xref: /freebsd/sys/dev/sound/pcm/buffer.h (revision 2e334adf6a1959f29ad75e3c0933d72d892ac5d1)
1098ca2bdSWarner Losh /*-
23f225978SCameron Grant  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3350a5fafSCameron Grant  * All rights reserved.
4350a5fafSCameron Grant  *
5350a5fafSCameron Grant  * Redistribution and use in source and binary forms, with or without
6350a5fafSCameron Grant  * modification, are permitted provided that the following conditions
7350a5fafSCameron Grant  * are met:
8350a5fafSCameron Grant  * 1. Redistributions of source code must retain the above copyright
9350a5fafSCameron Grant  *    notice, this list of conditions and the following disclaimer.
10350a5fafSCameron Grant  * 2. Redistributions in binary form must reproduce the above copyright
11350a5fafSCameron Grant  *    notice, this list of conditions and the following disclaimer in the
12350a5fafSCameron Grant  *    documentation and/or other materials provided with the distribution.
13350a5fafSCameron Grant  *
14350a5fafSCameron Grant  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15350a5fafSCameron Grant  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16350a5fafSCameron Grant  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17350a5fafSCameron Grant  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18350a5fafSCameron Grant  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19350a5fafSCameron Grant  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20350a5fafSCameron Grant  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21350a5fafSCameron Grant  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22350a5fafSCameron Grant  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23350a5fafSCameron Grant  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24350a5fafSCameron Grant  * SUCH DAMAGE.
25350a5fafSCameron Grant  *
26350a5fafSCameron Grant  * $FreeBSD$
27350a5fafSCameron Grant  */
28350a5fafSCameron Grant 
293febcc57SYoshihiro Takahashi #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA)
3066ef8af5SCameron Grant #define SNDBUF_LOCKASSERT(b)
31350a5fafSCameron Grant 
323febcc57SYoshihiro Takahashi #define	SNDBUF_F_DMA		0x00000001
3366ef8af5SCameron Grant #define	SNDBUF_F_XRUN		0x00000002
3466ef8af5SCameron Grant #define	SNDBUF_F_RUNNING	0x00000004
359e4c8259SAriff Abdullah #define	SNDBUF_F_MANAGED	0x00000008
36350a5fafSCameron Grant 
373febcc57SYoshihiro Takahashi #define SNDBUF_NAMELEN	48
383febcc57SYoshihiro Takahashi 
393febcc57SYoshihiro Takahashi struct snd_dbuf {
403febcc57SYoshihiro Takahashi 	device_t dev;
413febcc57SYoshihiro Takahashi 	u_int8_t *buf, *tmpbuf;
42b611c801SAlexander Leidinger 	u_int8_t *shadbuf; /**< shadow buffer used w/ S_D_SILENCE/SKIP */
43b611c801SAlexander Leidinger 	volatile int sl; /**< shadbuf ready length in # of bytes */
443febcc57SYoshihiro Takahashi 	unsigned int bufsize, maxsize;
453febcc57SYoshihiro Takahashi 	volatile int dl; /* transfer size */
463febcc57SYoshihiro Takahashi 	volatile int rp; /* pointers to the ready area */
473febcc57SYoshihiro Takahashi 	volatile int rl; /* length of ready area */
483febcc57SYoshihiro Takahashi 	volatile int hp;
493febcc57SYoshihiro Takahashi 	volatile u_int32_t total, prev_total;
503febcc57SYoshihiro Takahashi 	int dmachan, dir;       /* dma channel */
513febcc57SYoshihiro Takahashi 	u_int32_t fmt, spd, bps;
523febcc57SYoshihiro Takahashi 	unsigned int blksz, blkcnt;
533febcc57SYoshihiro Takahashi 	int xrun;
543febcc57SYoshihiro Takahashi 	u_int32_t flags;
553febcc57SYoshihiro Takahashi 	bus_dmamap_t dmamap;
563febcc57SYoshihiro Takahashi 	bus_dma_tag_t dmatag;
572e334adfSAriff Abdullah 	int dmaflags;
5838cc9942SOlivier Houchard 	u_int32_t buf_addr;
593febcc57SYoshihiro Takahashi 	struct selinfo sel;
6012e524a2SDon Lewis 	struct pcm_channel *channel;
613febcc57SYoshihiro Takahashi 	char name[SNDBUF_NAMELEN];
623febcc57SYoshihiro Takahashi };
633febcc57SYoshihiro Takahashi 
6412e524a2SDon Lewis struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel);
6566ef8af5SCameron Grant void sndbuf_destroy(struct snd_dbuf *b);
6666ef8af5SCameron Grant 
6766ef8af5SCameron Grant void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what);
6866ef8af5SCameron Grant 
692e334adfSAriff Abdullah int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, int dmaflags, unsigned int size);
7066ef8af5SCameron Grant int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size);
7166ef8af5SCameron Grant void sndbuf_free(struct snd_dbuf *b);
7266ef8af5SCameron Grant int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
7366ef8af5SCameron Grant int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
7466ef8af5SCameron Grant void sndbuf_reset(struct snd_dbuf *b);
7566ef8af5SCameron Grant void sndbuf_clear(struct snd_dbuf *b, unsigned int length);
76fc60109dSCameron Grant void sndbuf_fillsilence(struct snd_dbuf *b);
77b611c801SAlexander Leidinger void sndbuf_softreset(struct snd_dbuf *b);
78b611c801SAlexander Leidinger void sndbuf_clearshadow(struct snd_dbuf *b);
7966ef8af5SCameron Grant 
8066ef8af5SCameron Grant u_int32_t sndbuf_getfmt(struct snd_dbuf *b);
8166ef8af5SCameron Grant int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt);
8266ef8af5SCameron Grant unsigned int sndbuf_getspd(struct snd_dbuf *b);
8366ef8af5SCameron Grant void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd);
8466ef8af5SCameron Grant unsigned int sndbuf_getbps(struct snd_dbuf *b);
8566ef8af5SCameron Grant 
8638cc9942SOlivier Houchard bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf);
8738cc9942SOlivier Houchard 
8866ef8af5SCameron Grant void *sndbuf_getbuf(struct snd_dbuf *b);
8966ef8af5SCameron Grant void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs);
9066ef8af5SCameron Grant unsigned int sndbuf_getsize(struct snd_dbuf *b);
9166ef8af5SCameron Grant unsigned int sndbuf_getmaxsize(struct snd_dbuf *b);
9266ef8af5SCameron Grant unsigned int sndbuf_getalign(struct snd_dbuf *b);
9366ef8af5SCameron Grant unsigned int sndbuf_getblkcnt(struct snd_dbuf *b);
9466ef8af5SCameron Grant void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt);
9566ef8af5SCameron Grant unsigned int sndbuf_getblksz(struct snd_dbuf *b);
9666ef8af5SCameron Grant void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz);
9766ef8af5SCameron Grant unsigned int sndbuf_runsz(struct snd_dbuf *b);
9866ef8af5SCameron Grant void sndbuf_setrun(struct snd_dbuf *b, int go);
9966ef8af5SCameron Grant struct selinfo *sndbuf_getsel(struct snd_dbuf *b);
10066ef8af5SCameron Grant 
10166ef8af5SCameron Grant unsigned int sndbuf_getxrun(struct snd_dbuf *b);
102d55d96f6SAlexander Leidinger void sndbuf_setxrun(struct snd_dbuf *b, unsigned int xrun);
10366ef8af5SCameron Grant unsigned int sndbuf_gethwptr(struct snd_dbuf *b);
10466ef8af5SCameron Grant void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr);
10566ef8af5SCameron Grant unsigned int sndbuf_getfree(struct snd_dbuf *b);
10666ef8af5SCameron Grant unsigned int sndbuf_getfreeptr(struct snd_dbuf *b);
10766ef8af5SCameron Grant unsigned int sndbuf_getready(struct snd_dbuf *b);
10866ef8af5SCameron Grant unsigned int sndbuf_getreadyptr(struct snd_dbuf *b);
10966ef8af5SCameron Grant unsigned int sndbuf_getblocks(struct snd_dbuf *b);
11066ef8af5SCameron Grant unsigned int sndbuf_getprevblocks(struct snd_dbuf *b);
11166ef8af5SCameron Grant unsigned int sndbuf_gettotal(struct snd_dbuf *b);
112a580b31aSAriff Abdullah unsigned int snd_xbytes(unsigned int v, unsigned int from, unsigned int to);
113a580b31aSAriff Abdullah unsigned int sndbuf_xbytes(unsigned int v, struct snd_dbuf *from, struct snd_dbuf *to);
114a580b31aSAriff Abdullah u_int8_t sndbuf_zerodata(u_int32_t fmt);
11566ef8af5SCameron Grant void sndbuf_updateprevtotal(struct snd_dbuf *b);
11666ef8af5SCameron Grant 
11766ef8af5SCameron Grant int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count);
11866ef8af5SCameron Grant int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
11966ef8af5SCameron Grant int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count);
12066ef8af5SCameron Grant 
12166ef8af5SCameron Grant u_int32_t sndbuf_getflags(struct snd_dbuf *b);
12266ef8af5SCameron Grant void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
12366ef8af5SCameron Grant 
1243febcc57SYoshihiro Takahashi int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq);
1253febcc57SYoshihiro Takahashi int sndbuf_dmasetdir(struct snd_dbuf *b, int dir);
1263febcc57SYoshihiro Takahashi void sndbuf_dma(struct snd_dbuf *b, int go);
1273febcc57SYoshihiro Takahashi int sndbuf_dmaptr(struct snd_dbuf *b);
1283febcc57SYoshihiro Takahashi void sndbuf_dmabounce(struct snd_dbuf *b);
129b611c801SAlexander Leidinger 
130b611c801SAlexander Leidinger #ifdef OSSV4_EXPERIMENT
131b611c801SAlexander Leidinger void sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp);
132b611c801SAlexander Leidinger #endif
133