[aravis] Add arv_camera_set_pixel_format_from_string.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 3d7b098285a258e2b28144688f684cb2e684ac95
Author: Jure Varlec <jure varlec ad-vega si>
Date:   Sun Jul 1 18:41:54 2012 +0200

    Add arv_camera_set_pixel_format_from_string.

 src/arvcamera.c |   16 ++++++++++++++++
 src/arvcamera.h |    1 +
 2 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/src/arvcamera.c b/src/arvcamera.c
index 66838c2..cecb927 100644
--- a/src/arvcamera.c
+++ b/src/arvcamera.c
@@ -328,6 +328,22 @@ arv_camera_set_pixel_format (ArvCamera *camera, ArvPixelFormat format)
 }
 
 /**
+ * arv_camera_set_pixel_format_from_string:
+ * @camera: a #ArvCamera
+ * @format: pixel format
+ *
+ * Defines pixel format described by a string.
+ */
+
+void
+arv_camera_set_pixel_format_from_string (ArvCamera *camera, const char * format)
+{
+        g_return_if_fail (ARV_IS_CAMERA (camera));
+
+        arv_device_set_string_feature_value (camera->priv->device, "PixelFormat", format);
+}
+
+/**
  * arv_camera_get_pixel_format:
  * @camera: a #ArvCamera
  *
diff --git a/src/arvcamera.h b/src/arvcamera.h
index 18b209a..7e0b9e8 100644
--- a/src/arvcamera.h
+++ b/src/arvcamera.h
@@ -72,6 +72,7 @@ void		arv_camera_set_binning		(ArvCamera *camera, gint dx, gint dy);
 void		arv_camera_get_binning		(ArvCamera *camera, gint *dx, gint *dy);
 
 void 		arv_camera_set_pixel_format 		(ArvCamera *camera, ArvPixelFormat format);
+void            arv_camera_set_pixel_format_from_string (ArvCamera *camera, const char * format);
 ArvPixelFormat 	arv_camera_get_pixel_format 		(ArvCamera *camera);
 const char * 	arv_camera_get_pixel_format_as_string 	(ArvCamera *camera);
 gint64 *	arv_camera_get_available_pixel_formats 	(ArvCamera *camera, guint *n_pixel_formats);