From: Uwe Ohse  <>
Date: Fri, 4 Jun 2021 13:29:57 +0000 (+0100)
Subject: Fix #901: add ftypavif magic for AVIF files
X-Git-Tag: v1.7~99
X-Git-Url: http://geeqie.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d53e60b5471081f1d071083b71afa73cfd36adf0;p=geeqie.git

Fix #901: add ftypavif magic for AVIF files

https://github.com/BestImageViewer/geeqie/issues/901

AVIF loading depends on the magic numbers, and the current list of known magics in src/image-load.c
is: ftypheic, ftypmsf1, ftypmif1. This is okay for HEIF, but AVIF is a different beast with a different codec and a different magic ftypavif (which is generated by gimp and darktable), and a different file extension (.avif)
---

diff --git a/src/image-load.c b/src/image-load.c
index e6913ff55..125031873 100644
--- a/src/image-load.c
+++ b/src/image-load.c
@@ -712,7 +712,8 @@ static void image_loader_setup_loader(ImageLoader *il)
 	if (il->bytes_total >= 12 &&
 		((memcmp(il->mapped_file + 4, "ftypheic", 8) == 0) ||
 		(memcmp(il->mapped_file + 4, "ftypmsf1", 8) == 0) ||
-		(memcmp(il->mapped_file + 4, "ftypmif1", 8) == 0)))
+		(memcmp(il->mapped_file + 4, "ftypmif1", 8) == 0) ||
+		(memcmp(il->mapped_file + 4, "ftypavif", 8) == 0)))
 		{
 		DEBUG_1("Using custom heif loader");
 		image_loader_backend_set_heif(&il->backend);