commit b551bb3b8913e330dc0eeb08246729317c31e2f9
author Joe Drago <jdrago@netflix.com> Thu Jun 03 15:22:05 2021 -0700
committer Joe Drago <joedrago@gmail.com> Thu Jun 03 18:09:38 2021 -0700
tree ddf1eee5d9683d83ec927e7454c80fbff61406ca
parent d09319b02bff7d5d61041eca7a589c772c1bb492

Refactor imir implementation to match HEIF Draft Amendment 2, which replaces 'axis' with 'mode' and inverts the behavior

src/read.c

diff --git a/src/read.c b/src/read.c
index a37fb80..d363f84 100644
--- a/src/read.c
+++ b/src/read.c
@@ -1553,10 +1553,10 @@
     BEGIN_STREAM(s, raw, rawLen, diag, "Box[imir]");
 
     avifImageMirror * imir = &prop->u.imir;
-    CHECK(avifROStreamRead(&s, &imir->axis, 1)); // unsigned int (7) reserved = 0; unsigned int (1) axis;
-    if ((imir->axis & 0xfe) != 0) {
+    CHECK(avifROStreamRead(&s, &imir->mode, 1)); // unsigned int (7) reserved = 0; unsigned int (1) mode;
+    if ((imir->mode & 0xfe) != 0) {
         // reserved bits must be 0
-        avifDiagnosticsPrintf(diag, "Box[imir] contains nonzero reserved bits [%u]", imir->axis);
+        avifDiagnosticsPrintf(diag, "Box[imir] contains nonzero reserved bits [%u]", imir->mode);
         return AVIF_FALSE;
     }
     return AVIF_TRUE;