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/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     gst_caps_replace(&sink->caps, NULL);
 245 }
 246
 247 /* Checks whether a ConfigureNotify event is in the queue */
 248 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 249 struct _ConfigureNotifyEventPendingArgs {
 250     Window      window;
 251     guint       width;
 252     guint       height;
 253     gboolean    match;
 254 };
 255
 256 static Bool
 257 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 258 {
 259     ConfigureNotifyEventPendingArgs * const args =
 260         (ConfigureNotifyEventPendingArgs *)arg;
 261
 262     if (xev->type == ConfigureNotify &&
 263         xev->xconfigure.window == args->window &&
 264         xev->xconfigure.width  == args->width  &&
 265         xev->xconfigure.height == args->height)
 266         args->match = TRUE;
 267
 268     /* XXX: this is a hack to traverse the whole queue because we
 269        can't use XPeekIfEvent() since it could block */
 270     return False;
 271 }
 272
 273 static gboolean
 274 configure_notify_event_pending(
 275     GstVaapiSink *sink,
 276     Window        window,
 277     guint         width,
 278     guint         height
 279 )
 280 {
 281     ConfigureNotifyEventPendingArgs args;
 282     XEvent xev;
 283
 284     args.window = window;
 285     args.width  = width;
 286     args.height = height;
 287     args.match  = FALSE;
 288
 289     /* XXX: don't use XPeekIfEvent() because it might block */
 290     XCheckIfEvent(
 291         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 292         &xev,
 293         configure_notify_event_pending_cb, (XPointer)&args
 294     );
 295     return args.match;
 296 }
 297
 298 static gboolean
 299 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 300 {
 301     GstVaapiRectangle * const display_rect = &sink->display_rect;
 302     guint num, den, display_par_n, display_par_d;
 303     gboolean success;
 304
 305     /* Return success if caps are not set yet */
 306     if (!sink->caps)
 307         return TRUE;
 308
 309     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 310
 311     gst_vaapi_display_get_pixel_aspect_ratio(
 312         sink->display,
 313         &display_par_n, &display_par_d
 314     );
 315     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 316               display_par_n, display_par_d);
 317
 318     success = gst_video_calculate_display_ratio(
 319         &num, &den,
 320         sink->video_width, sink->video_height,
 321         sink->video_par_n, sink->video_par_d,
 322         display_par_n, display_par_d
 323     );
 324     if (!success)
 325         return FALSE;
 326     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 327               sink->video_width, sink->video_height, num, den);
 328
 329     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 330     if (display_rect->width <= width) {
 331         GST_DEBUG("keeping window height");
 332         display_rect->height = height;
 333     }
 334     else {
 335         GST_DEBUG("keeping window width");
 336         display_rect->width  = width;
 337         display_rect->height =
 338             gst_util_uint64_scale_int(width, den, num);
 339     }
 340     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 341
 342     g_assert(display_rect->width  <= width);
 343     g_assert(display_rect->height <= height);
 344
 345     display_rect->x = (width  - display_rect->width)  / 2;
 346     display_rect->y = (height - display_rect->height) / 2;
 347
 348     GST_DEBUG("render rect (%d,%d):%ux%u",
 349               display_rect->x, display_rect->y,
 350               display_rect->width, display_rect->height);
 351     return TRUE;
 352 }
 353
 354 static inline gboolean
 355 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 356 {
 357     GstVaapiDisplay * const display = sink->display;
 358
 359     if (!sink->window) {
 360 #if USE_VAAPISINK_GLX
 361         if (sink->use_glx)
 362             sink->window = gst_vaapi_window_glx_new(display, width, height);
 363         else
 364 #endif
 365             sink->window = gst_vaapi_window_x11_new(display, width, height);
 366         if (sink->window)
 367             gst_x_overlay_got_xwindow_id(
 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_vaapi_ensure_display(sink, &sink->display))
 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     if (sink->window) {
 408         g_object_unref(sink->window);
 409         sink->window = NULL;
 410     }
 411
 412 #if USE_VAAPISINK_GLX
 413     if (sink->use_glx)
 414         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 415     else
 416 #endif
 417         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 418     return sink->window != NULL;
 419 }
 420
 421 static gboolean
 422 gst_vaapisink_start(GstBaseSink *base_sink)
 423 {
 424     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 425
 426     return gst_vaapi_ensure_display(sink, &sink->display);
 427 }
 428
 429 static gboolean
 430 gst_vaapisink_stop(GstBaseSink *base_sink)
 431 {
 432     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 433
 434     if (sink->window) {
 435         g_object_unref(sink->window);
 436         sink->window = NULL;
 437     }
 438
 439     if (sink->display) {
 440         g_object_unref(sink->display);
 441         sink->display = NULL;
 442     }
 443     return TRUE;
 444 }
 445
 446 static gboolean
 447 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 448 {
 449     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 450     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 451     guint win_width, win_height, display_width, display_height;
 452     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 453
 454     if (!structure)
 455         return FALSE;
 456     if (!gst_structure_get_int(structure, "width",  &video_width))
 457         return FALSE;
 458     if (!gst_structure_get_int(structure, "height", &video_height))
 459         return FALSE;
 460     sink->video_width  = video_width;
 461     sink->video_height = video_height;
 462
 463     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 464     sink->video_par_n  = video_par_n;
 465     sink->video_par_d  = video_par_d;
 466     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 467
 468     gst_caps_replace(&sink->caps, caps);
 469
 470     if (!gst_vaapi_ensure_display(sink, &sink->display))
 471         return FALSE;
 472
 473     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 474     if (sink->fullscreen ||
 475         video_width > display_width || video_height > display_height) {
 476         win_width  = display_width;
 477         win_height = display_height;
 478     }
 479     else {
 480         win_width  = video_width;
 481         win_height = video_height;
 482     }
 483
 484     if (sink->window)
 485         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 486     else {
 487         gst_vaapi_display_lock(sink->display);
 488         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 489         gst_vaapi_display_unlock(sink->display);
 490         if (sink->window)
 491             return TRUE;
 492         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 493             return FALSE;
 494         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 495         gst_vaapi_window_show(sink->window);
 496         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 497     }
 498     sink->window_width  = win_width;
 499     sink->window_height = win_height;
 500     GST_DEBUG("window size %ux%u", win_width, win_height);
 501
 502     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 503 }
 504
 505 #if USE_VAAPISINK_GLX
 506 static void
 507 render_background(GstVaapiSink *sink)
 508 {
 509     /* Original code from Mirco Muller (MacSlow):
 510        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 511     GLfloat fStartX = 0.0f;
 512     GLfloat fStartY = 0.0f;
 513     GLfloat fWidth  = (GLfloat)sink->window_width;
 514     GLfloat fHeight = (GLfloat)sink->window_height;
 515
 516     glClear(GL_COLOR_BUFFER_BIT);
 517     glBegin(GL_QUADS);
 518     {
 519         /* top third, darker grey to white */
 520         glColor3f(0.85f, 0.85f, 0.85f);
 521         glVertex3f(fStartX, fStartY, 0.0f);
 522         glColor3f(0.85f, 0.85f, 0.85f);
 523         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 524         glColor3f(1.0f, 1.0f, 1.0f);
 525         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 526         glColor3f(1.0f, 1.0f, 1.0f);
 527         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 528
 529         /* middle third, just plain white */
 530         glColor3f(1.0f, 1.0f, 1.0f);
 531         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 532         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 533         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 534         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 535
 536         /* bottom third, white to lighter grey */
 537         glColor3f(1.0f, 1.0f, 1.0f);
 538         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 539         glColor3f(1.0f, 1.0f, 1.0f);
 540         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 541         glColor3f(0.62f, 0.66f, 0.69f);
 542         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 543         glColor3f(0.62f, 0.66f, 0.69f);
 544         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 545     }
 546     glEnd();
 547 }
 548
 549 static void
 550 render_frame(GstVaapiSink *sink)
 551 {
 552     const guint x1 = sink->display_rect.x;
 553     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 554     const guint y1 = sink->display_rect.y;
 555     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 556
 557     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 558     glBegin(GL_QUADS);
 559     {
 560         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 561         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 562         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 563         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 564     }
 565     glEnd();
 566 }
 567
 568 static void
 569 render_reflection(GstVaapiSink *sink)
 570 {
 571     const guint x1 = sink->display_rect.x;
 572     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 573     const guint y1 = sink->display_rect.y;
 574     const guint rh = sink->display_rect.height / 5;
 575     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 576
 577     glBegin(GL_QUADS);
 578     {
 579         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 580         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 581         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 582
 583         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 584         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 585         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 586     }
 587     glEnd();
 588 }
 589
 590 static gboolean
 591 gst_vaapisink_show_frame_glx(
 592     GstVaapiSink    *sink,
 593     GstVaapiSurface *surface,
 594     guint            flags
 595 )
 596 {
 597     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 598     GLenum target;
 599     GLuint texture;
 600
 601     gst_vaapi_window_glx_make_current(window);
 602     if (!sink->texture) {
 603         sink->texture = gst_vaapi_texture_new(
 604             sink->display,
 605             GL_TEXTURE_2D,
 606             GL_BGRA,
 607             sink->video_width,
 608             sink->video_height
 609         );
 610         if (!sink->texture)
 611             goto error_create_texture;
 612     }
 613     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 614         goto error_transfer_surface;
 615
 616     target  = gst_vaapi_texture_get_target(sink->texture);
 617     texture = gst_vaapi_texture_get_id(sink->texture);
 618     if (target != GL_TEXTURE_2D || !texture)
 619         return FALSE;
 620
 621     if (sink->use_reflection)
 622         render_background(sink);
 623
 624     glEnable(target);
 625     glBindTexture(target, texture);
 626     {
 627         if (sink->use_reflection) {
 628             glPushMatrix();
 629             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 630             glTranslatef(50.0f, 0.0f, 0.0f);
 631         }
 632         render_frame(sink);
 633         if (sink->use_reflection) {
 634             glPushMatrix();
 635             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 636             render_reflection(sink);
 637             glPopMatrix();
 638             glPopMatrix();
 639         }
 640     }
 641     glBindTexture(target, 0);
 642     glDisable(target);
 643     gst_vaapi_window_glx_swap_buffers(window);
 644     return TRUE;
 645
 646     /* ERRORS */
 647 error_create_texture:
 648     {
 649         GST_DEBUG("could not create VA/GLX texture");
 650         return FALSE;
 651     }
 652 error_transfer_surface:
 653     {
 654         GST_DEBUG("could not transfer VA surface to texture");
 655         return FALSE;
 656     }
 657 }
 658 #endif
 659
 660 static inline gboolean
 661 gst_vaapisink_show_frame_x11(
 662     GstVaapiSink    *sink,
 663     GstVaapiSurface *surface,
 664     guint            flags
 665 )
 666 {
 667     if (!gst_vaapi_window_put_surface(sink->window, surface,
 668                 NULL, &sink->display_rect, flags)) {
 669         GST_DEBUG("could not render VA surface");
 670         return FALSE;
 671     }
 672     return TRUE;
 673 }
 674
 675 static GstFlowReturn
 676 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 677 {
 678     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 679     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 680     GstVaapiSurface *surface;
 681     guint flags;
 682     gboolean success;
 683     GstVideoOverlayComposition * const composition =
 684         gst_video_buffer_get_overlay_composition(buffer);
 685
 686     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 687       if (sink->display)
 688         g_object_unref (sink->display);
 689       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 690     }
 691
 692     if (!sink->window)
 693         return GST_FLOW_UNEXPECTED;
 694
 695     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 696     if (!surface)
 697         return GST_FLOW_UNEXPECTED;
 698
 699     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 700               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 701
 702     flags = gst_vaapi_video_buffer_get_render_flags(vbuffer);
 703
 704     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 705              composition, TRUE))
 706         GST_WARNING("could not update subtitles");
 707
 708 #if USE_VAAPISINK_GLX
 709     if (sink->use_glx)
 710         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 711     else
 712 #endif
 713         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 714     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 715 }
 716
 717 static gboolean
 718 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 719 {
 720     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 721     GST_DEBUG ("sharing display %p", sink->display);
 722     return gst_vaapi_reply_to_query (query, sink->display);
 723 }
 724
 725 static void
 726 gst_vaapisink_finalize(GObject *object)
 727 {
 728     gst_vaapisink_destroy(GST_VAAPISINK(object));
 729
 730     G_OBJECT_CLASS(parent_class)->finalize(object);
 731 }
 732
 733 static void
 734 gst_vaapisink_set_property(
 735     GObject      *object,
 736     guint         prop_id,
 737     const GValue *value,
 738     GParamSpec   *pspec
 739 )
 740 {
 741     GstVaapiSink * const sink = GST_VAAPISINK(object);
 742
 743     switch (prop_id) {
 744     case PROP_USE_GLX:
 745         sink->use_glx = g_value_get_boolean(value);
 746         break;
 747     case PROP_FULLSCREEN:
 748         sink->fullscreen = g_value_get_boolean(value);
 749         break;
 750     case PROP_SYNCHRONOUS:
 751         sink->synchronous = g_value_get_boolean(value);
 752         break;
 753     case PROP_USE_REFLECTION:
 754         sink->use_reflection = g_value_get_boolean(value);
 755         break;
 756     default:
 757         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 758         break;
 759     }
 760 }
 761
 762 static void
 763 gst_vaapisink_get_property(
 764     GObject    *object,
 765     guint       prop_id,
 766     GValue     *value,
 767     GParamSpec *pspec
 768 )
 769 {
 770     GstVaapiSink * const sink = GST_VAAPISINK(object);
 771
 772     switch (prop_id) {
 773     case PROP_USE_GLX:
 774         g_value_set_boolean(value, sink->use_glx);
 775         break;
 776     case PROP_FULLSCREEN:
 777         g_value_set_boolean(value, sink->fullscreen);
 778         break;
 779     case PROP_SYNCHRONOUS:
 780         g_value_set_boolean(value, sink->synchronous);
 781         break;
 782     case PROP_USE_REFLECTION:
 783         g_value_set_boolean(value, sink->use_reflection);
 784         break;
 785     default:
 786         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 787         break;
 788     }
 789 }
 790
 791 static void
 792 gst_vaapisink_base_init(gpointer klass)
 793 {
 794     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 795     GstPadTemplate *pad_template;
 796
 797     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 798
 799     pad_template = gst_static_pad_template_get(&gst_vaapisink_sink_factory);
 800     gst_element_class_add_pad_template(element_class, pad_template);
 801     gst_object_unref(pad_template);
 802 }
 803
 804 static void
 805 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 806 {
 807     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 808     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 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 #if USE_VAAPISINK_GLX
 825     g_object_class_install_property
 826         (object_class,
 827          PROP_USE_GLX,
 828          g_param_spec_boolean("use-glx",
 829                               "GLX rendering",
 830                               "Enables GLX rendering",
 831                               TRUE,
 832                               G_PARAM_READWRITE));
 833
 834     g_object_class_install_property
 835         (object_class,
 836          PROP_USE_REFLECTION,
 837          g_param_spec_boolean("use-reflection",
 838                               "Reflection effect",
 839                               "Enables OpenGL reflection effect",
 840                               FALSE,
 841                               G_PARAM_READWRITE));
 842 #endif
 843
 844     g_object_class_install_property
 845         (object_class,
 846          PROP_FULLSCREEN,
 847          g_param_spec_boolean("fullscreen",
 848                               "Fullscreen",
 849                               "Requests window in fullscreen state",
 850                               FALSE,
 851                               G_PARAM_READWRITE));
 852
 853     /**
 854      * GstVaapiSink:synchronous:
 855      *
 856      * When enabled, runs the X display in synchronous mode. Note that
 857      * this is used only for debugging.
 858      */
 859     g_object_class_install_property
 860         (object_class,
 861          PROP_SYNCHRONOUS,
 862          g_param_spec_boolean("synchronous",
 863                               "Synchronous mode",
 864                               "Toggles X display synchronous mode",
 865                               FALSE,
 866                               G_PARAM_READWRITE));
 867 }
 868
 869 static void
 870 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 871 {
 872     sink->caps           = NULL;
 873     sink->display        = NULL;
 874     sink->window         = NULL;
 875     sink->window_width   = 0;
 876     sink->window_height  = 0;
 877     sink->texture        = NULL;
 878     sink->video_width    = 0;
 879     sink->video_height   = 0;
 880     sink->video_par_n    = 1;
 881     sink->video_par_d    = 1;
 882     sink->foreign_window = FALSE;
 883     sink->fullscreen     = FALSE;
 884     sink->synchronous    = FALSE;
 885     sink->use_glx        = USE_VAAPISINK_GLX;
 886     sink->use_reflection = FALSE;
 887 }