gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  gstreamer-vaapi (C) 2010-2011 Splitted-Desktop Systems
   5  *  Copyright (C) 2011 Intel Corporation
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Lesser General Public License
   9  *  as published by the Free Software Foundation; either version 2.1
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Lesser General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Lesser General Public
  18  *  License along with this library; if not, write to the Free
  19  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  *  Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * SECTION:gstvaapisink
  25  * @short_description: A VA-API based videosink
  26  *
  27  * vaapisink renders video frames to a drawable (X #Window) on a local
  28  * display using the Video Acceleration (VA) API. The element will
  29  * create its own internal window and render into it.
  30  */
  31
  32 #include "config.h"
  33 #include <gst/gst.h>
  34 #include <gst/gstutils_version.h>
  35 #include <gst/video/video.h>
  36 #include <gst/video/videocontext.h>
  37 #include <gst/vaapi/gstvaapivideobuffer.h>
  38 #include <gst/vaapi/gstvaapivideosink.h>
  39 #include <gst/vaapi/gstvaapidisplay_x11.h>
  40 #include <gst/vaapi/gstvaapiwindow_x11.h>
  41 #if USE_VAAPISINK_GLX
  42 #include <gst/vaapi/gstvaapidisplay_glx.h>
  43 #include <gst/vaapi/gstvaapiwindow_glx.h>
  44 #endif
  45
  46 /* Supported interfaces */
  47 #include <gst/interfaces/xoverlay.h>
  48
  49 #include "gstvaapisink.h"
  50 #include "gstvaapipluginutil.h"
  51
  52 #define HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE \
  53     GST_PLUGINS_BASE_CHECK_VERSION(0,10,31)
  54
  55 #define GST_PLUGIN_NAME "vaapisink"
  56 #define GST_PLUGIN_DESC "A VA-API based videosink"
  57
  58 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  59 #define GST_CAT_DEFAULT gst_debug_vaapisink
  60
  61 /* ElementFactory information */
  62 static const GstElementDetails gst_vaapisink_details =
  63     GST_ELEMENT_DETAILS(
  64         "VA-API sink",
  65         "Sink/Video",
  66         GST_PLUGIN_DESC,
  67         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  68
  69 /* Default template */
  70 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  71     GST_STATIC_PAD_TEMPLATE(
  72         "sink",
  73         GST_PAD_SINK,
  74         GST_PAD_ALWAYS,
  75         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  76
  77 static void gst_vaapisink_iface_init(GType type);
  78
  79 GST_BOILERPLATE_FULL(
  80     GstVaapiSink,
  81     gst_vaapisink,
  82     GstVideoSink,
  83     GST_TYPE_VIDEO_SINK,
  84     gst_vaapisink_iface_init);
  85
  86 enum {
  87     PROP_0,
  88
  89     PROP_USE_GLX,
  90     PROP_FULLSCREEN,
  91     PROP_SYNCHRONOUS,
  92     PROP_USE_REFLECTION
  93 };
  94
  95 /* GstImplementsInterface interface */
  96
  97 static gboolean
  98 gst_vaapisink_implements_interface_supported(
  99     GstImplementsInterface *iface,
 100     GType                   type
 101 )
 102 {
 103     return (type == GST_TYPE_VIDEO_CONTEXT ||
 104             type == GST_TYPE_X_OVERLAY);
 105 }
 106
 107 static void
 108 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 109 {
 110     iface->supported = gst_vaapisink_implements_interface_supported;
 111 }
 112
 113 /* GstVaapiVideoSink interface */
 114
 115 static void
 116 gst_vaapisink_set_video_context(GstVideoContext *context, const gchar *type,
 117     const GValue *value)
 118 {
 119   GstVaapiSink *sink = GST_VAAPISINK (context);
 120   gst_vaapi_set_display (type, value, &sink->display);
 121 }
 122
 123 static void
 124 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface)
 125 {
 126     iface->set_context = gst_vaapisink_set_video_context;
 127 }
 128
 129 /* GstXOverlay interface */
 130
 131 static gboolean
 132 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 133
 134 static GstFlowReturn
 135 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 136
 137 static inline void
 138 _gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, guintptr window_id)
 139 {
 140     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 141
 142     /* Disable GLX rendering when vaapisink is using a foreign X
 143        window. It's pretty much useless */
 144     sink->use_glx = FALSE;
 145
 146     sink->foreign_window = TRUE;
 147     gst_vaapisink_ensure_window_xid(sink, window_id);
 148 }
 149
 150 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 151 static void
 152 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window_id)
 153 {
 154     _gst_vaapisink_xoverlay_set_xid(overlay, window_id);
 155 }
 156 #else
 157 static void
 158 gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, XID xid)
 159 {
 160     _gst_vaapisink_xoverlay_set_xid(overlay, xid);
 161 }
 162 #endif
 163
 164 static void
 165 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 166 {
 167     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 168     GstBuffer *buffer;
 169
 170     buffer = gst_base_sink_get_last_buffer(base_sink);
 171     if (buffer) {
 172         gst_vaapisink_show_frame(base_sink, buffer);
 173         gst_buffer_unref(buffer);
 174     }
 175 }
 176
 177 static void
 178 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 179 {
 180 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 181     iface->set_window_handle = gst_vaapisink_xoverlay_set_window_handle;
 182 #else
 183     iface->set_xwindow_id    = gst_vaapisink_xoverlay_set_xid;
 184 #endif
 185     iface->expose            = gst_vaapisink_xoverlay_expose;
 186 }
 187
 188 static void
 189 gst_vaapisink_iface_init(GType type)
 190 {
 191     const GType g_define_type_id = type;
 192
 193     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
 194                           gst_vaapisink_implements_iface_init);
 195     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_CONTEXT,
 196                           gst_vaapisink_video_context_iface_init);
 197     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
 198                           gst_vaapisink_xoverlay_iface_init);
 199 }
 200
 201 static void
 202 gst_vaapisink_destroy(GstVaapiSink *sink)
 203 {
 204     if (sink->display) {
 205         g_object_unref(sink->display);
 206         sink->display = NULL;
 207     }
 208 }
 209
 210 /* Checks whether a ConfigureNotify event is in the queue */
 211 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 212 struct _ConfigureNotifyEventPendingArgs {
 213     Window      window;
 214     guint       width;
 215     guint       height;
 216     gboolean    match;
 217 };
 218
 219 static Bool
 220 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 221 {
 222     ConfigureNotifyEventPendingArgs * const args =
 223         (ConfigureNotifyEventPendingArgs *)arg;
 224
 225     if (xev->type == ConfigureNotify &&
 226         xev->xconfigure.window == args->window &&
 227         xev->xconfigure.width  == args->width  &&
 228         xev->xconfigure.height == args->height)
 229         args->match = TRUE;
 230
 231     /* XXX: this is a hack to traverse the whole queue because we
 232        can't use XPeekIfEvent() since it could block */
 233     return False;
 234 }
 235
 236 static gboolean
 237 configure_notify_event_pending(
 238     GstVaapiSink *sink,
 239     Window        window,
 240     guint         width,
 241     guint         height
 242 )
 243 {
 244     ConfigureNotifyEventPendingArgs args;
 245     XEvent xev;
 246
 247     args.window = window;
 248     args.width  = width;
 249     args.height = height;
 250     args.match  = FALSE;
 251
 252     /* XXX: don't use XPeekIfEvent() because it might block */
 253     XCheckIfEvent(
 254         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 255         &xev,
 256         configure_notify_event_pending_cb, (XPointer)&args
 257     );
 258     return args.match;
 259 }
 260
 261 static gboolean
 262 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 263 {
 264     GstVaapiRectangle * const display_rect = &sink->display_rect;
 265     guint num, den, display_par_n, display_par_d;
 266     double display_ratio;
 267     gboolean success;
 268
 269     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 270
 271     gst_vaapi_display_get_pixel_aspect_ratio(
 272         sink->display,
 273         &display_par_n, &display_par_d
 274     );
 275     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 276               display_par_n, display_par_d);
 277
 278     success = gst_video_calculate_display_ratio(
 279         &num, &den,
 280         sink->video_width, sink->video_height,
 281         sink->video_par_n, sink->video_par_d,
 282         display_par_n, display_par_d
 283     );
 284     if (!success)
 285         return FALSE;
 286     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 287               sink->video_width, sink->video_height, num, den);
 288
 289     if ((sink->video_height % den) == 0) {
 290         GST_DEBUG("keeping video height");
 291         display_rect->width  =
 292             gst_util_uint64_scale_int(sink->video_height, num, den);
 293         display_rect->height = sink->video_height;
 294     }
 295     else if ((sink->video_width % num) == 0) {
 296         GST_DEBUG("keeping video width");
 297         display_rect->width  = sink->video_width;
 298         display_rect->height =
 299             gst_util_uint64_scale_int(sink->video_width, den, num);
 300     }
 301     else {
 302         GST_DEBUG("approximating while keeping video height");
 303         display_rect->width  =
 304             gst_util_uint64_scale_int(sink->video_height, num, den);
 305         display_rect->height = sink->video_height;
 306     }
 307     display_ratio = (gdouble)display_rect->width / display_rect->height;
 308     GST_DEBUG("scaling to %ux%u", display_rect->width, display_rect->height);
 309
 310     if (sink->fullscreen || sink->foreign_window ||
 311         display_rect->width > width || display_rect->height > height) {
 312         if (sink->video_width > sink->video_height) {
 313             display_rect->width  = width;
 314             display_rect->height = width / display_ratio;
 315         }
 316         else {
 317             display_rect->width  = height * display_ratio;
 318             display_rect->height = height;
 319         }
 320     }
 321
 322     if (sink->fullscreen) {
 323         display_rect->x  = (width  - display_rect->width)  / 2;
 324         display_rect->y  = (height - display_rect->height) / 2;
 325     }
 326     else {
 327         display_rect->x  = 0;
 328         display_rect->y  = 0;
 329     }
 330
 331     GST_DEBUG("render rect (%d,%d):%ux%u",
 332               display_rect->x, display_rect->y,
 333               display_rect->width, display_rect->height);
 334     return TRUE;
 335 }
 336
 337 static inline gboolean
 338 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 339 {
 340     GstVaapiDisplay * const display = sink->display;
 341
 342     if (!sink->window) {
 343 #if USE_VAAPISINK_GLX
 344         if (sink->use_glx)
 345             sink->window = gst_vaapi_window_glx_new(display, width, height);
 346         else
 347 #endif
 348             sink->window = gst_vaapi_window_x11_new(display, width, height);
 349         if (sink->window)
 350             gst_x_overlay_got_xwindow_id(
 351                 GST_X_OVERLAY(sink),
 352                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 353             );
 354     }
 355     return sink->window != NULL;
 356 }
 357
 358 static gboolean
 359 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 360 {
 361     Window rootwin;
 362     unsigned int width, height, border_width, depth;
 363     int x, y;
 364     XID xid = window_id;
 365
 366     if (!gst_vaapi_ensure_display(sink, &sink->display))
 367         return FALSE;
 368
 369     gst_vaapi_display_lock(sink->display);
 370     XGetGeometry(
 371         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 372         xid,
 373         &rootwin,
 374         &x, &y, &width, &height, &border_width, &depth
 375     );
 376     gst_vaapi_display_unlock(sink->display);
 377
 378     if ((width != sink->window_width || height != sink->window_height) &&
 379         !configure_notify_event_pending(sink, xid, width, height)) {
 380         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 381             return FALSE;
 382         sink->window_width  = width;
 383         sink->window_height = height;
 384     }
 385
 386     if (sink->window &&
 387         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 388         return TRUE;
 389
 390     if (sink->window) {
 391         g_object_unref(sink->window);
 392         sink->window = NULL;
 393     }
 394
 395 #if USE_VAAPISINK_GLX
 396     if (sink->use_glx)
 397         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 398     else
 399 #endif
 400         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 401     return sink->window != NULL;
 402 }
 403
 404 static gboolean
 405 gst_vaapisink_start(GstBaseSink *base_sink)
 406 {
 407     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 408
 409     return TRUE;
 410 }
 411
 412 static gboolean
 413 gst_vaapisink_stop(GstBaseSink *base_sink)
 414 {
 415     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 416
 417     if (sink->window) {
 418         g_object_unref(sink->window);
 419         sink->window = NULL;
 420     }
 421
 422     if (sink->display) {
 423         g_object_unref(sink->display);
 424         sink->display = NULL;
 425     }
 426     return TRUE;
 427 }
 428
 429 static gboolean
 430 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 431 {
 432     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 433     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 434     guint display_width, display_height, win_width, win_height;
 435     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 436
 437     if (!structure)
 438         return FALSE;
 439     if (!gst_structure_get_int(structure, "width",  &video_width))
 440         return FALSE;
 441     if (!gst_structure_get_int(structure, "height", &video_height))
 442         return FALSE;
 443     sink->video_width  = video_width;
 444     sink->video_height = video_height;
 445
 446     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 447     sink->video_par_n  = video_par_n;
 448     sink->video_par_d  = video_par_d;
 449     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 450
 451     if (!gst_vaapi_ensure_display(sink, &sink->display))
 452         return FALSE;
 453
 454     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 455     if (!gst_vaapisink_ensure_render_rect(sink, display_width, display_height))
 456         return FALSE;
 457
 458     if (sink->fullscreen) {
 459         win_width  = display_width;
 460         win_height = display_height;
 461     }
 462     else {
 463         win_width  = sink->display_rect.width;
 464         win_height = sink->display_rect.height;
 465     }
 466
 467     if (sink->window)
 468         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 469     else {
 470         gst_vaapi_display_lock(sink->display);
 471         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 472         gst_vaapi_display_unlock(sink->display);
 473         if (sink->window)
 474             return TRUE;
 475         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 476             return FALSE;
 477         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 478         gst_vaapi_window_show(sink->window);
 479     }
 480     sink->window_width  = win_width;
 481     sink->window_height = win_height;
 482     return TRUE;
 483 }
 484
 485 static GstFlowReturn
 486 gst_vaapisink_buffer_alloc(
 487     GstBaseSink *base_sink,
 488     guint64      offset,
 489     guint        size,
 490     GstCaps     *caps,
 491     GstBuffer  **pout_buffer
 492 )
 493 {
 494     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 495     GstStructure *structure;
 496     GstBuffer *buffer;
 497
 498     if (!gst_vaapi_ensure_display(sink, &sink->display))
 499         goto error_ensure_display;
 500
 501     structure = gst_caps_get_structure(caps, 0);
 502     if (!gst_structure_has_name(structure, "video/x-vaapi-surface"))
 503         goto error_invalid_caps;
 504
 505     buffer = gst_vaapi_video_buffer_new(sink->display);
 506     if (!buffer)
 507         goto error_create_buffer;
 508
 509     gst_buffer_set_caps(buffer, caps);
 510     *pout_buffer = buffer;
 511     return GST_FLOW_OK;
 512
 513     /* ERRORS */
 514 error_ensure_display:
 515     {
 516         GST_ERROR("failed to ensure display");
 517         return GST_FLOW_UNEXPECTED;
 518     }
 519 error_invalid_caps:
 520     {
 521         GST_ERROR("failed to validate input caps");
 522         return GST_FLOW_UNEXPECTED;
 523     }
 524 error_create_buffer:
 525     {
 526         GST_ERROR("failed to create video buffer");
 527         return GST_FLOW_UNEXPECTED;
 528     }
 529 }
 530
 531 #if USE_VAAPISINK_GLX
 532 static void
 533 render_background(GstVaapiSink *sink)
 534 {
 535     /* Original code from Mirco Muller (MacSlow):
 536        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 537     GLfloat fStartX = 0.0f;
 538     GLfloat fStartY = 0.0f;
 539     GLfloat fWidth  = (GLfloat)sink->window_width;
 540     GLfloat fHeight = (GLfloat)sink->window_height;
 541
 542     glClear(GL_COLOR_BUFFER_BIT);
 543     glBegin(GL_QUADS);
 544     {
 545         /* top third, darker grey to white */
 546         glColor3f(0.85f, 0.85f, 0.85f);
 547         glVertex3f(fStartX, fStartY, 0.0f);
 548         glColor3f(0.85f, 0.85f, 0.85f);
 549         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 550         glColor3f(1.0f, 1.0f, 1.0f);
 551         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 552         glColor3f(1.0f, 1.0f, 1.0f);
 553         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 554
 555         /* middle third, just plain white */
 556         glColor3f(1.0f, 1.0f, 1.0f);
 557         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 558         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 559         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 560         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 561
 562         /* bottom third, white to lighter grey */
 563         glColor3f(1.0f, 1.0f, 1.0f);
 564         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 565         glColor3f(1.0f, 1.0f, 1.0f);
 566         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 567         glColor3f(0.62f, 0.66f, 0.69f);
 568         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 569         glColor3f(0.62f, 0.66f, 0.69f);
 570         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 571     }
 572     glEnd();
 573 }
 574
 575 static void
 576 render_frame(GstVaapiSink *sink)
 577 {
 578     const guint x1 = sink->display_rect.x;
 579     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 580     const guint y1 = sink->display_rect.y;
 581     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 582
 583     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 584     glBegin(GL_QUADS);
 585     {
 586         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 587         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 588         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 589         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 590     }
 591     glEnd();
 592 }
 593
 594 static void
 595 render_reflection(GstVaapiSink *sink)
 596 {
 597     const guint x1 = sink->display_rect.x;
 598     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 599     const guint y1 = sink->display_rect.y;
 600     const guint rh = sink->display_rect.height / 5;
 601     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 602
 603     glBegin(GL_QUADS);
 604     {
 605         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 606         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 607         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 608
 609         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 610         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 611         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 612     }
 613     glEnd();
 614 }
 615
 616 static gboolean
 617 gst_vaapisink_show_frame_glx(
 618     GstVaapiSink    *sink,
 619     GstVaapiSurface *surface,
 620     guint            flags
 621 )
 622 {
 623     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 624     GLenum target;
 625     GLuint texture;
 626
 627     gst_vaapi_window_glx_make_current(window);
 628     if (!sink->texture) {
 629         sink->texture = gst_vaapi_texture_new(
 630             sink->display,
 631             GL_TEXTURE_2D,
 632             GL_BGRA,
 633             sink->video_width,
 634             sink->video_height
 635         );
 636         if (!sink->texture)
 637             goto error_create_texture;
 638     }
 639     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 640         goto error_transfer_surface;
 641
 642     target  = gst_vaapi_texture_get_target(sink->texture);
 643     texture = gst_vaapi_texture_get_id(sink->texture);
 644     if (target != GL_TEXTURE_2D || !texture)
 645         return FALSE;
 646
 647     if (sink->use_reflection)
 648         render_background(sink);
 649
 650     glEnable(target);
 651     glBindTexture(target, texture);
 652     {
 653         if (sink->use_reflection) {
 654             glPushMatrix();
 655             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 656             glTranslatef(50.0f, 0.0f, 0.0f);
 657         }
 658         render_frame(sink);
 659         if (sink->use_reflection) {
 660             glPushMatrix();
 661             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 662             render_reflection(sink);
 663             glPopMatrix();
 664             glPopMatrix();
 665         }
 666     }
 667     glBindTexture(target, 0);
 668     glDisable(target);
 669     gst_vaapi_window_glx_swap_buffers(window);
 670     return TRUE;
 671
 672     /* ERRORS */
 673 error_create_texture:
 674     {
 675         GST_DEBUG("could not create VA/GLX texture");
 676         return FALSE;
 677     }
 678 error_transfer_surface:
 679     {
 680         GST_DEBUG("could not transfer VA surface to texture");
 681         return FALSE;
 682     }
 683 }
 684 #endif
 685
 686 static inline gboolean
 687 gst_vaapisink_show_frame_x11(
 688     GstVaapiSink    *sink,
 689     GstVaapiSurface *surface,
 690     guint            flags
 691 )
 692 {
 693     if (!gst_vaapi_window_put_surface(sink->window, surface,
 694                                       NULL, &sink->display_rect, flags)) {
 695         GST_DEBUG("could not render VA surface");
 696         return FALSE;
 697     }
 698     return TRUE;
 699 }
 700
 701 static GstFlowReturn
 702 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 703 {
 704     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 705     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 706     GstVaapiSurface *surface;
 707     guint flags;
 708     gboolean success;
 709
 710     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 711       if (sink->display)
 712         g_object_unref (sink->display);
 713       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 714     }
 715
 716     if (!sink->window)
 717         return GST_FLOW_UNEXPECTED;
 718
 719     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 720     if (!surface)
 721         return GST_FLOW_UNEXPECTED;
 722
 723     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 724               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 725
 726     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 727
 728 #if USE_VAAPISINK_GLX
 729     if (sink->use_glx)
 730         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 731     else
 732 #endif
 733         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 734     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 735 }
 736
 737 static gboolean
 738 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 739 {
 740     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 741     GST_DEBUG ("sharing display %p", sink->display);
 742     return gst_vaapi_reply_to_query (query, sink->display);
 743 }
 744
 745 static void
 746 gst_vaapisink_finalize(GObject *object)
 747 {
 748     gst_vaapisink_destroy(GST_VAAPISINK(object));
 749
 750     G_OBJECT_CLASS(parent_class)->finalize(object);
 751 }
 752
 753 static void
 754 gst_vaapisink_set_property(
 755     GObject      *object,
 756     guint         prop_id,
 757     const GValue *value,
 758     GParamSpec   *pspec
 759 )
 760 {
 761     GstVaapiSink * const sink = GST_VAAPISINK(object);
 762
 763     switch (prop_id) {
 764     case PROP_USE_GLX:
 765         sink->use_glx = g_value_get_boolean(value);
 766         break;
 767     case PROP_FULLSCREEN:
 768         sink->fullscreen = g_value_get_boolean(value);
 769         break;
 770     case PROP_SYNCHRONOUS:
 771         sink->synchronous = g_value_get_boolean(value);
 772         break;
 773     case PROP_USE_REFLECTION:
 774         sink->use_reflection = g_value_get_boolean(value);
 775         break;
 776     default:
 777         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 778         break;
 779     }
 780 }
 781
 782 static void
 783 gst_vaapisink_get_property(
 784     GObject    *object,
 785     guint       prop_id,
 786     GValue     *value,
 787     GParamSpec *pspec
 788 )
 789 {
 790     GstVaapiSink * const sink = GST_VAAPISINK(object);
 791
 792     switch (prop_id) {
 793     case PROP_USE_GLX:
 794         g_value_set_boolean(value, sink->use_glx);
 795         break;
 796     case PROP_FULLSCREEN:
 797         g_value_set_boolean(value, sink->fullscreen);
 798         break;
 799     case PROP_SYNCHRONOUS:
 800         g_value_set_boolean(value, sink->synchronous);
 801         break;
 802     case PROP_USE_REFLECTION:
 803         g_value_set_boolean(value, sink->use_reflection);
 804         break;
 805     default:
 806         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 807         break;
 808     }
 809 }
 810
 811 static void
 812 gst_vaapisink_base_init(gpointer klass)
 813 {
 814     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 815
 816     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 817
 818     gst_element_class_add_pad_template(
 819         element_class,
 820         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 821     );
 822 }
 823
 824 static void
 825 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 826 {
 827     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 828     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 829
 830     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 831                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 832
 833     object_class->finalize       = gst_vaapisink_finalize;
 834     object_class->set_property   = gst_vaapisink_set_property;
 835     object_class->get_property   = gst_vaapisink_get_property;
 836
 837     basesink_class->start        = gst_vaapisink_start;
 838     basesink_class->stop         = gst_vaapisink_stop;
 839     basesink_class->set_caps     = gst_vaapisink_set_caps;
 840     basesink_class->buffer_alloc = gst_vaapisink_buffer_alloc;
 841     basesink_class->preroll      = gst_vaapisink_show_frame;
 842     basesink_class->render       = gst_vaapisink_show_frame;
 843     basesink_class->query        = gst_vaapisink_query;
 844
 845 #if USE_VAAPISINK_GLX
 846     g_object_class_install_property
 847         (object_class,
 848          PROP_USE_GLX,
 849          g_param_spec_boolean("use-glx",
 850                               "GLX rendering",
 851                               "Enables GLX rendering",
 852                               TRUE,
 853                               G_PARAM_READWRITE));
 854
 855     g_object_class_install_property
 856         (object_class,
 857          PROP_USE_REFLECTION,
 858          g_param_spec_boolean("use-reflection",
 859                               "Reflection effect",
 860                               "Enables OpenGL reflection effect",
 861                               FALSE,
 862                               G_PARAM_READWRITE));
 863 #endif
 864
 865     g_object_class_install_property
 866         (object_class,
 867          PROP_FULLSCREEN,
 868          g_param_spec_boolean("fullscreen",
 869                               "Fullscreen",
 870                               "Requests window in fullscreen state",
 871                               FALSE,
 872                               G_PARAM_READWRITE));
 873
 874     /**
 875      * GstVaapiSink:synchronous:
 876      *
 877      * When enabled, runs the X display in synchronous mode. Note that
 878      * this is used only for debugging.
 879      */
 880     g_object_class_install_property
 881         (object_class,
 882          PROP_SYNCHRONOUS,
 883          g_param_spec_boolean("synchronous",
 884                               "Synchronous mode",
 885                               "Toggles X display synchronous mode",
 886                               FALSE,
 887                               G_PARAM_READWRITE));
 888 }
 889
 890 static void
 891 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 892 {
 893     sink->display        = NULL;
 894     sink->window         = NULL;
 895     sink->window_width   = 0;
 896     sink->window_height  = 0;
 897     sink->texture        = NULL;
 898     sink->video_width    = 0;
 899     sink->video_height   = 0;
 900     sink->video_par_n    = 1;
 901     sink->video_par_d    = 1;
 902     sink->foreign_window = FALSE;
 903     sink->fullscreen     = FALSE;
 904     sink->synchronous    = FALSE;
 905     sink->use_glx        = USE_VAAPISINK_GLX;
 906     sink->use_reflection = FALSE;
 907 }