[aravis] camera: add set_trigger_source and get_trigger_source.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 3c3cc3753d4db628fb0ecdeb3f757e67a1e9dc3f
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Thu Feb 16 18:55:33 2012 +0100

    camera: add set_trigger_source and get_trigger_source.

 docs/reference/aravis/aravis-sections.txt |    3 +-
 src/arvcamera.c                           |   36 +++++++++++++++++++++++++++++
 src/arvcamera.h                           |    2 +
 3 files changed, 40 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/aravis/aravis-sections.txt b/docs/reference/aravis/aravis-sections.txt
index f9b0a38..302598d 100644
--- a/docs/reference/aravis/aravis-sections.txt
+++ b/docs/reference/aravis/aravis-sections.txt
@@ -28,7 +28,8 @@ arv_camera_get_acquisition_mode
 arv_camera_set_frame_rate
 arv_camera_get_frame_rate
 arv_camera_set_trigger
-arv_camera_set_software_trigger
+arv_camera_set_trigger_source
+arv_camera_get_trigger_source
 arv_camera_software_trigger
 arv_camera_set_exposure_time
 arv_camera_get_exposure_time
diff --git a/src/arvcamera.c b/src/arvcamera.c
index 7b66a88..aa9c898 100644
--- a/src/arvcamera.c
+++ b/src/arvcamera.c
@@ -531,6 +531,42 @@ arv_camera_set_trigger (ArvCamera *camera, const char *source)
 }
 
 /**
+ * arv_camera_set_trigger_source:
+ * @camera: a #ArvCamera
+ * @source: source name
+ *
+ * Sets the trigger source. This function doesn't check if the camera is configured
+ * to actually use this source as a trigger.
+ */
+
+void
+arv_camera_set_trigger_source (ArvCamera *camera, const char *source)
+{
+	g_return_if_fail (ARV_IS_CAMERA (camera));
+	g_return_if_fail (source != NULL);
+
+	arv_device_set_string_feature_value (camera->priv->device, "TriggerSource", source);
+}
+
+/**
+ * arv_camera_get_trigger_source:
+ * @camera: a #ArvCamera
+ *
+ * Gets the trigger source. This function doesn't check if the camera is configured
+ * to actually use this source as a trigger.
+ *
+ * Returns: a string containing the trigger source name, NULL on error.
+ */
+
+const char *
+arv_camera_get_trigger_source (ArvCamera *camera)
+{
+	g_return_val_if_fail (ARV_IS_CAMERA (camera), NULL);
+
+	return arv_device_get_string_feature_value (camera->priv->device, "TriggerSource");
+}
+
+/**
  * arv_camera_software_trigger:
  * @camera: a #ArvCamera
  *
diff --git a/src/arvcamera.h b/src/arvcamera.h
index 076712a..ea28d4e 100644
--- a/src/arvcamera.h
+++ b/src/arvcamera.h
@@ -86,6 +86,8 @@ ArvAcquisitionMode 	arv_camera_get_acquisition_mode 	(ArvCamera *camera);
 void		arv_camera_set_frame_rate		(ArvCamera *camera, double frame_rate);
 double 		arv_camera_get_frame_rate 		(ArvCamera *camera);
 void		arv_camera_set_trigger			(ArvCamera *camera, const char *source);
+void 		arv_camera_set_trigger_source		(ArvCamera *camera, const char *source);
+const char *	arv_camera_get_trigger_source		(ArvCamera *camera);
 
 void 		arv_camera_software_trigger 		(ArvCamera *camera);