gst/vaapi/gstvaapisink.c

   1 /*
   2  *  gstvaapisink.c - VA-API video sink
   3  *
   4  *  Copyright (C) 2010-2011 Splitted-Desktop Systems
   5  *  Copyright (C) 2011-2012 Intel Corporation
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Lesser General Public License
   9  *  as published by the Free Software Foundation; either version 2.1
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Lesser General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Lesser General Public
  18  *  License along with this library; if not, write to the Free
  19  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  *  Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * SECTION:gstvaapisink
  25  * @short_description: A VA-API based videosink
  26  *
  27  * vaapisink renders video frames to a drawable (X #Window) on a local
  28  * display using the Video Acceleration (VA) API. The element will
  29  * create its own internal window and render into it.
  30  */
  31
  32 #include "config.h"
  33 #include <gst/gst.h>
  34 #include <gst/gstutils_version.h>
  35 #include <gst/video/video.h>
  36 #include <gst/video/videocontext.h>
  37 #include <gst/vaapi/gstvaapivideobuffer.h>
  38 #include <gst/vaapi/gstvaapivideosink.h>
  39 #include <gst/vaapi/gstvaapidisplay_x11.h>
  40 #include <gst/vaapi/gstvaapiwindow_x11.h>
  41 #if USE_VAAPISINK_GLX
  42 #include <gst/vaapi/gstvaapidisplay_glx.h>
  43 #include <gst/vaapi/gstvaapiwindow_glx.h>
  44 #endif
  45
  46 /* Supported interfaces */
  47 #include <gst/interfaces/xoverlay.h>
  48
  49 #include "gstvaapisink.h"
  50 #include "gstvaapipluginutil.h"
  51
  52 #define HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE \
  53     GST_PLUGINS_BASE_CHECK_VERSION(0,10,31)
  54
  55 #define HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE \
  56     GST_PLUGINS_BASE_CHECK_VERSION(0,10,29)
  57
  58 #define GST_PLUGIN_NAME "vaapisink"
  59 #define GST_PLUGIN_DESC "A VA-API based videosink"
  60
  61 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
  62 #define GST_CAT_DEFAULT gst_debug_vaapisink
  63
  64 /* ElementFactory information */
  65 static const GstElementDetails gst_vaapisink_details =
  66     GST_ELEMENT_DETAILS(
  67         "VA-API sink",
  68         "Sink/Video",
  69         GST_PLUGIN_DESC,
  70         "Gwenole Beauchesne <gwenole.beauchesne@intel.com>");
  71
  72 /* Default template */
  73 static GstStaticPadTemplate gst_vaapisink_sink_factory =
  74     GST_STATIC_PAD_TEMPLATE(
  75         "sink",
  76         GST_PAD_SINK,
  77         GST_PAD_ALWAYS,
  78         GST_STATIC_CAPS(GST_VAAPI_SURFACE_CAPS));
  79
  80 static void
  81 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface);
  82
  83 static void
  84 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface);
  85
  86 static void
  87 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface);
  88
  89 G_DEFINE_TYPE_WITH_CODE(
  90     GstVaapiSink,
  91     gst_vaapisink,
  92     GST_TYPE_VIDEO_SINK,
  93     G_IMPLEMENT_INTERFACE(GST_TYPE_IMPLEMENTS_INTERFACE,
  94                           gst_vaapisink_implements_iface_init);
  95     G_IMPLEMENT_INTERFACE(GST_TYPE_VIDEO_CONTEXT,
  96                           gst_vaapisink_video_context_iface_init);
  97     G_IMPLEMENT_INTERFACE(GST_TYPE_X_OVERLAY,
  98                           gst_vaapisink_xoverlay_iface_init));
  99
 100 enum {
 101     PROP_0,
 102
 103     PROP_USE_GLX,
 104     PROP_FULLSCREEN,
 105     PROP_SYNCHRONOUS,
 106     PROP_USE_REFLECTION
 107 };
 108
 109 /* GstImplementsInterface interface */
 110
 111 static gboolean
 112 gst_vaapisink_implements_interface_supported(
 113     GstImplementsInterface *iface,
 114     GType                   type
 115 )
 116 {
 117     return (type == GST_TYPE_VIDEO_CONTEXT ||
 118             type == GST_TYPE_X_OVERLAY);
 119 }
 120
 121 static void
 122 gst_vaapisink_implements_iface_init(GstImplementsInterfaceClass *iface)
 123 {
 124     iface->supported = gst_vaapisink_implements_interface_supported;
 125 }
 126
 127 /* GstVaapiVideoSink interface */
 128
 129 static void
 130 gst_vaapisink_set_video_context(GstVideoContext *context, const gchar *type,
 131     const GValue *value)
 132 {
 133   GstVaapiSink *sink = GST_VAAPISINK (context);
 134   gst_vaapi_set_display (type, value, &sink->display);
 135 }
 136
 137 static void
 138 gst_vaapisink_video_context_iface_init(GstVideoContextInterface *iface)
 139 {
 140     iface->set_context = gst_vaapisink_set_video_context;
 141 }
 142
 143 /* GstXOverlay interface */
 144
 145 static gboolean
 146 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id);
 147
 148 static GstFlowReturn
 149 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer);
 150
 151 static inline void
 152 _gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, guintptr window_id)
 153 {
 154     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 155
 156     /* Disable GLX rendering when vaapisink is using a foreign X
 157        window. It's pretty much useless */
 158     sink->use_glx = FALSE;
 159
 160     sink->foreign_window = TRUE;
 161     gst_vaapisink_ensure_window_xid(sink, window_id);
 162 }
 163
 164 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 165 static void
 166 gst_vaapisink_xoverlay_set_window_handle(GstXOverlay *overlay, guintptr window_id)
 167 {
 168     _gst_vaapisink_xoverlay_set_xid(overlay, window_id);
 169 }
 170 #else
 171 static void
 172 gst_vaapisink_xoverlay_set_xid(GstXOverlay *overlay, XID xid)
 173 {
 174     _gst_vaapisink_xoverlay_set_xid(overlay, xid);
 175 }
 176 #endif
 177
 178 #if HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE
 179 static void
 180 gst_vaapisink_xoverlay_set_render_rectangle(
 181     GstXOverlay *overlay,
 182     gint         x,
 183     gint         y,
 184     gint         width,
 185     gint         height
 186 )
 187 {
 188     GstVaapiSink * const sink = GST_VAAPISINK(overlay);
 189     GstVaapiRectangle * const display_rect = &sink->display_rect;
 190
 191     display_rect->x      = x;
 192     display_rect->y      = y;
 193     display_rect->width  = width;
 194     display_rect->height = height;
 195
 196     GST_DEBUG("render rect (%d,%d):%ux%u",
 197               display_rect->x, display_rect->y,
 198               display_rect->width, display_rect->height);
 199 }
 200 #endif
 201
 202 static void
 203 gst_vaapisink_xoverlay_expose(GstXOverlay *overlay)
 204 {
 205     GstBaseSink * const base_sink = GST_BASE_SINK(overlay);
 206     GstBuffer *buffer;
 207
 208     buffer = gst_base_sink_get_last_buffer(base_sink);
 209     if (buffer) {
 210         gst_vaapisink_show_frame(base_sink, buffer);
 211         gst_buffer_unref(buffer);
 212     }
 213 }
 214
 215 static void
 216 gst_vaapisink_xoverlay_iface_init(GstXOverlayClass *iface)
 217 {
 218 #if HAVE_GST_XOVERLAY_SET_WINDOW_HANDLE
 219     iface->set_window_handle    = gst_vaapisink_xoverlay_set_window_handle;
 220 #else
 221     iface->set_xwindow_id       = gst_vaapisink_xoverlay_set_xid;
 222 #endif
 223 #if HAVE_GST_XOVERLAY_SET_RENDER_RECTANGLE
 224     iface->set_render_rectangle = gst_vaapisink_xoverlay_set_render_rectangle;
 225 #endif
 226     iface->expose               = gst_vaapisink_xoverlay_expose;
 227 }
 228
 229 static void
 230 gst_vaapisink_destroy(GstVaapiSink *sink)
 231 {
 232     g_clear_object(&sink->texture);
 233     g_clear_object(&sink->display);
 234
 235     gst_caps_replace(&sink->caps, NULL);
 236 }
 237
 238 /* Checks whether a ConfigureNotify event is in the queue */
 239 typedef struct _ConfigureNotifyEventPendingArgs ConfigureNotifyEventPendingArgs;
 240 struct _ConfigureNotifyEventPendingArgs {
 241     Window      window;
 242     guint       width;
 243     guint       height;
 244     gboolean    match;
 245 };
 246
 247 static Bool
 248 configure_notify_event_pending_cb(Display *dpy, XEvent *xev, XPointer arg)
 249 {
 250     ConfigureNotifyEventPendingArgs * const args =
 251         (ConfigureNotifyEventPendingArgs *)arg;
 252
 253     if (xev->type == ConfigureNotify &&
 254         xev->xconfigure.window == args->window &&
 255         xev->xconfigure.width  == args->width  &&
 256         xev->xconfigure.height == args->height)
 257         args->match = TRUE;
 258
 259     /* XXX: this is a hack to traverse the whole queue because we
 260        can't use XPeekIfEvent() since it could block */
 261     return False;
 262 }
 263
 264 static gboolean
 265 configure_notify_event_pending(
 266     GstVaapiSink *sink,
 267     Window        window,
 268     guint         width,
 269     guint         height
 270 )
 271 {
 272     ConfigureNotifyEventPendingArgs args;
 273     XEvent xev;
 274
 275     args.window = window;
 276     args.width  = width;
 277     args.height = height;
 278     args.match  = FALSE;
 279
 280     /* XXX: don't use XPeekIfEvent() because it might block */
 281     XCheckIfEvent(
 282         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 283         &xev,
 284         configure_notify_event_pending_cb, (XPointer)&args
 285     );
 286     return args.match;
 287 }
 288
 289 static gboolean
 290 gst_vaapisink_ensure_render_rect(GstVaapiSink *sink, guint width, guint height)
 291 {
 292     GstVaapiRectangle * const display_rect = &sink->display_rect;
 293     guint num, den, display_par_n, display_par_d;
 294     gboolean success;
 295
 296     /* Return success if caps are not set yet */
 297     if (!sink->caps)
 298         return TRUE;
 299
 300     GST_DEBUG("ensure render rect within %ux%u bounds", width, height);
 301
 302     gst_vaapi_display_get_pixel_aspect_ratio(
 303         sink->display,
 304         &display_par_n, &display_par_d
 305     );
 306     GST_DEBUG("display pixel-aspect-ratio %d/%d",
 307               display_par_n, display_par_d);
 308
 309     success = gst_video_calculate_display_ratio(
 310         &num, &den,
 311         sink->video_width, sink->video_height,
 312         sink->video_par_n, sink->video_par_d,
 313         display_par_n, display_par_d
 314     );
 315     if (!success)
 316         return FALSE;
 317     GST_DEBUG("video size %dx%d, calculated ratio %d/%d",
 318               sink->video_width, sink->video_height, num, den);
 319
 320     display_rect->width = gst_util_uint64_scale_int(height, num, den);
 321     if (display_rect->width <= width) {
 322         GST_DEBUG("keeping window height");
 323         display_rect->height = height;
 324     }
 325     else {
 326         GST_DEBUG("keeping window width");
 327         display_rect->width  = width;
 328         display_rect->height =
 329             gst_util_uint64_scale_int(width, den, num);
 330     }
 331     GST_DEBUG("scaling video to %ux%u", display_rect->width, display_rect->height);
 332
 333     g_assert(display_rect->width  <= width);
 334     g_assert(display_rect->height <= height);
 335
 336     display_rect->x = (width  - display_rect->width)  / 2;
 337     display_rect->y = (height - display_rect->height) / 2;
 338
 339     GST_DEBUG("render rect (%d,%d):%ux%u",
 340               display_rect->x, display_rect->y,
 341               display_rect->width, display_rect->height);
 342     return TRUE;
 343 }
 344
 345 static inline gboolean
 346 gst_vaapisink_ensure_window(GstVaapiSink *sink, guint width, guint height)
 347 {
 348     GstVaapiDisplay * const display = sink->display;
 349
 350     if (!sink->window) {
 351 #if USE_VAAPISINK_GLX
 352         if (sink->use_glx)
 353             sink->window = gst_vaapi_window_glx_new(display, width, height);
 354         else
 355 #endif
 356             sink->window = gst_vaapi_window_x11_new(display, width, height);
 357         if (sink->window)
 358             gst_x_overlay_got_window_handle(
 359                 GST_X_OVERLAY(sink),
 360                 gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window))
 361             );
 362     }
 363     return sink->window != NULL;
 364 }
 365
 366 static gboolean
 367 gst_vaapisink_ensure_window_xid(GstVaapiSink *sink, guintptr window_id)
 368 {
 369     Window rootwin;
 370     unsigned int width, height, border_width, depth;
 371     int x, y;
 372     XID xid = window_id;
 373
 374     if (!gst_vaapi_ensure_display(sink, &sink->display))
 375         return FALSE;
 376
 377     gst_vaapi_display_lock(sink->display);
 378     XGetGeometry(
 379         gst_vaapi_display_x11_get_display(GST_VAAPI_DISPLAY_X11(sink->display)),
 380         xid,
 381         &rootwin,
 382         &x, &y, &width, &height, &border_width, &depth
 383     );
 384     gst_vaapi_display_unlock(sink->display);
 385
 386     if ((width != sink->window_width || height != sink->window_height) &&
 387         !configure_notify_event_pending(sink, xid, width, height)) {
 388         if (!gst_vaapisink_ensure_render_rect(sink, width, height))
 389             return FALSE;
 390         sink->window_width  = width;
 391         sink->window_height = height;
 392     }
 393
 394     if (sink->window &&
 395         gst_vaapi_window_x11_get_xid(GST_VAAPI_WINDOW_X11(sink->window)) == xid)
 396         return TRUE;
 397
 398     g_clear_object(&sink->window);
 399
 400 #if USE_VAAPISINK_GLX
 401     if (sink->use_glx)
 402         sink->window = gst_vaapi_window_glx_new_with_xid(sink->display, xid);
 403     else
 404 #endif
 405         sink->window = gst_vaapi_window_x11_new_with_xid(sink->display, xid);
 406     return sink->window != NULL;
 407 }
 408
 409 static gboolean
 410 gst_vaapisink_start(GstBaseSink *base_sink)
 411 {
 412     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 413
 414     return gst_vaapi_ensure_display(sink, &sink->display);
 415 }
 416
 417 static gboolean
 418 gst_vaapisink_stop(GstBaseSink *base_sink)
 419 {
 420     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 421
 422     g_clear_object(&sink->window);
 423     g_clear_object(&sink->display);
 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 win_width, win_height, display_width, display_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_caps_replace(&sink->caps, caps);
 451
 452     if (!gst_vaapi_ensure_display(sink, &sink->display))
 453         return FALSE;
 454
 455     gst_vaapi_display_get_size(sink->display, &display_width, &display_height);
 456     if (sink->foreign_window) {
 457         win_width  = sink->window_width;
 458         win_height = sink->window_height;
 459     }
 460     else if (sink->fullscreen ||
 461              video_width > display_width || video_height > display_height) {
 462         win_width  = display_width;
 463         win_height = display_height;
 464     }
 465     else {
 466         win_width  = video_width;
 467         win_height = video_height;
 468     }
 469
 470     if (sink->window) {
 471         if (!sink->foreign_window || sink->fullscreen)
 472             gst_vaapi_window_set_size(sink->window, win_width, win_height);
 473     }
 474     else {
 475         gst_vaapi_display_lock(sink->display);
 476         gst_x_overlay_prepare_xwindow_id(GST_X_OVERLAY(sink));
 477         gst_vaapi_display_unlock(sink->display);
 478         if (sink->window)
 479             return TRUE;
 480         if (!gst_vaapisink_ensure_window(sink, win_width, win_height))
 481             return FALSE;
 482         gst_vaapi_window_set_fullscreen(sink->window, sink->fullscreen);
 483         gst_vaapi_window_show(sink->window);
 484         gst_vaapi_window_get_size(sink->window, &win_width, &win_height);
 485     }
 486     sink->window_width  = win_width;
 487     sink->window_height = win_height;
 488     GST_DEBUG("window size %ux%u", win_width, win_height);
 489
 490     return gst_vaapisink_ensure_render_rect(sink, win_width, win_height);
 491 }
 492
 493 #if USE_VAAPISINK_GLX
 494 static void
 495 render_background(GstVaapiSink *sink)
 496 {
 497     /* Original code from Mirco Muller (MacSlow):
 498        <http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
 499     GLfloat fStartX = 0.0f;
 500     GLfloat fStartY = 0.0f;
 501     GLfloat fWidth  = (GLfloat)sink->window_width;
 502     GLfloat fHeight = (GLfloat)sink->window_height;
 503
 504     glClear(GL_COLOR_BUFFER_BIT);
 505     glBegin(GL_QUADS);
 506     {
 507         /* top third, darker grey to white */
 508         glColor3f(0.85f, 0.85f, 0.85f);
 509         glVertex3f(fStartX, fStartY, 0.0f);
 510         glColor3f(0.85f, 0.85f, 0.85f);
 511         glVertex3f(fStartX + fWidth, fStartY, 0.0f);
 512         glColor3f(1.0f, 1.0f, 1.0f);
 513         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 514         glColor3f(1.0f, 1.0f, 1.0f);
 515         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 516
 517         /* middle third, just plain white */
 518         glColor3f(1.0f, 1.0f, 1.0f);
 519         glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
 520         glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
 521         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 522         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 523
 524         /* bottom third, white to lighter grey */
 525         glColor3f(1.0f, 1.0f, 1.0f);
 526         glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 527         glColor3f(1.0f, 1.0f, 1.0f);
 528         glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
 529         glColor3f(0.62f, 0.66f, 0.69f);
 530         glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
 531         glColor3f(0.62f, 0.66f, 0.69f);
 532         glVertex3f(fStartX, fStartY + fHeight, 0.0f);
 533     }
 534     glEnd();
 535 }
 536
 537 static void
 538 render_frame(GstVaapiSink *sink)
 539 {
 540     const guint x1 = sink->display_rect.x;
 541     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 542     const guint y1 = sink->display_rect.y;
 543     const guint y2 = sink->display_rect.y + sink->display_rect.height;
 544
 545     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 546     glBegin(GL_QUADS);
 547     {
 548         glTexCoord2f(0.0f, 0.0f); glVertex2i(x1, y1);
 549         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y2);
 550         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y2);
 551         glTexCoord2f(1.0f, 0.0f); glVertex2i(x2, y1);
 552     }
 553     glEnd();
 554 }
 555
 556 static void
 557 render_reflection(GstVaapiSink *sink)
 558 {
 559     const guint x1 = sink->display_rect.x;
 560     const guint x2 = sink->display_rect.x + sink->display_rect.width;
 561     const guint y1 = sink->display_rect.y;
 562     const guint rh = sink->display_rect.height / 5;
 563     GLfloat     ry = 1.0f - (GLfloat)rh / (GLfloat)sink->display_rect.height;
 564
 565     glBegin(GL_QUADS);
 566     {
 567         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 568         glTexCoord2f(0.0f, 1.0f); glVertex2i(x1, y1);
 569         glTexCoord2f(1.0f, 1.0f); glVertex2i(x2, y1);
 570
 571         glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
 572         glTexCoord2f(1.0f, ry); glVertex2i(x2, y1 + rh);
 573         glTexCoord2f(0.0f, ry); glVertex2i(x1, y1 + rh);
 574     }
 575     glEnd();
 576 }
 577
 578 static gboolean
 579 gst_vaapisink_show_frame_glx(
 580     GstVaapiSink    *sink,
 581     GstVaapiSurface *surface,
 582     guint            flags
 583 )
 584 {
 585     GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
 586     GLenum target;
 587     GLuint texture;
 588
 589     gst_vaapi_window_glx_make_current(window);
 590     if (!sink->texture) {
 591         sink->texture = gst_vaapi_texture_new(
 592             sink->display,
 593             GL_TEXTURE_2D,
 594             GL_BGRA,
 595             sink->video_width,
 596             sink->video_height
 597         );
 598         if (!sink->texture)
 599             goto error_create_texture;
 600     }
 601     if (!gst_vaapi_texture_put_surface(sink->texture, surface, flags))
 602         goto error_transfer_surface;
 603
 604     target  = gst_vaapi_texture_get_target(sink->texture);
 605     texture = gst_vaapi_texture_get_id(sink->texture);
 606     if (target != GL_TEXTURE_2D || !texture)
 607         return FALSE;
 608
 609     if (sink->use_reflection)
 610         render_background(sink);
 611
 612     glEnable(target);
 613     glBindTexture(target, texture);
 614     {
 615         if (sink->use_reflection) {
 616             glPushMatrix();
 617             glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
 618             glTranslatef(50.0f, 0.0f, 0.0f);
 619         }
 620         render_frame(sink);
 621         if (sink->use_reflection) {
 622             glPushMatrix();
 623             glTranslatef(0.0, (GLfloat)sink->display_rect.height + 5.0f, 0.0f);
 624             render_reflection(sink);
 625             glPopMatrix();
 626             glPopMatrix();
 627         }
 628     }
 629     glBindTexture(target, 0);
 630     glDisable(target);
 631     gst_vaapi_window_glx_swap_buffers(window);
 632     return TRUE;
 633
 634     /* ERRORS */
 635 error_create_texture:
 636     {
 637         GST_DEBUG("could not create VA/GLX texture");
 638         return FALSE;
 639     }
 640 error_transfer_surface:
 641     {
 642         GST_DEBUG("could not transfer VA surface to texture");
 643         return FALSE;
 644     }
 645 }
 646 #endif
 647
 648 static inline gboolean
 649 gst_vaapisink_show_frame_x11(
 650     GstVaapiSink    *sink,
 651     GstVaapiSurface *surface,
 652     guint            flags
 653 )
 654 {
 655     if (!gst_vaapi_window_put_surface(sink->window, surface,
 656                 NULL, &sink->display_rect, flags)) {
 657         GST_DEBUG("could not render VA surface");
 658         return FALSE;
 659     }
 660     return TRUE;
 661 }
 662
 663 static GstFlowReturn
 664 gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
 665 {
 666     GstVaapiSink * const sink = GST_VAAPISINK(base_sink);
 667     GstVaapiVideoBuffer * const vbuffer = GST_VAAPI_VIDEO_BUFFER(buffer);
 668     GstVaapiSurface *surface;
 669     guint flags;
 670     gboolean success;
 671     GstVideoOverlayComposition * const composition =
 672         gst_video_buffer_get_overlay_composition(buffer);
 673
 674     if (sink->display != gst_vaapi_video_buffer_get_display (vbuffer)) {
 675       g_clear_object(&sink->display);
 676       sink->display = g_object_ref (gst_vaapi_video_buffer_get_display (vbuffer));
 677     }
 678
 679     if (!sink->window)
 680         return GST_FLOW_UNEXPECTED;
 681
 682     surface = gst_vaapi_video_buffer_get_surface(vbuffer);
 683     if (!surface)
 684         return GST_FLOW_UNEXPECTED;
 685
 686     GST_DEBUG("render surface %" GST_VAAPI_ID_FORMAT,
 687               GST_VAAPI_ID_ARGS(gst_vaapi_surface_get_id(surface)));
 688
 689     flags = gst_vaapi_video_buffer_get_render_flags(vbuffer);
 690
 691     if (!gst_vaapi_surface_set_subpictures_from_composition(surface,
 692              composition, TRUE))
 693         GST_WARNING("could not update subtitles");
 694
 695 #if USE_VAAPISINK_GLX
 696     if (sink->use_glx)
 697         success = gst_vaapisink_show_frame_glx(sink, surface, flags);
 698     else
 699 #endif
 700         success = gst_vaapisink_show_frame_x11(sink, surface, flags);
 701     return success ? GST_FLOW_OK : GST_FLOW_UNEXPECTED;
 702 }
 703
 704 static gboolean
 705 gst_vaapisink_query(GstBaseSink *base_sink, GstQuery *query)
 706 {
 707     GstVaapiSink *sink = GST_VAAPISINK(base_sink);
 708     GST_DEBUG ("sharing display %p", sink->display);
 709     return gst_vaapi_reply_to_query (query, sink->display);
 710 }
 711
 712 static void
 713 gst_vaapisink_finalize(GObject *object)
 714 {
 715     gst_vaapisink_destroy(GST_VAAPISINK(object));
 716
 717     G_OBJECT_CLASS(gst_vaapisink_parent_class)->finalize(object);
 718 }
 719
 720 static void
 721 gst_vaapisink_set_property(
 722     GObject      *object,
 723     guint         prop_id,
 724     const GValue *value,
 725     GParamSpec   *pspec
 726 )
 727 {
 728     GstVaapiSink * const sink = GST_VAAPISINK(object);
 729
 730     switch (prop_id) {
 731     case PROP_USE_GLX:
 732         sink->use_glx = g_value_get_boolean(value);
 733         break;
 734     case PROP_FULLSCREEN:
 735         sink->fullscreen = g_value_get_boolean(value);
 736         break;
 737     case PROP_SYNCHRONOUS:
 738         sink->synchronous = g_value_get_boolean(value);
 739         break;
 740     case PROP_USE_REFLECTION:
 741         sink->use_reflection = g_value_get_boolean(value);
 742         break;
 743     default:
 744         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 745         break;
 746     }
 747 }
 748
 749 static void
 750 gst_vaapisink_get_property(
 751     GObject    *object,
 752     guint       prop_id,
 753     GValue     *value,
 754     GParamSpec *pspec
 755 )
 756 {
 757     GstVaapiSink * const sink = GST_VAAPISINK(object);
 758
 759     switch (prop_id) {
 760     case PROP_USE_GLX:
 761         g_value_set_boolean(value, sink->use_glx);
 762         break;
 763     case PROP_FULLSCREEN:
 764         g_value_set_boolean(value, sink->fullscreen);
 765         break;
 766     case PROP_SYNCHRONOUS:
 767         g_value_set_boolean(value, sink->synchronous);
 768         break;
 769     case PROP_USE_REFLECTION:
 770         g_value_set_boolean(value, sink->use_reflection);
 771         break;
 772     default:
 773         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 774         break;
 775     }
 776 }
 777
 778 static void
 779 gst_vaapisink_class_init(GstVaapiSinkClass *klass)
 780 {
 781     GObjectClass * const     object_class   = G_OBJECT_CLASS(klass);
 782     GstElementClass * const  element_class  = GST_ELEMENT_CLASS(klass);
 783     GstBaseSinkClass * const basesink_class = GST_BASE_SINK_CLASS(klass);
 784     GstPadTemplate *pad_template;
 785
 786     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapisink,
 787                             GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
 788
 789     object_class->finalize       = gst_vaapisink_finalize;
 790     object_class->set_property   = gst_vaapisink_set_property;
 791     object_class->get_property   = gst_vaapisink_get_property;
 792
 793     basesink_class->start        = gst_vaapisink_start;
 794     basesink_class->stop         = gst_vaapisink_stop;
 795     basesink_class->set_caps     = gst_vaapisink_set_caps;
 796     basesink_class->preroll      = gst_vaapisink_show_frame;
 797     basesink_class->render       = gst_vaapisink_show_frame;
 798     basesink_class->query        = gst_vaapisink_query;
 799
 800     gst_element_class_set_details_simple(
 801         element_class,
 802         gst_vaapisink_details.longname,
 803         gst_vaapisink_details.klass,
 804         gst_vaapisink_details.description,
 805         gst_vaapisink_details.author
 806     );
 807
 808     pad_template = gst_static_pad_template_get(&gst_vaapisink_sink_factory);
 809     gst_element_class_add_pad_template(element_class, pad_template);
 810     gst_object_unref(pad_template);
 811
 812 #if USE_VAAPISINK_GLX
 813     g_object_class_install_property
 814         (object_class,
 815          PROP_USE_GLX,
 816          g_param_spec_boolean("use-glx",
 817                               "GLX rendering",
 818                               "Enables GLX rendering",
 819                               TRUE,
 820                               G_PARAM_READWRITE));
 821
 822     g_object_class_install_property
 823         (object_class,
 824          PROP_USE_REFLECTION,
 825          g_param_spec_boolean("use-reflection",
 826                               "Reflection effect",
 827                               "Enables OpenGL reflection effect",
 828                               FALSE,
 829                               G_PARAM_READWRITE));
 830 #endif
 831
 832     g_object_class_install_property
 833         (object_class,
 834          PROP_FULLSCREEN,
 835          g_param_spec_boolean("fullscreen",
 836                               "Fullscreen",
 837                               "Requests window in fullscreen state",
 838                               FALSE,
 839                               G_PARAM_READWRITE));
 840
 841     /**
 842      * GstVaapiSink:synchronous:
 843      *
 844      * When enabled, runs the X display in synchronous mode. Note that
 845      * this is used only for debugging.
 846      */
 847     g_object_class_install_property
 848         (object_class,
 849          PROP_SYNCHRONOUS,
 850          g_param_spec_boolean("synchronous",
 851                               "Synchronous mode",
 852                               "Toggles X display synchronous mode",
 853                               FALSE,
 854                               G_PARAM_READWRITE));
 855 }
 856
 857 static void
 858 gst_vaapisink_init(GstVaapiSink *sink)
 859 {
 860     sink->caps           = NULL;
 861     sink->display        = NULL;
 862     sink->window         = NULL;
 863     sink->window_width   = 0;
 864     sink->window_height  = 0;
 865     sink->texture        = NULL;
 866     sink->video_width    = 0;
 867     sink->video_height   = 0;
 868     sink->video_par_n    = 1;
 869     sink->video_par_d    = 1;
 870     sink->foreign_window = FALSE;
 871     sink->fullscreen     = FALSE;
 872     sink->synchronous    = FALSE;
 873     sink->use_glx        = USE_VAAPISINK_GLX;
 874     sink->use_reflection = FALSE;
 875 }