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
 245 /* Checks whether a ConfigureNotify event is in the queue */
 246 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 247 struct _ConfigureNotifyEventPendingArgs {
 248     Window      window;
 249     guint       width;
 250     guint       height;
 251     gboolean    match;
 252 };
 253
 254 static Bool
 255 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 256 {
 257     ConfigureNotifyEventPendingArgs * const args =
 258         (ConfigureNotifyEventPendingArgs *)arg;
 259
 260     if (xev->type == ConfigureNotify &&
 261         xev->xconfigure.window == args->window &&
 262         xev->xconfigure.width  == args->width  &&
 263         xev->xconfigure.height == args->height)
 264         args->match = TRUE;
 265
 266     /* XXX: this is a hack to traverse the whole queue because we
 267        can't use XPeekIfEvent() since it could block */
 268     return False;
 269 }
 270
 271 static gboolean
 272 configure_notify_event_pending(
 273     GstVaapiSink *sink,
 274     Window        window,
 275     guint         width,
 276     guint         height
 277 )
 278 {
 279     ConfigureNotifyEventPendingArgs args;
 280     XEvent xev;
 281
 282     args.window = window;
 283     args.width  = width;
 284     args.height = height;
 285     args.match  = FALSE;
 286
 287     /* XXX: don't use XPeekIfEvent() because it might block */
 288     XCheckIfEvent(
 289         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 290         &xev,
 291         configure_notify_event_pending_cb, (XPointer)&args
 292     );
 293     return args.match;
 294 }
 295
 296 static gboolean
 297 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 298 {
 299     GstVaapiRectangle * const display_rect = &sink->display_rect;
 300     guint num, den, display_par_n, display_par_d;
 301     gboolean success;
 302
 303     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 304
 305     gst_vaapi_display_get_pixel_aspect_ratio(
 306         sink->display,
 307         &display_par_n, &display_par_d
 308     );
 309     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 310               display_par_n, display_par_d);
 311
 312     success = gst_video_calculate_display_ratio(
 313         &num, &den,
 314         sink->video_width, sink->video_height,
 315         sink->video_par_n, sink->video_par_d,
 316         display_par_n, display_par_d
 317     );
 318     if (!success)
 319         return FALSE;
 320     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 321               sink->video_width, sink->video_height, num, den);
 322
 323     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 324     if (display_rect->width <= width) {
 325         GST_DEBUG("keeping window height");
 326         display_rect->height = height;
 327     }
 328     else {
 329         GST_DEBUG("keeping window width");
 330         display_rect->width  = width;
 331         display_rect->height =
 332             gst_util_uint64_scale_int(width, den, num);
 333     }
 334     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 335
 336     g_assert(display_rect->width  <= width);
 337     g_assert(display_rect->height <= height);
 338
 339     display_rect->x = (width  - display_rect->width)  / 2;
 340     display_rect->y = (height - display_rect->height) / 2;
 341
 342     GST_DEBUG("render rect (%d,%d):%ux%u",
 343               display_rect->x, display_rect->y,
 344               display_rect->width, display_rect->height);
 345     return TRUE;
 346 }
 347
 348 static inline gboolean
 349 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 350 {
 351     GstVaapiDisplay * const display = sink->display;
 352
 353     if (!sink->window) {
 354 #if USE_VAAPISINK_GLX
 355         if (sink->use_glx)
 356             sink->window = gst_vaapi_window_glx_new(display, width, height);
 357         else
 358 #endif
 359             sink->window = gst_vaapi_window_x11_new(display, width, height);
 360         if (sink->window)
 361             gst_x_overlay_got_xwindow_id(
 362                 GST_X_OVERLAY(sink),
 363                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 364             );
 365     }
 366     return sink->window != NULL;
 367 }
 368
 369 static gboolean
 370 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 371 {
 372     Window rootwin;
 373     unsigned int width, height, border_width, depth;
 374     int x, y;
 375     XID xid = window_id;
 376
 377     if (!gst_vaapi_ensure_display(sink, &sink->display))
 378         return FALSE;
 379
 380     gst_vaapi_display_lock(sink->display);
 381     XGetGeometry(
 382         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 383         xid,
 384         &rootwin,
 385         &x, &y, &width, &height, &border_width, &depth
 386     );
 387     gst_vaapi_display_unlock(sink->display);
 388
 389     if ((width != sink->window_width || height != sink->window_height) &&
 390         !configure_notify_event_pending(sink, xid, width, height)) {
 391         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 392             return FALSE;
 393         sink->window_width  = width;
 394         sink->window_height = height;
 395     }
 396
 397     if (sink->window &&
 398         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 399         return TRUE;
 400
 401     if (sink->window) {
 402         g_object_unref(sink->window);
 403         sink->window = NULL;
 404     }
 405
 406 #if USE_VAAPISINK_GLX
 407     if (sink->use_glx)
 408         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 409     else
 410 #endif
 411         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 412     return sink->window != NULL;
 413 }
 414
 415 static gboolean
 416 gst_vaapisink_start(GstBaseSink *base_sink)
 417 {
 418     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 419
 420     return gst_vaapi_ensure_display(sink, &sink->display);
 421 }
 422
 423 static gboolean
 424 gst_vaapisink_stop(GstBaseSink *base_sink)
 425 {
 426     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 427
 428     if (sink->window) {
 429         g_object_unref(sink->window);
 430         sink->window = NULL;
 431     }
 432
 433     if (sink->display) {
 434         g_object_unref(sink->display);
 435         sink->display = NULL;
 436     }
 437     return TRUE;
 438 }
 439
 440 static gboolean
 441 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 442 {
 443     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 444     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 445     guint win_width, win_height, display_width, display_height;
 446     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 447
 448     if (!structure)
 449         return FALSE;
 450     if (!gst_structure_get_int(structure, "width",  &video_width))
 451         return FALSE;
 452     if (!gst_structure_get_int(structure, "height", &video_height))
 453         return FALSE;
 454     sink->video_width  = video_width;
 455     sink->video_height = video_height;
 456
 457     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 458     sink->video_par_n  = video_par_n;
 459     sink->video_par_d  = video_par_d;
 460     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 461
 462     if (!gst_vaapi_ensure_display(sink, &sink->display))
 463         return FALSE;
 464
 465     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 466     if (sink->fullscreen ||
 467         video_width > display_width || video_height > display_height) {
 468         win_width  = display_width;
 469         win_height = display_height;
 470     }
 471     else {
 472         win_width  = video_width;
 473         win_height = video_height;
 474     }
 475
 476     if (sink->window)
 477         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 478     else {
 479         gst_vaapi_display_lock(sink->display);
 480         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 481         gst_vaapi_display_unlock(sink->display);
 482         if (sink->window)
 483             return TRUE;
 484         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 485             return FALSE;
 486         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 487         gst_vaapi_window_show(sink->window);
 488         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 489     }
 490     sink->window_width  = win_width;
 491     sink->window_height = win_height;
 492     GST_DEBUG("window size %ux%u", win_width, win_height);
 493
 494     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 495 }
 496
 497 #if USE_VAAPISINK_GLX
 498 static void
 499 render_background(GstVaapiSink *sink)
 500 {
 501     /* Original code from Mirco Muller (MacSlow):
 502        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 503     GLfloat fStartX = 0.0f;
 504     GLfloat fStartY = 0.0f;
 505     GLfloat fWidth  = (GLfloat)sink->window_width;
 506     GLfloat fHeight = (GLfloat)sink->window_height;
 507
 508     glClear(GL_COLOR_BUFFER_BIT);
 509     glBegin(GL_QUADS);
 510     {
 511         /* top third, darker grey to white */
 512         glColor3f(0.85f, 0.85f, 0.85f);
 513         glVertex3f(fStartX, fStartY, 0.0f);
 514         glColor3f(0.85f, 0.85f, 0.85f);
 515         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 516         glColor3f(1.0f, 1.0f, 1.0f);
 517         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 518         glColor3f(1.0f, 1.0f, 1.0f);
 519         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 520
 521         /* middle third, just plain white */
 522         glColor3f(1.0f, 1.0f, 1.0f);
 523         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 524         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 525         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 526         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 527
 528         /* bottom third, white to lighter grey */
 529         glColor3f(1.0f, 1.0f, 1.0f);
 530         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 531         glColor3f(1.0f, 1.0f, 1.0f);
 532         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 533         glColor3f(0.62f, 0.66f, 0.69f);
 534         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 535         glColor3f(0.62f, 0.66f, 0.69f);
 536         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 537     }
 538     glEnd();
 539 }
 540
 541 static void
 542 render_frame(GstVaapiSink *sink)
 543 {
 544     const guint x1 = sink->display_rect.x;
 545     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 546     const guint y1 = sink->display_rect.y;
 547     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 548
 549     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 550     glBegin(GL_QUADS);
 551     {
 552         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 553         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 554         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 555         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 556     }
 557     glEnd();
 558 }
 559
 560 static void
 561 render_reflection(GstVaapiSink *sink)
 562 {
 563     const guint x1 = sink->display_rect.x;
 564     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 565     const guint y1 = sink->display_rect.y;
 566     const guint rh = sink->display_rect.height / 5;
 567     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 568
 569     glBegin(GL_QUADS);
 570     {
 571         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 572         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 573         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 574
 575         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 576         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 577         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 578     }
 579     glEnd();
 580 }
 581
 582 static gboolean
 583 gst_vaapisink_show_frame_glx(
 584     GstVaapiSink    *sink,
 585     GstVaapiSurface *surface,
 586     guint            flags
 587 )
 588 {
 589     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 590     GLenum target;
 591     GLuint texture;
 592
 593     gst_vaapi_window_glx_make_current(window);
 594     if (!sink->texture) {
 595         sink->texture = gst_vaapi_texture_new(
 596             sink->display,
 597             GL_TEXTURE_2D,
 598             GL_BGRA,
 599             sink->video_width,
 600             sink->video_height
 601         );
 602         if (!sink->texture)
 603             goto error_create_texture;
 604     }
 605     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 606         goto error_transfer_surface;
 607
 608     target  = gst_vaapi_texture_get_target(sink->texture);
 609     texture = gst_vaapi_texture_get_id(sink->texture);
 610     if (target != GL_TEXTURE_2D || !texture)
 611         return FALSE;
 612
 613     if (sink->use_reflection)
 614         render_background(sink);
 615
 616     glEnable(target);
 617     glBindTexture(target, texture);
 618     {
 619         if (sink->use_reflection) {
 620             glPushMatrix();
 621             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 622             glTranslatef(50.0f, 0.0f, 0.0f);
 623         }
 624         render_frame(sink);
 625         if (sink->use_reflection) {
 626             glPushMatrix();
 627             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 628             render_reflection(sink);
 629             glPopMatrix();
 630             glPopMatrix();
 631         }
 632     }
 633     glBindTexture(target, 0);
 634     glDisable(target);
 635     gst_vaapi_window_glx_swap_buffers(window);
 636     return TRUE;
 637
 638     /* ERRORS */
 639 error_create_texture:
 640     {
 641         GST_DEBUG("could not create VA/GLX texture");
 642         return FALSE;
 643     }
 644 error_transfer_surface:
 645     {
 646         GST_DEBUG("could not transfer VA surface to texture");
 647         return FALSE;
 648     }
 649 }
 650 #endif
 651
 652 static inline gboolean
 653 gst_vaapisink_show_frame_x11(
 654     GstVaapiSink    *sink,
 655     GstVaapiSurface *surface,
 656     guint            flags
 657 )
 658 {
 659     if (!gst_vaapi_window_put_surface(sink->window, surface,
 660                 NULL, &sink->display_rect, flags)) {
 661         GST_DEBUG("could not render VA surface");
 662         return FALSE;
 663     }
 664     return TRUE;
 665 }
 666
 667 static GstFlowReturn
 668 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 669 {
 670     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 671     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 672     GstVaapiSurface *surface;
 673     guint flags;
 674     gboolean success;
 675     GstVideoOverlayComposition * const composition =
 676         gst_video_buffer_get_overlay_composition(buffer);
 677
 678     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 679       if (sink->display)
 680         g_object_unref (sink->display);
 681       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 682     }
 683
 684     if (!sink->window)
 685         return GST_FLOW_UNEXPECTED;
 686
 687     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 688     if (!surface)
 689         return GST_FLOW_UNEXPECTED;
 690
 691     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 692               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 693
 694     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 695
 696     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 697              composition, TRUE))
 698         GST_WARNING("could not update subtitles");
 699
 700 #if USE_VAAPISINK_GLX
 701     if (sink->use_glx)
 702         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 703     else
 704 #endif
 705         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 706     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 707 }
 708
 709 static gboolean
 710 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 711 {
 712     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 713     GST_DEBUG ("sharing display %p", sink->display);
 714     return gst_vaapi_reply_to_query (query, sink->display);
 715 }
 716
 717 static void
 718 gst_vaapisink_finalize(GObject *object)
 719 {
 720     gst_vaapisink_destroy(GST_VAAPISINK(object));
 721
 722     G_OBJECT_CLASS(parent_class)->finalize(object);
 723 }
 724
 725 static void
 726 gst_vaapisink_set_property(
 727     GObject      *object,
 728     guint         prop_id,
 729     const GValue *value,
 730     GParamSpec   *pspec
 731 )
 732 {
 733     GstVaapiSink * const sink = GST_VAAPISINK(object);
 734
 735     switch (prop_id) {
 736     case PROP_USE_GLX:
 737         sink->use_glx = g_value_get_boolean(value);
 738         break;
 739     case PROP_FULLSCREEN:
 740         sink->fullscreen = g_value_get_boolean(value);
 741         break;
 742     case PROP_SYNCHRONOUS:
 743         sink->synchronous = g_value_get_boolean(value);
 744         break;
 745     case PROP_USE_REFLECTION:
 746         sink->use_reflection = g_value_get_boolean(value);
 747         break;
 748     default:
 749         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 750         break;
 751     }
 752 }
 753
 754 static void
 755 gst_vaapisink_get_property(
 756     GObject    *object,
 757     guint       prop_id,
 758     GValue     *value,
 759     GParamSpec *pspec
 760 )
 761 {
 762     GstVaapiSink * const sink = GST_VAAPISINK(object);
 763
 764     switch (prop_id) {
 765     case PROP_USE_GLX:
 766         g_value_set_boolean(value, sink->use_glx);
 767         break;
 768     case PROP_FULLSCREEN:
 769         g_value_set_boolean(value, sink->fullscreen);
 770         break;
 771     case PROP_SYNCHRONOUS:
 772         g_value_set_boolean(value, sink->synchronous);
 773         break;
 774     case PROP_USE_REFLECTION:
 775         g_value_set_boolean(value, sink->use_reflection);
 776         break;
 777     default:
 778         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 779         break;
 780     }
 781 }
 782
 783 static void
 784 gst_vaapisink_base_init(gpointer klass)
 785 {
 786     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 787
 788     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 789
 790     gst_element_class_add_pad_template(
 791         element_class,
 792         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 793     );
 794 }
 795
 796 static void
 797 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 798 {
 799     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 800     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 801
 802     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 803                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 804
 805     object_class->finalize       = gst_vaapisink_finalize;
 806     object_class->set_property   = gst_vaapisink_set_property;
 807     object_class->get_property   = gst_vaapisink_get_property;
 808
 809     basesink_class->start        = gst_vaapisink_start;
 810     basesink_class->stop         = gst_vaapisink_stop;
 811     basesink_class->set_caps     = gst_vaapisink_set_caps;
 812     basesink_class->preroll      = gst_vaapisink_show_frame;
 813     basesink_class->render       = gst_vaapisink_show_frame;
 814     basesink_class->query        = gst_vaapisink_query;
 815
 816 #if USE_VAAPISINK_GLX
 817     g_object_class_install_property
 818         (object_class,
 819          PROP_USE_GLX,
 820          g_param_spec_boolean("use-glx",
 821                               "GLX rendering",
 822                               "Enables GLX rendering",
 823                               TRUE,
 824                               G_PARAM_READWRITE));
 825
 826     g_object_class_install_property
 827         (object_class,
 828          PROP_USE_REFLECTION,
 829          g_param_spec_boolean("use-reflection",
 830                               "Reflection effect",
 831                               "Enables OpenGL reflection effect",
 832                               FALSE,
 833                               G_PARAM_READWRITE));
 834 #endif
 835
 836     g_object_class_install_property
 837         (object_class,
 838          PROP_FULLSCREEN,
 839          g_param_spec_boolean("fullscreen",
 840                               "Fullscreen",
 841                               "Requests window in fullscreen state",
 842                               FALSE,
 843                               G_PARAM_READWRITE));
 844
 845     /**
 846      * GstVaapiSink:synchronous:
 847      *
 848      * When enabled, runs the X display in synchronous mode. Note that
 849      * this is used only for debugging.
 850      */
 851     g_object_class_install_property
 852         (object_class,
 853          PROP_SYNCHRONOUS,
 854          g_param_spec_boolean("synchronous",
 855                               "Synchronous mode",
 856                               "Toggles X display synchronous mode",
 857                               FALSE,
 858                               G_PARAM_READWRITE));
 859 }
 860
 861 static void
 862 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 863 {
 864     sink->display        = NULL;
 865     sink->window         = NULL;
 866     sink->window_width   = 0;
 867     sink->window_height  = 0;
 868     sink->texture        = NULL;
 869     sink->video_width    = 0;
 870     sink->video_height   = 0;
 871     sink->video_par_n    = 1;
 872     sink->video_par_d    = 1;
 873     sink->foreign_window = FALSE;
 874     sink->fullscreen     = FALSE;
 875     sink->synchronous    = FALSE;
 876     sink->use_glx        = USE_VAAPISINK_GLX;
 877     sink->use_reflection = FALSE;
 878 }