350a5fafb1
modify chn_setblocksize() to pick a default soft-blocksize appropriate to the sample rate and format in use. it will aim for a power of two size small enough to generate block sizes of at most 20ms. it will also set the hard-blocksize taking into account rate/format conversions in use. update drivers to implement setblocksize correctly: updated, tested: sb16, emu10k1, maestro, solo updated, untested: ad1816, ess, mss, sb8, csa not updated: ds1, es137x, fm801, neomagic, t4dwave, via82c686 i lack hardware to test: ad1816, csa, fm801, neomagic others will be updated/tested in the next few days.
50 lines
2.1 KiB
C
50 lines
2.1 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#define ISA_DMA(b) (((b)->chan >= 0 && (b)->chan != 4 && (b)->chan < 8))
|
|
|
|
int sndbuf_alloc(snd_dbuf *b, bus_dma_tag_t dmatag, int size);
|
|
int sndbuf_setup(snd_dbuf *b, void *buf, int size);
|
|
void sndbuf_free(snd_dbuf *b);
|
|
int sndbuf_resize(snd_dbuf *b, int blkcnt, int blksz);
|
|
void sndbuf_reset(snd_dbuf *b);
|
|
void sndbuf_clear(snd_dbuf *b, int length);
|
|
int sndbuf_setfmt(snd_dbuf *b, u_int32_t fmt);
|
|
int sndbuf_getbps(snd_dbuf *b);
|
|
void *sndbuf_getbuf(snd_dbuf *b);
|
|
int sndbuf_getsize(snd_dbuf *b);
|
|
int sndbuf_runsz(snd_dbuf *b);
|
|
|
|
int sndbuf_isadmasetup(snd_dbuf *b, struct resource *drq);
|
|
int sndbuf_isadmasetdir(snd_dbuf *b, int dir);
|
|
void sndbuf_isadma(snd_dbuf *b, int go);
|
|
int sndbuf_isadmaptr(snd_dbuf *b);
|
|
void sndbuf_isadmabounce(snd_dbuf *b);
|
|
|
|
|