add PageFlipHandler

7 files changed, 37 insertions, 1 deletions

diff --git a/libkms++/atomicreq.h b/libkms++/atomicreq.h
index 55dd7c9..e3bd172 100644
--- a/libkms++/atomicreq.h
+++ b/libkms++/atomicreq.h
@@ -24,6 +24,7 @@ public:
 
 	int test();
 	int commit(void* data);
+	int commit(PageFlipHandlerBase* data) { return commit((void*)data); }
 
 private:
 	Card& m_card;
diff --git a/libkms++/card.cpp b/libkms++/card.cpp
index ae41f10..8438629 100644
--- a/libkms++/card.cpp
+++ b/libkms++/card.cpp
@@ -246,4 +246,24 @@ std::vector<kms::Pipeline> Card::get_connected_pipelines()
 	return outputs;
 }
 
+static void page_flip_handler(int fd, unsigned int frame,
+			      unsigned int sec, unsigned int usec,
+			      void *data)
+{
+	auto handler = (PageFlipHandlerBase*)data;
+	double time = sec + usec / 1000000.0;
+	handler->handle_page_flip(frame, time);
+}
+
+void Card::call_page_flip_handlers()
+{
+	drmEventContext ev = {
+		.version = DRM_EVENT_CONTEXT_VERSION,
+		.vblank_handler = 0,
+		.page_flip_handler = page_flip_handler,
+	};
+
+	drmHandleEvent(fd(), &ev);
+}
+
 }
diff --git a/libkms++/card.h b/libkms++/card.h
index 94e761a..e692dac 100644
--- a/libkms++/card.h
+++ b/libkms++/card.h
@@ -41,6 +41,8 @@ public:
 
 	std::vector<Pipeline> get_connected_pipelines();
 
+	void call_page_flip_handlers();
+
 private:
 	void restore_modes();
 
diff --git a/libkms++/crtc.h b/libkms++/crtc.h
index 1cbf4c4..053c77d 100644
--- a/libkms++/crtc.h
+++ b/libkms++/crtc.h
@@ -25,7 +25,7 @@ public:
 		      float src_x, float src_y, float src_w, float src_h);
 
 	int page_flip(Framebuffer& fb, void *data);
-
+	int page_flip(Framebuffer& fb, PageFlipHandlerBase* data) { return page_flip(fb, (void*)data); }
 private:
 	Crtc(Card& card, uint32_t id, uint32_t idx);
 	~Crtc();
diff --git a/libkms++/decls.h b/libkms++/decls.h
index f9753f2..851a8c2 100644
--- a/libkms++/decls.h
+++ b/libkms++/decls.h
@@ -11,6 +11,7 @@ class Framebuffer;
 class DumbFramebuffer;
 class ExtFramebuffer;
 class DrmObject;
+class PageFlipHandlerBase;
 class Plane;
 class Property;
 class Videomode;
diff --git a/libkms++/kms++.h b/libkms++/kms++.h
index c518a47..291cf13 100644
--- a/libkms++/kms++.h
+++ b/libkms++/kms++.h
@@ -11,3 +11,4 @@
 #include "plane.h"
 #include "property.h"
 #include "pipeline.h"
+#include "pagefliphandler.h"
diff --git a/libkms++/pagefliphandler.h b/libkms++/pagefliphandler.h
new file mode 100644
index 0000000..79cda0d
--- /dev/null
+++ b/libkms++/pagefliphandler.h
@@ -0,0 +1,11 @@
+#pragma once
+
+namespace kms {
+class PageFlipHandlerBase
+{
+public:
+	PageFlipHandlerBase() { }
+	virtual ~PageFlipHandlerBase() { }
+	virtual void handle_page_flip(uint32_t frame, double time) = 0;
+};
+}