[PATCH 04/28] edid-decode: check cta_hdr10plus length

[joevt <joevt@shaw.ca>]

- if the length is 0 then it cannot get Application Version. Output a fail message.
- cta_hdr10plus may output hex after "Application Version: %u". If the hex is longer than 16 characters, then more lines of hex will be output and they won't align with the first line.
Instead, always start the hex on a new line.

Signed-off-by: Joe van Tunen <joevt@shaw.ca>
---
 parse-cta-block.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/parse-cta-block.cpp b/parse-cta-block.cpp
index cee51d7..703f8ca 100644
--- a/parse-cta-block.cpp
+++ b/parse-cta-block.cpp
@@ -1133,11 +1133,12 @@ static void cta_microsoft(const unsigned char *x, unsigned length)
 
 static void cta_hdr10plus(const unsigned char *x, unsigned length)
 {
-	printf("    Application Version: %u", x[0]);
-	if (length > 1)
-		hex_block("  ", x + 1, length - 1);
-	else
-		printf("\n");
+	if (length == 0) {
+		fail("Empty Data Block with length %u.\n", length);
+		return;
+	}
+	printf("    Application Version: %u\n", x[0]);
+	hex_block("    ", x + 1, length - 1);
 }
 
 static void cta_dolby_video(const unsigned char *x, unsigned length)
-- 
2.24.3 (Apple Git-128)