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/* $OpenBSD: siofile.c,v 1.14 2017/07/20 10:23:45 ratchov Exp $ */ |
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/* |
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* Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/time.h> |
18 |
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#include <sys/types.h> |
19 |
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20 |
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#include <poll.h> |
21 |
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#include <sndio.h> |
22 |
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#include <stdio.h> |
23 |
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#include <stdlib.h> |
24 |
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#include <string.h> |
25 |
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26 |
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#include "abuf.h" |
27 |
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#include "defs.h" |
28 |
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#include "dev.h" |
29 |
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#include "dsp.h" |
30 |
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#include "fdpass.h" |
31 |
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#include "file.h" |
32 |
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#include "siofile.h" |
33 |
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#include "utils.h" |
34 |
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35 |
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#define WATCHDOG_USEC 4000000 /* 4 seconds */ |
36 |
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37 |
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void dev_sio_onmove(void *, int); |
38 |
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void dev_sio_timeout(void *); |
39 |
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int dev_sio_pollfd(void *, struct pollfd *); |
40 |
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int dev_sio_revents(void *, struct pollfd *); |
41 |
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void dev_sio_run(void *); |
42 |
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void dev_sio_hup(void *); |
43 |
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44 |
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struct fileops dev_sio_ops = { |
45 |
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"sio", |
46 |
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dev_sio_pollfd, |
47 |
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dev_sio_revents, |
48 |
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dev_sio_run, |
49 |
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dev_sio_run, |
50 |
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dev_sio_hup |
51 |
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}; |
52 |
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53 |
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void |
54 |
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dev_sio_onmove(void *arg, int delta) |
55 |
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{ |
56 |
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struct dev *d = arg; |
57 |
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58 |
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#ifdef DEBUG |
59 |
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if (log_level >= 4) { |
60 |
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dev_log(d); |
61 |
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log_puts(": tick, delta = "); |
62 |
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log_puti(delta); |
63 |
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log_puts("\n"); |
64 |
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} |
65 |
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d->sio.sum_utime += file_utime - d->sio.utime; |
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d->sio.sum_wtime += file_wtime - d->sio.wtime; |
67 |
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d->sio.wtime = file_wtime; |
68 |
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d->sio.utime = file_utime; |
69 |
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if (d->mode & MODE_PLAY) |
70 |
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d->sio.pused -= delta; |
71 |
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if (d->mode & MODE_REC) |
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d->sio.rused += delta; |
73 |
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#endif |
74 |
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dev_onmove(d, delta); |
75 |
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} |
76 |
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77 |
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void |
78 |
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dev_sio_timeout(void *arg) |
79 |
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{ |
80 |
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struct dev *d = arg; |
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|
82 |
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dev_log(d); |
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log_puts(": watchdog timeout\n"); |
84 |
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dev_close(d); |
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} |
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87 |
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/* |
88 |
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* open the device. |
89 |
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*/ |
90 |
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int |
91 |
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dev_sio_open(struct dev *d) |
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{ |
93 |
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struct sio_par par; |
94 |
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unsigned int mode = d->mode & (MODE_PLAY | MODE_REC); |
95 |
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|
96 |
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d->sio.hdl = fdpass_sio_open(d->num, mode); |
97 |
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if (d->sio.hdl == NULL) { |
98 |
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if (mode != (SIO_PLAY | SIO_REC)) |
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return 0; |
100 |
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d->sio.hdl = fdpass_sio_open(d->num, SIO_PLAY); |
101 |
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if (d->sio.hdl != NULL) |
102 |
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mode = SIO_PLAY; |
103 |
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else { |
104 |
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d->sio.hdl = fdpass_sio_open(d->num, SIO_REC); |
105 |
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if (d->sio.hdl != NULL) |
106 |
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mode = SIO_REC; |
107 |
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else |
108 |
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return 0; |
109 |
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} |
110 |
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if (log_level >= 1) { |
111 |
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log_puts("warning, device opened in "); |
112 |
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log_puts(mode == SIO_PLAY ? "play-only" : "rec-only"); |
113 |
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log_puts(" mode\n"); |
114 |
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} |
115 |
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} |
116 |
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sio_initpar(&par); |
117 |
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par.bits = d->par.bits; |
118 |
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par.bps = d->par.bps; |
119 |
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par.sig = d->par.sig; |
120 |
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par.le = d->par.le; |
121 |
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par.msb = d->par.msb; |
122 |
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if (mode & SIO_PLAY) |
123 |
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par.pchan = d->pchan; |
124 |
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if (mode & SIO_REC) |
125 |
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par.rchan = d->rchan; |
126 |
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if (d->bufsz) |
127 |
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par.appbufsz = d->bufsz; |
128 |
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if (d->round) |
129 |
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par.round = d->round; |
130 |
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if (d->rate) |
131 |
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par.rate = d->rate; |
132 |
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if (!sio_setpar(d->sio.hdl, &par)) |
133 |
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goto bad_close; |
134 |
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if (!sio_getpar(d->sio.hdl, &par)) |
135 |
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goto bad_close; |
136 |
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137 |
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#ifdef DEBUG |
138 |
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/* |
139 |
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* We support any parameter combination exposed by the kernel, |
140 |
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* and we have no other choice than trusting the kernel for |
141 |
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* returning correct parameters. But let's check parameters |
142 |
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* early and nicely report kernel bugs rather than crashing |
143 |
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* later in memset(), malloc() or alike. |
144 |
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*/ |
145 |
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146 |
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if (par.bits > BITS_MAX) { |
147 |
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log_puts(d->path); |
148 |
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log_puts(": "); |
149 |
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log_putu(par.bits); |
150 |
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log_puts(": unsupported number of bits\n"); |
151 |
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goto bad_close; |
152 |
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} |
153 |
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if (par.bps > SIO_BPS(BITS_MAX)) { |
154 |
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log_puts(d->path); |
155 |
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log_puts(": "); |
156 |
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log_putu(par.bps); |
157 |
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log_puts(": unsupported sample size\n"); |
158 |
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goto bad_close; |
159 |
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} |
160 |
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if ((mode & SIO_PLAY) && par.pchan > NCHAN_MAX) { |
161 |
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log_puts(d->path); |
162 |
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log_puts(": "); |
163 |
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log_putu(par.pchan); |
164 |
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log_puts(": unsupported number of play channels\n"); |
165 |
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goto bad_close; |
166 |
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} |
167 |
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if ((mode & SIO_REC) && par.rchan > NCHAN_MAX) { |
168 |
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log_puts(d->path); |
169 |
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log_puts(": "); |
170 |
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log_putu(par.rchan); |
171 |
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log_puts(": unsupported number of rec channels\n"); |
172 |
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goto bad_close; |
173 |
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} |
174 |
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if (par.bufsz == 0 || par.bufsz > RATE_MAX) { |
175 |
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log_puts(d->path); |
176 |
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log_puts(": "); |
177 |
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log_putu(par.bufsz); |
178 |
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log_puts(": unsupported buffer size\n"); |
179 |
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goto bad_close; |
180 |
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} |
181 |
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if (par.round == 0 || par.round > par.bufsz || |
182 |
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par.bufsz % par.round != 0) { |
183 |
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log_puts(d->path); |
184 |
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log_puts(": "); |
185 |
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log_putu(par.round); |
186 |
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log_puts(": unsupported block size\n"); |
187 |
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goto bad_close; |
188 |
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} |
189 |
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if (par.rate == 0 || par.rate > RATE_MAX) { |
190 |
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log_puts(d->path); |
191 |
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log_puts(": "); |
192 |
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log_putu(par.rate); |
193 |
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log_puts(": unsupported rate\n"); |
194 |
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goto bad_close; |
195 |
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} |
196 |
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#endif |
197 |
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198 |
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d->par.bits = par.bits; |
199 |
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d->par.bps = par.bps; |
200 |
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d->par.sig = par.sig; |
201 |
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d->par.le = par.le; |
202 |
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d->par.msb = par.msb; |
203 |
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if (mode & SIO_PLAY) |
204 |
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d->pchan = par.pchan; |
205 |
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if (mode & SIO_REC) |
206 |
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d->rchan = par.rchan; |
207 |
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d->bufsz = par.bufsz; |
208 |
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d->round = par.round; |
209 |
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d->rate = par.rate; |
210 |
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if (!(mode & MODE_PLAY)) |
211 |
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d->mode &= ~(MODE_PLAY | MODE_MON); |
212 |
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if (!(mode & MODE_REC)) |
213 |
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d->mode &= ~MODE_REC; |
214 |
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sio_onmove(d->sio.hdl, dev_sio_onmove, d); |
215 |
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d->sio.file = file_new(&dev_sio_ops, d, d->path, sio_nfds(d->sio.hdl)); |
216 |
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timo_set(&d->sio.watchdog, dev_sio_timeout, d); |
217 |
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return 1; |
218 |
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bad_close: |
219 |
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sio_close(d->sio.hdl); |
220 |
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return 0; |
221 |
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} |
222 |
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223 |
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void |
224 |
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dev_sio_close(struct dev *d) |
225 |
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{ |
226 |
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#ifdef DEBUG |
227 |
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if (log_level >= 3) { |
228 |
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dev_log(d); |
229 |
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log_puts(": closed\n"); |
230 |
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} |
231 |
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#endif |
232 |
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timo_del(&d->sio.watchdog); |
233 |
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file_del(d->sio.file); |
234 |
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sio_close(d->sio.hdl); |
235 |
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} |
236 |
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|
237 |
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void |
238 |
|
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dev_sio_start(struct dev *d) |
239 |
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{ |
240 |
|
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if (!sio_start(d->sio.hdl)) { |
241 |
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if (log_level >= 1) { |
242 |
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dev_log(d); |
243 |
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log_puts(": failed to start device\n"); |
244 |
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} |
245 |
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return; |
246 |
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} |
247 |
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if (d->mode & MODE_PLAY) { |
248 |
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d->sio.cstate = DEV_SIO_CYCLE; |
249 |
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d->sio.todo = 0; |
250 |
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} else { |
251 |
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d->sio.cstate = DEV_SIO_READ; |
252 |
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d->sio.todo = d->round * d->rchan * d->par.bps; |
253 |
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} |
254 |
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#ifdef DEBUG |
255 |
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d->sio.pused = 0; |
256 |
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d->sio.rused = 0; |
257 |
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d->sio.sum_utime = 0; |
258 |
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d->sio.sum_wtime = 0; |
259 |
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d->sio.wtime = file_wtime; |
260 |
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d->sio.utime = file_utime; |
261 |
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if (log_level >= 3) { |
262 |
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dev_log(d); |
263 |
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log_puts(": started\n"); |
264 |
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} |
265 |
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#endif |
266 |
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timo_add(&d->sio.watchdog, WATCHDOG_USEC); |
267 |
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} |
268 |
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|
269 |
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void |
270 |
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dev_sio_stop(struct dev *d) |
271 |
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{ |
272 |
|
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if (!sio_eof(d->sio.hdl) && !sio_stop(d->sio.hdl)) { |
273 |
|
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if (log_level >= 1) { |
274 |
|
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dev_log(d); |
275 |
|
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log_puts(": failed to stop device\n"); |
276 |
|
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} |
277 |
|
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return; |
278 |
|
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} |
279 |
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#ifdef DEBUG |
280 |
|
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if (log_level >= 3) { |
281 |
|
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dev_log(d); |
282 |
|
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log_puts(": stopped, load avg = "); |
283 |
|
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log_puti(d->sio.sum_utime / 1000); |
284 |
|
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log_puts(" / "); |
285 |
|
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log_puti(d->sio.sum_wtime / 1000); |
286 |
|
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log_puts("\n"); |
287 |
|
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} |
288 |
|
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#endif |
289 |
|
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timo_del(&d->sio.watchdog); |
290 |
|
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} |
291 |
|
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|
292 |
|
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int |
293 |
|
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dev_sio_pollfd(void *arg, struct pollfd *pfd) |
294 |
|
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{ |
295 |
|
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struct dev *d = arg; |
296 |
|
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int events; |
297 |
|
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|
298 |
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events = (d->sio.cstate == DEV_SIO_READ) ? POLLIN : POLLOUT; |
299 |
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return sio_pollfd(d->sio.hdl, pfd, events); |
300 |
|
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} |
301 |
|
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|
302 |
|
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int |
303 |
|
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dev_sio_revents(void *arg, struct pollfd *pfd) |
304 |
|
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{ |
305 |
|
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struct dev *d = arg; |
306 |
|
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int events; |
307 |
|
|
|
308 |
|
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events = sio_revents(d->sio.hdl, pfd); |
309 |
|
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#ifdef DEBUG |
310 |
|
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d->sio.events = events; |
311 |
|
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#endif |
312 |
|
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return events; |
313 |
|
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} |
314 |
|
|
|
315 |
|
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void |
316 |
|
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dev_sio_run(void *arg) |
317 |
|
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{ |
318 |
|
|
struct dev *d = arg; |
319 |
|
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unsigned char *data, *base; |
320 |
|
|
unsigned int n; |
321 |
|
|
|
322 |
|
|
/* |
323 |
|
|
* sio_read() and sio_write() would block at the end of the |
324 |
|
|
* cycle so we *must* return and restart poll()'ing. Otherwise |
325 |
|
|
* we may trigger dev_cycle() which would make all clients |
326 |
|
|
* underrun (ex, on a play-only device) |
327 |
|
|
*/ |
328 |
|
|
for (;;) { |
329 |
|
|
if (d->pstate != DEV_RUN) |
330 |
|
|
return; |
331 |
|
|
switch (d->sio.cstate) { |
332 |
|
|
case DEV_SIO_READ: |
333 |
|
|
#ifdef DEBUG |
334 |
|
|
if (!(d->sio.events & POLLIN)) { |
335 |
|
|
dev_log(d); |
336 |
|
|
log_puts(": recording, but POLLIN not set\n"); |
337 |
|
|
panic(); |
338 |
|
|
} |
339 |
|
|
if (d->sio.todo == 0) { |
340 |
|
|
dev_log(d); |
341 |
|
|
log_puts(": can't read data\n"); |
342 |
|
|
panic(); |
343 |
|
|
} |
344 |
|
|
if (d->prime > 0) { |
345 |
|
|
dev_log(d); |
346 |
|
|
log_puts(": unexpected data\n"); |
347 |
|
|
panic(); |
348 |
|
|
} |
349 |
|
|
#endif |
350 |
|
|
base = d->decbuf ? d->decbuf : (unsigned char *)d->rbuf; |
351 |
|
|
data = base + |
352 |
|
|
d->rchan * d->round * d->par.bps - |
353 |
|
|
d->sio.todo; |
354 |
|
|
n = sio_read(d->sio.hdl, data, d->sio.todo); |
355 |
|
|
d->sio.todo -= n; |
356 |
|
|
#ifdef DEBUG |
357 |
|
|
if (log_level >= 4) { |
358 |
|
|
dev_log(d); |
359 |
|
|
log_puts(": read "); |
360 |
|
|
log_putu(n); |
361 |
|
|
log_puts(": bytes, todo "); |
362 |
|
|
log_putu(d->sio.todo); |
363 |
|
|
log_puts("/"); |
364 |
|
|
log_putu(d->round * d->rchan * d->par.bps); |
365 |
|
|
log_puts("\n"); |
366 |
|
|
} |
367 |
|
|
#endif |
368 |
|
|
if (d->sio.todo > 0) |
369 |
|
|
return; |
370 |
|
|
#ifdef DEBUG |
371 |
|
|
d->sio.rused -= d->round; |
372 |
|
|
if (log_level >= 2) { |
373 |
|
|
if (d->sio.rused >= d->round) { |
374 |
|
|
dev_log(d); |
375 |
|
|
log_puts(": rec hw xrun, rused = "); |
376 |
|
|
log_puti(d->sio.rused); |
377 |
|
|
log_puts("/"); |
378 |
|
|
log_puti(d->bufsz); |
379 |
|
|
log_puts("\n"); |
380 |
|
|
} |
381 |
|
|
if (d->sio.rused < 0 || |
382 |
|
|
d->sio.rused >= d->bufsz) { |
383 |
|
|
dev_log(d); |
384 |
|
|
log_puts(": out of bounds rused = "); |
385 |
|
|
log_puti(d->sio.rused); |
386 |
|
|
log_puts("/"); |
387 |
|
|
log_puti(d->bufsz); |
388 |
|
|
log_puts("\n"); |
389 |
|
|
} |
390 |
|
|
} |
391 |
|
|
#endif |
392 |
|
|
d->sio.cstate = DEV_SIO_CYCLE; |
393 |
|
|
break; |
394 |
|
|
case DEV_SIO_CYCLE: |
395 |
|
|
timo_del(&d->sio.watchdog); |
396 |
|
|
timo_add(&d->sio.watchdog, WATCHDOG_USEC); |
397 |
|
|
|
398 |
|
|
#ifdef DEBUG |
399 |
|
|
/* |
400 |
|
|
* check that we're called at cycle boundary: |
401 |
|
|
* either after a recorded block, or when POLLOUT is |
402 |
|
|
* raised |
403 |
|
|
*/ |
404 |
|
|
if (!((d->mode & MODE_REC) && d->prime == 0) && |
405 |
|
|
!(d->sio.events & POLLOUT)) { |
406 |
|
|
dev_log(d); |
407 |
|
|
log_puts(": cycle not at block boundary\n"); |
408 |
|
|
panic(); |
409 |
|
|
} |
410 |
|
|
#endif |
411 |
|
|
dev_cycle(d); |
412 |
|
|
if (d->mode & MODE_PLAY) { |
413 |
|
|
d->sio.cstate = DEV_SIO_WRITE; |
414 |
|
|
d->sio.todo = d->round * d->pchan * d->par.bps; |
415 |
|
|
break; |
416 |
|
|
} else { |
417 |
|
|
d->sio.cstate = DEV_SIO_READ; |
418 |
|
|
d->sio.todo = d->round * d->rchan * d->par.bps; |
419 |
|
|
return; |
420 |
|
|
} |
421 |
|
|
case DEV_SIO_WRITE: |
422 |
|
|
#ifdef DEBUG |
423 |
|
|
if (d->sio.todo == 0) { |
424 |
|
|
dev_log(d); |
425 |
|
|
log_puts(": can't write data\n"); |
426 |
|
|
panic(); |
427 |
|
|
} |
428 |
|
|
#endif |
429 |
|
|
base = d->encbuf ? d->encbuf : (unsigned char *)DEV_PBUF(d); |
430 |
|
|
data = base + |
431 |
|
|
d->pchan * d->round * d->par.bps - |
432 |
|
|
d->sio.todo; |
433 |
|
|
n = sio_write(d->sio.hdl, data, d->sio.todo); |
434 |
|
|
d->sio.todo -= n; |
435 |
|
|
#ifdef DEBUG |
436 |
|
|
if (log_level >= 4) { |
437 |
|
|
dev_log(d); |
438 |
|
|
log_puts(": wrote "); |
439 |
|
|
log_putu(n); |
440 |
|
|
log_puts(" bytes, todo "); |
441 |
|
|
log_putu(d->sio.todo); |
442 |
|
|
log_puts("/"); |
443 |
|
|
log_putu(d->round * d->pchan * d->par.bps); |
444 |
|
|
log_puts("\n"); |
445 |
|
|
} |
446 |
|
|
#endif |
447 |
|
|
if (d->sio.todo > 0) |
448 |
|
|
return; |
449 |
|
|
#ifdef DEBUG |
450 |
|
|
d->sio.pused += d->round; |
451 |
|
|
if (log_level >= 2) { |
452 |
|
|
if (d->prime == 0 && |
453 |
|
|
d->sio.pused <= d->bufsz - d->round) { |
454 |
|
|
dev_log(d); |
455 |
|
|
log_puts(": play hw xrun, pused = "); |
456 |
|
|
log_puti(d->sio.pused); |
457 |
|
|
log_puts("/"); |
458 |
|
|
log_puti(d->bufsz); |
459 |
|
|
log_puts("\n"); |
460 |
|
|
} |
461 |
|
|
if (d->sio.pused < 0 || |
462 |
|
|
d->sio.pused > d->bufsz) { |
463 |
|
|
/* device driver or libsndio bug */ |
464 |
|
|
dev_log(d); |
465 |
|
|
log_puts(": out of bounds pused = "); |
466 |
|
|
log_puti(d->sio.pused); |
467 |
|
|
log_puts("/"); |
468 |
|
|
log_puti(d->bufsz); |
469 |
|
|
log_puts("\n"); |
470 |
|
|
} |
471 |
|
|
} |
472 |
|
|
#endif |
473 |
|
|
d->poffs += d->round; |
474 |
|
|
if (d->poffs == d->psize) |
475 |
|
|
d->poffs = 0; |
476 |
|
|
if ((d->mode & MODE_REC) && d->prime == 0) { |
477 |
|
|
d->sio.cstate = DEV_SIO_READ; |
478 |
|
|
d->sio.todo = d->round * d->rchan * d->par.bps; |
479 |
|
|
} else |
480 |
|
|
d->sio.cstate = DEV_SIO_CYCLE; |
481 |
|
|
return; |
482 |
|
|
} |
483 |
|
|
} |
484 |
|
|
} |
485 |
|
|
|
486 |
|
|
void |
487 |
|
|
dev_sio_hup(void *arg) |
488 |
|
|
{ |
489 |
|
|
struct dev *d = arg; |
490 |
|
|
|
491 |
|
|
#ifdef DEBUG |
492 |
|
|
if (log_level >= 2) { |
493 |
|
|
dev_log(d); |
494 |
|
|
log_puts(": disconnected\n"); |
495 |
|
|
} |
496 |
|
|
#endif |
497 |
|
|
dev_close(d); |
498 |
|
|
} |