From 2fd06df8de80cbe8cec119642558a6254e5773e7 Mon Sep 17 00:00:00 2001
From: Claudio Felber <claudio.felber@perron2.ch>
Date: Tue, 22 Sep 2020 12:18:23 +0200
Subject: [PATCH] Add support for flipped QR-codes in inspect and qrtest tools

---
 tests/inspect.c |  4 ++++
 tests/qrtest.c  | 19 ++++++++++++++-----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/tests/inspect.c b/tests/inspect.c
index 866ee16..ce5357a 100644
--- a/tests/inspect.c
+++ b/tests/inspect.c
@@ -34,6 +34,10 @@ static void dump_info(struct quirc *q)
 
 		quirc_extract(q, i, &code);
 		err = quirc_decode(&code, &data);
+		if (err == QUIRC_ERROR_DATA_ECC) {
+			quirc_flip(&code);
+			err = quirc_decode(&code, &data);
+		}
 
 		dump_cells(&code);
 		printf("\n");
diff --git a/tests/qrtest.c b/tests/qrtest.c
index 2e50698..1bb178e 100644
--- a/tests/qrtest.c
+++ b/tests/qrtest.c
@@ -125,8 +125,15 @@ static int scan_file(const char *path, const char *filename,
 
 		quirc_extract(decoder, i, &code);
 
-		if (!quirc_decode(&code, &data))
+		quirc_decode_error_t err = quirc_decode(&code, &data);
+		if (err == QUIRC_ERROR_DATA_ECC) {
+			quirc_flip(&code);
+			err = quirc_decode(&code, &data);
+		}
+
+		if (!err) {
 			info->decode_count++;
+		}
 	}
 
 	(void)clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp);
@@ -150,12 +157,14 @@ static int scan_file(const char *path, const char *filename,
 
 			if (want_verbose) {
 				struct quirc_data data;
-				quirc_decode_error_t err =
-					quirc_decode(&code, &data);
+				quirc_decode_error_t err = quirc_decode(&code, &data);
+				if (err == QUIRC_ERROR_DATA_ECC) {
+					quirc_flip(&code);
+					err = quirc_decode(&code, &data);
+				}
 
 				if (err) {
-					printf("  ERROR: %s\n\n",
-					       quirc_strerror(err));
+					printf("  ERROR: %s\n\n", quirc_strerror(err));
 				} else {
 					printf("  Decode successful:\n");
 					dump_data(&data);