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engines/ultima/nuvie/sound/adplug/fm_opl.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef NUVIE_SOUND_ADPLUG_FM_OPL_H
+#define NUVIE_SOUND_ADPLUG_FM_OPL_H
+
+#include "common/scummsys.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+#define HAS_YM3812  1
+#define HAS_YM3526  0
+#define HAS_Y8950   0
+
+/* --- select emulation chips --- */
+#define BUILD_YM3812 (HAS_YM3812)
+#define BUILD_YM3526 (HAS_YM3526)
+#define BUILD_Y8950  (HAS_Y8950)
+
+/* select output bits size of output : 8 or 16 */
+#define OPL_SAMPLE_BITS 16
+
+#if (OPL_SAMPLE_BITS==16)
+typedef int16 OPLSAMPLE;
+#endif
+#if (OPL_SAMPLE_BITS==8)
+typedef int8 OPLSAMPLE;
+#endif
+
+
+typedef void (*OPL_TIMERHANDLER)(int channel, double interval_Sec);
+typedef void (*OPL_IRQHANDLER)(int param, int irq);
+typedef void (*OPL_UPDATEHANDLER)(int param, int min_interval_us);
+typedef void (*OPL_PORTHANDLER_W)(int param, unsigned char data);
+typedef unsigned char (*OPL_PORTHANDLER_R)(int param);
+
+
+#if BUILD_YM3812
+
+int  YM3812Init(int num, int clock, int rate);
+void YM3812Shutdown(void);
+void YM3812ResetChip(int which);
+int  YM3812Write(int which, int a, int v);
+unsigned char YM3812Read(int which, int a);
+int  YM3812TimerOver(int which, int c);
+void YM3812UpdateOne(int which, int16 *buffer, int length);
+
+void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
+void YM3812SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
+void YM3812SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);
+
+#endif
+
+
+#if BUILD_YM3526
+
+/*
+** Initialize YM3526 emulator(s).
+**
+** 'num' is the number of virtual YM3526's to allocate
+** 'clock' is the chip clock in Hz
+** 'rate' is sampling rate
+*/
+int  YM3526Init(int num, int clock, int rate);
+/* shutdown the YM3526 emulators*/
+void YM3526Shutdown(void);
+void YM3526ResetChip(int which);
+int  YM3526Write(int which, int a, int v);
+unsigned char YM3526Read(int which, int a);
+int  YM3526TimerOver(int which, int c);
+/*
+** Generate samples for one of the YM3526's
+**
+** 'which' is the virtual YM3526 number
+** '*buffer' is the output buffer pointer
+** 'length' is the number of samples that should be generated
+*/
+void YM3526UpdateOne(int which, int16 *buffer, int length);
+
+void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
+void YM3526SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
+void YM3526SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);
+
+#endif
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#if BUILD_Y8950
+
+#include "ymdeltat.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+/* Y8950 port handlers */
+void Y8950SetPortHandler(int which, OPL_PORTHANDLER_W PortHandler_w, OPL_PORTHANDLER_R PortHandler_r, int param);
+void Y8950SetKeyboardHandler(int which, OPL_PORTHANDLER_W KeyboardHandler_w, OPL_PORTHANDLER_R KeyboardHandler_r, int param);
+void Y8950SetDeltaTMemory(int which, void *deltat_rom, int deltat_rom_size);
+
+int  Y8950Init(int num, int clock, int rate);
+void Y8950Shutdown(void);
+void Y8950ResetChip(int which);
+int  Y8950Write(int which, int a, int v);
+unsigned char Y8950Read(int which, int a);
+int  Y8950TimerOver(int which, int c);
+void Y8950UpdateOne(int which, int16 *buffer, int length);
+
+void Y8950SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
+void Y8950SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
+void Y8950SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif
+
+#endif