From 152345947f2f5415735131c018f2f4077ed8d944 Mon Sep 17 00:00:00 2001
From: Marcus Meissner <marcus@jet.franken.de>
Date: Mon, 17 Jun 2019 07:45:39 +0200
Subject: add some logging, avoid w and h < 2 to avoid division by 0 (AFL)

---
 libgphoto2/bayer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libgphoto2/bayer.c b/libgphoto2/bayer.c
index 3ba72ba6c..36414017e 100644
--- a/libgphoto2/bayer.c
+++ b/libgphoto2/bayer.c
@@ -31,6 +31,7 @@
 #include "config.h"
 #include "bayer.h"
 
+#include <gphoto2/gphoto2-port-log.h>
 #include <gphoto2/gphoto2-result.h>
 
 static const int tile_colours[8][4] = {
@@ -78,6 +79,7 @@ gp_bayer_expand (unsigned char *input, int w, int h, unsigned char *output,
 	int colour, bayer;
 	unsigned char *ptr = input;
 
+	gp_log (GP_LOG_DEBUG, "bayer", "w=%d, h=%d\n", w, h);
 	switch (tile) {
 
 		case BAYER_TILE_RGGB:
@@ -148,6 +150,8 @@ gp_bayer_interpolate (unsigned char *image, int w, int h, BayerTile tile)
 	int p0, p1, p2;
 	int value, div ;
 
+	if (w < 2 || h < 2) return GP_ERROR;
+
 	switch (tile) {
 	default:
 	case BAYER_TILE_RGGB:
-- 
cgit v1.2.1