98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
int chn_reinit(pcm_channel *c);
|
|
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, u_int32_t fmt);
|
|
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 blkcnt, 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_checkunderflow(pcm_channel *c);
|
|
int chn_wrfeed(pcm_channel *c);
|
|
int chn_rdfeed(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_EMLDMAWR 2
|
|
#define PCMTRIG_EMLDMARD 3
|
|
#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_NOTRIGGER 0x00000040
|
|
|
|
#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)
|
|
|
|
/*
|
|
* This should be large enough to hold all pcm data between
|
|
* tsleeps in chn_{read,write} at the highest sample rate.
|
|
* (which is usually 48kHz * 16bit * stereo = 192000 bytes/sec)
|
|
*/
|
|
#define CHN_2NDBUFBLKSIZE (2 * 1024)
|
|
/* The total number of blocks per secondary buffer. */
|
|
#define CHN_2NDBUFBLKNUM (32)
|
|
/* The size of a whole secondary buffer. */
|
|
#define CHN_2NDBUFMAXSIZE (131072)
|