From 9030eee0f35a8e4562c7512574dd075ee43c8cbf Mon Sep 17 00:00:00 2001
From: Tapani Pihlajakuja <tapani.pihlajakuja@nokia.com>
Date: Tue, 26 Aug 2025 11:21:03 +0300
Subject: [PATCH] Port float MR 2219 to float reference

---
 lib_com/ivas_error.h            | 7 +++++++
 lib_com/options.h               | 1 +
 lib_util/rotation_file_reader.c | 8 ++++++++
 3 files changed, 16 insertions(+)

diff --git a/lib_com/ivas_error.h b/lib_com/ivas_error.h
index a276367a8..8fc750c4d 100644
--- a/lib_com/ivas_error.h
+++ b/lib_com/ivas_error.h
@@ -131,6 +131,9 @@ typedef enum
     IVAS_ERR_BITSTREAM_READER_INVALID_FORMAT,
     IVAS_ERR_NO_FILE_OPEN,
     IVAS_ERR_SAMPLING_RATE_UNKNOWN,
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+    IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT,
+#endif
 
     /*----------------------------------------*
      *    renderer (lib_rend only)            *
@@ -262,6 +265,10 @@ static inline const char *ivas_error_to_string( ivas_error error_code )
             return "Invalid input format";
         case IVAS_ERR_INVALID_INDEX:
             return "Invalid index";
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+        case IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT:
+            return "Euler angles were detected in the input but only Quaternions are supported";
+#endif
         default:
             break;
     }
diff --git a/lib_com/options.h b/lib_com/options.h
index 3b6c3bade..c5c98944b 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -221,6 +221,7 @@
 #define FIX_1369_HQ_LR_OVERFLOW                         /* FhG: fix BASOP overflow in hq_lr_enc(), brings floating-point code inline with FX */
 #define NONBE_1118_EVS_LR_HQ_BITERROR                   /* VA: issue 1118: fix EVS decoder crash in LR-HQ in case of bit errors */
 #define FIX_1139_REV_COLORATION_SHORT_T60               /* Nokia,FhG: Fix issue 1139, prevent sound coloration artefacts at very low reverberation times */
+#define FIX_1370_EXTERNAL_ORIENTATION_CHECK             /* Nokia: add sanity check for Euler angles for external orientations */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_util/rotation_file_reader.c b/lib_util/rotation_file_reader.c
index b948a5152..91c32c2be 100644
--- a/lib_util/rotation_file_reader.c
+++ b/lib_util/rotation_file_reader.c
@@ -175,6 +175,14 @@ ivas_error ExternalOrientationFileReading(
     }
 
     ( externalOrientationReader->frameCounter )++;
+#ifdef FIX_1370_EXTERNAL_ORIENTATION_CHECK
+
+    /* Only Quaternion orientations are supported, raise an error if Euler angles are detected in the input */
+    if ( w == -3.0f )
+    {
+        return IVAS_ERR_EXTERNAL_ORIENTATION_INVALID_FORMAT;
+    }
+#endif
 
     pQuaternion->w = w;
     pQuaternion->x = x;
-- 
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