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channel.h (164614) channel.h (170161)
1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/sound/pcm/channel.h 164614 2006-11-26 12:24:06Z ariff $
26 * $FreeBSD: head/sys/dev/sound/pcm/channel.h 170161 2007-05-31 18:43:33Z ariff $
27 */
28
27 */
28
29struct pcmchan_children {
30 SLIST_ENTRY(pcmchan_children) link;
31 struct pcm_channel *channel;
32};
33
34struct pcmchan_caps {
35 u_int32_t minspeed, maxspeed;
36 u_int32_t *fmtlist;
37 u_int32_t caps;
38};
39
40/* Forward declarations */
41struct pcm_channel;

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67 struct pcmchan_syncgroup *parent; /**< group head */
68 struct pcm_channel *ch;
69};
70
71#define CHN_NAMELEN 32
72struct pcm_channel {
73 kobj_t methods;
74
29struct pcmchan_caps {
30 u_int32_t minspeed, maxspeed;
31 u_int32_t *fmtlist;
32 u_int32_t caps;
33};
34
35/* Forward declarations */
36struct pcm_channel;

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62 struct pcmchan_syncgroup *parent; /**< group head */
63 struct pcm_channel *ch;
64};
65
66#define CHN_NAMELEN 32
67struct pcm_channel {
68 kobj_t methods;
69
75 int num;
76 pid_t pid;
77 int refcount;
78 struct pcm_feeder *feeder;
79 u_int32_t align;
80
81 int volume;
82 int latency;
83 u_int32_t speed;

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89 int direction;
90 unsigned int interrupts, xruns, feedcount;
91 unsigned int timeout;
92 struct snd_dbuf *bufhard, *bufsoft;
93 struct snddev_info *parentsnddev;
94 struct pcm_channel *parentchannel;
95 void *devinfo;
96 device_t dev;
70 pid_t pid;
71 int refcount;
72 struct pcm_feeder *feeder;
73 u_int32_t align;
74
75 int volume;
76 int latency;
77 u_int32_t speed;

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83 int direction;
84 unsigned int interrupts, xruns, feedcount;
85 unsigned int timeout;
86 struct snd_dbuf *bufhard, *bufsoft;
87 struct snddev_info *parentsnddev;
88 struct pcm_channel *parentchannel;
89 void *devinfo;
90 device_t dev;
91 int unit;
97 char name[CHN_NAMELEN];
98 struct mtx *lock;
92 char name[CHN_NAMELEN];
93 struct mtx *lock;
94 int trigger;
99 /**
100 * Increment,decrement this around operations that temporarily yield
101 * lock.
102 */
103 unsigned int inprog;
104 /**
105 * Special channel operations should examine @c inprog after acquiring
106 * lock. If zero, operations may continue. Else, thread should

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118 /**
119 * If part of a sync group, this will point to the syncmember
120 * container.
121 */
122 struct pcmchan_syncmember *sm;
123#ifdef OSSV4_EXPERIMENT
124 u_int16_t lpeak, rpeak; /**< Peak value from 0-32767. */
125#endif
95 /**
96 * Increment,decrement this around operations that temporarily yield
97 * lock.
98 */
99 unsigned int inprog;
100 /**
101 * Special channel operations should examine @c inprog after acquiring
102 * lock. If zero, operations may continue. Else, thread should

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114 /**
115 * If part of a sync group, this will point to the syncmember
116 * container.
117 */
118 struct pcmchan_syncmember *sm;
119#ifdef OSSV4_EXPERIMENT
120 u_int16_t lpeak, rpeak; /**< Peak value from 0-32767. */
121#endif
126 SLIST_HEAD(, pcmchan_children) children;
122
123 struct {
124 SLIST_HEAD(, pcm_channel) head;
125 SLIST_ENTRY(pcm_channel) link;
126 struct {
127 SLIST_HEAD(, pcm_channel) head;
128 SLIST_ENTRY(pcm_channel) link;
129 } busy;
130 } children;
131
132 struct {
133 struct {
134 SLIST_ENTRY(pcm_channel) link;
135 struct {
136 SLIST_ENTRY(pcm_channel) link;
137 } busy;
138 } pcm;
139 } channels;
140
141 void *data1, *data2;
127};
128
142};
143
144#define CHN_HEAD(x, y) &(x)->y.head
145#define CHN_INIT(x, y) SLIST_INIT(CHN_HEAD(x, y))
146#define CHN_LINK(y) y.link
147#define CHN_EMPTY(x, y) SLIST_EMPTY(CHN_HEAD(x, y))
148#define CHN_FIRST(x, y) SLIST_FIRST(CHN_HEAD(x, y))
149
150#define CHN_FOREACH(x, y, z) \
151 SLIST_FOREACH(x, CHN_HEAD(y, z), CHN_LINK(z))
152
153#define CHN_FOREACH_SAFE(w, x, y, z) \
154 SLIST_FOREACH_SAFE(w, CHN_HEAD(x, z), CHN_LINK(z), y)
155
156#define CHN_INSERT_HEAD(x, y, z) \
157 SLIST_INSERT_HEAD(CHN_HEAD(x, z), y, CHN_LINK(z))
158
159#define CHN_INSERT_AFTER(x, y, z) \
160 SLIST_INSERT_AFTER(x, y, CHN_LINK(z))
161
162#define CHN_REMOVE(x, y, z) \
163 SLIST_REMOVE(CHN_HEAD(x, z), y, pcm_channel, CHN_LINK(z))
164
165#define CHN_INSERT_HEAD_SAFE(x, y, z) do { \
166 struct pcm_channel *t = NULL; \
167 CHN_FOREACH(t, x, z) { \
168 if (t == y) \
169 break; \
170 } \
171 if (t != y) { \
172 CHN_INSERT_HEAD(x, y, z); \
173 } \
174} while(0)
175
176#define CHN_INSERT_AFTER_SAFE(w, x, y, z) do { \
177 struct pcm_channel *t = NULL; \
178 CHN_FOREACH(t, w, z) { \
179 if (t == y) \
180 break; \
181 } \
182 if (t != y) { \
183 CHN_INSERT_AFTER(x, y, z); \
184 } \
185} while(0)
186
187#define CHN_REMOVE_SAFE(x, y, z) do { \
188 struct pcm_channel *t = NULL; \
189 CHN_FOREACH(t, x, z) { \
190 if (t == y) \
191 break; \
192 } \
193 if (t == y) { \
194 CHN_REMOVE(x, y, z); \
195 } \
196} while(0)
197
198#define CHN_UNIT(x) (snd_unit2u((x)->unit))
199#define CHN_DEV(x) (snd_unit2d((x)->unit))
200#define CHN_CHAN(x) (snd_unit2c((x)->unit))
201
129#include "channel_if.h"
130
131int chn_reinit(struct pcm_channel *c);
132int chn_write(struct pcm_channel *c, struct uio *buf);
133int chn_read(struct pcm_channel *c, struct uio *buf);
134u_int32_t chn_start(struct pcm_channel *c, int force);
135int chn_sync(struct pcm_channel *c, int threshold);
136int chn_flush(struct pcm_channel *c);

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203int afmtstr_swap_endian(char *);
204u_int32_t afmtstr2afmt(struct afmtstr_table *, const char *, int);
205u_int32_t afmt2afmtstr(struct afmtstr_table *, u_int32_t, char *, size_t, int, int);
206
207extern int chn_latency;
208extern int chn_latency_profile;
209extern int report_soft_formats;
210
202#include "channel_if.h"
203
204int chn_reinit(struct pcm_channel *c);
205int chn_write(struct pcm_channel *c, struct uio *buf);
206int chn_read(struct pcm_channel *c, struct uio *buf);
207u_int32_t chn_start(struct pcm_channel *c, int force);
208int chn_sync(struct pcm_channel *c, int threshold);
209int chn_flush(struct pcm_channel *c);

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276int afmtstr_swap_endian(char *);
277u_int32_t afmtstr2afmt(struct afmtstr_table *, const char *, int);
278u_int32_t afmt2afmtstr(struct afmtstr_table *, u_int32_t, char *, size_t, int, int);
279
280extern int chn_latency;
281extern int chn_latency_profile;
282extern int report_soft_formats;
283
211#define PCMDIR_VIRTUAL 2
212#define PCMDIR_PLAY 1
213#define PCMDIR_REC -1
284#define PCMDIR_PLAY 1
285#define PCMDIR_PLAY_VIRTUAL 2
286#define PCMDIR_REC -1
287#define PCMDIR_REC_VIRTUAL -2
214
215#define PCMTRIG_START 1
216#define PCMTRIG_EMLDMAWR 2
217#define PCMTRIG_EMLDMARD 3
218#define PCMTRIG_STOP 0
219#define PCMTRIG_ABORT -1
220
221#define CHN_F_CLOSING 0x00000004 /* a pending close */
222#define CHN_F_ABORTING 0x00000008 /* a pending abort */
223#define CHN_F_RUNNING 0x00000010 /* dma is running */
224#define CHN_F_TRIGGERED 0x00000020
225#define CHN_F_NOTRIGGER 0x00000040
288
289#define PCMTRIG_START 1
290#define PCMTRIG_EMLDMAWR 2
291#define PCMTRIG_EMLDMARD 3
292#define PCMTRIG_STOP 0
293#define PCMTRIG_ABORT -1
294
295#define CHN_F_CLOSING 0x00000004 /* a pending close */
296#define CHN_F_ABORTING 0x00000008 /* a pending abort */
297#define CHN_F_RUNNING 0x00000010 /* dma is running */
298#define CHN_F_TRIGGERED 0x00000020
299#define CHN_F_NOTRIGGER 0x00000040
300#define CHN_F_SLEEPING 0x00000080
226
227#define CHN_F_BUSY 0x00001000 /* has been opened */
228#define CHN_F_HAS_SIZE 0x00002000 /* user set block size */
229#define CHN_F_NBIO 0x00004000 /* do non-blocking i/o */
230#define CHN_F_MAPPED 0x00010000 /* has been mmap()ed */
231#define CHN_F_DEAD 0x00020000
232#define CHN_F_BADSETTING 0x00040000
233#define CHN_F_SETBLOCKSIZE 0x00080000

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302#define CHN_F_BUSY 0x00001000 /* has been opened */
303#define CHN_F_HAS_SIZE 0x00002000 /* user set block size */
304#define CHN_F_NBIO 0x00004000 /* do non-blocking i/o */
305#define CHN_F_MAPPED 0x00010000 /* has been mmap()ed */
306#define CHN_F_DEAD 0x00020000
307#define CHN_F_BADSETTING 0x00040000
308#define CHN_F_SETBLOCKSIZE 0x00080000

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