New plugin for low-latency video capture on Windows (#519935).

Original commit message from CVS:
* configure.ac:
* sys/Makefile.am:
* sys/winks/Makefile.am:
* sys/winks/gstksclock.c:
* sys/winks/gstksclock.h:
* sys/winks/gstksvideodevice.c:
* sys/winks/gstksvideodevice.h:
* sys/winks/gstksvideosrc.c:
* sys/winks/gstksvideosrc.h:
* sys/winks/kshelpers.c:
* sys/winks/kshelpers.h:
* sys/winks/ksvideohelpers.c:
* sys/winks/ksvideohelpers.h:
New plugin for low-latency video capture on Windows (#519935).
Uses Kernel Streaming, the lowest level API for doing video capture
on Windows (more or less just raw ioctls).

1 files changed, 64 insertions, 0 deletions

diff --git a/sys/winks/ksvideohelpers.h b/sys/winks/ksvideohelpers.h
new file mode 100644
index 00000000..7be539ae
--- /dev/null
+++ b/sys/winks/ksvideohelpers.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2007 Haakon Sporsheim <hakon.sporsheim@tandberg.com>
+ *               2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.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 __KSVIDEOHELPERS_H__
+#define __KSVIDEOHELPERS_H__
+
+#include <gst/gst.h>
+#include <windows.h>
+#include <ks.h>
+#include <ksmedia.h>
+
+G_BEGIN_DECLS
+
+DEFINE_GUID(MEDIASUBTYPE_I420, 0x30323449, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71);
+
+typedef struct _KsVideoMediaType KsVideoMediaType;
+
+/**
+ * A structure that contain metadata about capabilities
+ * for both KS and GStreamer for video only.
+ */
+struct _KsVideoMediaType
+{
+  guint pin_id;
+
+  const KSDATARANGE * range;
+  const KS_VIDEO_STREAM_CONFIG_CAPS vscc;
+
+  guint8 * format;
+  guint format_size;
+
+  guint sample_size;
+
+  GstCaps * translated_caps;
+};
+
+KsVideoMediaType * ks_video_media_type_dup (KsVideoMediaType * media_type);
+void ks_video_media_type_free (KsVideoMediaType * media_type);
+GList * ks_video_probe_filter_for_caps (HANDLE filter_handle);
+KSPIN_CONNECT * ks_video_create_pin_conn_from_media_type (KsVideoMediaType * media_type);
+gboolean ks_video_fixate_media_type (const KSDATARANGE * range, guint8 * format, gint width, gint height, gint fps_n, gint fps_d);
+
+GstCaps * ks_video_get_all_caps (void);
+
+G_END_DECLS
+
+#endif /* __KSVIDEOHELPERS_H__ */