From 92ffd8d0269cd49b0ef256cd3912269387f8d318 Mon Sep 17 00:00:00 2001
From: AJR <ajrhacker@users.noreply.github.com>
Date: Mon, 23 Aug 2021 23:42:25 -0400
Subject: [PATCH] okim6295, okim6376, okim9810: Explicitly clamp output streams
 to within range

---
 src/devices/sound/okim6295.cpp | 3 +++
 src/devices/sound/okim6376.cpp | 3 +++
 src/devices/sound/okim9810.cpp | 6 ++++++
 3 files changed, 12 insertions(+)

diff --git a/src/devices/sound/okim6295.cpp b/src/devices/sound/okim6295.cpp
index a6acbe12e9b..4d304ef1721 100644
--- a/src/devices/sound/okim6295.cpp
+++ b/src/devices/sound/okim6295.cpp
@@ -183,6 +183,9 @@ void okim6295_device::sound_stream_update(sound_stream &stream, std::vector<read
 	// iterate over voices and accumulate sample data
 	for (auto & elem : m_voice)
 		elem.generate_adpcm(*this, outputs[0]);
+
+	for (int i = 0; i < outputs[0].samples(); i++)
+		outputs[0].put(i, std::clamp(outputs[0].getraw(i), -1.0f, 1.0f));
 }
 
 
diff --git a/src/devices/sound/okim6376.cpp b/src/devices/sound/okim6376.cpp
index d7cd143e003..997b3e8b13f 100644
--- a/src/devices/sound/okim6376.cpp
+++ b/src/devices/sound/okim6376.cpp
@@ -615,4 +615,7 @@ void okim6376_device::sound_stream_update(sound_stream &stream, std::vector<read
 			sampindex += samples;
 		}
 	}
+
+	for (int i = 0; i < outputs[0].samples(); i++)
+		outputs[0].put(i, std::clamp(outputs[0].getraw(i), -1.0f, 1.0f));
 }
diff --git a/src/devices/sound/okim9810.cpp b/src/devices/sound/okim9810.cpp
index 21e2624cd80..f7a9f6d6f09 100644
--- a/src/devices/sound/okim9810.cpp
+++ b/src/devices/sound/okim9810.cpp
@@ -223,6 +223,12 @@ void okim9810_device::sound_stream_update(sound_stream &stream, std::vector<read
 	// iterate over voices and accumulate sample data
 	for (auto & elem : m_voice)
 		elem.generate_audio(*this, outputs, m_global_volume, m_filter_type);
+
+	for (int i = 0; i < outputs[0].samples(); i++)
+	{
+		outputs[0].put(i, std::clamp(outputs[0].getraw(i), -1.0f, 1.0f));
+		outputs[1].put(i, std::clamp(outputs[1].getraw(i), -1.0f, 1.0f));
+	}
 }