utils: Add a dump_framebuffer() method

Add a new method to write the contents of a framebuffer to a file
descriptor. This can be used to capture frames from writeback
connectors.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/py/pykms/pykmsutil.cpp b/py/pykms/pykmsutil.cpp
index 53717e0..11784b7 100644
--- a/py/pykms/pykmsutil.cpp
+++ b/py/pykms/pykmsutil.cpp
@@ -59,4 +59,7 @@ void init_pykmsutils(py::module& m)
 		draw_circle(fb, xCenter, yCenter, radius, color);
 	});
 	m.def("draw_text", [](Framebuffer& fb, uint32_t x, uint32_t y, const string& str, RGB color) { draw_text(fb, x, y, str, color); });
+	m.def("dump_framebuffer", [](Framebuffer& fb, int fd) {
+		dump_framebuffer(fb, fd);
+	});
 }