1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/*
* Copyright (c) 2026 Abdelkader Boudih <freebsd@seuros.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
/* newpcm channel integration for fwisound(4). */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/taskqueue.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/fwisound.h>
#include <dev/sound/pcm/sound.h>
#define FWISOUND_BUFSZ 65536
static void *
fwisound_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
struct pcm_channel *c, int dir)
{
struct fwisound_softc *sc = devinfo;
struct fwisound_chan *chan;
void *buf;
unsigned int bufsz;
if (dir != PCMDIR_REC)
return (NULL);
chan = malloc(sizeof(*chan), M_DEVBUF, M_WAITOK | M_ZERO);
chan->sc = sc;
chan->pcm_chan = c;
chan->buf = b;
chan->fmts[0] = SND_FORMAT(AFMT_S16_BE, 2, 0);
chan->fmts[1] = 0;
chan->caps.minspeed = 48000;
chan->caps.maxspeed = 48000;
chan->caps.fmtlist = chan->fmts;
chan->caps.caps = 0;
bufsz = pcm_getbuffersize(sc->pcm_dev, 4096, FWISOUND_BUFSZ, 131072);
buf = malloc(bufsz, M_DEVBUF, M_WAITOK | M_ZERO);
if (sndbuf_setup(b, buf, bufsz) != 0) {
free(buf, M_DEVBUF);
free(chan, M_DEVBUF);
return (NULL);
}
FWISOUND_LOCK(sc);
sc->chan = chan;
FWISOUND_UNLOCK(sc);
return (chan);
}
static int
fwisound_chan_free(kobj_t obj, void *data)
{
struct fwisound_chan *chan = data;
struct fwisound_softc *sc = chan->sc;
void *buf;
if (chan->running) {
taskqueue_enqueue(taskqueue_thread, &sc->stop_task);
taskqueue_drain(taskqueue_thread, &sc->stop_task);
}
FWISOUND_LOCK(sc);
sc->chan = NULL;
FWISOUND_UNLOCK(sc);
buf = sndbuf_getbufofs(chan->buf, 0);
if (buf != NULL)
free(buf, M_DEVBUF);
free(chan, M_DEVBUF);
return (0);
}
static int
fwisound_chan_setformat(kobj_t obj, void *data, uint32_t fmt)
{
if (fmt != SND_FORMAT(AFMT_S16_BE, 2, 0))
return (EINVAL);
return (0);
}
static uint32_t
fwisound_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
{
return (48000);
}
static uint32_t
fwisound_chan_setblocksize(kobj_t obj, void *data, uint32_t blksz)
{
struct fwisound_chan *chan = data;
blksz = rounddown(blksz, 4);
if (blksz < 4)
blksz = 4;
sndbuf_resize(chan->buf, chan->buf->bufsize / blksz, blksz);
return (chan->buf->blksz);
}
static int
fwisound_chan_trigger(kobj_t obj, void *data, int go)
{
struct fwisound_chan *chan = data;
struct fwisound_softc *sc = chan->sc;
switch (go) {
case PCMTRIG_START:
chan->hw_ptr = 0;
sc->dropped = 0;
sc->sample_total = 0;
chan->running = 1;
taskqueue_enqueue(taskqueue_thread, &sc->start_task);
return (0);
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
chan->running = 0;
taskqueue_drain(taskqueue_thread, &sc->start_task);
taskqueue_enqueue(taskqueue_thread, &sc->stop_task);
return (0);
default:
return (0);
}
}
static uint32_t
fwisound_chan_getptr(kobj_t obj, void *data)
{
struct fwisound_chan *chan = data;
return (chan->hw_ptr % chan->buf->bufsize);
}
static struct pcmchan_caps *
fwisound_chan_getcaps(kobj_t obj, void *data)
{
struct fwisound_chan *chan = data;
return (&chan->caps);
}
static kobj_method_t fwisound_chan_methods[] = {
KOBJMETHOD(channel_init, fwisound_chan_init),
KOBJMETHOD(channel_free, fwisound_chan_free),
KOBJMETHOD(channel_setformat, fwisound_chan_setformat),
KOBJMETHOD(channel_setspeed, fwisound_chan_setspeed),
KOBJMETHOD(channel_setblocksize, fwisound_chan_setblocksize),
KOBJMETHOD(channel_trigger, fwisound_chan_trigger),
KOBJMETHOD(channel_getptr, fwisound_chan_getptr),
KOBJMETHOD(channel_getcaps, fwisound_chan_getcaps),
KOBJMETHOD_END
};
CHANNEL_DECLARE(fwisound_chan);
static int
fwisound_pcm_probe(device_t dev)
{
device_set_desc(dev, "Apple FireWire audio");
return (0);
}
static int
fwisound_pcm_attach(device_t dev)
{
struct fwisound_softc *sc;
char status[SND_STATUSLEN];
int err;
sc = device_get_softc(device_get_parent(dev));
sc->pcm_dev = dev;
pcm_init(dev, sc);
pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
err = pcm_addchan(dev, PCMDIR_REC, &fwisound_chan_class, sc);
if (err != 0) {
device_printf(dev, "pcm_addchan failed: %d\n", err);
return (err);
}
snprintf(status, sizeof(status), "Apple FireWire audio at %s",
device_get_nameunit(device_get_parent(dev)));
return (pcm_register(dev, status));
}
static int
fwisound_pcm_detach(device_t dev)
{
return (pcm_unregister(dev));
}
static device_method_t fwisound_pcm_methods[] = {
DEVMETHOD(device_probe, fwisound_pcm_probe),
DEVMETHOD(device_attach, fwisound_pcm_attach),
DEVMETHOD(device_detach, fwisound_pcm_detach),
DEVMETHOD_END
};
static driver_t fwisound_pcm_driver = {
"pcm",
fwisound_pcm_methods,
PCM_SOFTC_SIZE,
};
DRIVER_MODULE(fwisound_pcm, fwisound, fwisound_pcm_driver, 0, 0);
MODULE_DEPEND(fwisound_pcm, fwisound, 1, 1, 1);
MODULE_DEPEND(fwisound_pcm, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
|
