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, guintptr window_id);
 127
 128 static GstFlowReturn
 129 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 130
 131 static void
 132 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window_id)
 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, window_id);
 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_window_handle = gst_vaapisink_xoverlay_set_window_handle;
 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, guintptr window_id)
 358 {
 359     Window rootwin;
 360     unsigned int width, height, border_width, depth;
 361     int x, y;
 362     XID xid = window_id;
 363
 364     if (!gst_vaapisink_ensure_display(sink))
 365         return FALSE;
 366
 367     gst_vaapi_display_lock(sink->display);
 368     XGetGeometry(
 369         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 370         xid,
 371         &rootwin,
 372         &x, &y, &width, &height, &border_width, &depth
 373     );
 374     gst_vaapi_display_unlock(sink->display);
 375
 376     if ((width != sink->window_width || height != sink->window_height) &&
 377         !configure_notify_event_pending(sink, xid, width, height)) {
 378         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 379             return FALSE;
 380         sink->window_width  = width;
 381         sink->window_height = height;
 382     }
 383
 384     if (sink->window &&
 385         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 386         return TRUE;
 387
 388     if (sink->window) {
 389         g_object_unref(sink->window);
 390         sink->window = NULL;
 391     }
 392
 393 #if USE_VAAPISINK_GLX
 394     if (sink->use_glx)
 395         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 396     else
 397 #endif
 398         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 399     return sink->window != NULL;
 400 }
 401
 402 static gboolean
 403 gst_vaapisink_start(GstBaseSink *base_sink)
 404 {
 405     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 406
 407     if (!gst_vaapisink_ensure_display(sink))
 408         return FALSE;
 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     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 452     if (!gst_vaapisink_ensure_render_rect(sink, display_width, display_height))
 453         return FALSE;
 454
 455     if (sink->fullscreen) {
 456         win_width  = display_width;
 457         win_height = display_height;
 458     }
 459     else {
 460         win_width  = sink->display_rect.width;
 461         win_height = sink->display_rect.height;
 462     }
 463
 464     if (sink->window)
 465         gst_vaapi_window_set_size(sink->window, win_width, win_height);
 466     else {
 467         gst_vaapi_display_lock(sink->display);
 468         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 469         gst_vaapi_display_unlock(sink->display);
 470         if (sink->window)
 471             return TRUE;
 472         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 473             return FALSE;
 474         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 475         gst_vaapi_window_show(sink->window);
 476     }
 477     sink->window_width  = win_width;
 478     sink->window_height = win_height;
 479     return TRUE;
 480 }
 481
 482 static GstFlowReturn
 483 gst_vaapisink_buffer_alloc(
 484     GstBaseSink *base_sink,
 485     guint64      offset,
 486     guint        size,
 487     GstCaps     *caps,
 488     GstBuffer  **pout_buffer
 489 )
 490 {
 491     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 492     GstStructure *structure;
 493     GstBuffer *buffer;
 494
 495     structure = gst_caps_get_structure(caps, 0);
 496     if (!gst_structure_has_name(structure, "video/x-vaapi-surface"))
 497         goto error_invalid_caps;
 498
 499     buffer = gst_vaapi_video_buffer_new(sink->display);
 500     if (!buffer)
 501         goto error_create_buffer;
 502
 503     gst_buffer_set_caps(buffer, caps);
 504     *pout_buffer = buffer;
 505     return GST_FLOW_OK;
 506
 507     /* ERRORS */
 508 error_invalid_caps:
 509     {
 510         GST_DEBUG("failed to validate input caps");
 511         return GST_FLOW_UNEXPECTED;
 512     }
 513 error_create_buffer:
 514     {
 515         GST_DEBUG("failed to create video buffer");
 516         return GST_FLOW_UNEXPECTED;
 517     }
 518 }
 519
 520 #if USE_VAAPISINK_GLX
 521 static void
 522 render_background(GstVaapiSink *sink)
 523 {
 524     /* Original code from Mirco Muller (MacSlow):
 525        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 526     GLfloat fStartX = 0.0f;
 527     GLfloat fStartY = 0.0f;
 528     GLfloat fWidth  = (GLfloat)sink->window_width;
 529     GLfloat fHeight = (GLfloat)sink->window_height;
 530
 531     glClear(GL_COLOR_BUFFER_BIT);
 532     glBegin(GL_QUADS);
 533     {
 534         /* top third, darker grey to white */
 535         glColor3f(0.85f, 0.85f, 0.85f);
 536         glVertex3f(fStartX, fStartY, 0.0f);
 537         glColor3f(0.85f, 0.85f, 0.85f);
 538         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 539         glColor3f(1.0f, 1.0f, 1.0f);
 540         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 541         glColor3f(1.0f, 1.0f, 1.0f);
 542         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 543
 544         /* middle third, just plain white */
 545         glColor3f(1.0f, 1.0f, 1.0f);
 546         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 547         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 548         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 549         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 550
 551         /* bottom third, white to lighter grey */
 552         glColor3f(1.0f, 1.0f, 1.0f);
 553         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 554         glColor3f(1.0f, 1.0f, 1.0f);
 555         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 556         glColor3f(0.62f, 0.66f, 0.69f);
 557         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 558         glColor3f(0.62f, 0.66f, 0.69f);
 559         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 560     }
 561     glEnd();
 562 }
 563
 564 static void
 565 render_frame(GstVaapiSink *sink)
 566 {
 567     const guint x1 = sink->display_rect.x;
 568     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 569     const guint y1 = sink->display_rect.y;
 570     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 571
 572     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 573     glBegin(GL_QUADS);
 574     {
 575         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 576         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 577         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 578         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 579     }
 580     glEnd();
 581 }
 582
 583 static void
 584 render_reflection(GstVaapiSink *sink)
 585 {
 586     const guint x1 = sink->display_rect.x;
 587     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 588     const guint y1 = sink->display_rect.y;
 589     const guint rh = sink->display_rect.height / 5;
 590     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 591
 592     glBegin(GL_QUADS);
 593     {
 594         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 595         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 596         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 597
 598         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 599         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 600         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 601     }
 602     glEnd();
 603 }
 604
 605 static gboolean
 606 gst_vaapisink_show_frame_glx(
 607     GstVaapiSink    *sink,
 608     GstVaapiSurface *surface,
 609     guint            flags
 610 )
 611 {
 612     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 613     GLenum target;
 614     GLuint texture;
 615
 616     gst_vaapi_window_glx_make_current(window);
 617     if (!sink->texture) {
 618         sink->texture = gst_vaapi_texture_new(
 619             sink->display,
 620             GL_TEXTURE_2D,
 621             GL_BGRA,
 622             sink->video_width,
 623             sink->video_height
 624         );
 625         if (!sink->texture)
 626             goto error_create_texture;
 627     }
 628     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 629         goto error_transfer_surface;
 630
 631     target  = gst_vaapi_texture_get_target(sink->texture);
 632     texture = gst_vaapi_texture_get_id(sink->texture);
 633     if (target != GL_TEXTURE_2D || !texture)
 634         return FALSE;
 635
 636     if (sink->use_reflection)
 637         render_background(sink);
 638
 639     glEnable(target);
 640     glBindTexture(target, texture);
 641     {
 642         if (sink->use_reflection) {
 643             glPushMatrix();
 644             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 645             glTranslatef(50.0f, 0.0f, 0.0f);
 646         }
 647         render_frame(sink);
 648         if (sink->use_reflection) {
 649             glPushMatrix();
 650             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 651             render_reflection(sink);
 652             glPopMatrix();
 653             glPopMatrix();
 654         }
 655     }
 656     glBindTexture(target, 0);
 657     glDisable(target);
 658     gst_vaapi_window_glx_swap_buffers(window);
 659     return TRUE;
 660
 661     /* ERRORS */
 662 error_create_texture:
 663     {
 664         GST_DEBUG("could not create VA/GLX texture");
 665         return FALSE;
 666     }
 667 error_transfer_surface:
 668     {
 669         GST_DEBUG("could not transfer VA surface to texture");
 670         return FALSE;
 671     }
 672 }
 673 #endif
 674
 675 static inline gboolean
 676 gst_vaapisink_show_frame_x11(
 677     GstVaapiSink    *sink,
 678     GstVaapiSurface *surface,
 679     guint            flags
 680 )
 681 {
 682     if (!gst_vaapi_window_put_surface(sink->window, surface,
 683                                       NULL, &sink->display_rect, flags)) {
 684         GST_DEBUG("could not render VA surface");
 685         return FALSE;
 686     }
 687     return TRUE;
 688 }
 689
 690 static GstFlowReturn
 691 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 692 {
 693     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 694     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 695     GstVaapiSurface *surface;
 696     guint flags;
 697     gboolean success;
 698
 699     if (!sink->window)
 700         return GST_FLOW_UNEXPECTED;
 701
 702     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 703     if (!surface)
 704         return GST_FLOW_UNEXPECTED;
 705
 706     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 707               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 708
 709     flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
 710
 711 #if USE_VAAPISINK_GLX
 712     if (sink->use_glx)
 713         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 714     else
 715 #endif
 716         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 717     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 718 }
 719
 720 static void
 721 gst_vaapisink_finalize(GObject *object)
 722 {
 723     gst_vaapisink_destroy(GST_VAAPISINK(object));
 724
 725     G_OBJECT_CLASS(parent_class)->finalize(object);
 726 }
 727
 728 static void
 729 gst_vaapisink_set_property(
 730     GObject      *object,
 731     guint         prop_id,
 732     const GValue *value,
 733     GParamSpec   *pspec
 734 )
 735 {
 736     GstVaapiSink * const sink = GST_VAAPISINK(object);
 737
 738     switch (prop_id) {
 739     case PROP_USE_GLX:
 740         sink->use_glx = g_value_get_boolean(value);
 741         break;
 742     case PROP_DISPLAY:
 743         g_free(sink->display_name);
 744         sink->display_name = g_strdup(g_value_get_string(value));
 745         break;
 746     case PROP_FULLSCREEN:
 747         sink->fullscreen = g_value_get_boolean(value);
 748         break;
 749     case PROP_SYNCHRONOUS:
 750         sink->synchronous = g_value_get_boolean(value);
 751         break;
 752     case PROP_USE_REFLECTION:
 753         sink->use_reflection = g_value_get_boolean(value);
 754         break;
 755     default:
 756         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 757         break;
 758     }
 759 }
 760
 761 static void
 762 gst_vaapisink_get_property(
 763     GObject    *object,
 764     guint       prop_id,
 765     GValue     *value,
 766     GParamSpec *pspec
 767 )
 768 {
 769     GstVaapiSink * const sink = GST_VAAPISINK(object);
 770
 771     switch (prop_id) {
 772     case PROP_USE_GLX:
 773         g_value_set_boolean(value, sink->use_glx);
 774         break;
 775     case PROP_DISPLAY:
 776         g_value_set_string(value, sink->display_name);
 777         break;
 778     case PROP_FULLSCREEN:
 779         g_value_set_boolean(value, sink->fullscreen);
 780         break;
 781     case PROP_SYNCHRONOUS:
 782         g_value_set_boolean(value, sink->synchronous);
 783         break;
 784     case PROP_USE_REFLECTION:
 785         g_value_set_boolean(value, sink->use_reflection);
 786         break;
 787     default:
 788         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 789         break;
 790     }
 791 }
 792
 793 static void
 794 gst_vaapisink_base_init(gpointer klass)
 795 {
 796     GstElementClass * const element_class = GST_ELEMENT_CLASS(klass);
 797
 798     gst_element_class_set_details(element_class, &gst_vaapisink_details);
 799
 800     gst_element_class_add_pad_template(
 801         element_class,
 802         gst_static_pad_template_get(&gst_vaapisink_sink_factory)
 803     );
 804 }
 805
 806 static void
 807 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 808 {
 809     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 810     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 811
 812     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 813                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 814
 815     object_class->finalize       = gst_vaapisink_finalize;
 816     object_class->set_property   = gst_vaapisink_set_property;
 817     object_class->get_property   = gst_vaapisink_get_property;
 818
 819     basesink_class->start        = gst_vaapisink_start;
 820     basesink_class->stop         = gst_vaapisink_stop;
 821     basesink_class->set_caps     = gst_vaapisink_set_caps;
 822     basesink_class->buffer_alloc = gst_vaapisink_buffer_alloc;
 823     basesink_class->preroll      = gst_vaapisink_show_frame;
 824     basesink_class->render       = gst_vaapisink_show_frame;
 825
 826 #if USE_VAAPISINK_GLX
 827     g_object_class_install_property
 828         (object_class,
 829          PROP_USE_GLX,
 830          g_param_spec_boolean("use-glx",
 831                               "GLX rendering",
 832                               "Enables GLX rendering",
 833                               TRUE,
 834                               G_PARAM_READWRITE));
 835
 836     g_object_class_install_property
 837         (object_class,
 838          PROP_USE_REFLECTION,
 839          g_param_spec_boolean("use-reflection",
 840                               "Reflection effect",
 841                               "Enables OpenGL reflection effect",
 842                               FALSE,
 843                               G_PARAM_READWRITE));
 844 #endif
 845
 846     g_object_class_install_property
 847         (object_class,
 848          PROP_DISPLAY,
 849          g_param_spec_string("display",
 850                              "X11 display name",
 851                              "X11 display name",
 852                              "",
 853                              G_PARAM_READWRITE));
 854
 855     g_object_class_install_property
 856         (object_class,
 857          PROP_FULLSCREEN,
 858          g_param_spec_boolean("fullscreen",
 859                               "Fullscreen",
 860                               "Requests window in fullscreen state",
 861                               FALSE,
 862                               G_PARAM_READWRITE));
 863
 864     /**
 865      * GstVaapiSink:synchronous:
 866      *
 867      * When enabled, runs the X display in synchronous mode. Note that
 868      * this is used only for debugging.
 869      */
 870     g_object_class_install_property
 871         (object_class,
 872          PROP_SYNCHRONOUS,
 873          g_param_spec_boolean("synchronous",
 874                               "Synchronous mode",
 875                               "Toggles X display synchronous mode",
 876                               FALSE,
 877                               G_PARAM_READWRITE));
 878 }
 879
 880 static void
 881 gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
 882 {
 883     sink->display_name   = NULL;
 884     sink->display        = NULL;
 885     sink->window         = NULL;
 886     sink->window_width   = 0;
 887     sink->window_height  = 0;
 888     sink->texture        = NULL;
 889     sink->video_width    = 0;
 890     sink->video_height   = 0;
 891     sink->video_par_n    = 1;
 892     sink->video_par_d    = 1;
 893     sink->foreign_window = FALSE;
 894     sink->fullscreen     = FALSE;
 895     sink->synchronous    = FALSE;
 896     sink->use_glx        = USE_VAAPISINK_GLX;
 897     sink->use_reflection = FALSE;
 898 }
 899
 900 GstVaapiDisplay *
 901 gst_vaapisink_get_display(GstVaapiSink *sink)
 902 {
 903     if (!gst_vaapisink_ensure_display(sink))
 904         return NULL;
 905     return sink->display;
 906 }