Add a new win32 videosink. Uses the DirectShow renderers for high-performance video rendering on win32.

Original commit message from CVS:
* configure.ac:
* sys/Makefile.am:
* sys/dshowvideosink/Makefile.am:
* sys/dshowvideosink/README:
* sys/dshowvideosink/dshowvideofakesrc.cpp:
* sys/dshowvideosink/dshowvideofakesrc.h:
* sys/dshowvideosink/dshowvideosink.cpp:
* sys/dshowvideosink/dshowvideosink.h:
Add a new win32 videosink. Uses the DirectShow renderers for
high-performance video rendering on win32.
Currently only supports some YUV formats.
Rank PRIMARY, since it's much more useful for the common cases that the
directdraw sink (which only does RGB).

8 files changed, 2015 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index 5efa9357..a8a66bb7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1188,6 +1188,7 @@ gst-libs/gst/dshow/Makefile
 sys/Makefile
 sys/dshowdecwrapper/Makefile
 sys/dshowsrcwrapper/Makefile
+sys/dshowvideosink/Makefile
 sys/dvb/Makefile
 sys/fbdev/Makefile
 sys/oss4/Makefile
@@ -1219,6 +1220,7 @@ ext/Makefile
 ext/nas/Makefile
 ext/mpeg2enc/Makefile
 ext/mplex/Makefile
+ext/mozilla/Makefile
 ext/musepack/Makefile
 ext/musicbrainz/Makefile
 ext/mythtv/Makefile
diff --git a/sys/Makefile.am b/sys/Makefile.am
index aa77cd6e..5a7e2a04 100644
--- a/sys/Makefile.am
+++ b/sys/Makefile.am
@@ -54,5 +54,6 @@ endif
 
 SUBDIRS = $(DVB_DIR) $(FBDEV_DIR) $(OSS4_DIR) $(QT_DIR) $(VCD_DIR) $(WININET_DIR)
 
-DIST_SUBDIRS = dvb fbdev dshowdecwrapper dshowsrcwrapper oss4 qtwrapper vcd wininet
+DIST_SUBDIRS = dvb fbdev dshowdecwrapper dshowsrcwrapper dshowvideosink \
+			   oss4 qtwrapper vcd wininet
 
diff --git a/sys/dshowvideosink/Makefile.am b/sys/dshowvideosink/Makefile.am
new file mode 100644
index 00000000..1fa81b75
--- /dev/null
+++ b/sys/dshowvideosink/Makefile.am
@@ -0,0 +1,9 @@
+# This plugin isn't buildable with autotools at this point in time, so just
+# ensure everything's listed in EXTRA_DIST
+
+EXTRA_DIST = \
+			 dshowvideofakesrc.cpp \
+			 dshowvideofakesrc.h \
+			 dshowvideosink.cpp \
+			 dshowvideosink.h
+
diff --git a/sys/dshowvideosink/README b/sys/dshowvideosink/README
new file mode 100644
index 00000000..af296dc9
--- /dev/null
+++ b/sys/dshowvideosink/README
@@ -0,0 +1,5 @@
+To build this, you'll require the DirectShow base classes. These are supplied
+in the Windows SDK, but under Samples\Multimedia\DirectShow\BaseClasses
+
+Once you've built that, you should be able to figure out the rest...
+
diff --git a/sys/dshowvideosink/dshowvideofakesrc.cpp b/sys/dshowvideosink/dshowvideofakesrc.cpp
new file mode 100644
index 00000000..40194123
--- /dev/null
+++ b/sys/dshowvideosink/dshowvideofakesrc.cpp
@@ -0,0 +1,281 @@
+/* GStreamer

+ * Copyright (C) 2008 Michael Smith <msmith@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.

+ */

+

+#include "dshowvideofakesrc.h"

+

+// {A0A5CF33-BD0C-4158-9A56-3011DEE3AF6B}

+const GUID CLSID_VideoFakeSrc = 

+{ 0xa0a5cf33, 0xbd0c, 0x4158, { 0x9a, 0x56, 0x30, 0x11, 0xde, 0xe3, 0xaf, 0x6b } };

+

+/* output pin*/

+VideoFakeSrcPin::VideoFakeSrcPin (CBaseFilter *pFilter, CCritSec *sec, HRESULT *hres):

+  CBaseOutputPin("VideoFakeSrcPin", pFilter, sec, hres, L"output")

+{

+}

+

+VideoFakeSrcPin::~VideoFakeSrcPin()

+{

+}

+

+HRESULT VideoFakeSrcPin::GetMediaType(int iPosition, CMediaType *pMediaType)

+{

+  GST_DEBUG ("GetMediaType(%d) called", iPosition);

+  if(iPosition == 0) {

+    *pMediaType = m_MediaType;

+    return S_OK;

+  }

+  

+  return VFW_S_NO_MORE_ITEMS;

+}

+

+/* This seems to be called to notify us of the actual media type being used,

+ * even though SetMediaType isn't called. How bizarre! */

+HRESULT VideoFakeSrcPin::CheckMediaType(const CMediaType *pmt)

+{

+    GST_DEBUG ("CheckMediaType called: %p", pmt);

+

+    /* The video renderer will request a different stride, which we must accept.

+     * So, we accept arbitrary strides (and do memcpy() to convert if needed),

+     * and require the rest of the media type to match

+     */

+    if (IsEqualGUID(pmt->majortype,m_MediaType.majortype) &&

+        IsEqualGUID(pmt->subtype,m_MediaType.subtype) &&

+        IsEqualGUID(pmt->formattype,m_MediaType.formattype) &&

+        pmt->cbFormat >= m_MediaType.cbFormat)

+    {

+      if (IsEqualGUID(pmt->formattype, FORMAT_VideoInfo)) {

+        VIDEOINFOHEADER *newvh = (VIDEOINFOHEADER *)pmt->pbFormat;

+        VIDEOINFOHEADER *curvh = (VIDEOINFOHEADER *)m_MediaType.pbFormat;

+

+        if ((memcmp ((void *)&newvh->rcSource, (void *)&curvh->rcSource, sizeof (RECT)) == 0) &&

+            (memcmp ((void *)&newvh->rcTarget, (void *)&curvh->rcTarget, sizeof (RECT)) == 0) &&

+            (newvh->bmiHeader.biCompression == curvh->bmiHeader.biCompression) &&

+            (newvh->bmiHeader.biHeight == curvh->bmiHeader.biHeight) &&

+            (newvh->bmiHeader.biWidth >= curvh->bmiHeader.biWidth))

+        {

+          GST_DEBUG ("CheckMediaType has same media type, width %d (%d image)", newvh->bmiHeader.biWidth, curvh->bmiHeader.biWidth);

+        

+          /* OK, compatible! */

+          return S_OK;

+        }

+        else {

+          GST_WARNING ("Looked similar, but aren't...");

+        }

+      }

+      

+    }

+    GST_WARNING ("Different media types, FAILING!");

+    return S_FALSE;

+}

+

+HRESULT VideoFakeSrcPin::DecideBufferSize (IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)

+{

+  ALLOCATOR_PROPERTIES properties;

+  GST_DEBUG ("Required allocator properties: %d, %d, %d, %d", 

+        ppropInputRequest->cbAlign, ppropInputRequest->cbBuffer, 

+        ppropInputRequest->cbPrefix, ppropInputRequest->cBuffers);

+

+  ppropInputRequest->cbBuffer = m_SampleSize;

+  ppropInputRequest->cBuffers = 1;

+

+  /* First set the buffer descriptions we're interested in */

+  HRESULT hres = pAlloc->SetProperties(ppropInputRequest, &properties);

+  GST_DEBUG ("Actual Allocator properties: %d, %d, %d, %d", 

+        properties.cbAlign, properties.cbBuffer, 

+        properties.cbPrefix, properties.cBuffers);

+

+  /* Then actually allocate the buffers */

+  pAlloc->Commit();

+

+  return S_OK;

+}

+

+STDMETHODIMP

+VideoFakeSrcPin::Notify(IBaseFilter * pSender, Quality q)

+{

+  /* Implementing this usefully is not required, but the base class

+   * has an assertion here... */

+  /* TODO: Map this to GStreamer QOS events? */

+  return E_NOTIMPL;

+}

+

+STDMETHODIMP VideoFakeSrcPin::SetMediaType (AM_MEDIA_TYPE *pmt)

+{

+  m_MediaType.Set (*pmt);

+  m_SampleSize = m_MediaType.GetSampleSize();

+

+  GST_DEBUG ("SetMediaType called. SampleSize is %d", m_SampleSize);

+

+  return S_OK;

+}

+

+/* If the destination buffer is a different shape (strides, etc.) from the source

+ * buffer, we have to copy. Do that here, for supported video formats.

+ *

+ * TODO: When possible (when these things DON'T differ), we should buffer-alloc the

+ * final output buffer, and not do this copy */

+STDMETHODIMP VideoFakeSrcPin::CopyToDestinationBuffer (byte *srcbuf, byte *dstbuf)

+{

+  VIDEOINFOHEADER *vh = (VIDEOINFOHEADER *)m_MediaType.pbFormat;

+  GST_DEBUG ("Rendering a frame");

+

+  byte *src, *dst;

+  int dststride, srcstride, rows;

+  guint32 fourcc = vh->bmiHeader.biCompression;

+

+  /* biHeight is always negative; we don't want that. */

+  int height = ABS (vh->bmiHeader.biHeight);

+  int width = vh->bmiHeader.biWidth;

+

+  /* YUY2 is the preferred layout for DirectShow, so we will probably get this

+   * most of the time */

+  if ((fourcc == GST_MAKE_FOURCC ('Y', 'U', 'Y', '2')) ||

+      (fourcc == GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V')) ||

+      (fourcc == GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'))) 

+  {

+    /* Nice and simple */

+    int srcstride = GST_ROUND_UP_4 (vh->rcSource.right * 2);

+    int dststride = width * 2;

+

+    for (int i = 0; i < height; i++) {

+      memcpy (dstbuf + dststride * i, srcbuf + srcstride * i, srcstride);

+    }

+  }

+  else if (fourcc == GST_MAKE_FOURCC ('Y', 'V', '1', '2')) {

+    for (int component = 0; component < 3; component++) {

+      // TODO: Get format properly rather than hard-coding it. Use gst_video_* APIs *?

+      if (component == 0) {

+        srcstride = GST_ROUND_UP_4 (vh->rcSource.right);

+        src = srcbuf;

+      }

+      else {

+        srcstride = GST_ROUND_UP_4 ( GST_ROUND_UP_2 (vh->rcSource.right) / 2);

+        if (component == 1)

+          src = srcbuf + GST_ROUND_UP_4 (vh->rcSource.right) * GST_ROUND_UP_2 (vh->rcSource.bottom);

+        else

+          src = srcbuf + GST_ROUND_UP_4 (vh->rcSource.right) * GST_ROUND_UP_2 (vh->rcSource.bottom) +

+                  srcstride * (GST_ROUND_UP_2 (vh->rcSource.bottom) / 2);

+      }

+

+      /* Is there a better way to do this? This is ICK! */

+      if (component == 0) {

+        dststride = width;

+        dst = dstbuf;

+        rows = height;

+      } else if (component == 1) {

+        dststride = width / 2;

+        dst = dstbuf + width * height;

+        rows = height/2;

+      }

+      else {

+        dststride = width / 2;

+        dst = dstbuf + width * height +

+                       width/2 * height/2;

+        rows = height/2;

+      }

+

+      for (int i = 0; i < rows; i++) {

+        memcpy (dst + i * dststride, src + i * srcstride, srcstride);

+      }

+    }

+  }

+

+  return S_OK;

+}

+

+

+GstFlowReturn VideoFakeSrcPin::PushBuffer(GstBuffer *buffer)

+{

+  IMediaSample *pSample = NULL;

+

+  byte *data = GST_BUFFER_DATA (buffer);

+  

+  /* TODO: Use more of the arguments here? */

+  HRESULT hres = GetDeliveryBuffer(&pSample, NULL, NULL, 0);

+  if (SUCCEEDED (hres))

+  {

+    BYTE *sample_buffer;

+    AM_MEDIA_TYPE *mediatype;

+

+    pSample->GetPointer(&sample_buffer);

+    pSample->GetMediaType(&mediatype);

+    if (mediatype)

+      SetMediaType (mediatype);

+

+    if(sample_buffer)

+    {

+      /* Copy to the destination stride. 

+       * This is not just a simple memcpy because of the different strides. 

+       * TODO: optimise for the same-stride case and avoid the copy entirely. 

+       */

+      CopyToDestinationBuffer (data, sample_buffer);

+    }

+

+    pSample->SetDiscontinuity(FALSE); /* Decoded frame; unimportant */

+    pSample->SetSyncPoint(TRUE); /* Decoded frame; always a valid syncpoint */

+    pSample->SetPreroll(FALSE); /* For non-displayed frames. 

+                                   Not used in GStreamer */

+

+    /* Disable synchronising on this sample. We instead let GStreamer handle 

+     * this at a higher level, inside BaseSink. */

+    pSample->SetTime(NULL, NULL);

+

+    hres = Deliver(pSample);

+    pSample->Release();

+

+    if (SUCCEEDED (hres))

+      return GST_FLOW_OK;

+    else if (hres == VFW_E_NOT_CONNECTED)

+      return GST_FLOW_NOT_LINKED;

+    else

+      return GST_FLOW_ERROR;

+  }

+  else {

+    GST_WARNING ("Could not get sample for delivery to sink: %x", hres);

+    return GST_FLOW_ERROR;

+  }

+}

+

+STDMETHODIMP VideoFakeSrcPin::Flush ()

+{

+  DeliverBeginFlush();

+  DeliverEndFlush();

+  return S_OK;

+}

+

+VideoFakeSrc::VideoFakeSrc() : CBaseFilter("VideoFakeSrc", NULL, &m_critsec, CLSID_VideoFakeSrc)

+{

+  HRESULT hr = S_OK;

+  m_pOutputPin = new VideoFakeSrcPin ((CSource *)this, &m_critsec, &hr);

+}

+

+int VideoFakeSrc::GetPinCount()

+{

+  return 1;

+}

+

+CBasePin *VideoFakeSrc::GetPin(int n)

+{

+  return (CBasePin *)m_pOutputPin;

+}

+

+VideoFakeSrcPin *VideoFakeSrc::GetOutputPin()

+{

+  return m_pOutputPin;

+}

diff --git a/sys/dshowvideosink/dshowvideofakesrc.h b/sys/dshowvideosink/dshowvideofakesrc.h
new file mode 100644
index 00000000..afbb1bfe
--- /dev/null
+++ b/sys/dshowvideosink/dshowvideofakesrc.h
@@ -0,0 +1,70 @@
+/* GStreamer
+ * Copyright (C) 2008 Michael Smith <msmith@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.
+ */
+#ifndef __DSHOWVIDEOFAKESRC_H__
+#define __DSHOWVIDEOFAKESRC_H__
+
+#include <streams.h>
+#include <gst/gst.h>
+
+class VideoFakeSrcPin : public CBaseOutputPin
+{
+protected:
+  /* members */
+  CMediaType m_MediaType;
+  unsigned int m_SampleSize;
+
+public:
+  /* methods */
+  VideoFakeSrcPin (CBaseFilter *pFilter, CCritSec *sec, HRESULT *hres);
+  ~VideoFakeSrcPin ();
+
+  STDMETHODIMP CopyToDestinationBuffer (byte *src, byte *dst);
+  GstFlowReturn (PushBuffer) (GstBuffer *buf);
+
+  /* Overrides */
+  virtual HRESULT CheckMediaType(const CMediaType *pmt);
+  HRESULT GetMediaType(int iPosition, CMediaType *pMediaType);
+  virtual HRESULT DecideBufferSize (IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest);
+  STDMETHOD (SetMediaType) (AM_MEDIA_TYPE *pmt);
+  STDMETHOD (Flush) ();
+  STDMETHODIMP Notify(IBaseFilter * pSender, Quality q);
+
+
+};
+
+class VideoFakeSrc : public CBaseFilter
+{
+private:
+  /* members */
+  CCritSec m_critsec;
+  VideoFakeSrcPin *m_pOutputPin;
+
+public:
+  /* methods */
+  VideoFakeSrc  (void);
+  ~VideoFakeSrc (void) {};
+
+  VideoFakeSrcPin *GetOutputPin();
+
+  /* Overrides */
+  int       GetPinCount();
+  CBasePin *GetPin(int n);
+};
+
+#endif /* __DSHOWVIDEOFAKESRC_H__ */
\ No newline at end of file
diff --git a/sys/dshowvideosink/dshowvideosink.cpp b/sys/dshowvideosink/dshowvideosink.cpp
new file mode 100644
index 00000000..fb8ea16d
--- /dev/null
+++ b/sys/dshowvideosink/dshowvideosink.cpp
@@ -0,0 +1,1542 @@
+/* GStreamer

+ * Copyright (C) 2008 Michael Smith <msmith@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",

+    "Michael Smith <msmith@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)

+{

+  gst_dshowvideosink_clear (sink);

+

+  CoInitializeEx (NULL, COINIT_MULTITHREADED);

+

+  /* 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);

+

+  CoUninitialize ();

+

+  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)

diff --git a/sys/dshowvideosink/dshowvideosink.h b/sys/dshowvideosink/dshowvideosink.h
new file mode 100644
index 00000000..a1a35d11
--- /dev/null
+++ b/sys/dshowvideosink/dshowvideosink.h
@@ -0,0 +1,104 @@
+/* GStreamer
+ * Copyright (C) 2008 Michael Smith <msmith@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.
+ */
+
+#ifndef __DSHOWVIDEOSINK_H__
+#define __DSHOWVIDEOSINK_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasesink.h>
+
+#include "dshowvideofakesrc.h"
+
+#include <dshow.h>
+
+#include "d3d9.h"
+#include "vmr9.h"
+
+#pragma warning( disable : 4090 4024)
+
+G_BEGIN_DECLS
+#define GST_TYPE_DSHOWVIDEOSINK              (gst_dshowvideosink_get_type())
+#define GST_DSHOWVIDEOSINK(obj)              (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DSHOWVIDEOSINK,GstDshowVideoSink))
+#define GST_DSHOWVIDEOSINK_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DSHOWVIDEOSINK,GstDshowVideoSinkClass))
+#define GST_IS_DSHOWVIDEOSINK(obj)           (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DSHOWVIDEOSINK))
+#define GST_IS_DSHOWVIDEOSINK_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DSHOWVIDEOSINK))
+typedef struct _GstDshowVideoSink GstDshowVideoSink;
+typedef struct _GstDshowVideoSinkClass GstDshowVideoSinkClass;
+
+/* Renderer-specific support classes */
+class RendererSupport
+{
+public:
+  virtual const char *GetName() = 0;
+  virtual IBaseFilter *GetFilter() = 0;
+  virtual gboolean Configure() = 0;
+  virtual gboolean SetRendererWindow(HWND window) = 0;
+  virtual void PaintWindow() = 0;
+  virtual void MoveWindow() = 0;
+  virtual void DestroyWindow() = 0;
+  virtual void DisplayModeChanged() = 0;
+};
+
+struct _GstDshowVideoSink
+{
+  GstBaseSink sink;
+
+  /* Preferred renderer to use: VM9 or VMR */
+  char *preferredrenderer;
+
+   /* The filter graph (DirectShow equivalent to pipeline */
+  IFilterGraph *filter_graph;
+
+  /* Renderer wrapper (EVR, VMR9, or VMR) and support code */
+  RendererSupport *renderersupport;
+
+  /* Our fakesrc filter */
+  VideoFakeSrc *fakesrc;
+
+  /* DirectShow description of media type (equivalent of GstCaps) */
+  AM_MEDIA_TYPE mediatype;
+
+  gboolean keep_aspect_ratio;
+  gboolean full_screen;
+
+  /* If the window is closed, we set this and error out */
+  gboolean window_closed;
+
+  /* The video window set through GstXOverlay */
+  HWND window_id;
+
+  gboolean connected;
+
+  /* If we create our own window, we run it from another thread */
+  GThread *window_thread;
+  HANDLE window_created_signal;
+
+  /* If we use an app-supplied window, we need to hook its WNDPROC */
+  WNDPROC prevWndProc;
+};
+
+struct _GstDshowVideoSinkClass
+{
+  GstBaseSinkClass parent_class;
+};
+
+GType gst_dshowvideosink_get_type (void);
+
+G_END_DECLS
+#endif /* __DSHOWVIDEOSINK_H__ */