fb0ef52838
(I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules
65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
/*
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* Include file for midi buffer.
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*
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* Copyright by Seigo Tanimura 1999.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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/*
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* descriptor of a midi buffer. See midibuf.c for documentation.
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* (rp,rl) and (fp,fl) identify the READY and FREE regions of the
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* buffer. dl contains the length used for dma transfer, dl>0 also
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* means that the channel is busy and there is a DMA transfer in progress.
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*/
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typedef struct _midi_dbuf {
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char *buf;
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int bufsize ;
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volatile int rp, fp; /* pointers to the ready and free area */
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volatile int dl; /* transfer size */
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volatile int rl, fl; /* length of ready and free areas. */
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int int_count;
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int chan; /* dma channel */
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int unit_size ; /* unit size */
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struct selinfo sel;
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u_long total; /* total bytes processed */
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u_long prev_total; /* copy of the above when GETxPTR called */
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int tsleep_in, tsleep_out; /* pillows to tsleep on */
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int blocksize; /* block size */
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} midi_dbuf ;
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/*
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* These are the midi buffer methods, used in midi interface devices.
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*/
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int midibuf_init(midi_dbuf *dbuf);
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int midibuf_seqwrite(midi_dbuf *dbuf, u_char* data, int len);
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int midibuf_uiowrite(midi_dbuf *dbuf, struct uio *buf, int len);
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int midibuf_output_intr(midi_dbuf *dbuf, u_char *data, int len);
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int midibuf_input_intr(midi_dbuf *dbuf, u_char *data, int len);
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int midibuf_seqread(midi_dbuf *dbuf, u_char* data, int len);
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int midibuf_seqcopy(midi_dbuf *dbuf, u_char* data, int len);
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int midibuf_uioread(midi_dbuf *dbuf, struct uio *buf, int len);
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