From 06fb33d4641cbb0d136d069edbf6d8687267166b Mon Sep 17 00:00:00 2001
From: Wohlstand <admin@wohlnet.ru>
Date: Tue, 25 Mar 2025 19:42:54 +0300
Subject: Added YMFM emulators

---
 src/chips/ymfm_opl2.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 src/chips/ymfm_opl2.h

(limited to 'src/chips/ymfm_opl2.h')

diff --git a/src/chips/ymfm_opl2.h b/src/chips/ymfm_opl2.h
new file mode 100644
index 0000000..f8105e6
--- /dev/null
+++ b/src/chips/ymfm_opl2.h
@@ -0,0 +1,60 @@
+/*
+ * Interfaces over Yamaha OPL3 (YMF262) chip emulators
+ *
+ * Copyright (c) 2017-2025 Vitaly Novichkov (Wohlstand)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef YMFM_OPL2_H
+#define YMFM_OPL2_H
+
+#include "opl_chip_base.h"
+
+class YmFmOPL2 final : public OPLChipBaseT<YmFmOPL2>
+{
+    void *m_chip;
+    void *m_intf;
+
+    static const size_t c_queueSize = 500;
+
+    struct Reg
+    {
+        uint32_t addr;
+        uint8_t data;
+    };
+
+    Reg m_queue[c_queueSize];
+    size_t m_headPos;
+    size_t m_tailPos;
+    long m_queueCount;
+
+public:
+    YmFmOPL2();
+    ~YmFmOPL2() override;
+
+    bool canRunAtPcmRate() const override { return false; }
+    void setRate(uint32_t rate) override;
+    void reset() override;
+    void writeReg(uint16_t addr, uint8_t data) override;
+    void nativePreGenerate() override {}
+    void nativePostGenerate() override {}
+    void nativeGenerate(int16_t *frame) override;
+    const char *emulatorName() override;
+    ChipType chipType() override;
+    bool hasFullPanning() override;
+};
+
+#endif // YMFM_OPL2_H
-- 
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