Add Video Orientation interface support to v4l2src.

Original commit message from CVS:
Add Video Orientation interface support to v4l2src.

5 files changed, 330 insertions, 5 deletions

diff --git a/sys/v4l2/Makefile.am b/sys/v4l2/Makefile.am
index b3f58816..d40e7fe7 100644
--- a/sys/v4l2/Makefile.am
+++ b/sys/v4l2/Makefile.am
@@ -13,6 +13,7 @@ libgstvideo4linux2_la_SOURCES = gstv4l2.c \
 				gstv4l2object.c \
 				gstv4l2src.c \
 				gstv4l2tuner.c \
+				gstv4l2vidorient.c \
 				v4l2_calls.c \
 				v4l2src_calls.c \
 				$(xv_source)
@@ -33,4 +34,4 @@ libgstvideo4linux2_la_LIBADD =   $(GST_PLUGINS_BASE_LIBS) \
 noinst_HEADERS = gstv4l2object.h v4l2_calls.h \
 		 gstv4l2src.h v4l2src_calls.h \
 		 gstv4l2tuner.h gstv4l2xoverlay.h \
-		 gstv4l2colorbalance.h
+		 gstv4l2colorbalance.h gstv4l2vidorient.h
diff --git a/sys/v4l2/gstv4l2src.c b/sys/v4l2/gstv4l2src.c
index cb6335b6..f652539e 100644
--- a/sys/v4l2/gstv4l2src.c
+++ b/sys/v4l2/gstv4l2src.c
@@ -54,6 +54,7 @@
 #include "gstv4l2colorbalance.h"
 #include "gstv4l2tuner.h"
 #include "gstv4l2xoverlay.h"
+#include "gstv4l2vidorient.h"
 
 static const GstElementDetails gst_v4l2src_details =
 GST_ELEMENT_DETAILS ("Video (video4linux2/raw) Source",
@@ -138,6 +139,7 @@ GST_IMPLEMENT_V4L2_TUNER_METHODS (GstV4l2Src, gst_v4l2src);
 #ifdef HAVE_XVIDEO
 GST_IMPLEMENT_V4L2_XOVERLAY_METHODS (GstV4l2Src, gst_v4l2src);
 #endif
+GST_IMPLEMENT_V4L2_VIDORIENT_METHODS (GstV4l2Src, gst_v4l2src);
 
 static gboolean
 gst_v4l2src_iface_supported (GstImplementsInterface * iface, GType iface_type)
@@ -146,10 +148,13 @@ gst_v4l2src_iface_supported (GstImplementsInterface * iface, GType iface_type)
 
 #ifdef HAVE_XVIDEO
   g_assert (iface_type == GST_TYPE_TUNER ||
-      iface_type == GST_TYPE_X_OVERLAY || iface_type == GST_TYPE_COLOR_BALANCE);
+      iface_type == GST_TYPE_X_OVERLAY ||
+      iface_type == GST_TYPE_COLOR_BALANCE ||
+      iface_type == GST_TYPE_VIDEO_ORIENTATION);
 #else
   g_assert (iface_type == GST_TYPE_TUNER ||
-      iface_type == GST_TYPE_COLOR_BALANCE);
+      iface_type == GST_TYPE_COLOR_BALANCE ||
+      iface_type == GST_TYPE_VIDEO_ORIENTATION);
 #endif
 
   if (v4l2object->video_fd == -1)
@@ -197,6 +202,11 @@ gst_v4l2src_init_interfaces (GType type)
     NULL,
     NULL,
   };
+  static const GInterfaceInfo v4l2_videoorientation_info = {
+    (GInterfaceInitFunc) gst_v4l2src_video_orientation_interface_init,
+    NULL,
+    NULL,
+  };
   static const GInterfaceInfo v4l2_propertyprobe_info = {
     (GInterfaceInitFunc) gst_v4l2src_property_probe_interface_init,
     NULL,
@@ -211,6 +221,8 @@ gst_v4l2src_init_interfaces (GType type)
 #endif
   g_type_add_interface_static (type,
       GST_TYPE_COLOR_BALANCE, &v4l2_colorbalance_info);
+  g_type_add_interface_static (type,
+      GST_TYPE_VIDEO_ORIENTATION, &v4l2_videoorientation_info);
   g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE,
       &v4l2_propertyprobe_info);
 }
diff --git a/sys/v4l2/gstv4l2vidorient.c b/sys/v4l2/gstv4l2vidorient.c
new file mode 100644
index 00000000..8f9c91af
--- /dev/null
+++ b/sys/v4l2/gstv4l2vidorient.c
@@ -0,0 +1,96 @@
+/* GStreamer
+ *
+ * Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * gstv4l2vidorient.c: video orientation interface implementation for V4L2
+ *
+ * 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 <gst/gst.h>
+
+#include "gstv4l2vidorient.h"
+#include "gstv4l2object.h"
+#include "v4l2_calls.h"
+#include "v4l2src_calls.h"
+
+GST_DEBUG_CATEGORY_STATIC (v4l2vo_debug);
+#define GST_CAT_DEFAULT v4l2vo_debug
+
+void
+gst_v4l2_video_orientation_interface_init (GstVideoOrientationInterface * klass)
+{
+  GST_DEBUG_CATEGORY_INIT (v4l2vo_debug, "v4l2vo", 0,
+      "V4L2 VideoOrientation interface debugging");
+}
+
+
+gboolean
+gst_v4l2_video_orientation_get_hflip (GstV4l2Object * v4l2object,
+    gboolean * flip)
+{
+
+  return gst_v4l2_get_attribute (v4l2object, V4L2_CID_HFLIP, flip);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_get_vflip (GstV4l2Object * v4l2object,
+    gboolean * flip)
+{
+  return gst_v4l2_get_attribute (v4l2object, V4L2_CID_VFLIP, flip);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_get_hcenter (GstV4l2Object * v4l2object,
+    gint * center)
+{
+  return gst_v4l2_get_attribute (v4l2object, V4L2_CID_HCENTER, center);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_get_vcenter (GstV4l2Object * v4l2object,
+    gint * center)
+{
+  return gst_v4l2_get_attribute (v4l2object, V4L2_CID_VCENTER, center);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_set_hflip (GstV4l2Object * v4l2object, gboolean flip)
+{
+  return gst_v4l2_set_attribute (v4l2object, V4L2_CID_HFLIP, flip);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_set_vflip (GstV4l2Object * v4l2object, gboolean flip)
+{
+  return gst_v4l2_set_attribute (v4l2object, V4L2_CID_VFLIP, flip);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_set_hcenter (GstV4l2Object * v4l2object, gint center)
+{
+  return gst_v4l2_set_attribute (v4l2object, V4L2_CID_HCENTER, center);
+}
+
+extern gboolean
+gst_v4l2_video_orientation_set_vcenter (GstV4l2Object * v4l2object, gint center)
+{
+  return gst_v4l2_set_attribute (v4l2object, V4L2_CID_VCENTER, center);
+}
diff --git a/sys/v4l2/gstv4l2vidorient.h b/sys/v4l2/gstv4l2vidorient.h
new file mode 100644
index 00000000..fecaee56
--- /dev/null
+++ b/sys/v4l2/gstv4l2vidorient.h
@@ -0,0 +1,127 @@
+/* GStreamer
+ *
+ * Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * gstv4l2vidorient.h: video orientation interface implementation for V4L2
+ *
+ * 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_V4L2_VIDORIENT_H__
+#define __GST_V4L2_VIDORIENT_H__
+
+#include <gst/gst.h>
+#include <gst/interfaces/videoorientation.h>
+
+#include "gstv4l2object.h"
+
+G_BEGIN_DECLS
+
+extern gboolean
+gst_v4l2_video_orientation_get_hflip (GstV4l2Object *v4l2object, gboolean *flip);
+extern gboolean
+gst_v4l2_video_orientation_get_vflip (GstV4l2Object *v4l2object, gboolean *flip);
+extern gboolean
+gst_v4l2_video_orientation_get_hcenter (GstV4l2Object *v4l2object, gint *center);
+extern gboolean
+gst_v4l2_video_orientation_get_vcenter (GstV4l2Object *v4l2object, gint *center);
+
+extern gboolean
+gst_v4l2_video_orientation_set_hflip (GstV4l2Object *v4l2object, gboolean flip);
+extern gboolean
+gst_v4l2_video_orientation_set_vflip (GstV4l2Object *v4l2object, gboolean flip);
+extern gboolean
+gst_v4l2_video_orientation_set_hcenter (GstV4l2Object *v4l2object, gint center);
+extern gboolean
+gst_v4l2_video_orientation_set_vcenter (GstV4l2Object *v4l2object, gint center);
+
+
+extern void
+gst_v4l2_video_orientation_interface_init (GstVideoOrientationInterface * klass);
+
+#define GST_IMPLEMENT_V4L2_VIDORIENT_METHODS(Type, interface_as_function)                         \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_get_hflip (GstVideoOrientation *vo, gboolean *flip)       \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_get_hflip (this->v4l2object, flip);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_get_vflip (GstVideoOrientation *vo, gboolean *flip)       \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_get_vflip (this->v4l2object, flip);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_get_hcenter (GstVideoOrientation *vo, gint *center)       \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_get_hcenter (this->v4l2object, center);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_get_vcenter (GstVideoOrientation *vo, gint *center)       \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_get_vcenter (this->v4l2object, center);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_set_hflip (GstVideoOrientation *vo, gboolean flip)        \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_set_hflip (this->v4l2object, flip);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_set_vflip (GstVideoOrientation *vo, gboolean flip)        \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_set_vflip (this->v4l2object, flip);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_set_hcenter (GstVideoOrientation *vo, gint center)        \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_set_hcenter (this->v4l2object, center);		          \
+  }                                                                                               \
+                                                                                                  \
+  static gboolean                                                                                 \
+  interface_as_function ## _video_orientation_set_vcenter (GstVideoOrientation *vo, gint center)        \
+  {                                                                                               \
+    Type *this = (Type*) vo;                                                                      \
+    return gst_v4l2_video_orientation_set_vcenter (this->v4l2object, center);		          \
+  }                                                                                               \
+                                                                                                  \
+  void                                                                                            \
+  interface_as_function ## _video_orientation_interface_init (GstVideoOrientationInterface * klass)          \
+  {                                                                                               \
+    /* default virtual functions */                                                               \
+    klass->get_hflip   = interface_as_function ## _video_orientation_get_hflip;                   \
+    klass->get_vflip   = interface_as_function ## _video_orientation_get_vflip;                   \
+    klass->get_hcenter = interface_as_function ## _video_orientation_get_hcenter;                 \
+    klass->get_vcenter = interface_as_function ## _video_orientation_get_vcenter;                 \
+    klass->set_hflip   = interface_as_function ## _video_orientation_set_hflip;                   \
+    klass->set_vflip   = interface_as_function ## _video_orientation_set_vflip;                   \
+    klass->set_hcenter = interface_as_function ## _video_orientation_set_hcenter;                 \
+    klass->set_vcenter = interface_as_function ## _video_orientation_set_vcenter;                 \
+  }
+
+#endif /* __GST_V4L2_VIDORIENT_H__ */
diff --git a/tests/icles/v4l2src-test.c b/tests/icles/v4l2src-test.c
index 84f2e7cd..9689bfbf 100644
--- a/tests/icles/v4l2src-test.c
+++ b/tests/icles/v4l2src-test.c
@@ -5,6 +5,7 @@
 #include <gst/gst.h>
 #include <gst/interfaces/tuner.h>
 #include <gst/interfaces/colorbalance.h>
+#include <gst/interfaces/videoorientation.h>
 
 GstElement *pipeline, *source, *sink;
 GMainLoop *loop;
@@ -17,6 +18,7 @@ print_options ()
   printf ("i - to change the input\n");
   printf ("n - to change the norm\n");
   printf ("c - list color balance\n");
+  printf ("v - change video orientarion\n");
   printf ("e - to exit\n");
 }
 
@@ -34,7 +36,8 @@ run_options (char opt)
 
       freq = gst_tuner_get_frequency (tuner, channel);
 
-      printf ("type the new frequency (current = %lu) (-1 to cancel): ", freq);
+      printf ("\ntype the new frequency (current = %lu) (-1 to cancel): ",
+          freq);
       scanf ("%u", &freq);
       if (freq != -1)
         gst_tuner_set_frequency (tuner, channel, freq);
@@ -134,13 +137,15 @@ run_options (char opt)
 
       controls = gst_color_balance_list_channels (balance);
 
+      printf ("\n");
+
       if (controls == NULL) {
         printf ("There is no list of colorbalance controls\n");
         goto done;
       }
 
       if (controls) {
-        printf ("\nlist of controls:\n");
+        printf ("list of controls:\n");
         for (item = controls, index = 0; item != NULL;
             item = item->next, ++index) {
           channel = item->data;
@@ -165,6 +170,90 @@ run_options (char opt)
         gst_color_balance_set_value (balance, channel, new_value);
       }
     }
+    case 'v':
+    {
+      GstVideoOrientation *vidorient = GST_VIDEO_ORIENTATION (source);
+      gboolean flip = FALSE;
+      gint center = 0;
+
+      printf ("\n");
+
+      if (gst_video_orientation_get_hflip (vidorient, &flip)) {
+        gint new_value;
+
+        printf ("Horizontal flip is %s\n", flip ? "on" : "off");
+        printf ("\ntype 1 to toggle (-1 to cancel): ");
+        scanf ("%d", &new_value);
+        if (new_value == 1) {
+          flip = !flip;
+          if (gst_video_orientation_set_hflip (vidorient, flip)) {
+            gst_video_orientation_get_hflip (vidorient, &flip);
+            printf ("Now horizontal flip is %s\n", flip ? "on" : "off");
+          } else {
+            printf ("Error toggling horizontal flip\n");
+          }
+        } else {
+        }
+      } else {
+        printf ("Horizontal flip control not available\n");
+      }
+
+      if (gst_video_orientation_get_vflip (vidorient, &flip)) {
+        gint new_value;
+
+        printf ("\nVertical flip is %s\n", flip ? "on" : "off");
+        printf ("\ntype 1 to toggle (-1 to cancel): ");
+        scanf ("%d", &new_value);
+        if (new_value == 1) {
+          flip = !flip;
+          if (gst_video_orientation_set_vflip (vidorient, flip)) {
+            gst_video_orientation_get_vflip (vidorient, &flip);
+            printf ("Now vertical flip is %s\n", flip ? "on" : "off");
+          } else {
+            printf ("Error toggling vertical flip\n");
+          }
+        } else {
+        }
+      } else {
+        printf ("Vertical flip control not available\n");
+      }
+
+      if (gst_video_orientation_get_hcenter (vidorient, &center)) {
+        printf ("Horizontal center is %d\n", center);
+        printf ("\ntype the new horizontal center value (-1 to cancel): ");
+        scanf ("%d", &center);
+        if (center != -1) {
+          if (gst_video_orientation_set_hcenter (vidorient, center)) {
+            gst_video_orientation_get_hcenter (vidorient, &center);
+            printf ("Now horizontal center is %d\n", center);
+          } else {
+            printf ("Error setting horizontal center\n");
+          }
+        } else {
+        }
+      } else {
+        printf ("Horizontal center control not available\n");
+      }
+
+      if (gst_video_orientation_get_vcenter (vidorient, &center)) {
+        printf ("Vertical center is %d\n", center);
+        printf ("\ntype the new vertical center value (-1 to cancel): ");
+        scanf ("%d", &center);
+        if (center != -1) {
+          if (gst_video_orientation_set_vcenter (vidorient, center)) {
+            gst_video_orientation_get_vcenter (vidorient, &center);
+            printf ("Now vertical center is %d\n", center);
+          } else {
+            printf ("Error setting vertical center\n");
+          }
+        } else {
+        }
+      } else {
+        printf ("Vertical center control not available\n");
+      }
+
+    }
+      break;
       break;
     default:
       if (opt != 10)