Handle many more edge cases in dshowvideosink.

Instrument various codepaths with debug messages.
Handle (as best as I could see how - it's pretty nasty) moving a video
window to another monitor.
Add listening for directshow events.

1 files changed, 1616 insertions, 1549 deletions

diff --git a/sys/dshowvideosink/dshowvideosink.cpp b/sys/dshowvideosink/dshowvideosink.cpp
index 788dbdd5..0745921c 100644
--- a/sys/dshowvideosink/dshowvideosink.cpp
+++ b/sys/dshowvideosink/dshowvideosink.cpp
@@ -1,1549 +1,1616 @@
-/* GStreamer

- * Copyright (C) 2008 Pioneers of the Inevitable <songbird@songbirdnest.com>

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Library General Public

- * License as published by the Free Software Foundation; either

- * version 2 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Library General Public License for more details.

- *

- * You should have received a copy of the GNU Library General Public

- * License along with this library; if not, write to the

- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

- * Boston, MA 02111-1307, USA.

- */

-

-#ifdef HAVE_CONFIG_H

-#include "config.h"

-#endif

-

-#include "dshowvideosink.h"

-#include "dshowvideofakesrc.h"

-

-#include <gst/interfaces/xoverlay.h>

-

-#include "windows.h"

-

-static const GstElementDetails gst_dshowvideosink_details =

-GST_ELEMENT_DETAILS ("DirectShow video sink",

-    "Sink/Video",

-    "Display data using a DirectShow video renderer",

-    "Pioneers of the Inevitable <songbird@songbirdnest.com>");

-

-GST_DEBUG_CATEGORY_STATIC (dshowvideosink_debug);

-#define GST_CAT_DEFAULT dshowvideosink_debug

-

-static GstCaps * gst_directshow_media_type_to_caps (AM_MEDIA_TYPE *mediatype);

-static gboolean gst_caps_to_directshow_media_type (GstCaps *caps, AM_MEDIA_TYPE *mediatype);

-

-/* TODO: Support RGB! */

-static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",

-    GST_PAD_SINK,

-    GST_PAD_ALWAYS,

-    GST_STATIC_CAPS (

-        "video/x-raw-yuv,"

-        "width = (int) [ 1, MAX ],"

-        "height = (int) [ 1, MAX ],"

-        "framerate = (fraction) [ 0, MAX ]," 

-        "format = {(fourcc)YUY2, (fourcc)UYVY, (fourcc) YUVY, (fourcc)YV12 }")

-    );

-

-static void gst_dshowvideosink_init_interfaces (GType type);

-

-GST_BOILERPLATE_FULL (GstDshowVideoSink, gst_dshowvideosink, GstBaseSink,

-    GST_TYPE_BASE_SINK, gst_dshowvideosink_init_interfaces);

-

-enum

-{

-  PROP_0,

-  PROP_KEEP_ASPECT_RATIO,

-  PROP_FULL_SCREEN,

-  PROP_RENDERER

-};

-

-/* GObject methods */

-static void gst_dshowvideosink_finalize (GObject * gobject);

-static void gst_dshowvideosink_set_property (GObject * object, guint prop_id,

-    const GValue * value, GParamSpec * pspec);

-static void gst_dshowvideosink_get_property (GObject * object, guint prop_id,

-    GValue * value, GParamSpec * pspec);

-

-/* GstElement methods */

-static GstStateChangeReturn gst_dshowvideosink_change_state (GstElement * element, GstStateChange transition);

-

-/* GstBaseSink methods */

-static gboolean gst_dshowvideosink_start (GstBaseSink * bsink);

-static gboolean gst_dshowvideosink_stop (GstBaseSink * bsink);

-static gboolean gst_dshowvideosink_unlock (GstBaseSink * bsink);

-static gboolean gst_dshowvideosink_unlock_stop (GstBaseSink * bsink);

-static gboolean gst_dshowvideosink_set_caps (GstBaseSink * bsink, GstCaps * caps);

-static GstCaps *gst_dshowvideosink_get_caps (GstBaseSink * bsink);

-static GstFlowReturn gst_dshowvideosink_render (GstBaseSink *sink, GstBuffer *buffer);

-

-/* GstXOverlay methods */

-static void gst_dshowvideosink_set_window_id (GstXOverlay * overlay, ULONG window_id);

-

-/* TODO: event, preroll, buffer_alloc? 

- * buffer_alloc won't generally be all that useful because the renderers require a 

- * different stride to GStreamer's implicit values. 

- */

-

-static gboolean

-gst_dshowvideosink_interface_supported (GstImplementsInterface * iface,

-    GType type)

-{

-  g_assert (type == GST_TYPE_X_OVERLAY);

-  return TRUE;

-}

-

-static void

-gst_dshowvideosink_interface_init (GstImplementsInterfaceClass * klass)

-{

-  klass->supported = gst_dshowvideosink_interface_supported;

-}

-

-

-static void

-gst_dshowvideosink_xoverlay_interface_init (GstXOverlayClass * iface)

-{

-  iface->set_xwindow_id = gst_dshowvideosink_set_window_id;

-}

-

-static void

-gst_dshowvideosink_init_interfaces (GType type)

-{

-  static const GInterfaceInfo iface_info = {

-    (GInterfaceInitFunc) gst_dshowvideosink_interface_init,

-    NULL,

-    NULL,

-  };

-

-  static const GInterfaceInfo xoverlay_info = {

-    (GInterfaceInitFunc) gst_dshowvideosink_xoverlay_interface_init,

-    NULL,

-    NULL,

-  };

-

-  g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,

-      &iface_info);

-  g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &xoverlay_info);

-

-  GST_DEBUG_CATEGORY_INIT (dshowvideosink_debug, "dshowvideosink", 0, \

-      "DirectShow video sink");

-}

-static void

-gst_dshowvideosink_base_init (gpointer klass)

-{

-  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

-

-  gst_element_class_add_pad_template (element_class,

-      gst_static_pad_template_get (&sink_template));

-

-  gst_element_class_set_details (element_class, &gst_dshowvideosink_details);

-}

-

-static void

-gst_dshowvideosink_class_init (GstDshowVideoSinkClass * klass)

-{

-  GObjectClass *gobject_class;

-  GstElementClass *gstelement_class;

-  GstBaseSinkClass *gstbasesink_class;

-

-  gobject_class = (GObjectClass *) klass;

-  gstelement_class = (GstElementClass *) klass;

-  gstbasesink_class = (GstBaseSinkClass *) klass;

-

-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_dshowvideosink_finalize);

-  gobject_class->set_property =

-      GST_DEBUG_FUNCPTR (gst_dshowvideosink_set_property);

-  gobject_class->get_property =

-      GST_DEBUG_FUNCPTR (gst_dshowvideosink_get_property);

-

-  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dshowvideosink_change_state);

-

-  gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_dshowvideosink_get_caps);

-  gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_dshowvideosink_set_caps);

-  gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_dshowvideosink_start);

-  gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_dshowvideosink_stop);

-  gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_dshowvideosink_unlock);

-  gstbasesink_class->unlock_stop =

-      GST_DEBUG_FUNCPTR (gst_dshowvideosink_unlock_stop);

-  gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_dshowvideosink_render);

-

-  /* Add properties */

-  g_object_class_install_property (G_OBJECT_CLASS (klass),

-      PROP_KEEP_ASPECT_RATIO, g_param_spec_boolean ("force-aspect-ratio",

-          "Force aspect ratio",

-          "When enabled, scaling will respect original aspect ratio", FALSE,

-          (GParamFlags)G_PARAM_READWRITE));

-  g_object_class_install_property (G_OBJECT_CLASS (klass),

-      PROP_FULL_SCREEN, g_param_spec_boolean ("fullscreen",

-          "Full screen mode",

-          "Use full-screen mode (not available when using XOverlay)", FALSE,

-          (GParamFlags)G_PARAM_READWRITE));

-

-  g_object_class_install_property (G_OBJECT_CLASS (klass),

-      PROP_RENDERER, g_param_spec_string ("renderer", "Renderer", 

-      "Force usage of specific DirectShow renderer (VMR9 or VMR)",

-      NULL, (GParamFlags)G_PARAM_READWRITE));

-}

-

-static void

-gst_dshowvideosink_clear (GstDshowVideoSink *sink)

-{

-  sink->renderersupport = NULL;

-  sink->fakesrc = NULL;

-  sink->filter_graph = NULL;

-

-  sink->keep_aspect_ratio = FALSE;

-  sink->full_screen = FALSE;

-

-  sink->window_closed = FALSE;

-  sink->window_id = NULL;

-

-  sink->connected = FALSE;

-}

-

-static void

-gst_dshowvideosink_init (GstDshowVideoSink * sink, GstDshowVideoSinkClass * klass)

-{

-  HRESULT hr;

-

-  gst_dshowvideosink_clear (sink);

-

-  hr = CoInitialize (0);

-  if (SUCCEEDED(hr))

-    sink->comInitialized = TRUE;

-

-  /* TODO: Copied from GstVideoSink; should we use that as base class? */

-  /* 20ms is more than enough, 80-130ms is noticable */

-  gst_base_sink_set_max_lateness (GST_BASE_SINK (sink), 20 * GST_MSECOND);

-  gst_base_sink_set_qos_enabled (GST_BASE_SINK (sink), TRUE);

-}

-

-static void

-gst_dshowvideosink_finalize (GObject * gobject)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (gobject);

-

-  if (sink->preferredrenderer)

-    g_free (sink->preferredrenderer);

-

-  if (sink->comInitialized) {

-    CoUninitialize ();

-    sink->comInitialized = FALSE;

-  }

-

-  G_OBJECT_CLASS (parent_class)->finalize (gobject);

-}

-

-static void

-gst_dshowvideosink_set_property (GObject * object, guint prop_id,

-    const GValue * value, GParamSpec * pspec)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (object);

-

-  switch (prop_id) {

-    case PROP_RENDERER:

-      if (sink->preferredrenderer)

-        g_free (sink->preferredrenderer);

-

-      sink->preferredrenderer = g_value_dup_string (value);

-      break;

-    case PROP_KEEP_ASPECT_RATIO:

-      sink->keep_aspect_ratio = g_value_get_boolean (value);

-      break;

-    case PROP_FULL_SCREEN:

-      sink->full_screen = g_value_get_boolean (value);

-      break;

-    default:

-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

-      break;

-  }

-}

-

-static void

-gst_dshowvideosink_get_property (GObject * object, guint prop_id,

-    GValue * value, GParamSpec * pspec)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (object);

-

-  switch (prop_id) {

-    case PROP_RENDERER:

-      g_value_take_string (value, sink->preferredrenderer);

-      break;

-    case PROP_KEEP_ASPECT_RATIO:

-      g_value_set_boolean (value, sink->keep_aspect_ratio);

-      break;

-    case PROP_FULL_SCREEN:

-      g_value_set_boolean (value, sink->full_screen);

-      break;

-    default:

-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

-      break;

-  }

-}

-

-static GstCaps *

-gst_dshowvideosink_get_caps (GstBaseSink * basesink)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (basesink);

-

-  return NULL;

-}

-

-static void dump_available_media_types (IPin *pin)

-{

-  /* Enumerate all media types on this pin, output info about them */

-  IEnumMediaTypes *enumerator = NULL;

-  AM_MEDIA_TYPE *type;

-  GstCaps *caps;

-  int i = 0;

-

-  GST_INFO ("Enumerating media types on pin %p", pin);

-

-  pin->EnumMediaTypes (&enumerator);

-

-  while (enumerator->Next (1, &type, NULL) == S_OK) {

-    i++;

-    caps = gst_directshow_media_type_to_caps (type);

-

-    if (caps) {

-      gchar *str = gst_caps_to_string (caps);

-      GST_INFO ("Type %d: converted to caps \"%s\"", i, str);

-      g_free (str);

-

-      gst_caps_unref (caps);

-    }

-    else

-      GST_INFO ("Failed to convert type to GstCaps");

-

-    DeleteMediaType (type);

-  }

-  GST_INFO ("Enumeration complete");

-

-  enumerator->Release();

-}

-

-static void

-dump_all_pin_media_types (IBaseFilter *filter)

-{

-  IEnumPins *enumpins = NULL;

-  IPin *pin = NULL;

-  HRESULT hres; 

-

-  hres = filter->EnumPins (&enumpins);

-  if (FAILED(hres)) {

-    GST_WARNING ("Cannot enumerate pins on filter");

-    return;

-  }

-

-  GST_INFO ("Enumerating pins on filter %p", filter);

-  while (enumpins->Next (1, &pin, NULL) == S_OK)

-  {

-    IMemInputPin *meminputpin;

-    PIN_DIRECTION pindir;

-    hres = pin->QueryDirection (&pindir);

-

-    GST_INFO ("Found a pin with direction: %s", (pindir == PINDIR_INPUT)? "input": "output");

-    dump_available_media_types (pin);

-

-    hres = pin->QueryInterface (

-            IID_IMemInputPin, (void **) &meminputpin);

-    if (hres == S_OK) {

-      GST_INFO ("Pin is a MemInputPin (push mode): %p", meminputpin);

-      meminputpin->Release();

-    }

-    else

-      GST_INFO ("Pin is not a MemInputPin (pull mode?): %p", pin);

-

-    pin->Release();

-  }

-  enumpins->Release();

-}

-

-gboolean 

-gst_dshow_get_pin_from_filter (IBaseFilter *filter, PIN_DIRECTION pindir, IPin **pin)

-{

-  gboolean ret = FALSE;

-  IEnumPins *enumpins = NULL;

-  IPin *pintmp = NULL;

-  HRESULT hres; 

-  *pin = NULL;

-

-  hres = filter->EnumPins (&enumpins);

-  if (FAILED(hres)) {

-    return ret;

-  }

-

-  while (enumpins->Next (1, &pintmp, NULL) == S_OK)

-  {

-    PIN_DIRECTION pindirtmp;

-    hres = pintmp->QueryDirection (&pindirtmp);

-    if (hres == S_OK && pindir == pindirtmp) {

-      *pin = pintmp;

-      ret = TRUE;

-      break;

-    }

-    pintmp->Release ();

-  }

-  enumpins->Release ();

-

-  return ret;

-}

-

-/* WNDPROC for application-supplied windows */

-LRESULT APIENTRY WndProcHook (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

-{

-  /* Handle certain actions specially on the window passed to us.

-   * Then forward back to the original window.

-   */

-  GstDshowVideoSink *sink = (GstDshowVideoSink *)GetProp (hWnd, L"GstDShowVideoSink");

-

-  switch (message) {

-    case WM_PAINT:

-      sink->renderersupport->PaintWindow ();

-      break;

-    case WM_MOVE:

-    case WM_SIZE:

-      sink->renderersupport->MoveWindow ();

-      break;

-    case WM_DISPLAYCHANGE:

-      sink->renderersupport->DisplayModeChanged();

-      break;

-    case WM_ERASEBKGND:

-      /* DirectShow docs recommend ignoring this message to avoid flicker */

-      return TRUE;

-    case WM_CLOSE:

-      sink->window_closed = TRUE;

-  }

-  return CallWindowProc (sink->prevWndProc, hWnd, message, wParam, lParam);

-}

-

-/* WndProc for our default window, if the application didn't supply one */

-LRESULT APIENTRY 

-WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

-{

-  GstDshowVideoSink *sink = (GstDshowVideoSink *)GetWindowLongPtr (hWnd, GWLP_USERDATA);

-

-  if (!sink) {

-    /* I think these happen before we have a chance to set our userdata pointer */

-    GST_DEBUG ("No sink!");

-    return DefWindowProc (hWnd, message, wParam, lParam);

-  }

-

-  GST_DEBUG_OBJECT (sink, "Got a window message for %x, %x", hWnd, message);

-

-  switch (message) {

-    case WM_PAINT:

-      sink->renderersupport->PaintWindow ();

-      break;

-    case WM_MOVE:

-    case WM_SIZE:

-      sink->renderersupport->MoveWindow ();

-      break;

-    case WM_DISPLAYCHANGE:

-      sink->renderersupport->DisplayModeChanged();

-      break;

-    case WM_ERASEBKGND:

-      /* DirectShow docs recommend ignoring this message */

-      return TRUE;

-    case WM_CLOSE:

-      sink->renderersupport->DestroyWindow ();

-      sink->window_closed = TRUE;

-      return 0;

-  }

-

-  return DefWindowProc (hWnd, message, wParam, lParam);

-}

-

-static gpointer

-gst_dshowvideosink_window_thread (GstDshowVideoSink * sink)

-{

-  WNDCLASS WndClass;

-  int width, height;

-  int offx, offy;

-  DWORD exstyle, style;

-

-  memset (&WndClass, 0, sizeof (WNDCLASS));

-  WndClass.style = CS_HREDRAW | CS_VREDRAW;

-  WndClass.hInstance = GetModuleHandle (NULL);

-  WndClass.lpszClassName = L"GST-DShowSink";

-  WndClass.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);

-  WndClass.cbClsExtra = 0;

-  WndClass.cbWndExtra = 0;

-  WndClass.lpfnWndProc = WndProc;

-  WndClass.hCursor = LoadCursor (NULL, IDC_ARROW);

-  RegisterClass (&WndClass);

-

-  if (sink->full_screen) {

-    /* This doesn't seem to work, it returns the wrong values! But when we

-     * later use ShowWindow to show it maximized, it goes to full-screen

-     * anyway. TODO: Figure out why. */

-    width = GetSystemMetrics (SM_CXFULLSCREEN);

-    height = GetSystemMetrics (SM_CYFULLSCREEN);

-    offx = 0;

-    offy = 0;

-

-    style = WS_POPUP; /* No window decorations */

-    exstyle = 0;

-  }

-  else {

-    /* By default, create a normal top-level window, the size 

-     * of the video.

-     */

-    RECT rect;

-    VIDEOINFOHEADER *vi = (VIDEOINFOHEADER *)sink->mediatype.pbFormat;

-

-    /* rcTarget is the aspect-ratio-corrected size of the video. */

-    width = vi->rcTarget.right + GetSystemMetrics (SM_CXSIZEFRAME) * 2;

-    height = vi->rcTarget.bottom + GetSystemMetrics (SM_CYCAPTION) +

-        (GetSystemMetrics (SM_CYSIZEFRAME) * 2);

-

-    SystemParametersInfo (SPI_GETWORKAREA, NULL, &rect, 0);

-    int screenwidth = rect.right - rect.left;

-    int screenheight = rect.bottom - rect.top;

-    offx = rect.left;

-    offy = rect.top;

-

-    /* Make it fit into the screen without changing the

-     * aspect ratio. */

-    if (width > screenwidth) {

-      double ratio = (double)screenwidth/(double)width;

-      width = screenwidth;

-      height = (int)(height * ratio);

-    }

-    if (height > screenheight) {

-      double ratio = (double)screenheight/(double)height;

-      height = screenheight;

-      width = (int)(width * ratio);

-    }

-

-    style = WS_OVERLAPPEDWINDOW; /* Normal top-level window */

-    exstyle = 0;

-  }

-

-  HWND video_window = CreateWindowEx (exstyle, L"GST-DShowSink",

-      L"GStreamer DirectShow sink default window",

-      style, offx, offy, width, height, NULL, NULL,

-      WndClass.hInstance, NULL);

-  if (video_window == NULL) {

-    GST_ERROR_OBJECT (sink, "Failed to create window!");

-    return NULL;

-  }

-

-  SetWindowLongPtr (video_window, GWLP_USERDATA, (LONG)sink);

-

-  /* signal application we created a window */

-  gst_x_overlay_got_xwindow_id (GST_X_OVERLAY (sink),

-      (gulong)video_window);

-

-  /* Set the renderer's clipping window */

-  if (!sink->renderersupport->SetRendererWindow (video_window)) {

-    GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p", sink->renderersupport);

-  }

-

-  /* Now show the window, as appropriate */

-  if (sink->full_screen) {

-    ShowWindow (video_window, SW_SHOWMAXIMIZED);

-    ShowCursor (FALSE);

-  }

-  else

-    ShowWindow (video_window, SW_SHOWNORMAL);

-

-  /* Trigger the initial paint of the window */

-  UpdateWindow (video_window);

-

-  ReleaseSemaphore (sink->window_created_signal, 1, NULL);

-

-  /* start message loop processing our default window messages */

-  while (1) {

-    MSG msg;

-

-    if (GetMessage (&msg, video_window, 0, 0) <= 0) {

-      GST_LOG_OBJECT (sink, "our window received WM_QUIT or error.");

-      break;

-    }

-    DispatchMessage (&msg);

-  }

-

-  return NULL;

-}

-

-static gboolean

-gst_dshowvideosink_create_default_window (GstDshowVideoSink * sink)

-{

-  sink->window_created_signal = CreateSemaphore (NULL, 0, 1, NULL);

-  if (sink->window_created_signal == NULL)

-    goto failed;

-

-  sink->window_thread = g_thread_create (

-      (GThreadFunc) gst_dshowvideosink_window_thread, sink, TRUE, NULL);

-

-  /* wait maximum 10 seconds for window to be created */

-  if (WaitForSingleObject (sink->window_created_signal,

-          10000) != WAIT_OBJECT_0)

-    goto failed;

-

-  CloseHandle (sink->window_created_signal);

-  return TRUE;

-

-failed:

-  CloseHandle (sink->window_created_signal);

-  GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,

-      ("Error creating our default window"), (NULL));

-

-  return FALSE;

-}

-

-static void gst_dshowvideosink_set_window_id (GstXOverlay * overlay, ULONG window_id)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (overlay);

-  HWND videowindow = (HWND)window_id;

-

-  if (videowindow == sink->window_id) {

-    GST_DEBUG_OBJECT (sink, "Window already set");

-    return;

-  }

-

-  /* TODO: What if we already have a window? What if we're already playing? */

-  sink->window_id = videowindow;

-}

-

-static void gst_dshowvideosink_set_window_for_renderer (GstDshowVideoSink *sink)

-{

-  /* Application has requested a specific window ID */

-  sink->prevWndProc = (WNDPROC) SetWindowLong (sink->window_id, GWL_WNDPROC, (LONG)WndProcHook);

-  GST_DEBUG_OBJECT (sink, "Set wndproc to %p from %p", WndProcHook, sink->prevWndProc);

-  SetProp (sink->window_id, L"GstDShowVideoSink", sink);

-  /* This causes the new WNDPROC to become active */

-  SetWindowPos (sink->window_id, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);

-

-  if (!sink->renderersupport->SetRendererWindow (sink->window_id)) {

-    GST_WARNING_OBJECT (sink, "Failed to set HWND %x on renderer", sink->window_id);

-    return;

-  }

-

-  /* This tells the renderer where the window is located, needed to 

-   * start drawing in the right place.  */

-  sink->renderersupport->MoveWindow();

-  GST_INFO_OBJECT (sink, "Set renderer window to %x", sink->window_id);

-}

-

-static void

-gst_dshowvideosink_prepare_window (GstDshowVideoSink *sink)

-{

-  /* Give the app a last chance to supply a window id */

-  if (!sink->window_id) {

-    gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (sink));

-  }

-

-  /* If the app supplied one, use it. Otherwise, go ahead

-   * and create (and use) our own window */

-  if (sink->window_id) {

-    gst_dshowvideosink_set_window_for_renderer (sink);

-  }

-  else {

-    gst_dshowvideosink_create_default_window (sink);

-  }

-}

-

-static gboolean

-gst_dshowvideosink_connect_graph (GstDshowVideoSink *sink)

-{

-  HRESULT hres;

-  IPin *srcpin;

-  IPin *sinkpin;

-

-  GST_INFO_OBJECT (sink, "Connecting DirectShow pins");

-

-  srcpin = sink->fakesrc->GetOutputPin();

-

-  gst_dshow_get_pin_from_filter (sink->renderersupport->GetFilter(), PINDIR_INPUT, 

-      &sinkpin);

-  if (!sinkpin) {

-    GST_WARNING_OBJECT (sink, "Cannot get input pin from Renderer");

-    return FALSE;

-  }

-

-  /* Be warned that this call WILL deadlock unless you call it from

-   * the main thread. Thus, we call this from the state change, not from

-   * setcaps (which happens in a streaming thread).

-   */

-  hres = sink->filter_graph->ConnectDirect (

-           srcpin, sinkpin, NULL);

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink, "Could not connect pins: %x", hres);

-    sinkpin->Release();

-    return FALSE;

-  }

-  sinkpin->Release();

-  return TRUE;

-}

-

-static GstStateChangeReturn

-gst_dshowvideosink_start_graph (GstDshowVideoSink *sink)

-{

-  IMediaControl *control = NULL;

-  HRESULT hres;

-  GstStateChangeReturn ret;

-

-  GST_DEBUG_OBJECT (sink, "Connecting and starting DirectShow graph");

-

-  if (!sink->connected) {

-    /* This is fine; this just means we haven't connected yet.

-     * That's normal for the first time this is called. 

-     * So, create a window (or start using an application-supplied

-     * one, then connect the graph */

-    gst_dshowvideosink_prepare_window (sink);

-    if (!gst_dshowvideosink_connect_graph (sink)) {

-      ret = GST_STATE_CHANGE_FAILURE;

-      goto done;

-    }

-    sink->connected = TRUE;

-  }

-

-  hres = sink->filter_graph->QueryInterface(

-          IID_IMediaControl, (void **) &control);

-

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-

-  GST_INFO_OBJECT (sink, "Running DirectShow graph");

-  hres = control->Run();

-  if (FAILED (hres)) {

-    GST_ERROR_OBJECT (sink,

-        "Failed to run the directshow graph (error=%x)", hres);

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-  

-  GST_DEBUG_OBJECT (sink, "DirectShow graph is now running");

-  ret = GST_STATE_CHANGE_SUCCESS;

-

-done:

-  if (control)

-    control->Release();

-

-  return ret;

-}

-static GstStateChangeReturn

-gst_dshowvideosink_pause_graph (GstDshowVideoSink *sink)

-{

-  IMediaControl *control = NULL;

-  GstStateChangeReturn ret;

-  HRESULT hres;

-

-  hres = sink->filter_graph->QueryInterface(

-          IID_IMediaControl, (void **) &control);

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-

-  GST_INFO_OBJECT (sink, "Pausing DirectShow graph");

-  hres = control->Pause();

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink,

-        "Can't pause the directshow graph (error=%x)", hres);

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-

-  ret = GST_STATE_CHANGE_SUCCESS;

-

-done:

-  if (control)

-    control->Release();

-

-  return ret;

-}

-

-static GstStateChangeReturn

-gst_dshowvideosink_stop_graph (GstDshowVideoSink *sink)

-{

-  IMediaControl *control = NULL;

-  GstStateChangeReturn ret;

-  HRESULT hres;

-  IPin *sinkpin;

-

-  hres = sink->filter_graph->QueryInterface(

-          IID_IMediaControl, (void **) &control);

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-

-  GST_INFO_OBJECT (sink, "Stopping DirectShow graph");

-  hres = control->Stop();

-  if (FAILED (hres)) {

-    GST_WARNING_OBJECT (sink,

-        "Can't stop the directshow graph (error=%x)", hres);

-    ret = GST_STATE_CHANGE_FAILURE;

-    goto done;

-  }

-

-  sink->filter_graph->Disconnect(sink->fakesrc->GetOutputPin());

-

-  gst_dshow_get_pin_from_filter (sink->renderersupport->GetFilter(), PINDIR_INPUT, 

-      &sinkpin);

-  sink->filter_graph->Disconnect(sinkpin);

-  sinkpin->Release();

-

-  GST_DEBUG_OBJECT (sink, "DirectShow graph has stopped");

-

-  if (sink->window_id) {

-    /* Return control of application window */

-    SetWindowLong (sink->window_id, GWL_WNDPROC, (LONG)sink->prevWndProc);

-    RemoveProp (sink->window_id, L"GstDShowVideoSink");

-    SetWindowPos (sink->window_id, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);

-    sink->prevWndProc = NULL;

-  }

-  sink->connected = FALSE;

-

-  ret = GST_STATE_CHANGE_SUCCESS;

-

-done:

-  if (control)

-    control->Release();

-

-  return ret;

-}

-

-static GstStateChangeReturn

-gst_dshowvideosink_change_state (GstElement * element, GstStateChange transition)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (element);

-  GstStateChangeReturn ret;

-

-  switch (transition) {

-    case GST_STATE_CHANGE_NULL_TO_READY:

-      break;

-    case GST_STATE_CHANGE_READY_TO_PAUSED:

-      break;

-    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:

-      ret = gst_dshowvideosink_start_graph (sink);

-      if (ret != GST_STATE_CHANGE_SUCCESS)

-        return ret;

-      break;

-  }

-

-  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

-

-  switch (transition) {

-    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:

-      ret = gst_dshowvideosink_pause_graph (sink);

-      break;

-    case GST_STATE_CHANGE_PAUSED_TO_READY:

-      ret = gst_dshowvideosink_stop_graph (sink);

-      break;

-    case GST_STATE_CHANGE_READY_TO_NULL:

-      gst_dshowvideosink_clear (sink);

-      break;

-  }

-

-  return ret;

-}

-

-class VMR9Support : public RendererSupport

-{

-private:

-  GstDshowVideoSink *sink;

-  IBaseFilter *filter;

-  IVMRWindowlessControl9 *control;

-  IVMRFilterConfig9 *config;

-  HWND video_window;

-

-public:

-  VMR9Support (GstDshowVideoSink *sink) : 

-      sink(sink), 

-      filter(NULL),

-      control(NULL),

-      config(NULL)

-  {

-  }

-

-  ~VMR9Support() {

-    if (control)

-      control->Release();

-    if (config)

-      config->Release();

-    if (filter)

-      filter->Release();

-  }

-

-  const char *GetName() {

-    return "VideoMixingRenderer9";

-  }

-

-  IBaseFilter *GetFilter() {

-    return filter;

-  }

-

-  gboolean Configure() {

-    HRESULT hres;

-

-    hres = CoCreateInstance (CLSID_VideoMixingRenderer9, NULL, CLSCTX_INPROC,

-        IID_IBaseFilter, (LPVOID *) &filter);

-    if (FAILED (hres)) {

-      GST_ERROR_OBJECT (sink, 

-          "Can't create an instance of renderer (error=%x)",

-          hres);

-      return FALSE;

-    }

-

-    hres = filter->QueryInterface (

-          IID_IVMRFilterConfig9, (void **) &config);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR9 filter config interface missing: %x", hres);

-      return FALSE;

-    }

-

-    hres = config->SetRenderingMode (VMR9Mode_Windowless);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR9 couldn't be set to windowless mode: %x", hres);

-      return FALSE;

-    }

-    else {

-      GST_DEBUG_OBJECT (sink, "Set VMR9 (%p) to windowless mode!", filter);

-    }

-

-    /* We can't QI to this until _after_ we've been set to windowless mode. 

-     * Apparently this is against the rules in COM, but that's how it is... */

-    hres = filter->QueryInterface (

-          IID_IVMRWindowlessControl9, (void **) &control);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR9 windowless control interface missing: %x", hres);

-      return FALSE;

-    }

-

-    if (sink->keep_aspect_ratio) {

-      control->SetAspectRatioMode(VMR9ARMode_LetterBox);

-    }

-    else {

-      control->SetAspectRatioMode(VMR9ARMode_None);

-    }

-    return TRUE;

-  }

-

-  gboolean SetRendererWindow(HWND window) {

-    video_window = window;

-    HRESULT hres = control->SetVideoClippingWindow (video_window);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p: %x", filter, hres);

-      return FALSE;

-    }

-    return TRUE;

-  }

-

-  void PaintWindow()

-  {

-    HRESULT hr;

-    PAINTSTRUCT ps;

-    HDC         hdc;

-    RECT        rcClient;

-

-    GetClientRect(video_window, &rcClient);

-    hdc = BeginPaint(video_window, &ps);

-

-    hr = control->RepaintVideo(video_window, hdc);

-

-    EndPaint(video_window, &ps);

-  }

-

-  void MoveWindow()

-  {

-    HRESULT hr;

-    RECT rect;

-

-    // Track the movement of the container window and resize as needed

-    GetClientRect(video_window, &rect);

-    hr = control->SetVideoPosition(NULL, &rect);

-  }

-

-  void DisplayModeChanged() {

-    control->DisplayModeChanged();

-  }

-

-  void DestroyWindow() {

-    ::DestroyWindow (video_window);

-  }

-};

-

-class VMR7Support : public RendererSupport

-{

-private:

-  GstDshowVideoSink *sink;

-  IBaseFilter *filter;

-  IVMRWindowlessControl *control;

-  IVMRFilterConfig *config;

-  HWND video_window;

-

-public:

-  VMR7Support (GstDshowVideoSink *sink) : 

-      sink(sink), 

-      filter(NULL),

-      control(NULL),

-      config(NULL)

-  {

-  }

-

-  ~VMR7Support() {

-    if (control)

-      control->Release();

-    if (config)

-      config->Release();

-    if (filter)

-      filter->Release();

-  }

-

-  const char *GetName() {

-    return "VideoMixingRenderer";

-  }

-

-  IBaseFilter *GetFilter() {

-    return filter;

-  }

-

-  gboolean Configure() {

-    HRESULT hres;

-

-    hres = CoCreateInstance (CLSID_VideoMixingRenderer, NULL, CLSCTX_INPROC,

-        IID_IBaseFilter, (LPVOID *) &filter);

-    if (FAILED (hres)) {

-      GST_ERROR_OBJECT (sink, 

-          "Can't create an instance of renderer (error=%x)",

-          hres);

-      return FALSE;

-    }

-

-    hres = filter->QueryInterface (

-          IID_IVMRFilterConfig, (void **) &config);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR filter config interface missing: %x", hres);

-      return FALSE;

-    }

-

-    hres = config->SetRenderingMode (VMRMode_Windowless);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR couldn't be set to windowless mode: %x", hres);

-      return FALSE;

-    }

-    else {

-      GST_DEBUG_OBJECT (sink, "Set VMR (%p) to windowless mode!", filter);

-    }

-

-    hres = filter->QueryInterface (

-          IID_IVMRWindowlessControl, (void **) &control);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "VMR windowless control interface missing: %x", hres);

-      return FALSE;

-    }

-

-    if (sink->keep_aspect_ratio) {

-      control->SetAspectRatioMode(VMR_ARMODE_LETTER_BOX);

-    }

-    else {

-      control->SetAspectRatioMode(VMR_ARMODE_NONE);

-    }

-    return TRUE;

-  }

-

-  gboolean SetRendererWindow(HWND window) {

-    video_window = window;

-    HRESULT hres = control->SetVideoClippingWindow (video_window);

-    if (FAILED (hres)) {

-      GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p: %x", filter, hres);

-      return FALSE;

-    }

-    return TRUE;

-  }

-

-  void PaintWindow()

-  {

-    HRESULT hr;

-    PAINTSTRUCT ps;

-    HDC         hdc;

-    RECT        rcClient;

-

-    GetClientRect(video_window, &rcClient);

-    hdc = BeginPaint(video_window, &ps);

-

-    hr = control->RepaintVideo(video_window, hdc);

-

-    EndPaint(video_window, &ps);

-  }

-

-  void MoveWindow()

-  {

-    HRESULT hr;

-    RECT rect;

-

-    // Track the movement of the container window and resize as needed

-    GetClientRect(video_window, &rect);

-    hr = control->SetVideoPosition(NULL, &rect);

-  }

-

-  void DisplayModeChanged() {

-    control->DisplayModeChanged();

-  }

-

-  void DestroyWindow() {

-    ::DestroyWindow (video_window);

-  }

-};

-

-static gboolean 

-gst_dshowvideosink_create_renderer (GstDshowVideoSink *sink) 

-{

-  GST_DEBUG_OBJECT (sink, "Trying to create renderer '%s'", "VMR9");

-

-  RendererSupport *support = NULL;

-

-  if (sink->preferredrenderer) {

-    if (!strcmp (sink->preferredrenderer, "VMR9")) {

-      GST_INFO_OBJECT (sink, "Forcing use of VMR9");

-      support = new VMR9Support (sink);

-    }

-    else if (!strcmp (sink->preferredrenderer, "VMR")) {

-      GST_INFO_OBJECT (sink, "Forcing use of VMR");

-      support = new VMR7Support (sink);

-    }

-    else {

-      GST_ERROR_OBJECT (sink, "Unknown sink type '%s'", sink->preferredrenderer);

-      return FALSE;

-    }

-

-    if (!support->Configure()) {

-      GST_ERROR_OBJECT (sink, "Couldn't configure selected renderer");

-      delete support;

-      return FALSE;

-    }

-    goto done;

-  }

-

-  support = new VMR9Support (sink);

-  if (!support->Configure()) {

-    GST_INFO_OBJECT (sink, "Failed to configure VMR9, trying VMR7");

-    delete support;

-    support = new VMR7Support (sink);

-    if (!support->Configure()) {

-      GST_ERROR_OBJECT (sink, "Failed to configure VMR9 or VMR7");

-      delete support;

-      return FALSE;

-    }

-  }

-

-done:

-  sink->renderersupport = support;

-  return TRUE;

-}

-

-static gboolean

-gst_dshowvideosink_build_filtergraph (GstDshowVideoSink *sink)

-{

-  HRESULT hres;

-

-  /* Build our DirectShow FilterGraph, looking like: 

-   *

-   *    [ fakesrc ] -> [ sink filter ]

-   *

-   * so we can feed data in through the fakesrc.

-   *

-   * The sink filter can be one of our supported filters: VMR9 (VMR7?, EMR?)

-   */

-

-  hres = CoCreateInstance (CLSID_FilterGraph, NULL, CLSCTX_INPROC,

-      IID_IFilterGraph, (LPVOID *) & sink->filter_graph);

-  if (FAILED (hres)) {

-    GST_ERROR_OBJECT (sink, 

-          "Can't create an instance of the dshow graph manager (error=%x)", hres);

-    goto error;

-  }

-

-  sink->fakesrc = new VideoFakeSrc();

-

-  IBaseFilter *filter;

-  hres = sink->fakesrc->QueryInterface (

-          IID_IBaseFilter, (void **) &filter);

-  if (FAILED (hres)) {

-    GST_ERROR_OBJECT (sink, "Could not QI fakesrc to IBaseFilter");

-    goto error;

-  }

-

-  hres = sink->filter_graph->AddFilter (filter, L"fakesrc");

-  if (FAILED (hres)) {

-    GST_ERROR_OBJECT (sink,

-        "Can't add our fakesrc filter to the graph (error=%x)", hres);

-    goto error;

-  }

-

-  if (!gst_dshowvideosink_create_renderer (sink)) {

-    GST_ERROR_OBJECT (sink, "Could not create a video renderer");

-    goto error;

-  }

-

-  /* dump_all_pin_media_types (sink->renderer); */

-

-  hres =

-      sink->filter_graph->AddFilter (sink->renderersupport->GetFilter(),

-      L"renderer");

-  if (FAILED (hres)) {

-    GST_ERROR_OBJECT (sink, 

-          "Can't add renderer to the graph (error=%x)", hres);

-    goto error;

-  }

-

-  return TRUE;

-

-error:

-  if (sink->fakesrc) {

-    sink->fakesrc->Release();

-    sink->fakesrc = NULL;

-  }

-

-  if (sink->filter_graph) {

-    sink->filter_graph->Release();

-    sink->filter_graph = NULL;

-  }

-

-  return FALSE;

-}

-

-static gboolean

-gst_dshowvideosink_start (GstBaseSink * bsink)

-{

-  HRESULT hres = S_FALSE;

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-

-  /* Just build the filtergraph; we don't link or otherwise configure it yet */

-  return gst_dshowvideosink_build_filtergraph (sink);

-}

-

-static gboolean

-gst_dshowvideosink_set_caps (GstBaseSink * bsink, GstCaps * caps)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-

-  /* TODO: What do we want to do if the caps change while we're running?

-   * Find out if we can handle this or not... */

-

-  if (!gst_caps_to_directshow_media_type (caps, &sink->mediatype)) {

-    GST_WARNING_OBJECT (sink, "Cannot convert caps to AM_MEDIA_TYPE, rejecting");

-    return FALSE;

-  }

-

-  /* Now we have an AM_MEDIA_TYPE describing what we're going to send.

-   * We set this on our DirectShow fakesrc's output pin. 

-   */

-  sink->fakesrc->GetOutputPin()->SetMediaType (&sink->mediatype);

-

-  return TRUE;

-}

-

-static gboolean

-gst_dshowvideosink_stop (GstBaseSink * bsink)

-{

-  IPin *input_pin = NULL, *output_pin = NULL;

-  HRESULT hres = S_FALSE;

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-

-  if (!sink->filter_graph) {

-    GST_WARNING_OBJECT (sink, "Cannot destroy filter graph; it doesn't exist");

-    return TRUE;

-  }

-

-  /* Release the renderer */

-  if (sink->renderersupport) {

-    delete sink->renderersupport;

-    sink->renderersupport = NULL;

-  }

-

-  /* Release our dshow fakesrc */

-  if (sink->fakesrc) {

-    sink->fakesrc->Release();

-    sink->fakesrc = NULL;

-  }

-

-  /* Release the filter graph manager */

-  if (sink->filter_graph) {

-    sink->filter_graph->Release();

-    sink->filter_graph = NULL;

-  }

-

-  return TRUE;

-}

-

-static GstFlowReturn 

-gst_dshowvideosink_render (GstBaseSink *bsink, GstBuffer *buffer)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-  GstFlowReturn ret;

-

-  if (sink->window_closed) {

-    GST_WARNING_OBJECT (sink, "Window has been closed, stopping");

-    return GST_FLOW_ERROR;

-  }

-

-  GST_DEBUG_OBJECT (sink, "Pushing buffer through fakesrc->renderer");

-  ret = sink->fakesrc->GetOutputPin()->PushBuffer (buffer);

-  GST_DEBUG_OBJECT (sink, "Done pushing buffer through fakesrc->renderer");

-

-  return ret;

-}

-

-/* TODO: How can we implement these? Figure that out... */

-static gboolean

-gst_dshowvideosink_unlock (GstBaseSink * bsink)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-

-  return TRUE;

-}

-

-static gboolean

-gst_dshowvideosink_unlock_stop (GstBaseSink * bsink)

-{

-  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);

-

-  return TRUE;

-}

-

-/* TODO: Move all of this into generic code? */

-

-/* Helpers to format GUIDs the same way we find them in the source */

-#define GUID_FORMAT "{%.8x, %.4x, %.4x, { %.2x, %.2x, %.2x, %.2x, %.2x, %.2x, %.2x, %.2x }}"

-#define GUID_ARGS(guid) \

-    guid.Data1, guid.Data2, guid.Data3, \

-    guid.Data4[0], guid.Data4[1], guid.Data4[3], guid.Data4[4], \

-    guid.Data4[5], guid.Data4[6], guid.Data4[7], guid.Data4[8]

-

-static GstCaps *

-audio_media_type_to_caps (AM_MEDIA_TYPE *mediatype)

-{

-  return NULL;

-}

-

-static GstCaps *

-video_media_type_to_caps (AM_MEDIA_TYPE *mediatype)

-{

-  GstCaps *caps = NULL;

-

-  /* TODO: Add  RGB types. */

-  if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YUY2))

-    caps = gst_caps_new_simple ("video/x-raw-yuv", 

-            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'), NULL);

-  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_UYVY))

-    caps = gst_caps_new_simple ("video/x-raw-yuv", 

-            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'), NULL);

-  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YUYV))

-    caps = gst_caps_new_simple ("video/x-raw-yuv", 

-            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V'), NULL);

-  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YV12))

-    caps = gst_caps_new_simple ("video/x-raw-yuv", 

-            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'V', '1', '2'), NULL);

-

-  if (!caps) {

-    GST_DEBUG ("No subtype known; cannot continue");

-    return NULL;

-  }

-

-  if (IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo) &&

-          mediatype->cbFormat >= sizeof(VIDEOINFOHEADER))

-  {

-    VIDEOINFOHEADER *vh = (VIDEOINFOHEADER *)mediatype->pbFormat;

-

-	/* TODO: Set PAR here. Based on difference between source and target RECTs? 

-     *       Do we want framerate? Based on AvgTimePerFrame? */

-    gst_caps_set_simple (caps, 

-            "width", G_TYPE_INT, vh->bmiHeader.biWidth,

-            "height", G_TYPE_INT, vh->bmiHeader.biHeight,

-			NULL);

-  }

-

-  return caps;

-}

-

-

-/* Create a GstCaps object representing the same media type as

- * this AM_MEDIA_TYPE.

- *

- * Returns NULL if no corresponding GStreamer type is known.

- *

- * May modify mediatype.

- */

-static GstCaps *

-gst_directshow_media_type_to_caps (AM_MEDIA_TYPE *mediatype)

-{

-  GstCaps *caps = NULL;

-

-  if (IsEqualGUID (mediatype->majortype, MEDIATYPE_Video))

-    caps = video_media_type_to_caps (mediatype);

-  else if (IsEqualGUID (mediatype->majortype, MEDIATYPE_Audio))

-    caps = audio_media_type_to_caps (mediatype);

-  else {

-    GST_DEBUG ("Non audio/video media types not yet recognised, please add me: "

-            GUID_FORMAT, GUID_ARGS(mediatype->majortype));

-  }

-

-  if (caps) {

-    gchar *capsstring = gst_caps_to_string (caps);

-    GST_DEBUG ("Converted AM_MEDIA_TYPE to \"%s\"", capsstring);

-    g_free (capsstring);

-  }

-  else {

-    GST_WARNING ("Failed to convert AM_MEDIA_TYPE to caps");

-  }

-

-  return caps;

-}

-

-/* Fill in a DirectShow AM_MEDIA_TYPE structure representing the same media

- * type as this GstCaps object.

- *

- * Returns FALSE if no corresponding type is known.

- *

- * Only operates on simple (single structure) caps.

- */

-static gboolean

-gst_caps_to_directshow_media_type (GstCaps *caps, AM_MEDIA_TYPE *mediatype)

-{

-  GstStructure *s = gst_caps_get_structure (caps, 0);

-  const gchar *name = gst_structure_get_name (s);

-

-  gchar *capsstring = gst_caps_to_string (caps);

-  GST_DEBUG ("Converting caps \"%s\" to AM_MEDIA_TYPE", capsstring);

-  g_free (capsstring);

-

-  memset (mediatype, 0, sizeof (AM_MEDIA_TYPE));

-

-  if (!strcmp (name, "video/x-raw-yuv")) {

-    guint32 fourcc;

-	int width, height;

-    int bpp;

-

-    if (!gst_structure_get_fourcc (s, "format", &fourcc)) {

-      GST_WARNING ("Failed to convert caps, no fourcc");

-      return FALSE;

-    }

-

-	if (!gst_structure_get_int (s, "width", &width)) {

-      GST_WARNING ("Failed to convert caps, no width");

-      return FALSE;

-    }

-	if (!gst_structure_get_int (s, "height", &height)) {

-      GST_WARNING ("Failed to convert caps, no height");

-      return FALSE;

-    }

-

-    mediatype->majortype = MEDIATYPE_Video;

-    switch (fourcc) {

-      case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):

-        mediatype->subtype = MEDIASUBTYPE_YUY2;

-        bpp = 16;

-        break;

-      case GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V'):

-        mediatype->subtype = MEDIASUBTYPE_YUYV;

-        bpp = 16;

-        break;

-      case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):

-        mediatype->subtype = MEDIASUBTYPE_UYVY;

-        bpp = 16;

-        break;

-      case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):

-        mediatype->subtype = MEDIASUBTYPE_YV12;

-        bpp = 12;

-        break;

-      default:

-        GST_WARNING ("Failed to convert caps, not a known fourcc");

-        return FALSE;

-    }

-

-    mediatype->bFixedSizeSamples = TRUE; /* Always true for raw video */

-    mediatype->bTemporalCompression = FALSE; /* Likewise, always false */

-

-    {

-      int par_n, par_d;

-      VIDEOINFOHEADER *vi = (VIDEOINFOHEADER *)CoTaskMemAlloc (sizeof (VIDEOINFOHEADER));

-      memset (vi, 0, sizeof (VIDEOINFOHEADER));

-

-      mediatype->formattype = FORMAT_VideoInfo;

-      mediatype->cbFormat = sizeof (VIDEOINFOHEADER);

-      mediatype->pbFormat = (BYTE *)vi;

-

-      mediatype->lSampleSize = width * height * bpp / 8;

-

-      GST_INFO ("Set mediatype format: size %d, sample size %d", mediatype->cbFormat, mediatype->lSampleSize);

-

-      vi->rcSource.top = 0;

-      vi->rcSource.left = 0;

-      vi->rcSource.bottom = height;

-      vi->rcSource.right = width;

-

-      vi->rcTarget.top = 0;

-      vi->rcTarget.left = 0;

-      if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d)) {

-        /* To handle non-square pixels, we set the target rectangle to a 

-         * different size than the source rectangle.

-         * There might be a better way, but this seems to work. */

-        vi->rcTarget.bottom = height;

-        vi->rcTarget.right = width * par_n / par_d;

-        GST_DEBUG ("Got PAR: set target right to %d from width %d", vi->rcTarget.right, width);

-      }

-      else {

-        GST_DEBUG ("No PAR found");

-        vi->rcTarget.bottom = height;

-        vi->rcTarget.right = width;

-      }

-

-      vi->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);

-      vi->bmiHeader.biWidth = width;

-      vi->bmiHeader.biHeight = -height; /* Required to be negative. */

-      vi->bmiHeader.biPlanes = 1; /* Required to be 1 */

-      vi->bmiHeader.biBitCount = bpp;

-      vi->bmiHeader.biCompression = fourcc;

-      vi->bmiHeader.biSizeImage = width * height * bpp / 8;

-

-      /* We can safely zero these; they don't matter for our uses */

-      vi->bmiHeader.biXPelsPerMeter = 0;

-      vi->bmiHeader.biYPelsPerMeter = 0;

-      vi->bmiHeader.biClrUsed = 0;

-      vi->bmiHeader.biClrImportant = 0;

-    }

-

-    GST_DEBUG ("Successfully built AM_MEDIA_TYPE from caps");

-    return TRUE;

-  }

-

-  GST_WARNING ("Failed to convert caps, not a known caps type");

-  /* Only YUV supported so far */

-

-  return FALSE;

-}

-

-/* Plugin entry point */

-extern "C" static gboolean

-plugin_init (GstPlugin * plugin)

-{

-  /* PRIMARY: this is the best videosink to use on windows */

-  if (!gst_element_register (plugin, "dshowvideosink",

-          GST_RANK_PRIMARY, GST_TYPE_DSHOWVIDEOSINK))

-    return FALSE;

-

-  return TRUE;

-}

-

-extern "C" GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

-    GST_VERSION_MINOR,

-    "dshowsinkwrapper",

-    "DirectShow sink wrapper plugin",

-    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

+/* GStreamer
+ * Copyright (C) 2008 Pioneers of the Inevitable <songbird@songbirdnest.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "dshowvideosink.h"
+#include "dshowvideofakesrc.h"
+
+#include <gst/interfaces/xoverlay.h>
+
+#include "windows.h"
+
+#define WM_GRAPH_NOTIFY WM_APP + 1 /* Private message */
+
+static const GstElementDetails gst_dshowvideosink_details =
+GST_ELEMENT_DETAILS ("DirectShow video sink",
+    "Sink/Video",
+    "Display data using a DirectShow video renderer",
+    "Pioneers of the Inevitable <songbird@songbirdnest.com>");
+
+GST_DEBUG_CATEGORY (dshowvideosink_debug);
+#define GST_CAT_DEFAULT dshowvideosink_debug
+
+static GstCaps * gst_directshow_media_type_to_caps (AM_MEDIA_TYPE *mediatype);
+static gboolean gst_caps_to_directshow_media_type (GstCaps *caps, AM_MEDIA_TYPE *mediatype);
+
+/* TODO: Support RGB! */
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (
+        "video/x-raw-yuv,"
+        "width = (int) [ 1, MAX ],"
+        "height = (int) [ 1, MAX ],"
+        "framerate = (fraction) [ 0, MAX ]," 
+        "format = {(fourcc)YUY2, (fourcc)UYVY, (fourcc) YUVY, (fourcc)YV12 }")
+    );
+
+static void gst_dshowvideosink_init_interfaces (GType type);
+
+GST_BOILERPLATE_FULL (GstDshowVideoSink, gst_dshowvideosink, GstBaseSink,
+    GST_TYPE_BASE_SINK, gst_dshowvideosink_init_interfaces);
+
+enum
+{
+  PROP_0,
+  PROP_KEEP_ASPECT_RATIO,
+  PROP_FULL_SCREEN,
+  PROP_RENDERER
+};
+
+/* GObject methods */
+static void gst_dshowvideosink_finalize (GObject * gobject);
+static void gst_dshowvideosink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_dshowvideosink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+/* GstElement methods */
+static GstStateChangeReturn gst_dshowvideosink_change_state (GstElement * element, GstStateChange transition);
+
+/* GstBaseSink methods */
+static gboolean gst_dshowvideosink_start (GstBaseSink * bsink);
+static gboolean gst_dshowvideosink_stop (GstBaseSink * bsink);
+static gboolean gst_dshowvideosink_unlock (GstBaseSink * bsink);
+static gboolean gst_dshowvideosink_unlock_stop (GstBaseSink * bsink);
+static gboolean gst_dshowvideosink_set_caps (GstBaseSink * bsink, GstCaps * caps);
+static GstCaps *gst_dshowvideosink_get_caps (GstBaseSink * bsink);
+static GstFlowReturn gst_dshowvideosink_render (GstBaseSink *sink, GstBuffer *buffer);
+
+/* GstXOverlay methods */
+static void gst_dshowvideosink_set_window_id (GstXOverlay * overlay, ULONG window_id);
+
+/* TODO: event, preroll, buffer_alloc? 
+ * buffer_alloc won't generally be all that useful because the renderers require a 
+ * different stride to GStreamer's implicit values. 
+ */
+
+static gboolean
+gst_dshowvideosink_interface_supported (GstImplementsInterface * iface,
+    GType type)
+{
+  g_assert (type == GST_TYPE_X_OVERLAY);
+  return TRUE;
+}
+
+static void
+gst_dshowvideosink_interface_init (GstImplementsInterfaceClass * klass)
+{
+  klass->supported = gst_dshowvideosink_interface_supported;
+}
+
+
+static void
+gst_dshowvideosink_xoverlay_interface_init (GstXOverlayClass * iface)
+{
+  iface->set_xwindow_id = gst_dshowvideosink_set_window_id;
+}
+
+static void
+gst_dshowvideosink_init_interfaces (GType type)
+{
+  static const GInterfaceInfo iface_info = {
+    (GInterfaceInitFunc) gst_dshowvideosink_interface_init,
+    NULL,
+    NULL,
+  };
+
+  static const GInterfaceInfo xoverlay_info = {
+    (GInterfaceInitFunc) gst_dshowvideosink_xoverlay_interface_init,
+    NULL,
+    NULL,
+  };
+
+  g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
+      &iface_info);
+  g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &xoverlay_info);
+
+  GST_DEBUG_CATEGORY_INIT (dshowvideosink_debug, "dshowvideosink", 0, \
+      "DirectShow video sink");
+}
+static void
+gst_dshowvideosink_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_template));
+
+  gst_element_class_set_details (element_class, &gst_dshowvideosink_details);
+}
+
+static void
+gst_dshowvideosink_class_init (GstDshowVideoSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_dshowvideosink_finalize);
+  gobject_class->set_property =
+      GST_DEBUG_FUNCPTR (gst_dshowvideosink_set_property);
+  gobject_class->get_property =
+      GST_DEBUG_FUNCPTR (gst_dshowvideosink_get_property);
+
+  gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dshowvideosink_change_state);
+
+  gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_dshowvideosink_get_caps);
+  gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_dshowvideosink_set_caps);
+  gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_dshowvideosink_start);
+  gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_dshowvideosink_stop);
+  gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_dshowvideosink_unlock);
+  gstbasesink_class->unlock_stop =
+      GST_DEBUG_FUNCPTR (gst_dshowvideosink_unlock_stop);
+  gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_dshowvideosink_render);
+
+  /* Add properties */
+  g_object_class_install_property (G_OBJECT_CLASS (klass),
+      PROP_KEEP_ASPECT_RATIO, g_param_spec_boolean ("force-aspect-ratio",
+          "Force aspect ratio",
+          "When enabled, scaling will respect original aspect ratio", FALSE,
+          (GParamFlags)G_PARAM_READWRITE));
+  g_object_class_install_property (G_OBJECT_CLASS (klass),
+      PROP_FULL_SCREEN, g_param_spec_boolean ("fullscreen",
+          "Full screen mode",
+          "Use full-screen mode (not available when using XOverlay)", FALSE,
+          (GParamFlags)G_PARAM_READWRITE));
+
+  g_object_class_install_property (G_OBJECT_CLASS (klass),
+      PROP_RENDERER, g_param_spec_string ("renderer", "Renderer", 
+      "Force usage of specific DirectShow renderer (VMR9 or VMR)",
+      NULL, (GParamFlags)G_PARAM_READWRITE));
+}
+
+static void
+gst_dshowvideosink_clear (GstDshowVideoSink *sink)
+{
+  sink->renderersupport = NULL;
+  sink->fakesrc = NULL;
+  sink->filter_graph = NULL;
+  sink->filter_media_event = NULL;
+
+  sink->keep_aspect_ratio = FALSE;
+  sink->full_screen = FALSE;
+
+  sink->window_closed = FALSE;
+  sink->window_id = NULL;
+
+  sink->connected = FALSE;
+}
+
+static void
+gst_dshowvideosink_init (GstDshowVideoSink * sink, GstDshowVideoSinkClass * klass)
+{
+  HRESULT hr;
+
+  gst_dshowvideosink_clear (sink);
+
+  hr = CoInitialize (0);
+  if (SUCCEEDED(hr))
+    sink->comInitialized = TRUE;
+
+  /* TODO: Copied from GstVideoSink; should we use that as base class? */
+  /* 20ms is more than enough, 80-130ms is noticable */
+  gst_base_sink_set_max_lateness (GST_BASE_SINK (sink), 20 * GST_MSECOND);
+  gst_base_sink_set_qos_enabled (GST_BASE_SINK (sink), TRUE);
+}
+
+static void
+gst_dshowvideosink_finalize (GObject * gobject)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (gobject);
+
+  if (sink->preferredrenderer)
+    g_free (sink->preferredrenderer);
+
+  if (sink->comInitialized) {
+    CoUninitialize ();
+    sink->comInitialized = FALSE;
+  }
+
+  G_OBJECT_CLASS (parent_class)->finalize (gobject);
+}
+
+static void
+gst_dshowvideosink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (object);
+
+  switch (prop_id) {
+    case PROP_RENDERER:
+      if (sink->preferredrenderer)
+        g_free (sink->preferredrenderer);
+
+      sink->preferredrenderer = g_value_dup_string (value);
+      break;
+    case PROP_KEEP_ASPECT_RATIO:
+      sink->keep_aspect_ratio = g_value_get_boolean (value);
+      break;
+    case PROP_FULL_SCREEN:
+      sink->full_screen = g_value_get_boolean (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_dshowvideosink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (object);
+
+  switch (prop_id) {
+    case PROP_RENDERER:
+      g_value_take_string (value, sink->preferredrenderer);
+      break;
+    case PROP_KEEP_ASPECT_RATIO:
+      g_value_set_boolean (value, sink->keep_aspect_ratio);
+      break;
+    case PROP_FULL_SCREEN:
+      g_value_set_boolean (value, sink->full_screen);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstCaps *
+gst_dshowvideosink_get_caps (GstBaseSink * basesink)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (basesink);
+
+  return NULL;
+}
+
+static void dump_available_media_types (IPin *pin)
+{
+  /* Enumerate all media types on this pin, output info about them */
+  IEnumMediaTypes *enumerator = NULL;
+  AM_MEDIA_TYPE *type;
+  GstCaps *caps;
+  int i = 0;
+
+  GST_INFO ("Enumerating media types on pin %p", pin);
+
+  pin->EnumMediaTypes (&enumerator);
+
+  while (enumerator->Next (1, &type, NULL) == S_OK) {
+    i++;
+    caps = gst_directshow_media_type_to_caps (type);
+
+    if (caps) {
+      gchar *str = gst_caps_to_string (caps);
+      GST_INFO ("Type %d: converted to caps \"%s\"", i, str);
+      g_free (str);
+
+      gst_caps_unref (caps);
+    }
+    else
+      GST_INFO ("Failed to convert type to GstCaps");
+
+    DeleteMediaType (type);
+  }
+  GST_INFO ("Enumeration complete");
+
+  enumerator->Release();
+}
+
+static void
+dump_all_pin_media_types (IBaseFilter *filter)
+{
+  IEnumPins *enumpins = NULL;
+  IPin *pin = NULL;
+  HRESULT hres; 
+
+  hres = filter->EnumPins (&enumpins);
+  if (FAILED(hres)) {
+    GST_WARNING ("Cannot enumerate pins on filter");
+    return;
+  }
+
+  GST_INFO ("Enumerating pins on filter %p", filter);
+  while (enumpins->Next (1, &pin, NULL) == S_OK)
+  {
+    IMemInputPin *meminputpin;
+    PIN_DIRECTION pindir;
+    hres = pin->QueryDirection (&pindir);
+
+    GST_INFO ("Found a pin with direction: %s", (pindir == PINDIR_INPUT)? "input": "output");
+    dump_available_media_types (pin);
+
+    hres = pin->QueryInterface (
+            IID_IMemInputPin, (void **) &meminputpin);
+    if (hres == S_OK) {
+      GST_INFO ("Pin is a MemInputPin (push mode): %p", meminputpin);
+      meminputpin->Release();
+    }
+    else
+      GST_INFO ("Pin is not a MemInputPin (pull mode?): %p", pin);
+
+    pin->Release();
+  }
+  enumpins->Release();
+}
+
+gboolean 
+gst_dshow_get_pin_from_filter (IBaseFilter *filter, PIN_DIRECTION pindir, IPin **pin)
+{
+  gboolean ret = FALSE;
+  IEnumPins *enumpins = NULL;
+  IPin *pintmp = NULL;
+  HRESULT hres; 
+  *pin = NULL;
+
+  hres = filter->EnumPins (&enumpins);
+  if (FAILED(hres)) {
+    return ret;
+  }
+
+  while (enumpins->Next (1, &pintmp, NULL) == S_OK)
+  {
+    PIN_DIRECTION pindirtmp;
+    hres = pintmp->QueryDirection (&pindirtmp);
+    if (hres == S_OK && pindir == pindirtmp) {
+      *pin = pintmp;
+      ret = TRUE;
+      break;
+    }
+    pintmp->Release ();
+  }
+  enumpins->Release ();
+
+  return ret;
+}
+
+static void 
+gst_dshowvideosink_handle_event (GstDshowVideoSink *sink)
+{
+  if (sink->filter_media_event) {
+    long evCode;
+    LONG_PTR param1, param2;
+    HRESULT hr;
+    while (SUCCEEDED (sink->filter_media_event->GetEvent(&evCode, &param1, &param2, 0)))
+    {
+      GST_INFO_OBJECT (sink, "Received DirectShow graph event code 0x%x", evCode);
+      sink->filter_media_event->FreeEventParams(evCode, param1, param2);
+    }
+  }
+}
+
+/* WNDPROC for application-supplied windows */
+LRESULT APIENTRY WndProcHook (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+  /* Handle certain actions specially on the window passed to us.
+   * Then forward back to the original window.
+   */
+  GstDshowVideoSink *sink = (GstDshowVideoSink *)GetProp (hWnd, L"GstDShowVideoSink");
+
+  switch (message) {
+    case WM_GRAPH_NOTIFY:
+      gst_dshowvideosink_handle_event (sink);
+      return 0;
+    case WM_PAINT:
+      sink->renderersupport->PaintWindow ();
+      break;
+    case WM_MOVE:
+    case WM_SIZE:
+      sink->renderersupport->MoveWindow ();
+      break;
+    case WM_DISPLAYCHANGE:
+      sink->renderersupport->DisplayModeChanged();
+      break;
+    case WM_ERASEBKGND:
+      /* DirectShow docs recommend ignoring this message to avoid flicker */
+      return TRUE;
+    case WM_CLOSE:
+      sink->window_closed = TRUE;
+  }
+  return CallWindowProc (sink->prevWndProc, hWnd, message, wParam, lParam);
+}
+
+/* WndProc for our default window, if the application didn't supply one */
+LRESULT APIENTRY 
+WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+  GstDshowVideoSink *sink = (GstDshowVideoSink *)GetWindowLongPtr (hWnd, GWLP_USERDATA);
+
+  if (!sink) {
+    /* I think these happen before we have a chance to set our userdata pointer */
+    GST_DEBUG ("No sink!");
+    return DefWindowProc (hWnd, message, wParam, lParam);
+  }
+
+  //GST_DEBUG_OBJECT (sink, "Got a window message for %x, %x", hWnd, message);
+
+  switch (message) {
+    case WM_GRAPH_NOTIFY:
+      GST_LOG_OBJECT (sink, "GRAPH_NOTIFY WINDOW MESSAGE");
+      gst_dshowvideosink_handle_event (sink);
+      return 0;
+    case WM_PAINT:
+      sink->renderersupport->PaintWindow ();
+      break;
+    case WM_MOVE:
+    case WM_SIZE:
+      sink->renderersupport->MoveWindow ();
+      break;
+    case WM_DISPLAYCHANGE:
+      sink->renderersupport->DisplayModeChanged();
+      break;
+    case WM_ERASEBKGND:
+      /* DirectShow docs recommend ignoring this message */
+      return TRUE;
+    case WM_CLOSE:
+      sink->renderersupport->DestroyWindow ();
+      sink->window_closed = TRUE;
+      return 0;
+  }
+
+  return DefWindowProc (hWnd, message, wParam, lParam);
+}
+
+static gpointer
+gst_dshowvideosink_window_thread (GstDshowVideoSink * sink)
+{
+  WNDCLASS WndClass;
+  int width, height;
+  int offx, offy;
+  DWORD exstyle, style;
+
+  memset (&WndClass, 0, sizeof (WNDCLASS));
+  WndClass.style = CS_HREDRAW | CS_VREDRAW;
+  WndClass.hInstance = GetModuleHandle (NULL);
+  WndClass.lpszClassName = L"GST-DShowSink";
+  WndClass.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
+  WndClass.cbClsExtra = 0;
+  WndClass.cbWndExtra = 0;
+  WndClass.lpfnWndProc = WndProc;
+  WndClass.hCursor = LoadCursor (NULL, IDC_ARROW);
+  RegisterClass (&WndClass);
+
+  if (sink->full_screen) {
+    /* This doesn't seem to work, it returns the wrong values! But when we
+     * later use ShowWindow to show it maximized, it goes to full-screen
+     * anyway. TODO: Figure out why. */
+    width = GetSystemMetrics (SM_CXFULLSCREEN);
+    height = GetSystemMetrics (SM_CYFULLSCREEN);
+    offx = 0;
+    offy = 0;
+
+    style = WS_POPUP; /* No window decorations */
+    exstyle = 0;
+  }
+  else {
+    /* By default, create a normal top-level window, the size 
+     * of the video.
+     */
+    RECT rect;
+    VIDEOINFOHEADER *vi = (VIDEOINFOHEADER *)sink->mediatype.pbFormat;
+
+    /* rcTarget is the aspect-ratio-corrected size of the video. */
+    width = vi->rcTarget.right + GetSystemMetrics (SM_CXSIZEFRAME) * 2;
+    height = vi->rcTarget.bottom + GetSystemMetrics (SM_CYCAPTION) +
+        (GetSystemMetrics (SM_CYSIZEFRAME) * 2);
+
+    SystemParametersInfo (SPI_GETWORKAREA, NULL, &rect, 0);
+    int screenwidth = rect.right - rect.left;
+    int screenheight = rect.bottom - rect.top;
+    offx = rect.left;
+    offy = rect.top;
+
+    /* Make it fit into the screen without changing the
+     * aspect ratio. */
+    if (width > screenwidth) {
+      double ratio = (double)screenwidth/(double)width;
+      width = screenwidth;
+      height = (int)(height * ratio);
+    }
+    if (height > screenheight) {
+      double ratio = (double)screenheight/(double)height;
+      height = screenheight;
+      width = (int)(width * ratio);
+    }
+
+    style = WS_OVERLAPPEDWINDOW; /* Normal top-level window */
+    exstyle = 0;
+  }
+
+  HWND video_window = CreateWindowEx (exstyle, L"GST-DShowSink",
+      L"GStreamer DirectShow sink default window",
+      style, offx, offy, width, height, NULL, NULL,
+      WndClass.hInstance, NULL);
+  if (video_window == NULL) {
+    GST_ERROR_OBJECT (sink, "Failed to create window!");
+    return NULL;
+  }
+
+  SetWindowLongPtr (video_window, GWLP_USERDATA, (LONG)sink);
+
+  sink->window_id = video_window;
+
+  /* signal application we created a window */
+  gst_x_overlay_got_xwindow_id (GST_X_OVERLAY (sink),
+      (gulong)video_window);
+
+  /* Set the renderer's clipping window */
+  if (!sink->renderersupport->SetRendererWindow (video_window)) {
+    GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p", sink->renderersupport);
+  }
+
+  /* Now show the window, as appropriate */
+  if (sink->full_screen) {
+    ShowWindow (video_window, SW_SHOWMAXIMIZED);
+    ShowCursor (FALSE);
+  }
+  else
+    ShowWindow (video_window, SW_SHOWNORMAL);
+
+  /* Trigger the initial paint of the window */
+  UpdateWindow (video_window);
+
+  ReleaseSemaphore (sink->window_created_signal, 1, NULL);
+
+  /* start message loop processing our default window messages */
+  while (1) {
+    MSG msg;
+
+    if (GetMessage (&msg, video_window, 0, 0) <= 0) {
+      GST_LOG_OBJECT (sink, "our window received WM_QUIT or error.");
+      break;
+    }
+    DispatchMessage (&msg);
+  }
+
+  return NULL;
+}
+
+static gboolean
+gst_dshowvideosink_create_default_window (GstDshowVideoSink * sink)
+{
+  sink->window_created_signal = CreateSemaphore (NULL, 0, 1, NULL);
+  if (sink->window_created_signal == NULL)
+    goto failed;
+
+  sink->window_thread = g_thread_create (
+      (GThreadFunc) gst_dshowvideosink_window_thread, sink, TRUE, NULL);
+
+  /* wait maximum 10 seconds for window to be created */
+  if (WaitForSingleObject (sink->window_created_signal,
+          10000) != WAIT_OBJECT_0)
+    goto failed;
+
+  CloseHandle (sink->window_created_signal);
+  return TRUE;
+
+failed:
+  CloseHandle (sink->window_created_signal);
+  GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
+      ("Error creating our default window"), (NULL));
+
+  return FALSE;
+}
+
+static void gst_dshowvideosink_set_window_id (GstXOverlay * overlay, ULONG window_id)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (overlay);
+  HWND videowindow = (HWND)window_id;
+
+  if (videowindow == sink->window_id) {
+    GST_DEBUG_OBJECT (sink, "Window already set");
+    return;
+  }
+
+  /* TODO: What if we already have a window? What if we're already playing? */
+  sink->window_id = videowindow;
+}
+
+static void gst_dshowvideosink_set_window_for_renderer (GstDshowVideoSink *sink)
+{
+  /* Application has requested a specific window ID */
+  sink->prevWndProc = (WNDPROC) SetWindowLong (sink->window_id, GWL_WNDPROC, (LONG)WndProcHook);
+  GST_DEBUG_OBJECT (sink, "Set wndproc to %p from %p", WndProcHook, sink->prevWndProc);
+  SetProp (sink->window_id, L"GstDShowVideoSink", sink);
+  /* This causes the new WNDPROC to become active */
+  SetWindowPos (sink->window_id, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
+
+  if (!sink->renderersupport->SetRendererWindow (sink->window_id)) {
+    GST_WARNING_OBJECT (sink, "Failed to set HWND %x on renderer", sink->window_id);
+    return;
+  }
+
+  /* This tells the renderer where the window is located, needed to 
+   * start drawing in the right place.  */
+  sink->renderersupport->MoveWindow();
+  GST_INFO_OBJECT (sink, "Set renderer window to %x", sink->window_id);
+}
+
+static void
+gst_dshowvideosink_prepare_window (GstDshowVideoSink *sink)
+{
+  HRESULT hres;
+
+  /* Give the app a last chance to supply a window id */
+  if (!sink->window_id) {
+    gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (sink));
+  }
+
+  /* If the app supplied one, use it. Otherwise, go ahead
+   * and create (and use) our own window */
+  if (sink->window_id) {
+    gst_dshowvideosink_set_window_for_renderer (sink);
+  }
+  else {
+    gst_dshowvideosink_create_default_window (sink);
+  }
+
+  if (sink->filter_media_event) {
+    sink->filter_media_event->Release();
+    sink->filter_media_event = NULL;
+  }
+
+  hres = sink->filter_graph->QueryInterface(
+          IID_IMediaEventEx, (void **) &sink->filter_media_event);
+
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink, "Failed to get IMediaEventEx");
+  }
+  else {
+    hres = sink->filter_media_event->SetNotifyWindow ((OAHWND)sink->window_id,
+            WM_GRAPH_NOTIFY, 0);
+    GST_DEBUG_OBJECT (sink, "SetNotifyWindow(%p) returned %x", sink->window_id, hres);
+  }
+}
+
+static gboolean
+gst_dshowvideosink_connect_graph (GstDshowVideoSink *sink)
+{
+  HRESULT hres;
+  IPin *srcpin;
+  IPin *sinkpin;
+
+  GST_INFO_OBJECT (sink, "Connecting DirectShow pins");
+
+  srcpin = sink->fakesrc->GetOutputPin();
+
+  gst_dshow_get_pin_from_filter (sink->renderersupport->GetFilter(), PINDIR_INPUT, 
+      &sinkpin);
+  if (!sinkpin) {
+    GST_WARNING_OBJECT (sink, "Cannot get input pin from Renderer");
+    return FALSE;
+  }
+
+  /* Be warned that this call WILL deadlock unless you call it from
+   * the main thread. Thus, we call this from the state change, not from
+   * setcaps (which happens in a streaming thread).
+   */
+  hres = sink->filter_graph->ConnectDirect (
+           srcpin, sinkpin, NULL);
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink, "Could not connect pins: %x", hres);
+    sinkpin->Release();
+    return FALSE;
+  }
+  sinkpin->Release();
+  return TRUE;
+}
+
+static GstStateChangeReturn
+gst_dshowvideosink_start_graph (GstDshowVideoSink *sink)
+{
+  IMediaControl *control = NULL;
+  HRESULT hres;
+  GstStateChangeReturn ret;
+
+  GST_DEBUG_OBJECT (sink, "Connecting and starting DirectShow graph");
+
+  if (!sink->connected) {
+    /* This is fine; this just means we haven't connected yet.
+     * That's normal for the first time this is called. 
+     * So, create a window (or start using an application-supplied
+     * one, then connect the graph */
+    gst_dshowvideosink_prepare_window (sink);
+    if (!gst_dshowvideosink_connect_graph (sink)) {
+      ret = GST_STATE_CHANGE_FAILURE;
+      goto done;
+    }
+    sink->connected = TRUE;
+  }
+
+  hres = sink->filter_graph->QueryInterface(
+          IID_IMediaControl, (void **) &control);
+
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+
+  GST_INFO_OBJECT (sink, "Running DirectShow graph");
+  hres = control->Run();
+  if (FAILED (hres)) {
+    GST_ERROR_OBJECT (sink,
+        "Failed to run the directshow graph (error=%x)", hres);
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+  
+  GST_DEBUG_OBJECT (sink, "DirectShow graph is now running");
+  ret = GST_STATE_CHANGE_SUCCESS;
+
+done:
+  if (control)
+    control->Release();
+
+  return ret;
+}
+static GstStateChangeReturn
+gst_dshowvideosink_pause_graph (GstDshowVideoSink *sink)
+{
+  IMediaControl *control = NULL;
+  GstStateChangeReturn ret;
+  HRESULT hres;
+
+  hres = sink->filter_graph->QueryInterface(
+          IID_IMediaControl, (void **) &control);
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+
+  GST_INFO_OBJECT (sink, "Pausing DirectShow graph");
+  hres = control->Pause();
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink,
+        "Can't pause the directshow graph (error=%x)", hres);
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+
+  ret = GST_STATE_CHANGE_SUCCESS;
+
+done:
+  if (control)
+    control->Release();
+
+  return ret;
+}
+
+static GstStateChangeReturn
+gst_dshowvideosink_stop_graph (GstDshowVideoSink *sink)
+{
+  IMediaControl *control = NULL;
+  GstStateChangeReturn ret;
+  HRESULT hres;
+  IPin *sinkpin;
+
+  hres = sink->filter_graph->QueryInterface(
+          IID_IMediaControl, (void **) &control);
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink, "Failed to get IMediaControl interface");
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+
+  GST_INFO_OBJECT (sink, "Stopping DirectShow graph");
+  hres = control->Stop();
+  if (FAILED (hres)) {
+    GST_WARNING_OBJECT (sink,
+        "Can't stop the directshow graph (error=%x)", hres);
+    ret = GST_STATE_CHANGE_FAILURE;
+    goto done;
+  }
+
+  sink->filter_graph->Disconnect(sink->fakesrc->GetOutputPin());
+
+  gst_dshow_get_pin_from_filter (sink->renderersupport->GetFilter(), PINDIR_INPUT, 
+      &sinkpin);
+  sink->filter_graph->Disconnect(sinkpin);
+  sinkpin->Release();
+
+  GST_DEBUG_OBJECT (sink, "DirectShow graph has stopped");
+
+  if (sink->window_id) {
+    /* Return control of application window */
+    SetWindowLong (sink->window_id, GWL_WNDPROC, (LONG)sink->prevWndProc);
+    RemoveProp (sink->window_id, L"GstDShowVideoSink");
+    SetWindowPos (sink->window_id, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
+    sink->prevWndProc = NULL;
+  }
+  sink->connected = FALSE;
+
+  ret = GST_STATE_CHANGE_SUCCESS;
+
+done:
+  if (control)
+    control->Release();
+
+  return ret;
+}
+
+static GstStateChangeReturn
+gst_dshowvideosink_change_state (GstElement * element, GstStateChange transition)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (element);
+  GstStateChangeReturn ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+      ret = gst_dshowvideosink_start_graph (sink);
+      if (ret != GST_STATE_CHANGE_SUCCESS)
+        return ret;
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+      ret = gst_dshowvideosink_pause_graph (sink);
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      ret = gst_dshowvideosink_stop_graph (sink);
+      break;
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      gst_dshowvideosink_clear (sink);
+      break;
+  }
+
+  return ret;
+}
+
+class VMR9Support : public RendererSupport
+{
+private:
+  GstDshowVideoSink *sink;
+  IBaseFilter *filter;
+  IVMRWindowlessControl9 *control;
+  IVMRFilterConfig9 *config;
+  HWND video_window;
+
+public:
+  VMR9Support (GstDshowVideoSink *sink) : 
+      sink(sink), 
+      filter(NULL),
+      control(NULL),
+      config(NULL)
+  {
+  }
+
+  ~VMR9Support() {
+    if (control)
+      control->Release();
+    if (config)
+      config->Release();
+    if (filter)
+      filter->Release();
+  }
+
+  const char *GetName() {
+    return "VideoMixingRenderer9";
+  }
+
+  IBaseFilter *GetFilter() {
+    return filter;
+  }
+
+  gboolean Configure() {
+    HRESULT hres;
+
+    hres = CoCreateInstance (CLSID_VideoMixingRenderer9, NULL, CLSCTX_INPROC,
+        IID_IBaseFilter, (LPVOID *) &filter);
+    if (FAILED (hres)) {
+      GST_ERROR_OBJECT (sink, 
+          "Can't create an instance of renderer (error=%x)",
+          hres);
+      return FALSE;
+    }
+
+    hres = filter->QueryInterface (
+          IID_IVMRFilterConfig9, (void **) &config);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR9 filter config interface missing: %x", hres);
+      return FALSE;
+    }
+
+    hres = config->SetRenderingMode (VMR9Mode_Windowless);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR9 couldn't be set to windowless mode: %x", hres);
+      return FALSE;
+    }
+    else {
+      GST_DEBUG_OBJECT (sink, "Set VMR9 (%p) to windowless mode!", filter);
+    }
+
+    /* We can't QI to this until _after_ we've been set to windowless mode. 
+     * Apparently this is against the rules in COM, but that's how it is... */
+    hres = filter->QueryInterface (
+          IID_IVMRWindowlessControl9, (void **) &control);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR9 windowless control interface missing: %x", hres);
+      return FALSE;
+    }
+
+    if (sink->keep_aspect_ratio) {
+      control->SetAspectRatioMode(VMR9ARMode_LetterBox);
+    }
+    else {
+      control->SetAspectRatioMode(VMR9ARMode_None);
+    }
+    return TRUE;
+  }
+
+  gboolean SetRendererWindow(HWND window) {
+    video_window = window;
+    HRESULT hres = control->SetVideoClippingWindow (video_window);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p: %x", filter, hres);
+      return FALSE;
+    }
+    return TRUE;
+  }
+
+  void PaintWindow()
+  {
+    HRESULT hr;
+    PAINTSTRUCT ps;
+    HDC         hdc;
+    RECT        rcClient;
+
+    GetClientRect(video_window, &rcClient);
+    hdc = BeginPaint(video_window, &ps);
+
+    hr = control->RepaintVideo(video_window, hdc);
+
+    EndPaint(video_window, &ps);
+  }
+
+  void MoveWindow()
+  {
+    HRESULT hr;
+    RECT rect;
+
+    // Track the movement of the container window and resize as needed
+    GetClientRect(video_window, &rect);
+    hr = control->SetVideoPosition(NULL, &rect);
+  }
+
+  void DisplayModeChanged() {
+    control->DisplayModeChanged();
+  }
+
+  void DestroyWindow() {
+    ::DestroyWindow (video_window);
+  }
+};
+
+class VMR7Support : public RendererSupport
+{
+private:
+  GstDshowVideoSink *sink;
+  IBaseFilter *filter;
+  IVMRWindowlessControl *control;
+  IVMRFilterConfig *config;
+  HWND video_window;
+
+public:
+  VMR7Support (GstDshowVideoSink *sink) : 
+      sink(sink), 
+      filter(NULL),
+      control(NULL),
+      config(NULL)
+  {
+  }
+
+  ~VMR7Support() {
+    if (control)
+      control->Release();
+    if (config)
+      config->Release();
+    if (filter)
+      filter->Release();
+  }
+
+  const char *GetName() {
+    return "VideoMixingRenderer";
+  }
+
+  IBaseFilter *GetFilter() {
+    return filter;
+  }
+
+  gboolean Configure() {
+    HRESULT hres;
+
+    hres = CoCreateInstance (CLSID_VideoMixingRenderer, NULL, CLSCTX_INPROC,
+        IID_IBaseFilter, (LPVOID *) &filter);
+    if (FAILED (hres)) {
+      GST_ERROR_OBJECT (sink, 
+          "Can't create an instance of renderer (error=%x)",
+          hres);
+      return FALSE;
+    }
+
+    hres = filter->QueryInterface (
+          IID_IVMRFilterConfig, (void **) &config);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR filter config interface missing: %x", hres);
+      return FALSE;
+    }
+
+    hres = config->SetRenderingMode (VMRMode_Windowless);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR couldn't be set to windowless mode: %x", hres);
+      return FALSE;
+    }
+    else {
+      GST_DEBUG_OBJECT (sink, "Set VMR (%p) to windowless mode!", filter);
+    }
+
+    hres = filter->QueryInterface (
+          IID_IVMRWindowlessControl, (void **) &control);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "VMR windowless control interface missing: %x", hres);
+      return FALSE;
+    }
+
+    if (sink->keep_aspect_ratio) {
+      control->SetAspectRatioMode(VMR_ARMODE_LETTER_BOX);
+    }
+    else {
+      control->SetAspectRatioMode(VMR_ARMODE_NONE);
+    }
+    return TRUE;
+  }
+
+  gboolean SetRendererWindow(HWND window) {
+    video_window = window;
+    HRESULT hres = control->SetVideoClippingWindow (video_window);
+    if (FAILED (hres)) {
+      GST_WARNING_OBJECT (sink, "Failed to set video clipping window on filter %p: %x", filter, hres);
+      return FALSE;
+    }
+    return TRUE;
+  }
+
+  void PaintWindow()
+  {
+    HRESULT hr;
+    PAINTSTRUCT ps;
+    HDC         hdc;
+    RECT        rcClient;
+
+    GetClientRect(video_window, &rcClient);
+    hdc = BeginPaint(video_window, &ps);
+
+    hr = control->RepaintVideo(video_window, hdc);
+
+    EndPaint(video_window, &ps);
+  }
+
+  void MoveWindow()
+  {
+    HRESULT hr;
+    RECT rect;
+
+    // Track the movement of the container window and resize as needed
+    GetClientRect(video_window, &rect);
+    hr = control->SetVideoPosition(NULL, &rect);
+  }
+
+  void DisplayModeChanged() {
+    control->DisplayModeChanged();
+  }
+
+  void DestroyWindow() {
+    ::DestroyWindow (video_window);
+  }
+};
+
+static gboolean 
+gst_dshowvideosink_create_renderer (GstDshowVideoSink *sink) 
+{
+  GST_DEBUG_OBJECT (sink, "Trying to create renderer '%s'", "VMR9");
+
+  RendererSupport *support = NULL;
+
+  if (sink->preferredrenderer) {
+    if (!strcmp (sink->preferredrenderer, "VMR9")) {
+      GST_INFO_OBJECT (sink, "Forcing use of VMR9");
+      support = new VMR9Support (sink);
+    }
+    else if (!strcmp (sink->preferredrenderer, "VMR")) {
+      GST_INFO_OBJECT (sink, "Forcing use of VMR");
+      support = new VMR7Support (sink);
+    }
+    else {
+      GST_ERROR_OBJECT (sink, "Unknown sink type '%s'", sink->preferredrenderer);
+      return FALSE;
+    }
+
+    if (!support->Configure()) {
+      GST_ERROR_OBJECT (sink, "Couldn't configure selected renderer");
+      delete support;
+      return FALSE;
+    }
+    goto done;
+  }
+
+  support = new VMR9Support (sink);
+  if (!support->Configure()) {
+    GST_INFO_OBJECT (sink, "Failed to configure VMR9, trying VMR7");
+    delete support;
+    support = new VMR7Support (sink);
+    if (!support->Configure()) {
+      GST_ERROR_OBJECT (sink, "Failed to configure VMR9 or VMR7");
+      delete support;
+      return FALSE;
+    }
+  }
+
+done:
+  sink->renderersupport = support;
+  return TRUE;
+}
+
+static gboolean
+gst_dshowvideosink_build_filtergraph (GstDshowVideoSink *sink)
+{
+  HRESULT hres;
+  gboolean comInit = FALSE;
+  
+  hres = CoInitialize(0);
+  if (SUCCEEDED (hres))
+    comInit = TRUE;
+
+  /* Build our DirectShow FilterGraph, looking like: 
+   *
+   *    [ fakesrc ] -> [ sink filter ]
+   *
+   * so we can feed data in through the fakesrc.
+   *
+   * The sink filter can be one of our supported filters: VMR9 (VMR7?, EMR?)
+   */
+
+  hres = CoCreateInstance (CLSID_FilterGraph, NULL, CLSCTX_INPROC,
+      IID_IFilterGraph, (LPVOID *) & sink->filter_graph);
+  if (FAILED (hres)) {
+    GST_ERROR_OBJECT (sink, 
+          "Can't create an instance of the dshow graph manager (error=%x)", hres);
+    goto error;
+  }
+
+  sink->fakesrc = new VideoFakeSrc();
+
+  IBaseFilter *filter;
+  hres = sink->fakesrc->QueryInterface (
+          IID_IBaseFilter, (void **) &filter);
+  if (FAILED (hres)) {
+    GST_ERROR_OBJECT (sink, "Could not QI fakesrc to IBaseFilter");
+    goto error;
+  }
+
+  hres = sink->filter_graph->AddFilter (filter, L"fakesrc");
+  if (FAILED (hres)) {
+    GST_ERROR_OBJECT (sink,
+        "Can't add our fakesrc filter to the graph (error=%x)", hres);
+    goto error;
+  }
+
+  if (!gst_dshowvideosink_create_renderer (sink)) {
+    GST_ERROR_OBJECT (sink, "Could not create a video renderer");
+    goto error;
+  }
+
+  /* dump_all_pin_media_types (sink->renderer); */
+
+  hres =
+      sink->filter_graph->AddFilter (sink->renderersupport->GetFilter(),
+      L"renderer");
+  if (FAILED (hres)) {
+    GST_ERROR_OBJECT (sink, 
+          "Can't add renderer to the graph (error=%x)", hres);
+    goto error;
+  }
+
+  if (comInit)
+    CoUninitialize();
+  return TRUE;
+
+error:
+  if (sink->fakesrc) {
+    sink->fakesrc->Release();
+    sink->fakesrc = NULL;
+  }
+
+  if (sink->filter_graph) {
+    sink->filter_graph->Release();
+    sink->filter_graph = NULL;
+  }
+
+  if (sink->filter_media_event) {
+    sink->filter_media_event->Release();
+    sink->filter_media_event = NULL;
+  }
+
+  if (comInit)
+    CoUninitialize();
+
+  return FALSE;
+}
+
+static gboolean
+gst_dshowvideosink_start (GstBaseSink * bsink)
+{
+  HRESULT hres = S_FALSE;
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+
+  /* Just build the filtergraph; we don't link or otherwise configure it yet */
+  return gst_dshowvideosink_build_filtergraph (sink);
+}
+
+static gboolean
+gst_dshowvideosink_set_caps (GstBaseSink * bsink, GstCaps * caps)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+
+  if (sink->connected) {
+    /* Look at the DShow APIs for dynamically modifying the pipeline and see
+     * if we can make this work later... */
+    GST_WARNING_OBJECT (sink, "Changing caps at runtime is not yet supported");
+    return FALSE;
+  }
+
+  if (!gst_caps_to_directshow_media_type (caps, &sink->mediatype)) {
+    GST_WARNING_OBJECT (sink, "Cannot convert caps to AM_MEDIA_TYPE, rejecting");
+    return FALSE;
+  }
+
+  GST_DEBUG_OBJECT (sink, "Configuring output pin media type");
+  /* Now we have an AM_MEDIA_TYPE describing what we're going to send.
+   * We set this on our DirectShow fakesrc's output pin. 
+   */
+  sink->fakesrc->GetOutputPin()->SetMediaType (&sink->mediatype);
+  GST_DEBUG_OBJECT (sink, "Configured output pin media type");
+
+  return TRUE;
+}
+
+static gboolean
+gst_dshowvideosink_stop (GstBaseSink * bsink)
+{
+  IPin *input_pin = NULL, *output_pin = NULL;
+  HRESULT hres = S_FALSE;
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+
+  if (!sink->filter_graph) {
+    GST_WARNING_OBJECT (sink, "Cannot destroy filter graph; it doesn't exist");
+    return TRUE;
+  }
+
+  /* Release the renderer */
+  if (sink->renderersupport) {
+    delete sink->renderersupport;
+    sink->renderersupport = NULL;
+  }
+
+  /* Release our dshow fakesrc */
+  if (sink->fakesrc) {
+    sink->fakesrc->Release();
+    sink->fakesrc = NULL;
+  }
+
+  /* Release the filter graph manager */
+  if (sink->filter_graph) {
+    sink->filter_graph->Release();
+    sink->filter_graph = NULL;
+  }
+
+  return TRUE;
+}
+
+static GstFlowReturn 
+gst_dshowvideosink_render (GstBaseSink *bsink, GstBuffer *buffer)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+  GstFlowReturn ret;
+
+  if (sink->window_closed) {
+    GST_WARNING_OBJECT (sink, "Window has been closed, stopping");
+    return GST_FLOW_ERROR;
+  }
+
+  GST_DEBUG_OBJECT (sink, "Pushing buffer through fakesrc->renderer");
+  ret = sink->fakesrc->GetOutputPin()->PushBuffer (buffer);
+  GST_DEBUG_OBJECT (sink, "Done pushing buffer through fakesrc->renderer: %s", gst_flow_get_name(ret));
+
+  return ret;
+}
+
+/* TODO: How can we implement these? Figure that out... */
+static gboolean
+gst_dshowvideosink_unlock (GstBaseSink * bsink)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+
+  return TRUE;
+}
+
+static gboolean
+gst_dshowvideosink_unlock_stop (GstBaseSink * bsink)
+{
+  GstDshowVideoSink *sink = GST_DSHOWVIDEOSINK (bsink);
+
+  return TRUE;
+}
+
+/* TODO: Move all of this into generic code? */
+
+/* Helpers to format GUIDs the same way we find them in the source */
+#define GUID_FORMAT "{%.8x, %.4x, %.4x, { %.2x, %.2x, %.2x, %.2x, %.2x, %.2x, %.2x, %.2x }}"
+#define GUID_ARGS(guid) \
+    guid.Data1, guid.Data2, guid.Data3, \
+    guid.Data4[0], guid.Data4[1], guid.Data4[3], guid.Data4[4], \
+    guid.Data4[5], guid.Data4[6], guid.Data4[7], guid.Data4[8]
+
+static GstCaps *
+audio_media_type_to_caps (AM_MEDIA_TYPE *mediatype)
+{
+  return NULL;
+}
+
+static GstCaps *
+video_media_type_to_caps (AM_MEDIA_TYPE *mediatype)
+{
+  GstCaps *caps = NULL;
+
+  /* TODO: Add  RGB types. */
+  if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YUY2))
+    caps = gst_caps_new_simple ("video/x-raw-yuv", 
+            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'), NULL);
+  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_UYVY))
+    caps = gst_caps_new_simple ("video/x-raw-yuv", 
+            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'), NULL);
+  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YUYV))
+    caps = gst_caps_new_simple ("video/x-raw-yuv", 
+            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V'), NULL);
+  else if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_YV12))
+    caps = gst_caps_new_simple ("video/x-raw-yuv", 
+            "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'V', '1', '2'), NULL);
+
+  if (!caps) {
+    GST_DEBUG ("No subtype known; cannot continue");
+    return NULL;
+  }
+
+  if (IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo) &&
+          mediatype->cbFormat >= sizeof(VIDEOINFOHEADER))
+  {
+    VIDEOINFOHEADER *vh = (VIDEOINFOHEADER *)mediatype->pbFormat;
+
+	/* TODO: Set PAR here. Based on difference between source and target RECTs? 
+     *       Do we want framerate? Based on AvgTimePerFrame? */
+    gst_caps_set_simple (caps, 
+            "width", G_TYPE_INT, vh->bmiHeader.biWidth,
+            "height", G_TYPE_INT, vh->bmiHeader.biHeight,
+			NULL);
+  }
+
+  return caps;
+}
+
+
+/* Create a GstCaps object representing the same media type as
+ * this AM_MEDIA_TYPE.
+ *
+ * Returns NULL if no corresponding GStreamer type is known.
+ *
+ * May modify mediatype.
+ */
+static GstCaps *
+gst_directshow_media_type_to_caps (AM_MEDIA_TYPE *mediatype)
+{
+  GstCaps *caps = NULL;
+
+  if (IsEqualGUID (mediatype->majortype, MEDIATYPE_Video))
+    caps = video_media_type_to_caps (mediatype);
+  else if (IsEqualGUID (mediatype->majortype, MEDIATYPE_Audio))
+    caps = audio_media_type_to_caps (mediatype);
+  else {
+    GST_DEBUG ("Non audio/video media types not yet recognised, please add me: "
+            GUID_FORMAT, GUID_ARGS(mediatype->majortype));
+  }
+
+  if (caps) {
+    gchar *capsstring = gst_caps_to_string (caps);
+    GST_DEBUG ("Converted AM_MEDIA_TYPE to \"%s\"", capsstring);
+    g_free (capsstring);
+  }
+  else {
+    GST_WARNING ("Failed to convert AM_MEDIA_TYPE to caps");
+  }
+
+  return caps;
+}
+
+/* Fill in a DirectShow AM_MEDIA_TYPE structure representing the same media
+ * type as this GstCaps object.
+ *
+ * Returns FALSE if no corresponding type is known.
+ *
+ * Only operates on simple (single structure) caps.
+ */
+static gboolean
+gst_caps_to_directshow_media_type (GstCaps *caps, AM_MEDIA_TYPE *mediatype)
+{
+  GstStructure *s = gst_caps_get_structure (caps, 0);
+  const gchar *name = gst_structure_get_name (s);
+
+  gchar *capsstring = gst_caps_to_string (caps);
+  GST_DEBUG ("Converting caps \"%s\" to AM_MEDIA_TYPE", capsstring);
+  g_free (capsstring);
+
+  memset (mediatype, 0, sizeof (AM_MEDIA_TYPE));
+
+  if (!strcmp (name, "video/x-raw-yuv")) {
+    guint32 fourcc;
+	int width, height;
+    int bpp;
+
+    if (!gst_structure_get_fourcc (s, "format", &fourcc)) {
+      GST_WARNING ("Failed to convert caps, no fourcc");
+      return FALSE;
+    }
+
+	if (!gst_structure_get_int (s, "width", &width)) {
+      GST_WARNING ("Failed to convert caps, no width");
+      return FALSE;
+    }
+	if (!gst_structure_get_int (s, "height", &height)) {
+      GST_WARNING ("Failed to convert caps, no height");
+      return FALSE;
+    }
+
+    mediatype->majortype = MEDIATYPE_Video;
+    switch (fourcc) {
+      case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
+        mediatype->subtype = MEDIASUBTYPE_YUY2;
+        bpp = 16;
+        break;
+      case GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V'):
+        mediatype->subtype = MEDIASUBTYPE_YUYV;
+        bpp = 16;
+        break;
+      case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
+        mediatype->subtype = MEDIASUBTYPE_UYVY;
+        bpp = 16;
+        break;
+      case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
+        mediatype->subtype = MEDIASUBTYPE_YV12;
+        bpp = 12;
+        break;
+      default:
+        GST_WARNING ("Failed to convert caps, not a known fourcc");
+        return FALSE;
+    }
+
+    mediatype->bFixedSizeSamples = TRUE; /* Always true for raw video */
+    mediatype->bTemporalCompression = FALSE; /* Likewise, always false */
+
+    {
+      int par_n, par_d;
+      VIDEOINFOHEADER *vi = (VIDEOINFOHEADER *)CoTaskMemAlloc (sizeof (VIDEOINFOHEADER));
+      memset (vi, 0, sizeof (VIDEOINFOHEADER));
+
+      mediatype->formattype = FORMAT_VideoInfo;
+      mediatype->cbFormat = sizeof (VIDEOINFOHEADER);
+      mediatype->pbFormat = (BYTE *)vi;
+
+      mediatype->lSampleSize = width * height * bpp / 8;
+
+      GST_INFO ("Set mediatype format: size %d, sample size %d", mediatype->cbFormat, mediatype->lSampleSize);
+
+      vi->rcSource.top = 0;
+      vi->rcSource.left = 0;
+      vi->rcSource.bottom = height;
+      vi->rcSource.right = width;
+
+      vi->rcTarget.top = 0;
+      vi->rcTarget.left = 0;
+      if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d)) {
+        /* To handle non-square pixels, we set the target rectangle to a 
+         * different size than the source rectangle.
+         * There might be a better way, but this seems to work. */
+        vi->rcTarget.bottom = height;
+        vi->rcTarget.right = width * par_n / par_d;
+        GST_DEBUG ("Got PAR: set target right to %d from width %d", vi->rcTarget.right, width);
+      }
+      else {
+        GST_DEBUG ("No PAR found");
+        vi->rcTarget.bottom = height;
+        vi->rcTarget.right = width;
+      }
+
+      vi->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
+      vi->bmiHeader.biWidth = width;
+      vi->bmiHeader.biHeight = -height; /* Required to be negative. */
+      vi->bmiHeader.biPlanes = 1; /* Required to be 1 */
+      vi->bmiHeader.biBitCount = bpp;
+      vi->bmiHeader.biCompression = fourcc;
+      vi->bmiHeader.biSizeImage = width * height * bpp / 8;
+
+      /* We can safely zero these; they don't matter for our uses */
+      vi->bmiHeader.biXPelsPerMeter = 0;
+      vi->bmiHeader.biYPelsPerMeter = 0;
+      vi->bmiHeader.biClrUsed = 0;
+      vi->bmiHeader.biClrImportant = 0;
+    }
+
+    GST_DEBUG ("Successfully built AM_MEDIA_TYPE from caps");
+    return TRUE;
+  }
+
+  GST_WARNING ("Failed to convert caps, not a known caps type");
+  /* Only YUV supported so far */
+
+  return FALSE;
+}
+
+/* Plugin entry point */
+extern "C" static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  /* PRIMARY: this is the best videosink to use on windows */
+  if (!gst_element_register (plugin, "dshowvideosink",
+          GST_RANK_PRIMARY, GST_TYPE_DSHOWVIDEOSINK))
+    return FALSE;
+
+  return TRUE;
+}
+
+extern "C" GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "dshowsinkwrapper",
+    "DirectShow sink wrapper plugin",
+    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)