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From 89cd11f012ee5322746e307efd3089dcfc9fa129 Mon Sep 17 00:00:00 2001
From: wang_yue111 <648774160@qq.com>
Date: Wed, 3 Mar 2021 10:38:53 +0800
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/1727
---
magick/quantum-private.h | 12 +++++++++---
magick/quantum.c | 2 +-
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/magick/quantum-private.h b/magick/quantum-private.h
index 6654c1d..7d51397 100644
--- a/magick/quantum-private.h
+++ b/magick/quantum-private.h
@@ -324,9 +324,15 @@ static inline Quantum ScaleAnyToQuantum(const QuantumAny quantum,
static inline QuantumAny ScaleQuantumToAny(const Quantum quantum,
const QuantumAny range)
{
- if (quantum < 0)
- return((QuantumAny) 0);
- return((QuantumAny) (((MagickRealType) range*quantum)/QuantumRange+0.5));
+#if !defined(MAGICKCORE_HDRI_SUPPORT)
+ return((QuantumAny) ((MagickRealType) range*quantum/QuantumRange));
+#else
+ if (quantum <= 0.0)
+ return((QuantumAny) 0UL);
+ if (((MagickRealType) range*quantum/QuantumRange) >= 18446744073709551615.0)
+ return((QuantumAny) MagickULLConstant(18446744073709551615));
+ return((QuantumAny) ((MagickRealType) range*quantum/QuantumRange+0.5));
+#endif
}
#if (MAGICKCORE_QUANTUM_DEPTH == 8)
diff --git a/magick/quantum.c b/magick/quantum.c
index 8edd7e3..37ae6db 100644
--- a/magick/quantum.c
+++ b/magick/quantum.c
@@ -674,7 +674,7 @@ MagickExport MagickBooleanType SetQuantumDepth(const Image *image,
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(quantum_info != (QuantumInfo *) NULL);
assert(quantum_info->signature == MagickCoreSignature);
- quantum_info->depth=depth;
+ quantum_info->depth=MagickMin(depth,64);
if (quantum_info->format == FloatingPointQuantumFormat)
{
if (quantum_info->depth > 32)
--
2.23.0
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