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/video/video.h>
  35 #include <gst/gstutils_version.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_VAAPISINK_GLX
  41 #include <gst/vaapi/gstvaapidisplay_glx.h>
  42 #include <gst/vaapi/gstvaapiwindow_glx.h>
  43 #endif
  44 #include "gstvaapisink.h"
  45
  46 /* Supported interfaces */
  47 #include <gst/interfaces/xoverlay.h>
  48
  49 #define HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE \
  50     GST_PLUGINS_BASE_CHECK_VERSION(0,10,31)
  51
  52 #define GST_PLUGIN_NAME "vaapisink"
  53 #define GST_PLUGIN_DESC "A VA-API based videosink"
  54
  55 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  56 #define GST_CAT_DEFAULT gst_debug_vaapisink
  57
  58 /* ElementFactory information */
  59 static const GstElementDetails gst_vaapisink_details =
  60     GST_ELEMENT_DETAILS(
  61         "VA-API sink",
  62         "Sink/Video",
  63         GST_PLUGIN_DESC,
  64         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  65
  66 /* Default template */
  67 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  68     GST_STATIC_PAD_TEMPLATE(
  69         "sink",
  70         GST_PAD_SINK,
  71         GST_PAD_ALWAYS,
  72         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  73
  74 static void gst_vaapisink_iface_init(GType type);
  75
  76 GST_BOILERPLATE_FULL(
  77     GstVaapiSink,
  78     gst_vaapisink,
  79     GstVideoSink,
  80     GST_TYPE_VIDEO_SINK,
  81     gst_vaapisink_iface_init);
  82
  83 enum {
  84     PROP_0,
  85
  86     PROP_USE_GLX,
  87     PROP_DISPLAY,
  88     PROP_FULLSCREEN,
  89     PROP_SYNCHRONOUS,
  90     PROP_USE_REFLECTION
  91 };
  92
  93 /* GstImplementsInterface interface */
  94
  95 static gboolean
  96 gst_vaapisink_implements_interface_supported(
  97     GstImplementsInterface *iface,
  98     GType                   type
  99 )
 100 {
 101     return (type == GST_VAAPI_TYPE_VIDEO_SINK ||
 102             type == GST_TYPE_X_OVERLAY);
 103 }
 104
 105 static void
 106 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 107 {
 108     iface->supported = gst_vaapisink_implements_interface_supported;
 109 }
 110
 111 /* GstVaapiVideoSink interface */
 112
 113 static GstVaapiDisplay *
 114 gst_vaapisink_get_display(GstVaapiSink *sink);
 115
 116 static GstVaapiDisplay *
 117 gst_vaapi_video_sink_do_get_display(GstVaapiVideoSink *sink)
 118 {
 119     return gst_vaapisink_get_display(GST_VAAPISINK(sink));
 120 }
 121
 122 static void
 123 gst_vaapi_video_sink_iface_init(GstVaapiVideoSinkInterface *iface)
 124 {
 125     iface->get_display = gst_vaapi_video_sink_do_get_display;
 126 }
 127
 128 /* GstXOverlay interface */
 129
 130 static gboolean
 131 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 132
 133 static GstFlowReturn
 134 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 135
 136 static inline void
 137 _gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, guintptr window_id)
 138 {
 139     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 140
 141     /* Disable GLX rendering when vaapisink is using a foreign X
 142        window. It's pretty much useless */
 143     sink->use_glx = FALSE;
 144
 145     sink->foreign_window = TRUE;
 146     gst_vaapisink_ensure_window_xid(sink, window_id);
 147 }
 148
 149 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 150 static void
 151 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window_id)
 152 {
 153     _gst_vaapisink_xoverlay_set_xid(overlay, window_id);
 154 }
 155 #else
 156 static void
 157 gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, XID xid)
 158 {
 159     _gst_vaapisink_xoverlay_set_xid(overlay, xid);
 160 }
 161 #endif
 162
 163 static void
 164 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 165 {
 166     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 167     GstBuffer *buffer;
 168
 169     buffer = gst_base_sink_get_last_buffer(base_sink);
 170     if (buffer) {
 171         gst_vaapisink_show_frame(base_sink, buffer);
 172         gst_buffer_unref(buffer);
 173     }
 174 }
 175
 176 static void
 177 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 178 {
 179 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 180     iface->set_window_handle = gst_vaapisink_xoverlay_set_window_handle;
 181 #else
 182     iface->set_xwindow_id    = gst_vaapisink_xoverlay_set_xid;
 183 #endif
 184     iface->expose            = gst_vaapisink_xoverlay_expose;
 185 }
 186
 187 static void
 188 gst_vaapisink_iface_init(GType type)
 189 {
 190     const GType g_define_type_id = type;
 191
 192     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
 193                           gst_vaapisink_implements_iface_init);
 194     G_IMPLEMENT_INTERFACE(GST_VAAPI_TYPE_VIDEO_SINK,
 195                           gst_vaapi_video_sink_iface_init);
 196     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
 197                           gst_vaapisink_xoverlay_iface_init);
 198 }
 199
 200 static void
 201 gst_vaapisink_destroy(GstVaapiSink *sink)
 202 {
 203     if (sink->display) {
 204         g_object_unref(sink->display);
 205         sink->display = NULL;
 206     }
 207
 208     if (sink->display_name) {
 209         g_free(sink->display_name);
 210         sink->display_name = NULL;
 211     }
 212 }
 213
 214 /* Checks whether a ConfigureNotify event is in the queue */
 215 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 216 struct _ConfigureNotifyEventPendingArgs {
 217     Window      window;
 218     guint       width;
 219     guint       height;
 220     gboolean    match;
 221 };
 222
 223 static Bool
 224 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 225 {
 226     ConfigureNotifyEventPendingArgs * const args =
 227         (ConfigureNotifyEventPendingArgs *)arg;
 228
 229     if (xev->type == ConfigureNotify &&
 230         xev->xconfigure.window == args->window &&
 231         xev->xconfigure.width  == args->width  &&
 232         xev->xconfigure.height == args->height)
 233         args->match = TRUE;
 234
 235     /* XXX: this is a hack to traverse the whole queue because we
 236        can't use XPeekIfEvent() since it could block */
 237     return False;
 238 }
 239
 240 static gboolean
 241 configure_notify_event_pending(
 242     GstVaapiSink *sink,
 243     Window        window,
 244     guint         width,
 245     guint         height
 246 )
 247 {
 248     ConfigureNotifyEventPendingArgs args;
 249     XEvent xev;
 250
 251     args.window = window;
 252     args.width  = width;
 253     args.height = height;
 254     args.match  = FALSE;
 255
 256     /* XXX: don't use XPeekIfEvent() because it might block */
 257     XCheckIfEvent(
 258         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 259         &xev,
 260         configure_notify_event_pending_cb, (XPointer)&args
 261     );
 262     return args.match;
 263 }
 264
 265 static inline gboolean
 266 gst_vaapisink_ensure_display(GstVaapiSink *sink)
 267 {
 268     if (!sink->display) {
 269 #if USE_VAAPISINK_GLX
 270         if (sink->use_glx)
 271             sink->display = gst_vaapi_display_glx_new(sink->display_name);
 272         else
 273 #endif
 274             sink->display = gst_vaapi_display_x11_new(sink->display_name);
 275         if (!sink->display || !gst_vaapi_display_get_display(sink->display))
 276             return FALSE;
 277         g_object_set(sink, "synchronous", sink->synchronous, NULL);
 278     }
 279     return sink->display != NULL;
 280 }
 281
 282 static gboolean
 283 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 284 {
 285     GstVaapiRectangle * const display_rect = &sink->display_rect;
 286     guint num, den, display_par_n, display_par_d;
 287     double display_ratio;
 288     gboolean success;
 289
 290     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 291
 292     gst_vaapi_display_get_pixel_aspect_ratio(
 293         sink->display,
 294         &display_par_n, &display_par_d
 295     );
 296     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 297               display_par_n, display_par_d);
 298
 299     success = gst_video_calculate_display_ratio(
 300         &num, &den,
 301         sink->video_width, sink->video_height,
 302         sink->video_par_n, sink->video_par_d,
 303         display_par_n, display_par_d
 304     );
 305     if (!success)
 306         return FALSE;
 307     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 308               sink->video_width, sink->video_height, num, den);
 309
 310     if ((sink->video_height % den) == 0) {
 311         GST_DEBUG("keeping video height");
 312         display_rect->width  =
 313             gst_util_uint64_scale_int(sink->video_height, num, den);
 314         display_rect->height = sink->video_height;
 315     }
 316     else if ((sink->video_width % num) == 0) {
 317         GST_DEBUG("keeping video width");
 318         display_rect->width  = sink->video_width;
 319         display_rect->height =
 320             gst_util_uint64_scale_int(sink->video_width, den, num);
 321     }
 322     else {
 323         GST_DEBUG("approximating while keeping video height");
 324         display_rect->width  =
 325             gst_util_uint64_scale_int(sink->video_height, num, den);
 326         display_rect->height = sink->video_height;
 327     }
 328     display_ratio = (gdouble)display_rect->width / display_rect->height;
 329     GST_DEBUG("scaling to %ux%u", display_rect->width, display_rect->height);
 330
 331     if (sink->fullscreen || sink->foreign_window ||
 332         display_rect->width > width || display_rect->height > height) {
 333         if (sink->video_width > sink->video_height) {
 334             display_rect->width  = width;
 335             display_rect->height = width / display_ratio;
 336         }
 337         else {
 338             display_rect->width  = height * display_ratio;
 339             display_rect->height = height;
 340         }
 341     }
 342
 343     if (sink->fullscreen) {
 344         display_rect->x  = (width  - display_rect->width)  / 2;
 345         display_rect->y  = (height - display_rect->height) / 2;
 346     }
 347     else {
 348         display_rect->x  = 0;
 349         display_rect->y  = 0;
 350     }
 351
 352     GST_DEBUG("render rect (%d,%d):%ux%u",
 353               display_rect->x, display_rect->y,
 354               display_rect->width, display_rect->height);
 355     return TRUE;
 356 }
 357
 358 static inline gboolean
 359 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 360 {
 361     GstVaapiDisplay * const display = sink->display;
 362
 363     if (!sink->window) {
 364 #if USE_VAAPISINK_GLX
 365         if (sink->use_glx)
 366             sink->window = gst_vaapi_window_glx_new(display, width, height);
 367         else
 368 #endif
 369             sink->window = gst_vaapi_window_x11_new(display, width, height);
 370         if (sink->window)
 371             gst_x_overlay_got_xwindow_id(
 372                 GST_X_OVERLAY(sink),
 373                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 374             );
 375     }
 376     return sink->window != NULL;
 377 }
 378
 379 static gboolean
 380 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 381 {
 382     Window rootwin;
 383     unsigned int width, height, border_width, depth;
 384     int x, y;
 385     XID xid = window_id;
 386
 387     if (!gst_vaapisink_ensure_display(sink))
 388         return FALSE;
 389
 390     gst_vaapi_display_lock(sink->display);
 391     XGetGeometry(
 392         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 393         xid,
 394         &rootwin,
 395         &x, &y, &width, &height, &border_width, &depth
 396     );
 397     gst_vaapi_display_unlock(sink->display);
 398
 399     if ((width != sink->window_width || height != sink->window_height) &&
 400         !configure_notify_event_pending(sink, xid, width, height)) {
 401         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 402             return FALSE;
 403         sink->window_width  = width;
 404         sink->window_height = height;
 405     }
 406
 407     if (sink->window &&
 408         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 409         return TRUE;
 410
 411     if (sink->window) {
 412         g_object_unref(sink->window);
 413         sink->window = NULL;
 414     }
 415
 416 #if USE_VAAPISINK_GLX
 417     if (sink->use_glx)
 418         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 419     else
 420 #endif
 421         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 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     if (!gst_vaapisink_ensure_display(sink))
 431         return FALSE;
 432     return TRUE;
 433 }
 434
 435 static gboolean
 436 gst_vaapisink_stop(GstBaseSink *base_sink)
 437 {
 438     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 439
 440     if (sink->window) {
 441         g_object_unref(sink->window);
 442         sink->window = NULL;
 443     }
 444
 445     if (sink->display) {
 446         g_object_unref(sink->display);
 447         sink->display = NULL;
 448     }
 449     return TRUE;
 450 }
 451
 452 static gboolean
 453 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 454 {
 455     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 456     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 457     guint display_width, display_height, win_width, win_height;
 458     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 459
 460     if (!structure)
 461         return FALSE;
 462     if (!gst_structure_get_int(structure, "width",  &video_width))
 463         return FALSE;
 464     if (!gst_structure_get_int(structure, "height", &video_height))
 465         return FALSE;
 466     sink->video_width  = video_width;
 467     sink->video_height = video_height;
 468
 469     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 470     sink->video_par_n  = video_par_n;
 471     sink->video_par_d  = video_par_d;
 472     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 473
 474     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 475     if (!gst_vaapisink_ensure_render_rect(sink, display_width, display_height))
 476         return FALSE;
 477
 478     if (sink->fullscreen) {
 479         win_width  = display_width;
 480         win_height = display_height;
 481     }
 482     else {
 483         win_width  = sink->display_rect.width;
 484         win_height = sink->display_rect.height;
 485     }
 486
 487     if (sink->window)
 488         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 489     else {
 490         gst_vaapi_display_lock(sink->display);
 491         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 492         gst_vaapi_display_unlock(sink->display);
 493         if (sink->window)
 494             return TRUE;
 495         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 496             return FALSE;
 497         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 498         gst_vaapi_window_show(sink->window);
 499     }
 500     sink->window_width  = win_width;
 501     sink->window_height = win_height;
 502     return TRUE;
 503 }
 504
 505 static GstFlowReturn
 506 gst_vaapisink_buffer_alloc(
 507     GstBaseSink *base_sink,
 508     guint64      offset,
 509     guint        size,
 510     GstCaps     *caps,
 511     GstBuffer  **pout_buffer
 512 )
 513 {
 514     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 515     GstStructure *structure;
 516     GstBuffer *buffer;
 517
 518     structure = gst_caps_get_structure(caps, 0);
 519     if (!gst_structure_has_name(structure, "video/x-vaapi-surface"))
 520         goto error_invalid_caps;
 521
 522     buffer = gst_vaapi_video_buffer_new(sink->display);
 523     if (!buffer)
 524         goto error_create_buffer;
 525
 526     gst_buffer_set_caps(buffer, caps);
 527     *pout_buffer = buffer;
 528     return GST_FLOW_OK;
 529
 530     /* ERRORS */
 531 error_invalid_caps:
 532     {
 533         GST_ERROR("failed to validate input caps");
 534         return GST_FLOW_UNEXPECTED;
 535     }
 536 error_create_buffer:
 537     {
 538         GST_ERROR("failed to create video buffer");
 539         return GST_FLOW_UNEXPECTED;
 540     }
 541 }
 542
 543 #if USE_VAAPISINK_GLX
 544 static void
 545 render_background(GstVaapiSink *sink)
 546 {
 547     /* Original code from Mirco Muller (MacSlow):
 548        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 549     GLfloat fStartX = 0.0f;
 550     GLfloat fStartY = 0.0f;
 551     GLfloat fWidth  = (GLfloat)sink->window_width;
 552     GLfloat fHeight = (GLfloat)sink->window_height;
 553
 554     glClear(GL_COLOR_BUFFER_BIT);
 555     glBegin(GL_QUADS);
 556     {
 557         /* top third, darker grey to white */
 558         glColor3f(0.85f, 0.85f, 0.85f);
 559         glVertex3f(fStartX, fStartY, 0.0f);
 560         glColor3f(0.85f, 0.85f, 0.85f);
 561         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 562         glColor3f(1.0f, 1.0f, 1.0f);
 563         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 564         glColor3f(1.0f, 1.0f, 1.0f);
 565         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 566
 567         /* middle third, just plain white */
 568         glColor3f(1.0f, 1.0f, 1.0f);
 569         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 570         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 571         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 572         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 573
 574         /* bottom third, white to lighter grey */
 575         glColor3f(1.0f, 1.0f, 1.0f);
 576         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 577         glColor3f(1.0f, 1.0f, 1.0f);
 578         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 579         glColor3f(0.62f, 0.66f, 0.69f);
 580         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 581         glColor3f(0.62f, 0.66f, 0.69f);
 582         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 583     }
 584     glEnd();
 585 }
 586
 587 static void
 588 render_frame(GstVaapiSink *sink)
 589 {
 590     const guint x1 = sink->display_rect.x;
 591     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 592     const guint y1 = sink->display_rect.y;
 593     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 594
 595     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 596     glBegin(GL_QUADS);
 597     {
 598         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 599         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 600         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 601         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 602     }
 603     glEnd();
 604 }
 605
 606 static void
 607 render_reflection(GstVaapiSink *sink)
 608 {
 609     const guint x1 = sink->display_rect.x;
 610     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 611     const guint y1 = sink->display_rect.y;
 612     const guint rh = sink->display_rect.height / 5;
 613     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 614
 615     glBegin(GL_QUADS);
 616     {
 617         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 618         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 619         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 620
 621         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 622         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 623         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 624     }
 625     glEnd();
 626 }
 627
 628 static gboolean
 629 gst_vaapisink_show_frame_glx(
 630     GstVaapiSink    *sink,
 631     GstVaapiSurface *surface,
 632     guint            flags
 633 )
 634 {
 635     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 636     GLenum target;
 637     GLuint texture;
 638
 639     gst_vaapi_window_glx_make_current(window);
 640     if (!sink->texture) {
 641         sink->texture = gst_vaapi_texture_new(
 642             sink->display,
 643             GL_TEXTURE_2D,
 644             GL_BGRA,
 645             sink->video_width,
 646             sink->video_height
 647         );
 648         if (!sink->texture)
 649             goto error_create_texture;
 650     }
 651     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 652         goto error_transfer_surface;
 653
 654     target  = gst_vaapi_texture_get_target(sink->texture);
 655     texture = gst_vaapi_texture_get_id(sink->texture);
 656     if (target != GL_TEXTURE_2D || !texture)
 657         return FALSE;
 658
 659     if (sink->use_reflection)
 660         render_background(sink);
 661
 662     glEnable(target);
 663     glBindTexture(target, texture);
 664     {
 665         if (sink->use_reflection) {
 666             glPushMatrix();
 667             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 668             glTranslatef(50.0f, 0.0f, 0.0f);
 669         }
 670         render_frame(sink);
 671         if (sink->use_reflection) {
 672             glPushMatrix();
 673             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 674             render_reflection(sink);
 675             glPopMatrix();
 676             glPopMatrix();
 677         }
 678     }
 679     glBindTexture(target, 0);
 680     glDisable(target);
 681     gst_vaapi_window_glx_swap_buffers(window);
 682     return TRUE;
 683
 684     /* ERRORS */
 685 error_create_texture:
 686     {
 687         GST_DEBUG("could not create VA/GLX texture");
 688         return FALSE;
 689     }
 690 error_transfer_surface:
 691     {
 692         GST_DEBUG("could not transfer VA surface to texture");
 693         return FALSE;
 694     }
 695 }
 696 #endif
 697
 698 static inline gboolean
 699 gst_vaapisink_show_frame_x11(
 700     GstVaapiSink    *sink,
 701     GstVaapiSurface *surface,
 702     guint            flags
 703 )
 704 {
 705     if (!gst_vaapi_window_put_surface(sink->window, surface,
 706                                       NULL, &sink->display_rect, flags)) {
 707         GST_DEBUG("could not render VA surface");
 708         return FALSE;
 709     }
 710     return TRUE;
 711 }
 712
 713 static GstFlowReturn
 714 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 715 {
 716     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 717     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 718     GstVaapiSurface *surface;
 719     guint flags;
 720     gboolean success;
 721
 722     if (!sink->window)
 723         return GST_FLOW_UNEXPECTED;
 724
 725     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 726     if (!surface)
 727         return GST_FLOW_UNEXPECTED;
 728
 729     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 730               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 731
 732     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 733
 734 #if USE_VAAPISINK_GLX
 735     if (sink->use_glx)
 736         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 737     else
 738 #endif
 739         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 740     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 741 }
 742
 743 static void
 744 gst_vaapisink_finalize(GObject *object)
 745 {
 746     gst_vaapisink_destroy(GST_VAAPISINK(object));
 747
 748     G_OBJECT_CLASS(parent_class)->finalize(object);
 749 }
 750
 751 static void
 752 gst_vaapisink_set_property(
 753     GObject      *object,
 754     guint         prop_id,
 755     const GValue *value,
 756     GParamSpec   *pspec
 757 )
 758 {
 759     GstVaapiSink * const sink = GST_VAAPISINK(object);
 760
 761     switch (prop_id) {
 762     case PROP_USE_GLX:
 763         sink->use_glx = g_value_get_boolean(value);
 764         break;
 765     case PROP_DISPLAY:
 766         g_free(sink->display_name);
 767         sink->display_name = g_strdup(g_value_get_string(value));
 768         break;
 769     case PROP_FULLSCREEN:
 770         sink->fullscreen = g_value_get_boolean(value);
 771         break;
 772     case PROP_SYNCHRONOUS:
 773         sink->synchronous = g_value_get_boolean(value);
 774         break;
 775     case PROP_USE_REFLECTION:
 776         sink->use_reflection = g_value_get_boolean(value);
 777         break;
 778     default:
 779         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 780         break;
 781     }
 782 }
 783
 784 static void
 785 gst_vaapisink_get_property(
 786     GObject    *object,
 787     guint       prop_id,
 788     GValue     *value,
 789     GParamSpec *pspec
 790 )
 791 {
 792     GstVaapiSink * const sink = GST_VAAPISINK(object);
 793
 794     switch (prop_id) {
 795     case PROP_USE_GLX:
 796         g_value_set_boolean(value, sink->use_glx);
 797         break;
 798     case PROP_DISPLAY:
 799         g_value_set_string(value, sink->display_name);
 800         break;
 801     case PROP_FULLSCREEN:
 802         g_value_set_boolean(value, sink->fullscreen);
 803         break;
 804     case PROP_SYNCHRONOUS:
 805         g_value_set_boolean(value, sink->synchronous);
 806         break;
 807     case PROP_USE_REFLECTION:
 808         g_value_set_boolean(value, sink->use_reflection);
 809         break;
 810     default:
 811         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 812         break;
 813     }
 814 }
 815
 816 static void
 817 gst_vaapisink_base_init(gpointer klass)
 818 {
 819     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 820
 821     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 822
 823     gst_element_class_add_pad_template(
 824         element_class,
 825         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 826     );
 827 }
 828
 829 static void
 830 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 831 {
 832     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 833     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 834
 835     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 836                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 837
 838     object_class->finalize       = gst_vaapisink_finalize;
 839     object_class->set_property   = gst_vaapisink_set_property;
 840     object_class->get_property   = gst_vaapisink_get_property;
 841
 842     basesink_class->start        = gst_vaapisink_start;
 843     basesink_class->stop         = gst_vaapisink_stop;
 844     basesink_class->set_caps     = gst_vaapisink_set_caps;
 845     basesink_class->buffer_alloc = gst_vaapisink_buffer_alloc;
 846     basesink_class->preroll      = gst_vaapisink_show_frame;
 847     basesink_class->render       = gst_vaapisink_show_frame;
 848
 849 #if USE_VAAPISINK_GLX
 850     g_object_class_install_property
 851         (object_class,
 852          PROP_USE_GLX,
 853          g_param_spec_boolean("use-glx",
 854                               "GLX rendering",
 855                               "Enables GLX rendering",
 856                               TRUE,
 857                               G_PARAM_READWRITE));
 858
 859     g_object_class_install_property
 860         (object_class,
 861          PROP_USE_REFLECTION,
 862          g_param_spec_boolean("use-reflection",
 863                               "Reflection effect",
 864                               "Enables OpenGL reflection effect",
 865                               FALSE,
 866                               G_PARAM_READWRITE));
 867 #endif
 868
 869     g_object_class_install_property
 870         (object_class,
 871          PROP_DISPLAY,
 872          g_param_spec_string("display",
 873                              "X11 display name",
 874                              "X11 display name",
 875                              "",
 876                              G_PARAM_READWRITE));
 877
 878     g_object_class_install_property
 879         (object_class,
 880          PROP_FULLSCREEN,
 881          g_param_spec_boolean("fullscreen",
 882                               "Fullscreen",
 883                               "Requests window in fullscreen state",
 884                               FALSE,
 885                               G_PARAM_READWRITE));
 886
 887     /**
 888      * GstVaapiSink:synchronous:
 889      *
 890      * When enabled, runs the X display in synchronous mode. Note that
 891      * this is used only for debugging.
 892      */
 893     g_object_class_install_property
 894         (object_class,
 895          PROP_SYNCHRONOUS,
 896          g_param_spec_boolean("synchronous",
 897                               "Synchronous mode",
 898                               "Toggles X display synchronous mode",
 899                               FALSE,
 900                               G_PARAM_READWRITE));
 901 }
 902
 903 static void
 904 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 905 {
 906     sink->display_name   = NULL;
 907     sink->display        = NULL;
 908     sink->window         = NULL;
 909     sink->window_width   = 0;
 910     sink->window_height  = 0;
 911     sink->texture        = NULL;
 912     sink->video_width    = 0;
 913     sink->video_height   = 0;
 914     sink->video_par_n    = 1;
 915     sink->video_par_d    = 1;
 916     sink->foreign_window = FALSE;
 917     sink->fullscreen     = FALSE;
 918     sink->synchronous    = FALSE;
 919     sink->use_glx        = USE_VAAPISINK_GLX;
 920     sink->use_reflection = FALSE;
 921 }
 922
 923 GstVaapiDisplay *
 924 gst_vaapisink_get_display(GstVaapiSink *sink)
 925 {
 926     if (!gst_vaapisink_ensure_display(sink))
 927         return NULL;
 928     return sink->display;
 929 }