 521     GLfloat fWidth  = (GLfloat)sink->window_width;
 522     GLfloat fHeight = (GLfloat)sink->window_height;
 523
 524     glClear(GL_COLOR_BUFFER_BIT);
 525     glBegin(GL_QUADS);
 526     {
 527         /* top third, darker grey to white */
 528         glColor3f(0.85f, 0.85f, 0.85f);
 529         glVertex3f(fStartX, fStartY, 0.0f);
 530         glColor3f(0.85f, 0.85f, 0.85f);
 531         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 532         glColor3f(1.0f, 1.0f, 1.0f);
 533         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 534         glColor3f(1.0f, 1.0f, 1.0f);
 535         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 536
 537         /* middle third, just plain white */
 538         glColor3f(1.0f, 1.0f, 1.0f);
 539         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 540         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 541         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 542         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 543
 544         /* bottom third, white to lighter grey */
 545         glColor3f(1.0f, 1.0f, 1.0f);
 546         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 547         glColor3f(1.0f, 1.0f, 1.0f);
 548         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 549         glColor3f(0.62f, 0.66f, 0.69f);
 550         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 551         glColor3f(0.62f, 0.66f, 0.69f);
 552         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 553     }
 554     glEnd();
 555 }
 556
 557 static void
 558 render_frame(GstVaapiSink *sink)
 559 {
 560     const guint x1 = sink->display_rect.x;
 561     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 562     const guint y1 = sink->display_rect.y;
 563     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 564
 565     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 566     glBegin(GL_QUADS);
 567     {
 568         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 569         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 570         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 571         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 572     }
 573     glEnd();
 574 }
 575
 576 static void
 577 render_reflection(GstVaapiSink *sink)
 578 {
 579     const guint x1 = sink->display_rect.x;
 580     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 581     const guint y1 = sink->display_rect.y;
 582     const guint rh = sink->display_rect.height / 5;
 583     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 584
 585     glBegin(GL_QUADS);
 586     {
 587         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 588         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 589         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 590
 591         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 592         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 593         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 594     }
 595     glEnd();
 596 }
 597
 598 static gboolean
 599 gst_vaapisink_show_frame_glx(
 600     GstVaapiSink    *sink,
 601     GstVaapiSurface *surface,
 602     guint            flags
 603 )
 604 {
 605     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 606     GLenum target;
 607     GLuint texture;
 608
 609     gst_vaapi_window_glx_make_current(window);
 610     if (!sink->texture) {
 611         sink->texture = gst_vaapi_texture_new(
 612             sink->display,
 613             GL_TEXTURE_2D,
 614             GL_BGRA,
 615             sink->video_width,
 616             sink->video_height
 617         );
 618         if (!sink->texture)
 619             goto error_create_texture;
 620     }
 621     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 622         goto error_transfer_surface;
 623
 624     target  = gst_vaapi_texture_get_target(sink->texture);
 625     texture = gst_vaapi_texture_get_id(sink->texture);
 626     if (target != GL_TEXTURE_2D || !texture)
 627         return FALSE;
 628
 629     if (sink->use_reflection)
 630         render_background(sink);
 631
 632     glEnable(target);
 633     glBindTexture(target, texture);
 634     {
 635         if (sink->use_reflection) {
 636             glPushMatrix();
 637             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 638             glTranslatef(50.0f, 0.0f, 0.0f);
 639         }
 640         render_frame(sink);
 641         if (sink->use_reflection) {
 642             glPushMatrix();
 643             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 644             render_reflection(sink);
 645             glPopMatrix();
 646             glPopMatrix();
 647         }
 648     }
 649     glBindTexture(target, 0);
 650     glDisable(target);
 651     gst_vaapi_window_glx_swap_buffers(window);
 652     return TRUE;
 653
 654     /* ERRORS */
 655 error_create_texture:
 656     {
 657         GST_DEBUG("could not create VA/GLX texture");
 658         return FALSE;
 659     }
 660 error_transfer_surface:
 661     {
 662         GST_DEBUG("could not transfer VA surface to texture");
 663         return FALSE;
 664     }
 665 }
 666 #endif
 667
 668 static inline gboolean
 669 gst_vaapisink_show_frame_x11(
 670     GstVaapiSink    *sink,
 671     GstVaapiSurface *surface,
 672     guint            flags
 673 )
 674 {
 675     if (!gst_vaapi_window_put_surface(sink->window, surface,
 676                 NULL, &sink->display_rect, flags)) {
 677         GST_DEBUG("could not render VA surface");
 678         return FALSE;
 679     }
 680     return TRUE;
 681 }
 682
 683 static GstFlowReturn
 684 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 685 {
 686     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 687     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 688     GstVaapiSurface *surface;
 689     guint flags;
 690     gboolean success;
 691     GstVideoOverlayComposition * const composition =
 692         gst_video_buffer_get_overlay_composition(buffer);
 693
 694     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 695       if (sink->display)
 696         g_object_unref (sink->display);
 697       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 698     }
 699
 700     if (!sink->window)
 701         return GST_FLOW_UNEXPECTED;
 702
 703     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 704     if (!surface)
 705         return GST_FLOW_UNEXPECTED;
 706
 707     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 708               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 709
 710     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 711
 712     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 713              composition, TRUE))
 714         GST_WARNING("could not update subtitles");
 715
 716 #if USE_VAAPISINK_GLX
 717     if (sink->use_glx)
 718         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 719     else
 720 #endif
 721         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 722     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 723 }
 724
 725 static gboolean
 726 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 727 {
 728     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 729     GST_DEBUG ("sharing display %p", sink->display);
 730     return gst_vaapi_reply_to_query (query, sink->display);
 731 }
 732
 733 static void
 734 gst_vaapisink_finalize(GObject *object)
 735 {
 736     gst_vaapisink_destroy(GST_VAAPISINK(object));
 737
 738     G_OBJECT_CLASS(parent_class)->finalize(object);
 739 }
 740
 741 static void
 742 gst_vaapisink_set_property(
 743     GObject      *object,
 744     guint         prop_id,
 745     const GValue *value,
 746     GParamSpec   *pspec
 747 )
 748 {
 749     GstVaapiSink * const sink = GST_VAAPISINK(object);
 750
 751     switch (prop_id) {
 752     case PROP_USE_GLX:
 753         sink->use_glx = g_value_get_boolean(value);
 754         break;
 755     case PROP_FULLSCREEN:
 756         sink->fullscreen = g_value_get_boolean(value);
 757         break;
 758     case PROP_SYNCHRONOUS:
 759         sink->synchronous = g_value_get_boolean(value);
 760         break;
 761     case PROP_USE_REFLECTION:
 762         sink->use_reflection = g_value_get_boolean(value);
 763         break;
 764     default:
 765         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 766         break;
 767     }
 768 }
 769
 770 static void
 771 gst_vaapisink_get_property(
 772     GObject    *object,
 773     guint       prop_id,
 774     GValue     *value,
 775     GParamSpec *pspec
 776 )
 777 {
 778     GstVaapiSink * const sink = GST_VAAPISINK(object);
 779
 780     switch (prop_id) {
 781     case PROP_USE_GLX:
 782         g_value_set_boolean(value, sink->use_glx);
 783         break;
 784     case PROP_FULLSCREEN:
 785         g_value_set_boolean(value, sink->fullscreen);
 786         break;
 787     case PROP_SYNCHRONOUS:
 788         g_value_set_boolean(value, sink->synchronous);
 789         break;
 790     case PROP_USE_REFLECTION:
 791         g_value_set_boolean(value, sink->use_reflection);
 792         break;
 793     default:
 794         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 795         break;
 796     }
 797 }
 798
 799 static void
 800 gst_vaapisink_base_init(gpointer klass)
 801 {
 802     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 803
 804     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 805
 806     gst_element_class_add_pad_template(
 807         element_class,
 808         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 809     );
 810 }
 811
 812 static void
 813 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 814 {
 815     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 816     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 817
 818     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 819                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 820
 821     object_class->finalize       = gst_vaapisink_finalize;
 822     object_class->set_property   = gst_vaapisink_set_property;
 823     object_class->get_property   = gst_vaapisink_get_property;
 824
 825     basesink_class->start        = gst_vaapisink_start;
 826     basesink_class->stop         = gst_vaapisink_stop;
 827     basesink_class->set_caps     = gst_vaapisink_set_caps;
 828     basesink_class->preroll      = gst_vaapisink_show_frame;
 829     basesink_class->render       = gst_vaapisink_show_frame;
 830     basesink_class->query        = gst_vaapisink_query;
 831
 832 #if USE_VAAPISINK_GLX
 833     g_object_class_install_property
 834         (object_class,
 835          PROP_USE_GLX,
 836          g_param_spec_boolean("use-glx",
 837                               "GLX rendering",
 838                               "Enables GLX rendering",
 839                               TRUE,
 840                               G_PARAM_READWRITE));
 841
 842     g_object_class_install_property
 843         (object_class,
 844          PROP_USE_REFLECTION,
 845          g_param_spec_boolean("use-reflection",
 846                               "Reflection effect",
 847                               "Enables OpenGL reflection effect",
 848                               FALSE,
 849                               G_PARAM_READWRITE));
 850 #endif
 851
 852     g_object_class_install_property
 853         (object_class,
 854          PROP_FULLSCREEN,
 855          g_param_spec_boolean("fullscreen",
 856                               "Fullscreen",
 857                               "Requests window in fullscreen state",
 858                               FALSE,
 859                               G_PARAM_READWRITE));
 860
 861     /**
 862      * GstVaapiSink:synchronous:
 863      *
 864      * When enabled, runs the X display in synchronous mode. Note that
 865      * this is used only for debugging.
 866      */
 867     g_object_class_install_property
 868         (object_class,
 869          PROP_SYNCHRONOUS,
 870          g_param_spec_boolean("synchronous",
 871                               "Synchronous mode",
 872                               "Toggles X display synchronous mode",
 873                               FALSE,
 874                               G_PARAM_READWRITE));
 875 }
 876
 877 static void
 878 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 879 {
 880     sink->display        = NULL;
 881     sink->window         = NULL;
 882     sink->window_width   = 0;
 883     sink->window_height  = 0;
 884     sink->texture        = NULL;
 885     sink->video_width    = 0;
 886     sink->video_height   = 0;
 887     sink->video_par_n    = 1;
 888     sink->video_par_d    = 1;
 889     sink->foreign_window = FALSE;
 890     sink->fullscreen     = FALSE;
 891     sink->synchronous    = FALSE;
 892     sink->use_glx        = USE_VAAPISINK_GLX;
 893     sink->use_reflection = FALSE;
 894 }