-/* midi.h
- *
- * Adlib OPL2/OPL3 FM synthesizer chipset test program.
- * Play MIDI file using the OPLx synthesizer (well, poorly anyway)
- * (C) 2010-2012 Jonathan Campbell.
- * Hackipedia DOS library.
- *
- * This code is licensed under the LGPL.
- * <insert LGPL legal text here>
- *
- * Compiles for intended target environments:
- * - MS-DOS [pure DOS mode, or Windows or OS/2 DOS Box]
- */
-
+/* midi.h\r
+ *\r
+ * Adlib OPL2/OPL3 FM synthesizer chipset test program.\r
+ * Play MIDI file using the OPLx synthesizer (well, poorly anyway)\r
+ * (C) 2010-2012 Jonathan Campbell.\r
+ * Hackipedia DOS library.\r
+ *\r
+ * This code is licensed under the LGPL.\r
+ * <insert LGPL legal text here>\r
+ *\r
+ * Compiles for intended target environments:\r
+ * - MS-DOS [pure DOS mode, or Windows or OS/2 DOS Box]\r
+ */\r
+\r
#ifndef __MIDI__\r
-#define __MIDI__
-
-#include <stdio.h>
-#include <conio.h> /* this is where Open Watcom hides the outp() etc. functions */
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <malloc.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <math.h>
-#include <dos.h>
-
-//#include "src/lib/doslib/vga.h"
-//#include "src/lib/doslib/dos.h"
-#include "src/lib/16_head.h"
-#include "src/lib/doslib/8254.h" /* 8254 timer */
-#include "src/lib/doslib/8259.h"
-//#include "src/lib/doslib/vgagui.h"
-//#include "src/lib/doslib/vgatty.h"
-#include "src/lib/doslib/adlib.h"
-
-/* one per OPL channel */
-struct midi_note {
- unsigned char note_number;
- unsigned char note_velocity;
- unsigned char note_track; /* from what MIDI track */
- unsigned char note_channel; /* from what MIDI channel */
- unsigned int busy:1; /* if occupied */
-};
-
-struct midi_channel {
- unsigned char program;
-};
-
-struct midi_track {
- /* track data, raw */
- unsigned char* raw; /* raw data base */
- unsigned char* fence; /* raw data end (last byte + 1) */
- unsigned char* read; /* raw data read ptr */
- /* state */
- unsigned long us_per_quarter_note; /* Microseconds per quarter note (def 120 BPM) */
- unsigned long us_tick_cnt_mtpq; /* Microseconds advanced (up to 10000 us or one unit at 100Hz) x ticks per quarter note */
- unsigned long wait;
- unsigned char last_status; /* MIDI last status byte */
- unsigned int eof:1; /* we hit the end of the track */
-};
-
-#define MIDI_MAX_CHANNELS 16
-#define MIDI_MAX_TRACKS 64
-
-extern struct midi_note midi_notes[ADLIB_FM_VOICES];
-extern struct midi_channel midi_ch[MIDI_MAX_CHANNELS];
-extern struct midi_track midi_trk[MIDI_MAX_TRACKS];
-
-static void (interrupt *old_irq0)();
-static volatile unsigned long irq0_ticks=0;
-static volatile unsigned int irq0_cnt=0,irq0_add=0,irq0_max=0;
-static volatile unsigned char midi_playing=0;
-
-int load_midi_file(const char *path);
-void interrupt irq0();
-void adlib_shut_up();
-void midi_reset_tracks();
-void midi_reset_channels();
-void midi_tick();
-
-#endif /* __MIDI__ */
+#define __MIDI__\r
+\r
+#include <stdio.h>\r
+#include <conio.h> /* this is where Open Watcom hides the outp() etc. functions */\r
+#include <stdlib.h>\r
+#include <string.h>\r
+#include <unistd.h>\r
+#include <malloc.h>\r
+#include <ctype.h>\r
+#include <fcntl.h>\r
+#include <math.h>\r
+#include <dos.h>\r
+\r
+//#include "src/lib/doslib/vga.h"\r
+#include "src/lib/doslib/dos.h"\r
+#include "src/lib/16_head.h"\r
+#include "src/lib/doslib/8254.h" /* 8254 timer */\r
+#include "src/lib/doslib/8259.h"\r
+//#include "src/lib/doslib/vgagui.h"\r
+//#include "src/lib/doslib/vgatty.h"\r
+#include "src/lib/doslib/adlib.h"\r
+\r
+/* one per OPL channel */\r
+struct midi_note {\r
+ unsigned char note_number;\r
+ unsigned char note_velocity;\r
+ unsigned char note_track; /* from what MIDI track */\r
+ unsigned char note_channel; /* from what MIDI channel */\r
+ unsigned int busy:1; /* if occupied */\r
+};\r
+\r
+struct midi_channel {\r
+ unsigned char program;\r
+};\r
+\r
+struct midi_track {\r
+ /* track data, raw */\r
+ unsigned char* raw; /* raw data base */\r
+ unsigned char* fence; /* raw data end (last byte + 1) */\r
+ unsigned char* read; /* raw data read ptr */\r
+ /* state */\r
+ unsigned long us_per_quarter_note; /* Microseconds per quarter note (def 120 BPM) */\r
+ unsigned long us_tick_cnt_mtpq; /* Microseconds advanced (up to 10000 us or one unit at 100Hz) x ticks per quarter note */\r
+ unsigned long wait;\r
+ unsigned char last_status; /* MIDI last status byte */\r
+ unsigned int eof:1; /* we hit the end of the track */\r
+};\r
+\r
+#define MIDI_MAX_CHANNELS 16\r
+#define MIDI_MAX_TRACKS 64\r
+\r
+extern struct midi_note midi_notes[ADLIB_FM_VOICES];\r
+extern struct midi_channel midi_ch[MIDI_MAX_CHANNELS];\r
+extern struct midi_track midi_trk[MIDI_MAX_TRACKS];\r
+\r
+static void (interrupt *old_irq0)();\r
+static volatile unsigned long irq0_ticks=0;\r
+static volatile unsigned int irq0_cnt=0,irq0_add=0,irq0_max=0;\r
+static volatile unsigned char midi_playing=0;\r
+\r
+int load_midi_file(const char *path);\r
+void interrupt irq0();\r
+void adlib_shut_up();\r
+void midi_reset_tracks();\r
+void midi_reset_channels();\r
+void midi_tick();\r
+\r
+#endif /* __MIDI__ */\r
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