1 files changed, 65 insertions, 0 deletions
diff --git a/sys/dev/sound/midi/midibuf.h b/sys/dev/sound/midi/midibuf.h
new file mode 100644
index 0000000..a25c1cc
--- /dev/null
+++ b/sys/dev/sound/midi/midibuf.h
@@ -0,0 +1,65 @@
+/*
+ * Include file for midi buffer.
+ * 
+ * Copyright by Seigo Tanimura 1999.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ *
+ */
+
+/*      
+ * descriptor of a midi buffer. See midibuf.c for documentation.
+ * (rp,rl) and (fp,fl) identify the READY and FREE regions of the
+ * buffer. dl contains the length used for dma transfer, dl>0 also
+ * means that the channel is busy and there is a DMA transfer in progress.
+ */     
+
+typedef struct _midi_dbuf {
+	char *buf;
+	int     bufsize ;
+	volatile int rp, fp;		/* pointers to the ready and free area */
+	volatile int dl;		/* transfer size */
+	volatile int rl, fl;		/* length of ready and free areas. */
+	int int_count;
+	int chan;			/* dma channel */
+	int unit_size ;			/* unit size */
+	struct selinfo sel;
+	u_long total;			/* total bytes processed */
+	u_long prev_total;		/* copy of the above when GETxPTR called */
+	struct cv cv_in, cv_out;	/* condvars */
+	int blocksize;			/* block size */
+} midi_dbuf ;
+
+/*
+ * These are the midi buffer methods, used in midi interface devices.
+ */
+int midibuf_init(midi_dbuf *dbuf);
+int midibuf_destroy(midi_dbuf *dbuf);
+int midibuf_clear(midi_dbuf *dbuf);
+int midibuf_seqwrite(midi_dbuf *dbuf, u_char* data, int len, int *lenw, midi_callback_t *cb, void *d, int reason, struct mtx *m);
+int midibuf_output_intr(midi_dbuf *dbuf, u_char *data, int len, int *leno);
+int midibuf_input_intr(midi_dbuf *dbuf, u_char *data, int len, int *leni);
+int midibuf_seqread(midi_dbuf *dbuf, u_char* data, int len, int *lenr, midi_callback_t *cb, void *d, int reason, struct mtx *m);
+int midibuf_seqcopy(midi_dbuf *dbuf, u_char* data, int len, int *lenc, midi_callback_t *cb, void *d, int reason, struct mtx *m);
+int midibuf_seqdelete(midi_dbuf *dbuf, int len, int *lend, midi_callback_t *cb, void *d, int reason, struct mtx *m);