gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  gstreamer-vaapi (C) 2010-2011 Splitted-Desktop Systems
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public License
   8  *  as published by the Free Software Foundation; either version 2.1
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free
  18  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * SECTION:gstvaapisink
  24  * @short_description: A VA-API based videosink
  25  *
  26  * vaapisink renders video frames to a drawable (X #Window) on a local
  27  * display using the Video Acceleration (VA) API. The element will
  28  * create its own internal window and render into it.
  29  */
  30
  31 #include "config.h"
  32 #include <gst/gst.h>
  33 #include <gst/video/video.h>
  34 #include <gst/vaapi/gstvaapivideobuffer.h>
  35 #include <gst/vaapi/gstvaapivideosink.h>
  36 #include <gst/vaapi/gstvaapidisplay_x11.h>
  37 #include <gst/vaapi/gstvaapiwindow_x11.h>
  38 #if USE_VAAPISINK_GLX
  39 #include <gst/vaapi/gstvaapidisplay_glx.h>
  40 #include <gst/vaapi/gstvaapiwindow_glx.h>
  41 #endif
  42 #include "gstvaapisink.h"
  43
  44 /* Supported interfaces */
  45 #include <gst/interfaces/xoverlay.h>
  46
  47 #define GST_PLUGIN_NAME "vaapisink"
  48 #define GST_PLUGIN_DESC "A VA-API based videosink"
  49
  50 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  51 #define GST_CAT_DEFAULT gst_debug_vaapisink
  52
  53 /* ElementFactory information */
  54 static const GstElementDetails gst_vaapisink_details =
  55     GST_ELEMENT_DETAILS(
  56         "VA-API sink",
  57         "Sink/Video",
  58         GST_PLUGIN_DESC,
  59         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  60
  61 /* Default template */
  62 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  63     GST_STATIC_PAD_TEMPLATE(
  64         "sink",
  65         GST_PAD_SINK,
  66         GST_PAD_ALWAYS,
  67         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  68
  69 static void gst_vaapisink_iface_init(GType type);
  70
  71 GST_BOILERPLATE_FULL(
  72     GstVaapiSink,
  73     gst_vaapisink,
  74     GstVideoSink,
  75     GST_TYPE_VIDEO_SINK,
  76     gst_vaapisink_iface_init);
  77
  78 enum {
  79     PROP_0,
  80
  81     PROP_USE_GLX,
  82     PROP_DISPLAY,
  83     PROP_FULLSCREEN,
  84     PROP_SYNCHRONOUS,
  85     PROP_USE_REFLECTION
  86 };
  87
  88 /* GstImplementsInterface interface */
  89
  90 static gboolean
  91 gst_vaapisink_implements_interface_supported(
  92     GstImplementsInterface *iface,
  93     GType                   type
  94 )
  95 {
  96     return (type == GST_VAAPI_TYPE_VIDEO_SINK ||
  97             type == GST_TYPE_X_OVERLAY);
  98 }
  99
 100 static void
 101 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 102 {
 103     iface->supported = gst_vaapisink_implements_interface_supported;
 104 }
 105
 106 /* GstVaapiVideoSink interface */
 107
 108 static GstVaapiDisplay *
 109 gst_vaapisink_get_display(GstVaapiSink *sink);
 110
 111 static GstVaapiDisplay *
 112 gst_vaapi_video_sink_do_get_display(GstVaapiVideoSink *sink)
 113 {
 114     return gst_vaapisink_get_display(GST_VAAPISINK(sink));
 115 }
 116
 117 static void
 118 gst_vaapi_video_sink_iface_init(GstVaapiVideoSinkInterface *iface)
 119 {
 120     iface->get_display = gst_vaapi_video_sink_do_get_display;
 121 }
 122
 123 /* GstXOverlay interface */
 124
 125 static gboolean
 126 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, XID xid);
 127
 128 static GstFlowReturn
 129 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 130
 131 static void
 132 gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, XID xid)
 133 {
 134     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 135
 136     /* Disable GLX rendering when vaapisink is using a foreign X
 137        window. It's pretty much useless */
 138     sink->use_glx = FALSE;
 139
 140     sink->foreign_window = TRUE;
 141     gst_vaapisink_ensure_window_xid(sink, xid);
 142 }
 143
 144 static void
 145 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 146 {
 147     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 148     GstBuffer *buffer;
 149
 150     buffer = gst_base_sink_get_last_buffer(base_sink);
 151     if (buffer) {
 152         gst_vaapisink_show_frame(base_sink, buffer);
 153         gst_buffer_unref(buffer);
 154     }
 155 }
 156
 157 static void
 158 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 159 {
 160     iface->set_xwindow_id = gst_vaapisink_xoverlay_set_xid;
 161     iface->expose         = gst_vaapisink_xoverlay_expose;
 162 }
 163
 164 static void
 165 gst_vaapisink_iface_init(GType type)
 166 {
 167     const GType g_define_type_id = type;
 168
 169     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
 170                           gst_vaapisink_implements_iface_init);
 171     G_IMPLEMENT_INTERFACE(GST_VAAPI_TYPE_VIDEO_SINK,
 172                           gst_vaapi_video_sink_iface_init);
 173     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
 174                           gst_vaapisink_xoverlay_iface_init);
 175 }
 176
 177 static void
 178 gst_vaapisink_destroy(GstVaapiSink *sink)
 179 {
 180     if (sink->display) {
 181         g_object_unref(sink->display);
 182         sink->display = NULL;
 183     }
 184
 185     if (sink->display_name) {
 186         g_free(sink->display_name);
 187         sink->display_name = NULL;
 188     }
 189 }
 190
 191 /* Checks whether a ConfigureNotify event is in the queue */
 192 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 193 struct _ConfigureNotifyEventPendingArgs {
 194     Window      window;
 195     guint       width;
 196     guint       height;
 197     gboolean    match;
 198 };
 199
 200 static Bool
 201 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 202 {
 203     ConfigureNotifyEventPendingArgs * const args =
 204         (ConfigureNotifyEventPendingArgs *)arg;
 205
 206     if (xev->type == ConfigureNotify &&
 207         xev->xconfigure.window == args->window &&
 208         xev->xconfigure.width  == args->width  &&
 209         xev->xconfigure.height == args->height)
 210         args->match = TRUE;
 211
 212     /* XXX: this is a hack to traverse the whole queue because we
 213        can't use XPeekIfEvent() since it could block */
 214     return False;
 215 }
 216
 217 static gboolean
 218 configure_notify_event_pending(
 219     GstVaapiSink *sink,
 220     Window        window,
 221     guint         width,
 222     guint         height
 223 )
 224 {
 225     ConfigureNotifyEventPendingArgs args;
 226     XEvent xev;
 227
 228     args.window = window;
 229     args.width  = width;
 230     args.height = height;
 231     args.match  = FALSE;
 232
 233     /* XXX: don't use XPeekIfEvent() because it might block */
 234     XCheckIfEvent(
 235         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 236         &xev,
 237         configure_notify_event_pending_cb, (XPointer)&args
 238     );
 239     return args.match;
 240 }
 241
 242 static inline gboolean
 243 gst_vaapisink_ensure_display(GstVaapiSink *sink)
 244 {
 245     if (!sink->display) {
 246 #if USE_VAAPISINK_GLX
 247         if (sink->use_glx)
 248             sink->display = gst_vaapi_display_glx_new(sink->display_name);
 249         else
 250 #endif
 251             sink->display = gst_vaapi_display_x11_new(sink->display_name);
 252         if (!sink->display || !gst_vaapi_display_get_display(sink->display))
 253             return FALSE;
 254         g_object_set(sink, "synchronous", sink->synchronous, NULL);
 255     }
 256     return sink->display != NULL;
 257 }
 258
 259 static gboolean
 260 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 261 {
 262     GstVaapiRectangle * const display_rect = &sink->display_rect;
 263     guint num, den, display_par_n, display_par_d;
 264     double display_ratio;
 265     gboolean success;
 266
 267     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 268
 269     gst_vaapi_display_get_pixel_aspect_ratio(
 270         sink->display,
 271         &display_par_n, &display_par_d
 272     );
 273     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 274               display_par_n, display_par_d);
 275
 276     success = gst_video_calculate_display_ratio(
 277         &num, &den,
 278         sink->video_width, sink->video_height,
 279         sink->video_par_n, sink->video_par_d,
 280         display_par_n, display_par_d
 281     );
 282     if (!success)
 283         return FALSE;
 284     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 285               sink->video_width, sink->video_height, num, den);
 286
 287     if ((sink->video_height % den) == 0) {
 288         GST_DEBUG("keeping video height");
 289         display_rect->width  =
 290             gst_util_uint64_scale_int(sink->video_height, num, den);
 291         display_rect->height = sink->video_height;
 292     }
 293     else if ((sink->video_width % num) == 0) {
 294         GST_DEBUG("keeping video width");
 295         display_rect->width  = sink->video_width;
 296         display_rect->height =
 297             gst_util_uint64_scale_int(sink->video_width, den, num);
 298     }
 299     else {
 300         GST_DEBUG("approximating while keeping video height");
 301         display_rect->width  =
 302             gst_util_uint64_scale_int(sink->video_height, num, den);
 303         display_rect->height = sink->video_height;
 304     }
 305     display_ratio = (gdouble)display_rect->width / display_rect->height;
 306     GST_DEBUG("scaling to %ux%u", display_rect->width, display_rect->height);
 307
 308     if (sink->fullscreen || sink->foreign_window ||
 309         display_rect->width > width || display_rect->height > height) {
 310         if (sink->video_width > sink->video_height) {
 311             display_rect->width  = width;
 312             display_rect->height = width / display_ratio;
 313         }
 314         else {
 315             display_rect->width  = height * display_ratio;
 316             display_rect->height = height;
 317         }
 318     }
 319
 320     if (sink->fullscreen) {
 321         display_rect->x  = (width  - display_rect->width)  / 2;
 322         display_rect->y  = (height - display_rect->height) / 2;
 323     }
 324     else {
 325         display_rect->x  = 0;
 326         display_rect->y  = 0;
 327     }
 328
 329     GST_DEBUG("render rect (%d,%d):%ux%u",
 330               display_rect->x, display_rect->y,
 331               display_rect->width, display_rect->height);
 332     return TRUE;
 333 }
 334
 335 static inline gboolean
 336 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 337 {
 338     GstVaapiDisplay * const display = sink->display;
 339
 340     if (!sink->window) {
 341 #if USE_VAAPISINK_GLX
 342         if (sink->use_glx)
 343             sink->window = gst_vaapi_window_glx_new(display, width, height);
 344         else
 345 #endif
 346             sink->window = gst_vaapi_window_x11_new(display, width, height);
 347         if (sink->window)
 348             gst_x_overlay_got_xwindow_id(
 349                 GST_X_OVERLAY(sink),
 350                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 351             );
 352     }
 353     return sink->window != NULL;
 354 }
 355
 356 static gboolean
 357 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, XID xid)
 358 {
 359     Window rootwin;
 360     unsigned int width, height, border_width, depth;
 361     int x, y;
 362
 363     if (!gst_vaapisink_ensure_display(sink))
 364         return FALSE;
 365
 366     gst_vaapi_display_lock(sink->display);
 367     XGetGeometry(
 368         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 369         xid,
 370         &rootwin,
 371         &x, &y, &width, &height, &border_width, &depth
 372     );
 373     gst_vaapi_display_unlock(sink->display);
 374
 375     if ((width != sink->window_width || height != sink->window_height) &&
 376         !configure_notify_event_pending(sink, xid, width, height)) {
 377         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 378             return FALSE;
 379         sink->window_width  = width;
 380         sink->window_height = height;
 381     }
 382
 383     if (sink->window &&
 384         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 385         return TRUE;
 386
 387     if (sink->window) {
 388         g_object_unref(sink->window);
 389         sink->window = NULL;
 390     }
 391
 392 #if USE_VAAPISINK_GLX
 393     if (sink->use_glx)
 394         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 395     else
 396 #endif
 397         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 398     return sink->window != NULL;
 399 }
 400
 401 static gboolean
 402 gst_vaapisink_start(GstBaseSink *base_sink)
 403 {
 404     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 405
 406     if (!gst_vaapisink_ensure_display(sink))
 407         return FALSE;
 408     return TRUE;
 409 }
 410
 411 static gboolean
 412 gst_vaapisink_stop(GstBaseSink *base_sink)
 413 {
 414     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 415
 416     if (sink->window) {
 417         g_object_unref(sink->window);
 418         sink->window = NULL;
 419     }
 420
 421     if (sink->display) {
 422         g_object_unref(sink->display);
 423         sink->display = NULL;
 424     }
 425     return TRUE;
 426 }
 427
 428 static gboolean
 429 gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
 430 {
 431     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 432     GstStructure * const structure = gst_caps_get_structure(caps, 0);
 433     guint display_width, display_height, win_width, win_height;
 434     gint video_width, video_height, video_par_n = 1, video_par_d = 1;
 435
 436     if (!structure)
 437         return FALSE;
 438     if (!gst_structure_get_int(structure, "width",  &video_width))
 439         return FALSE;
 440     if (!gst_structure_get_int(structure, "height", &video_height))
 441         return FALSE;
 442     sink->video_width  = video_width;
 443     sink->video_height = video_height;
 444
 445     gst_video_parse_caps_pixel_aspect_ratio(caps, &video_par_n, &video_par_d);
 446     sink->video_par_n  = video_par_n;
 447     sink->video_par_d  = video_par_d;
 448     GST_DEBUG("video pixel-aspect-ratio %d/%d", video_par_n, video_par_d);
 449
 450     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 451     if (!gst_vaapisink_ensure_render_rect(sink, display_width, display_height))
 452         return FALSE;
 453
 454     if (sink->fullscreen) {
 455         win_width  = display_width;
 456         win_height = display_height;
 457     }
 458     else {
 459         win_width  = sink->display_rect.width;
 460         win_height = sink->display_rect.height;
 461     }
 462
 463     if (sink->window)
 464         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 465     else {
 466         gst_vaapi_display_lock(sink->display);
 467         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 468         gst_vaapi_display_unlock(sink->display);
 469         if (sink->window)
 470             return TRUE;
 471         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 472             return FALSE;
 473         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 474         gst_vaapi_window_show(sink->window);
 475     }
 476     sink->window_width  = win_width;
 477     sink->window_height = win_height;
 478     return TRUE;
 479 }
 480
 481 static GstFlowReturn
 482 gst_vaapisink_buffer_alloc(
 483     GstBaseSink *base_sink,
 484     guint64      offset,
 485     guint        size,
 486     GstCaps     *caps,
 487     GstBuffer  **pout_buffer
 488 )
 489 {
 490     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 491     GstStructure *structure;
 492     GstBuffer *buffer;
 493
 494     structure = gst_caps_get_structure(caps, 0);
 495     if (!gst_structure_has_name(structure, "video/x-vaapi-surface"))
 496         goto error_invalid_caps;
 497
 498     buffer = gst_vaapi_video_buffer_new(sink->display);
 499     if (!buffer)
 500         goto error_create_buffer;
 501
 502     gst_buffer_set_caps(buffer, caps);
 503     *pout_buffer = buffer;
 504     return GST_FLOW_OK;
 505
 506     /* ERRORS */
 507 error_invalid_caps:
 508     {
 509         GST_DEBUG("failed to validate input caps");
 510         return GST_FLOW_UNEXPECTED;
 511     }
 512 error_create_buffer:
 513     {
 514         GST_DEBUG("failed to create video buffer");
 515         return GST_FLOW_UNEXPECTED;
 516     }
 517 }
 518
 519 #if USE_VAAPISINK_GLX
 520 static void
 521 render_background(GstVaapiSink *sink)
 522 {
 523     /* Original code from Mirco Muller (MacSlow):
 524        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 525     GLfloat fStartX = 0.0f;
 526     GLfloat fStartY = 0.0f;
 527     GLfloat fWidth  = (GLfloat)sink->window_width;
 528     GLfloat fHeight = (GLfloat)sink->window_height;
 529
 530     glClear(GL_COLOR_BUFFER_BIT);
 531     glBegin(GL_QUADS);
 532     {
 533         /* top third, darker grey to white */
 534         glColor3f(0.85f, 0.85f, 0.85f);
 535         glVertex3f(fStartX, fStartY, 0.0f);
 536         glColor3f(0.85f, 0.85f, 0.85f);
 537         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 538         glColor3f(1.0f, 1.0f, 1.0f);
 539         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 540         glColor3f(1.0f, 1.0f, 1.0f);
 541         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 542
 543         /* middle third, just plain white */
 544         glColor3f(1.0f, 1.0f, 1.0f);
 545         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 546         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 547         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 548         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 549
 550         /* bottom third, white to lighter grey */
 551         glColor3f(1.0f, 1.0f, 1.0f);
 552         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 553         glColor3f(1.0f, 1.0f, 1.0f);
 554         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 555         glColor3f(0.62f, 0.66f, 0.69f);
 556         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 557         glColor3f(0.62f, 0.66f, 0.69f);
 558         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 559     }
 560     glEnd();
 561 }
 562
 563 static void
 564 render_frame(GstVaapiSink *sink)
 565 {
 566     const guint x1 = sink->display_rect.x;
 567     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 568     const guint y1 = sink->display_rect.y;
 569     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 570
 571     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 572     glBegin(GL_QUADS);
 573     {
 574         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 575         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 576         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 577         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 578     }
 579     glEnd();
 580 }
 581
 582 static void
 583 render_reflection(GstVaapiSink *sink)
 584 {
 585     const guint x1 = sink->display_rect.x;
 586     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 587     const guint y1 = sink->display_rect.y;
 588     const guint rh = sink->display_rect.height / 5;
 589     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 590
 591     glBegin(GL_QUADS);
 592     {
 593         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 594         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 595         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 596
 597         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 598         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 599         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 600     }
 601     glEnd();
 602 }
 603
 604 static gboolean
 605 gst_vaapisink_show_frame_glx(
 606     GstVaapiSink    *sink,
 607     GstVaapiSurface *surface,
 608     guint            flags
 609 )
 610 {
 611     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 612     GLenum target;
 613     GLuint texture;
 614
 615     gst_vaapi_window_glx_make_current(window);
 616     if (!sink->texture) {
 617         sink->texture = gst_vaapi_texture_new(
 618             sink->display,
 619             GL_TEXTURE_2D,
 620             GL_BGRA,
 621             sink->video_width,
 622             sink->video_height
 623         );
 624         if (!sink->texture)
 625             goto error_create_texture;
 626     }
 627     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 628         goto error_transfer_surface;
 629
 630     target  = gst_vaapi_texture_get_target(sink->texture);
 631     texture = gst_vaapi_texture_get_id(sink->texture);
 632     if (target != GL_TEXTURE_2D || !texture)
 633         return FALSE;
 634
 635     if (sink->use_reflection)
 636         render_background(sink);
 637
 638     glEnable(target);
 639     glBindTexture(target, texture);
 640     {
 641         if (sink->use_reflection) {
 642             glPushMatrix();
 643             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 644             glTranslatef(50.0f, 0.0f, 0.0f);
 645         }
 646         render_frame(sink);
 647         if (sink->use_reflection) {
 648             glPushMatrix();
 649             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 650             render_reflection(sink);
 651             glPopMatrix();
 652             glPopMatrix();
 653         }
 654     }
 655     glBindTexture(target, 0);
 656     glDisable(target);
 657     gst_vaapi_window_glx_swap_buffers(window);
 658     return TRUE;
 659
 660     /* ERRORS */
 661 error_create_texture:
 662     {
 663         GST_DEBUG("could not create VA/GLX texture");
 664         return FALSE;
 665     }
 666 error_transfer_surface:
 667     {
 668         GST_DEBUG("could not transfer VA surface to texture");
 669         return FALSE;
 670     }
 671 }
 672 #endif
 673
 674 static inline gboolean
 675 gst_vaapisink_show_frame_x11(
 676     GstVaapiSink    *sink,
 677     GstVaapiSurface *surface,
 678     guint            flags
 679 )
 680 {
 681     if (!gst_vaapi_window_put_surface(sink->window, surface,
 682                                       NULL, &sink->display_rect, flags)) {
 683         GST_DEBUG("could not render VA surface");
 684         return FALSE;
 685     }
 686     return TRUE;
 687 }
 688
 689 static GstFlowReturn
 690 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 691 {
 692     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 693     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 694     GstVaapiSurface *surface;
 695     guint flags;
 696     gboolean success;
 697
 698     if (!sink->window)
 699         return GST_FLOW_UNEXPECTED;
 700
 701     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 702     if (!surface)
 703         return GST_FLOW_UNEXPECTED;
 704
 705     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 706               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 707
 708     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 709
 710 #if USE_VAAPISINK_GLX
 711     if (sink->use_glx)
 712         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 713     else
 714 #endif
 715         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 716     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 717 }
 718
 719 static void
 720 gst_vaapisink_finalize(GObject *object)
 721 {
 722     gst_vaapisink_destroy(GST_VAAPISINK(object));
 723
 724     G_OBJECT_CLASS(parent_class)->finalize(object);
 725 }
 726
 727 static void
 728 gst_vaapisink_set_property(
 729     GObject      *object,
 730     guint         prop_id,
 731     const GValue *value,
 732     GParamSpec   *pspec
 733 )
 734 {
 735     GstVaapiSink * const sink = GST_VAAPISINK(object);
 736
 737     switch (prop_id) {
 738     case PROP_USE_GLX:
 739         sink->use_glx = g_value_get_boolean(value);
 740         break;
 741     case PROP_DISPLAY:
 742         g_free(sink->display_name);
 743         sink->display_name = g_strdup(g_value_get_string(value));
 744         break;
 745     case PROP_FULLSCREEN:
 746         sink->fullscreen = g_value_get_boolean(value);
 747         break;
 748     case PROP_SYNCHRONOUS:
 749         sink->synchronous = g_value_get_boolean(value);
 750         break;
 751     case PROP_USE_REFLECTION:
 752         sink->use_reflection = g_value_get_boolean(value);
 753         break;
 754     default:
 755         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 756         break;
 757     }
 758 }
 759
 760 static void
 761 gst_vaapisink_get_property(
 762     GObject    *object,
 763     guint       prop_id,
 764     GValue     *value,
 765     GParamSpec *pspec
 766 )
 767 {
 768     GstVaapiSink * const sink = GST_VAAPISINK(object);
 769
 770     switch (prop_id) {
 771     case PROP_USE_GLX:
 772         g_value_set_boolean(value, sink->use_glx);
 773         break;
 774     case PROP_DISPLAY:
 775         g_value_set_string(value, sink->display_name);
 776         break;
 777     case PROP_FULLSCREEN:
 778         g_value_set_boolean(value, sink->fullscreen);
 779         break;
 780     case PROP_SYNCHRONOUS:
 781         g_value_set_boolean(value, sink->synchronous);
 782         break;
 783     case PROP_USE_REFLECTION:
 784         g_value_set_boolean(value, sink->use_reflection);
 785         break;
 786     default:
 787         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 788         break;
 789     }
 790 }
 791
 792 static void
 793 gst_vaapisink_base_init(gpointer klass)
 794 {
 795     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 796
 797     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 798
 799     gst_element_class_add_pad_template(
 800         element_class,
 801         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 802     );
 803 }
 804
 805 static void
 806 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 807 {
 808     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 809     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 810
 811     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 812                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 813
 814     object_class->finalize       = gst_vaapisink_finalize;
 815     object_class->set_property   = gst_vaapisink_set_property;
 816     object_class->get_property   = gst_vaapisink_get_property;
 817
 818     basesink_class->start        = gst_vaapisink_start;
 819     basesink_class->stop         = gst_vaapisink_stop;
 820     basesink_class->set_caps     = gst_vaapisink_set_caps;
 821     basesink_class->buffer_alloc = gst_vaapisink_buffer_alloc;
 822     basesink_class->preroll      = gst_vaapisink_show_frame;
 823     basesink_class->render       = gst_vaapisink_show_frame;
 824
 825 #if USE_VAAPISINK_GLX
 826     g_object_class_install_property
 827         (object_class,
 828          PROP_USE_GLX,
 829          g_param_spec_boolean("use-glx",
 830                               "GLX rendering",
 831                               "Enables GLX rendering",
 832                               TRUE,
 833                               G_PARAM_READWRITE));
 834
 835     g_object_class_install_property
 836         (object_class,
 837          PROP_USE_REFLECTION,
 838          g_param_spec_boolean("use-reflection",
 839                               "Reflection effect",
 840                               "Enables OpenGL reflection effect",
 841                               FALSE,
 842                               G_PARAM_READWRITE));
 843 #endif
 844
 845     g_object_class_install_property
 846         (object_class,
 847          PROP_DISPLAY,
 848          g_param_spec_string("display",
 849                              "X11 display name",
 850                              "X11 display name",
 851                              "",
 852                              G_PARAM_READWRITE));
 853
 854     g_object_class_install_property
 855         (object_class,
 856          PROP_FULLSCREEN,
 857          g_param_spec_boolean("fullscreen",
 858                               "Fullscreen",
 859                               "Requests window in fullscreen state",
 860                               FALSE,
 861                               G_PARAM_READWRITE));
 862
 863     /**
 864      * GstVaapiSink:synchronous:
 865      *
 866      * When enabled, runs the X display in synchronous mode. Note that
 867      * this is used only for debugging.
 868      */
 869     g_object_class_install_property
 870         (object_class,
 871          PROP_SYNCHRONOUS,
 872          g_param_spec_boolean("synchronous",
 873                               "Synchronous mode",
 874                               "Toggles X display synchronous mode",
 875                               FALSE,
 876                               G_PARAM_READWRITE));
 877 }
 878
 879 static void
 880 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 881 {
 882     sink->display_name   = NULL;
 883     sink->display        = NULL;
 884     sink->window         = NULL;
 885     sink->window_width   = 0;
 886     sink->window_height  = 0;
 887     sink->texture        = NULL;
 888     sink->video_width    = 0;
 889     sink->video_height   = 0;
 890     sink->video_par_n    = 1;
 891     sink->video_par_d    = 1;
 892     sink->foreign_window = FALSE;
 893     sink->fullscreen     = FALSE;
 894     sink->synchronous    = FALSE;
 895     sink->use_glx        = USE_VAAPISINK_GLX;
 896     sink->use_reflection = FALSE;
 897 }
 898
 899 GstVaapiDisplay *
 900 gst_vaapisink_get_display(GstVaapiSink *sink)
 901 {
 902     if (!gst_vaapisink_ensure_display(sink))
 903         return NULL;
 904     return sink->display;
 905 }