Adding a new Camera Server implementation to Godot.

This is a new singleton where camera sources such as webcams or cameras on a mobile phone can register themselves with the Server.
Other parts of Godot can interact with this to obtain images from the camera as textures.
This work includes additions to the Visual Server to use this functionality to present the camera image in the background. This is specifically targetted at AR applications.

3 files changed, 13 insertions, 0 deletions

diff --git a/modules/gdnative/arvr/arvr_interface_gdnative.cpp b/modules/gdnative/arvr/arvr_interface_gdnative.cpp
index c3f8688adb..da01f573ce 100644
--- a/modules/gdnative/arvr/arvr_interface_gdnative.cpp
+++ b/modules/gdnative/arvr/arvr_interface_gdnative.cpp
@@ -115,6 +115,17 @@ void ARVRInterfaceGDNative::set_anchor_detection_is_enabled(bool p_enable) {
 	interface->set_anchor_detection_is_enabled(data, p_enable);
 }
 
+int ARVRInterfaceGDNative::get_camera_feed_id() {
+
+	ERR_FAIL_COND_V(interface == NULL, 0);
+
+	if ((interface->version.major > 1) || ((interface->version.major) == 1 && (interface->version.minor >= 1))) {
+		return (unsigned int)interface->get_camera_feed_id(data);
+	} else {
+		return 0;
+	}
+}
+
 bool ARVRInterfaceGDNative::is_stereo() {
 	bool stereo;
 
diff --git a/modules/gdnative/arvr/arvr_interface_gdnative.h b/modules/gdnative/arvr/arvr_interface_gdnative.h
index 86396b067a..e0e5b67849 100644
--- a/modules/gdnative/arvr/arvr_interface_gdnative.h
+++ b/modules/gdnative/arvr/arvr_interface_gdnative.h
@@ -66,6 +66,7 @@ public:
 	/** specific to AR **/
 	virtual bool get_anchor_detection_is_enabled() const;
 	virtual void set_anchor_detection_is_enabled(bool p_enable);
+	virtual int get_camera_feed_id();
 
 	/** rendering and internal **/
 	virtual Size2 get_render_targetsize();
diff --git a/modules/gdnative/include/arvr/godot_arvr.h b/modules/gdnative/include/arvr/godot_arvr.h
index 657090fa70..d465bbde54 100644
--- a/modules/gdnative/include/arvr/godot_arvr.h
+++ b/modules/gdnative/include/arvr/godot_arvr.h
@@ -64,6 +64,7 @@ typedef struct {
 	// only in 1.1 onwards
 	godot_int (*get_external_texture_for_eye)(void *, godot_int);
 	void (*notification)(void *, godot_int);
+	godot_int (*get_camera_feed_id)(void *);
 } godot_arvr_interface_gdnative;
 
 void GDAPI godot_arvr_register_interface(const godot_arvr_interface_gdnative *p_interface);