From 8a65ee328ef81ebc77730a2cc3b2bc756268874e Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Mon, 17 Jun 2019 02:34:29 +0300
Subject: 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>
---
 kms++util/src/drawing.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'kms++util/src/drawing.cpp')

diff --git a/kms++util/src/drawing.cpp b/kms++util/src/drawing.cpp
index 3752f94..24a9954 100644
--- a/kms++util/src/drawing.cpp
+++ b/kms++util/src/drawing.cpp
@@ -1,5 +1,6 @@
 
 #include <cmath>
+#include <unistd.h>
 
 #include <kms++/kms++.h>
 #include <kms++util/kms++util.h>
@@ -569,4 +570,10 @@ void draw_text(IFramebuffer& buf, uint32_t x, uint32_t y, const string& str, RGB
 		draw_char(buf, (x + 8 * i), y, str[i], color);
 }
 
+void dump_framebuffer(IFramebuffer &fb, int fd)
+{
+	for (unsigned int i = 0; i < fb.num_planes(); ++i)
+		::write(fd, fb.map(i), fb.size(i));
+}
+
 }
-- 
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