commit 08f54fe9d7415fd975657acdac92348ebaa72e20
author dexter <164054284+Naveed8951@users.noreply.github.com> Mon Jan 12 18:40:12 2026 +0530
committer GitHub <noreply@github.com> Mon Jan 12 14:10:12 2026 +0100
tree e3e75cf014e735d7f53d1d36aba6744850e6cc3f
parent 1049d0ebebd5f3416476e198a5b7c45bb32dcc58

colr: add null check in avifTransferCharacteristicsGetGamma (#2961)

src/colr.c

diff --git a/src/colr.c b/src/colr.c
index 71d6691..21a85db 100644
--- a/src/colr.c
+++ b/src/colr.c
@@ -72,18 +72,26 @@
 
 avifResult avifTransferCharacteristicsGetGamma(avifTransferCharacteristics atc, float * gamma)
 {
+    if (gamma == NULL) {
+        return AVIF_RESULT_INVALID_ARGUMENT;
+    }
+
     switch (atc) {
         case AVIF_TRANSFER_CHARACTERISTICS_BT470M:
             *gamma = 2.2f;
             return AVIF_RESULT_OK;
+
         case AVIF_TRANSFER_CHARACTERISTICS_BT470BG:
             *gamma = 2.8f;
             return AVIF_RESULT_OK;
+
         case AVIF_TRANSFER_CHARACTERISTICS_LINEAR:
             *gamma = 1.0f;
             return AVIF_RESULT_OK;
+
         default:
-            return AVIF_RESULT_INVALID_ARGUMENT;
+            // Not representable as a single gamma value (e.g. sRGB, BT.709, PQ, HLG, etc.).
+            return AVIF_RESULT_NOT_IMPLEMENTED;
     }
 }