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, 76 insertions, 0 deletions

diff --git a/sys/winks/gstksvideodevice.h b/sys/winks/gstksvideodevice.h
new file mode 100644
index 00000000..99024e15
--- /dev/null
+++ b/sys/winks/gstksvideodevice.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 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 __GST_KS_VIDEO_DEVICE_H__
+#define __GST_KS_VIDEO_DEVICE_H__
+
+#include <gst/gst.h>
+
+#include <windows.h>
+#include <ks.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_KS_VIDEO_DEVICE \
+  (gst_ks_video_device_get_type ())
+#define GST_KS_VIDEO_DEVICE(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_KS_VIDEO_DEVICE, GstKsVideoDevice))
+#define GST_KS_VIDEO_DEVICE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_KS_VIDEO_DEVICE, GstKsVideoDeviceClass))
+#define GST_IS_KS_VIDEO_DEVICE(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_KS_VIDEO_DEVICE))
+#define GST_IS_KS_VIDEO_DEVICE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_KS_VIDEO_DEVICE))
+
+typedef struct _GstKsVideoDevice      GstKsVideoDevice;
+typedef struct _GstKsVideoDeviceClass GstKsVideoDeviceClass;
+
+struct _GstKsVideoDevice
+{
+  GObject parent;
+};
+
+struct _GstKsVideoDeviceClass
+{
+  GObjectClass parent_class;
+};
+
+GType gst_ks_video_device_get_type (void);
+
+gboolean gst_ks_video_device_open (GstKsVideoDevice * self);
+void gst_ks_video_device_close (GstKsVideoDevice * self);
+
+GstCaps * gst_ks_video_device_get_available_caps (GstKsVideoDevice * self);
+gboolean gst_ks_video_device_has_caps (GstKsVideoDevice * self);
+gboolean gst_ks_video_device_set_caps (GstKsVideoDevice * self, GstCaps * caps);
+
+gboolean gst_ks_video_device_set_state (GstKsVideoDevice * self, KSSTATE state);
+
+guint gst_ks_video_device_get_frame_size (GstKsVideoDevice * self);
+GstClockTime gst_ks_video_device_get_duration (GstKsVideoDevice * self);
+gboolean gst_ks_video_device_get_latency (GstKsVideoDevice * self, GstClockTime * min_latency, GstClockTime * max_latency);
+
+GstFlowReturn gst_ks_video_device_read_frame (GstKsVideoDevice * self, guint8 * buf, gulong buf_size, gulong * bytes_read, GstClockTime * presentation_time, gulong * error_code, gchar ** error_str);
+void gst_ks_video_device_postprocess_frame (GstKsVideoDevice * self, guint8 * buf, guint buf_size);
+void gst_ks_video_device_cancel (GstKsVideoDevice * self);
+void gst_ks_video_device_cancel_stop (GstKsVideoDevice * self);
+
+G_END_DECLS
+
+#endif /* __GST_KS_VIDEO_DEVICE_H__ */