From 49e3cbf811017cfc40db7c170c612c5803ec054f Mon Sep 17 00:00:00 2001
From: Dirk Farin <dirk.farin@gmail.com>
Date: Thu, 30 Mar 2023 20:31:35 +0200
Subject: [PATCH] add comment why we free the input image early (#801)

---
 libheif/plugins/heif_encoder_aom.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libheif/plugins/heif_encoder_aom.cc b/libheif/plugins/heif_encoder_aom.cc
index 57d512d2ca..5baa8db1c3 100644
--- a/libheif/plugins/heif_encoder_aom.cc
+++ b/libheif/plugins/heif_encoder_aom.cc
@@ -1023,7 +1023,11 @@ struct heif_error aom_encode_image(void* encoder_raw, const struct heif_image* i
   // --- encode frame
 
   err = encode_frame(encoder, &codec, &input_image); //, frame_count++, flags, writer);
+
+  // Note: we are freeing the input image directly after use.
+  // This covers the usual success case and also all error cases that occur below.
   aom_img_free(&input_image);
+
   if (err.code != heif_error_Ok) {
     return err;
   }