1From 7a7ca574d5805dfa89efd35f1c38d6582a77dd7a Mon Sep 17 00:00:00 2001
2From: Jeffy Chen <jeffy.chen@rock-chips.com>
3Date: Fri, 12 May 2023 09:38:03 +0800
4Subject: [PATCH 42/42] kmssink: Avoid src size overflow
5
6The scaled video source size might overflow in
7gst_kms_sink_calculate_display_ratio()
8
9Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
10---
11 sys/kms/gstkmssink.c | 12 ++++++++++++
12 1 file changed, 12 insertions(+)
13
14diff --git a/sys/kms/gstkmssink.c b/sys/kms/gstkmssink.c
15index 48d3f5b..bf26793 100644
16--- a/sys/kms/gstkmssink.c
17+++ b/sys/kms/gstkmssink.c
18@@ -1706,6 +1706,18 @@ gst_kms_sink_calculate_display_ratio (GstKMSSink * self, GstVideoInfo * vinfo,
19     *scaled_height = video_height;
20   }
21
22+  if (*scaled_width > video_width) {
23+    GST_DEBUG_OBJECT (self, "keeping video width");
24+    *scaled_width = video_width;
25+    *scaled_height = (guint)
26+        gst_util_uint64_scale_int (video_width, dar_d, dar_n);
27+  } else if (*scaled_height > video_height) {
28+    GST_DEBUG_OBJECT (self, "keeping video height");
29+    *scaled_width = (guint)
30+        gst_util_uint64_scale_int (video_height, dar_n, dar_d);
31+    *scaled_height = video_height;
32+  }
33+
34 out:
35   GST_DEBUG_OBJECT (self, "scaling to %dx%d", *scaled_width, *scaled_height);
36
37--
382.20.1
39
40