From a9ebcdcb7fb2d8eeb137b54c100f3d9601b71a2e Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Thu, 27 Aug 2020 21:32:25 -0700
Subject: Handle 0-length convolution buffers

---
 alc/effects/convolution.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'alc/effects')

diff --git a/alc/effects/convolution.cpp b/alc/effects/convolution.cpp
index 8213113b..2ebb9f51 100644
--- a/alc/effects/convolution.cpp
+++ b/alc/effects/convolution.cpp
@@ -136,6 +136,9 @@ EffectBufferBase *ConvolutionState::createBuffer(const ALCdevice *device,
     const al::byte *sampleData, ALuint sampleRate, FmtType sampleType,
     FmtChannels channelType, ALuint numSamples)
 {
+    /* An empty buffer doesn't need a convolution filter. */
+    if(numSamples < 1) return nullptr;
+
     /* FIXME: Support anything. */
     if(channelType != FmtMono && channelType != FmtStereo)
         return nullptr;
-- 
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