diff options
Diffstat (limited to 'sys/dev/sound/pcm/channel.h')
| -rw-r--r-- | sys/dev/sound/pcm/channel.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sys/dev/sound/pcm/channel.h b/sys/dev/sound/pcm/channel.h new file mode 100644 index 0000000..8667a9f --- /dev/null +++ b/sys/dev/sound/pcm/channel.h @@ -0,0 +1,80 @@ +/* + * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> + * All rights reserved. + * + * 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. + * + * $Id$ + */ + +int chn_write(pcm_channel *c, struct uio *buf); +int chn_read(pcm_channel *c, struct uio *buf); +int chn_sync(pcm_channel *c, int threshold); +int chn_flush(pcm_channel *c); +int chn_poll(pcm_channel *c, int ev, struct proc *p); + +int chn_init(pcm_channel *c, void *devinfo, int dir); +int chn_setdir(pcm_channel *c, int dir); +int chn_reset(pcm_channel *c); +int chn_setvolume(pcm_channel *c, int left, int right); +int chn_setspeed(pcm_channel *c, int speed); +int chn_setformat(pcm_channel *c, u_int32_t fmt); +int chn_setblocksize(pcm_channel *c, int blksz); +int chn_trigger(pcm_channel *c, int go); +int chn_getptr(pcm_channel *c); +pcmchan_caps *chn_getcaps(pcm_channel *c); + +int chn_allocbuf(snd_dbuf *b, bus_dma_tag_t parent_dmat); +void chn_resetbuf(pcm_channel *c); +void chn_intr(pcm_channel *c); +void chn_dmaupdate(pcm_channel *c); +int chn_abort(pcm_channel *c); + +void buf_isadma(snd_dbuf *b, int go); +int buf_isadmaptr(snd_dbuf *b); +int chn_feedchain(pcm_channel *c); + +extern pcm_feeder feeder_root; + +#define PCMDIR_PLAY 1 +#define PCMDIR_REC -1 + +#define PCMTRIG_START 1 +#define PCMTRIG_STOP 0 +#define PCMTRIG_ABORT -1 + +#define CHN_F_READING 0x00000001 /* have a pending read */ +#define CHN_F_WRITING 0x00000002 /* have a pending write */ +#define CHN_F_CLOSING 0x00000004 /* a pending close */ +#define CHN_F_ABORTING 0x00000008 /* a pending abort */ +#define CHN_F_PENDING_IO (CHN_F_READING | CHN_F_WRITING) +#define CHN_F_RUNNING 0x00000010 /* dma is running */ +#define CHN_F_TRIGGERED 0x00000020 + +#define CHN_F_BUSY 0x00001000 /* has been opened */ +#define CHN_F_HAS_SIZE 0x00002000 /* user set block size */ +#define CHN_F_NBIO 0x00004000 /* do non-blocking i/o */ +#define CHN_F_INIT 0x00008000 /* changed parameters. need init */ +#define CHN_F_MAPPED 0x00010000 /* has been mmap()ed */ + + +#define CHN_F_RESET (CHN_F_BUSY) |
