*: initial commit of stripped schism stuff

Forking schism tracker's IT playback stuff into a little playback
library for embedding in demos.

1 files changed, 122 insertions, 0 deletions

diff --git a/src/include/fmopl.h b/src/include/fmopl.h
new file mode 100644
index 0000000..85ed3dd
--- /dev/null
+++ b/src/include/fmopl.h
@@ -0,0 +1,122 @@
+#ifndef __FMOPL_H_
+#define __FMOPL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define logerror(...) /**/
+
+/* --- 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
+
+/* compiler dependence */
+#ifndef __OSDCOMM_H__
+#define __OSDCOMM_H__
+typedef unsigned char   UINT8;   /* unsigned  8bit */
+typedef unsigned short  UINT16;  /* unsigned 16bit */
+typedef unsigned int    UINT32;  /* unsigned 32bit */
+typedef signed char             INT8;    /* signed  8bit   */
+typedef signed short    INT16;   /* signed 16bit   */
+typedef signed int              INT32;   /* signed 32bit   */
+#endif /* __OSDCOMM_H__ */
+
+#ifndef INLINE
+#define INLINE static __inline__
+#endif
+
+#if (OPL_SAMPLE_BITS==16)
+typedef INT16 OPLSAMPLE;
+#endif
+#if (OPL_SAMPLE_BITS==8)
+typedef INT8 OPLSAMPLE;
+#endif
+
+
+typedef void (*OPL_TIMERHANDLER)(void *param,int timer,double period);
+typedef void (*OPL_IRQHANDLER)(void *param,int irq);
+typedef void (*OPL_UPDATEHANDLER)(void *param,int min_interval_us);
+typedef void (*OPL_PORTHANDLER_W)(void *param,unsigned char data);
+typedef unsigned char (*OPL_PORTHANDLER_R)(void *param);
+
+
+#if BUILD_YM3812
+
+void *ym3812_init(UINT32 clock, UINT32 rate);
+void ym3812_shutdown(void *chip);
+void ym3812_reset_chip(void *chip);
+int  ym3812_write(void *chip, int a, int v);
+unsigned char ym3812_read(void *chip, int a);
+int  ym3812_timer_over(void *chip, int c);
+void ym3812_update_one(void *chip, OPLSAMPLE *buffer, int length);
+
+void ym3812_set_timer_handler(void *chip, OPL_TIMERHANDLER TimerHandler, void *param);
+void ym3812_set_irq_handler(void *chip, OPL_IRQHANDLER IRQHandler, void *param);
+void ym3812_set_update_handler(void *chip, OPL_UPDATEHANDLER UpdateHandler, void *param);
+
+#endif /* BUILD_YM3812 */
+
+
+#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
+*/
+void *ym3526_init(UINT32 clock, UINT32 rate);
+/* shutdown the YM3526 emulators*/
+void ym3526_shutdown(void *chip);
+void ym3526_reset_chip(void *chip);
+int  ym3526_write(void *chip, int a, int v);
+unsigned char ym3526_read(void *chip, int a);
+int  ym3526_timer_over(void *chip, 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 ym3526_update_one(void *chip, OPLSAMPLE *buffer, int length);
+
+void ym3526_set_timer_handler(void *chip, OPL_TIMERHANDLER TimerHandler, void *param);
+void ym3526_set_irq_handler(void *chip, OPL_IRQHANDLER IRQHandler, void *param);
+void ym3526_set_update_handler(void *chip, OPL_UPDATEHANDLER UpdateHandler, void *param);
+
+#endif /* BUILD_YM3526 */
+
+
+#if BUILD_Y8950
+
+/* Y8950 port handlers */
+void y8950_set_port_handler(void *chip, OPL_PORTHANDLER_W PortHandler_w, OPL_PORTHANDLER_R PortHandler_r, void *param);
+void y8950_set_keyboard_handler(void *chip, OPL_PORTHANDLER_W KeyboardHandler_w, OPL_PORTHANDLER_R KeyboardHandler_r, void *param);
+void y8950_set_delta_t_memory(void *chip, void * deltat_mem_ptr, int deltat_mem_size );
+
+void * y8950_init(UINT32 clock, UINT32 rate);
+void y8950_shutdown(void *chip);
+void y8950_reset_chip(void *chip);
+int  y8950_write(void *chip, int a, int v);
+unsigned char y8950_read (void *chip, int a);
+int  y8950_timer_over(void *chip, int c);
+void y8950_update_one(void *chip, OPLSAMPLE *buffer, int length);
+
+void y8950_set_timer_handler(void *chip, OPL_TIMERHANDLER TimerHandler, void *param);
+void y8950_set_irq_handler(void *chip, OPL_IRQHANDLER IRQHandler, void *param);
+void y8950_set_update_handler(void *chip, OPL_UPDATEHANDLER UpdateHandler, void *param);
+
+#endif /* BUILD_Y8950 */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __FMOPL_H__ */