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/*
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* QEMU ESD audio driver
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*
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* Copyright (c) 2006 Frederick Reeve (brushed up by malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <esd.h> |
25 |
#include "qemu-common.h" |
26 |
#include "audio.h" |
27 |
#include <signal.h> |
28 |
|
29 |
#define AUDIO_CAP "esd" |
30 |
#include "audio_int.h" |
31 |
#include "audio_pt_int.h" |
32 |
|
33 |
typedef struct { |
34 |
HWVoiceOut hw; |
35 |
int done;
|
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int live;
|
37 |
int decr;
|
38 |
int rpos;
|
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void *pcm_buf;
|
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int fd;
|
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struct audio_pt pt;
|
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} ESDVoiceOut; |
43 |
|
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typedef struct { |
45 |
HWVoiceIn hw; |
46 |
int done;
|
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int dead;
|
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int incr;
|
49 |
int wpos;
|
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void *pcm_buf;
|
51 |
int fd;
|
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struct audio_pt pt;
|
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} ESDVoiceIn; |
54 |
|
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static struct { |
56 |
int samples;
|
57 |
int divisor;
|
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char *dac_host;
|
59 |
char *adc_host;
|
60 |
} conf = { |
61 |
.samples = 1024,
|
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.divisor = 2,
|
63 |
}; |
64 |
|
65 |
static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...) |
66 |
{ |
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va_list ap; |
68 |
|
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va_start (ap, fmt); |
70 |
AUD_vlog (AUDIO_CAP, fmt, ap); |
71 |
va_end (ap); |
72 |
|
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AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
|
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} |
75 |
|
76 |
/* playback */
|
77 |
static void *qesd_thread_out (void *arg) |
78 |
{ |
79 |
ESDVoiceOut *esd = arg; |
80 |
HWVoiceOut *hw = &esd->hw; |
81 |
int threshold;
|
82 |
|
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threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
84 |
|
85 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
87 |
} |
88 |
|
89 |
for (;;) {
|
90 |
int decr, to_mix, rpos;
|
91 |
|
92 |
for (;;) {
|
93 |
if (esd->done) {
|
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goto exit;
|
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} |
96 |
|
97 |
if (esd->live > threshold) {
|
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break;
|
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} |
100 |
|
101 |
if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
102 |
goto exit;
|
103 |
} |
104 |
} |
105 |
|
106 |
decr = to_mix = esd->live; |
107 |
rpos = hw->rpos; |
108 |
|
109 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
111 |
} |
112 |
|
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while (to_mix) {
|
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ssize_t written; |
115 |
int chunk = audio_MIN (to_mix, hw->samples - rpos);
|
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struct st_sample *src = hw->mix_buf + rpos;
|
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|
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hw->clip (esd->pcm_buf, src, chunk); |
119 |
|
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again:
|
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written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift); |
122 |
if (written == -1) { |
123 |
if (errno == EINTR || errno == EAGAIN) {
|
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goto again;
|
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} |
126 |
qesd_logerr (errno, "write failed\n");
|
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return NULL; |
128 |
} |
129 |
|
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if (written != chunk << hw->info.shift) {
|
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int wsamples = written >> hw->info.shift;
|
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int wbytes = wsamples << hw->info.shift;
|
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if (wbytes != written) {
|
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dolog ("warning: Misaligned write %d (requested %d), "
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"alignment %d\n",
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wbytes, written, hw->info.align + 1);
|
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} |
138 |
to_mix -= wsamples; |
139 |
rpos = (rpos + wsamples) % hw->samples; |
140 |
break;
|
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} |
142 |
|
143 |
rpos = (rpos + chunk) % hw->samples; |
144 |
to_mix -= chunk; |
145 |
} |
146 |
|
147 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
149 |
} |
150 |
|
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esd->rpos = rpos; |
152 |
esd->live -= decr; |
153 |
esd->decr += decr; |
154 |
} |
155 |
|
156 |
exit:
|
157 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
158 |
return NULL; |
159 |
} |
160 |
|
161 |
static int qesd_run_out (HWVoiceOut *hw) |
162 |
{ |
163 |
int live, decr;
|
164 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
165 |
|
166 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
167 |
return 0; |
168 |
} |
169 |
|
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live = audio_pcm_hw_get_live_out (hw); |
171 |
decr = audio_MIN (live, esd->decr); |
172 |
esd->decr -= decr; |
173 |
esd->live = live - decr; |
174 |
hw->rpos = esd->rpos; |
175 |
if (esd->live > 0) { |
176 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
177 |
} |
178 |
else {
|
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audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
180 |
} |
181 |
return decr;
|
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} |
183 |
|
184 |
static int qesd_write (SWVoiceOut *sw, void *buf, int len) |
185 |
{ |
186 |
return audio_pcm_sw_write (sw, buf, len);
|
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} |
188 |
|
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static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as) |
190 |
{ |
191 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
192 |
struct audsettings obt_as = *as;
|
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int esdfmt = ESD_STREAM | ESD_PLAY;
|
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int err;
|
195 |
sigset_t set, old_set; |
196 |
|
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sigfillset (&set); |
198 |
|
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esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
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switch (as->fmt) {
|
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case AUD_FMT_S8:
|
202 |
case AUD_FMT_U8:
|
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esdfmt |= ESD_BITS8; |
204 |
obt_as.fmt = AUD_FMT_U8; |
205 |
break;
|
206 |
|
207 |
case AUD_FMT_S32:
|
208 |
case AUD_FMT_U32:
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dolog ("Will use 16 instead of 32 bit samples\n");
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210 |
|
211 |
case AUD_FMT_S16:
|
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case AUD_FMT_U16:
|
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deffmt:
|
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esdfmt |= ESD_BITS16; |
215 |
obt_as.fmt = AUD_FMT_S16; |
216 |
break;
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217 |
|
218 |
default:
|
219 |
dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
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goto deffmt;
|
221 |
|
222 |
} |
223 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
224 |
|
225 |
audio_pcm_init_info (&hw->info, &obt_as); |
226 |
|
227 |
hw->samples = conf.samples; |
228 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
229 |
if (!esd->pcm_buf) {
|
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dolog ("Could not allocate buffer (%d bytes)\n",
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hw->samples << hw->info.shift); |
232 |
return -1; |
233 |
} |
234 |
|
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esd->fd = -1;
|
236 |
err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
237 |
if (err) {
|
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qesd_logerr (err, "pthread_sigmask failed\n");
|
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goto fail1;
|
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} |
241 |
|
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esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
|
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if (esd->fd < 0) { |
244 |
qesd_logerr (errno, "esd_play_stream failed\n");
|
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goto fail2;
|
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} |
247 |
|
248 |
if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
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goto fail3;
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} |
251 |
|
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err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
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253 |
if (err) {
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qesd_logerr (err, "pthread_sigmask(restore) failed\n");
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} |
256 |
|
257 |
return 0; |
258 |
|
259 |
fail3:
|
260 |
if (close (esd->fd)) {
|
261 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
262 |
AUDIO_FUNC, esd->fd); |
263 |
} |
264 |
esd->fd = -1;
|
265 |
|
266 |
fail2:
|
267 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
268 |
if (err) {
|
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qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
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} |
271 |
|
272 |
fail1:
|
273 |
qemu_free (esd->pcm_buf); |
274 |
esd->pcm_buf = NULL;
|
275 |
return -1; |
276 |
} |
277 |
|
278 |
static void qesd_fini_out (HWVoiceOut *hw) |
279 |
{ |
280 |
void *ret;
|
281 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
282 |
|
283 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
284 |
esd->done = 1;
|
285 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
286 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
287 |
|
288 |
if (esd->fd >= 0) { |
289 |
if (close (esd->fd)) {
|
290 |
qesd_logerr (errno, "failed to close esd socket\n");
|
291 |
} |
292 |
esd->fd = -1;
|
293 |
} |
294 |
|
295 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
296 |
|
297 |
qemu_free (esd->pcm_buf); |
298 |
esd->pcm_buf = NULL;
|
299 |
} |
300 |
|
301 |
static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...) |
302 |
{ |
303 |
(void) hw;
|
304 |
(void) cmd;
|
305 |
return 0; |
306 |
} |
307 |
|
308 |
/* capture */
|
309 |
static void *qesd_thread_in (void *arg) |
310 |
{ |
311 |
ESDVoiceIn *esd = arg; |
312 |
HWVoiceIn *hw = &esd->hw; |
313 |
int threshold;
|
314 |
|
315 |
threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
316 |
|
317 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
318 |
return NULL; |
319 |
} |
320 |
|
321 |
for (;;) {
|
322 |
int incr, to_grab, wpos;
|
323 |
|
324 |
for (;;) {
|
325 |
if (esd->done) {
|
326 |
goto exit;
|
327 |
} |
328 |
|
329 |
if (esd->dead > threshold) {
|
330 |
break;
|
331 |
} |
332 |
|
333 |
if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
334 |
goto exit;
|
335 |
} |
336 |
} |
337 |
|
338 |
incr = to_grab = esd->dead; |
339 |
wpos = hw->wpos; |
340 |
|
341 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
342 |
return NULL; |
343 |
} |
344 |
|
345 |
while (to_grab) {
|
346 |
ssize_t nread; |
347 |
int chunk = audio_MIN (to_grab, hw->samples - wpos);
|
348 |
void *buf = advance (esd->pcm_buf, wpos);
|
349 |
|
350 |
again:
|
351 |
nread = read (esd->fd, buf, chunk << hw->info.shift); |
352 |
if (nread == -1) { |
353 |
if (errno == EINTR || errno == EAGAIN) {
|
354 |
goto again;
|
355 |
} |
356 |
qesd_logerr (errno, "read failed\n");
|
357 |
return NULL; |
358 |
} |
359 |
|
360 |
if (nread != chunk << hw->info.shift) {
|
361 |
int rsamples = nread >> hw->info.shift;
|
362 |
int rbytes = rsamples << hw->info.shift;
|
363 |
if (rbytes != nread) {
|
364 |
dolog ("warning: Misaligned write %d (requested %d), "
|
365 |
"alignment %d\n",
|
366 |
rbytes, nread, hw->info.align + 1);
|
367 |
} |
368 |
to_grab -= rsamples; |
369 |
wpos = (wpos + rsamples) % hw->samples; |
370 |
break;
|
371 |
} |
372 |
|
373 |
hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift, |
374 |
&nominal_volume); |
375 |
wpos = (wpos + chunk) % hw->samples; |
376 |
to_grab -= chunk; |
377 |
} |
378 |
|
379 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
380 |
return NULL; |
381 |
} |
382 |
|
383 |
esd->wpos = wpos; |
384 |
esd->dead -= incr; |
385 |
esd->incr += incr; |
386 |
} |
387 |
|
388 |
exit:
|
389 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
390 |
return NULL; |
391 |
} |
392 |
|
393 |
static int qesd_run_in (HWVoiceIn *hw) |
394 |
{ |
395 |
int live, incr, dead;
|
396 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
397 |
|
398 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
399 |
return 0; |
400 |
} |
401 |
|
402 |
live = audio_pcm_hw_get_live_in (hw); |
403 |
dead = hw->samples - live; |
404 |
incr = audio_MIN (dead, esd->incr); |
405 |
esd->incr -= incr; |
406 |
esd->dead = dead - incr; |
407 |
hw->wpos = esd->wpos; |
408 |
if (esd->dead > 0) { |
409 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
410 |
} |
411 |
else {
|
412 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
413 |
} |
414 |
return incr;
|
415 |
} |
416 |
|
417 |
static int qesd_read (SWVoiceIn *sw, void *buf, int len) |
418 |
{ |
419 |
return audio_pcm_sw_read (sw, buf, len);
|
420 |
} |
421 |
|
422 |
static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as) |
423 |
{ |
424 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
425 |
struct audsettings obt_as = *as;
|
426 |
int esdfmt = ESD_STREAM | ESD_RECORD;
|
427 |
int err;
|
428 |
sigset_t set, old_set; |
429 |
|
430 |
sigfillset (&set); |
431 |
|
432 |
esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
433 |
switch (as->fmt) {
|
434 |
case AUD_FMT_S8:
|
435 |
case AUD_FMT_U8:
|
436 |
esdfmt |= ESD_BITS8; |
437 |
obt_as.fmt = AUD_FMT_U8; |
438 |
break;
|
439 |
|
440 |
case AUD_FMT_S16:
|
441 |
case AUD_FMT_U16:
|
442 |
esdfmt |= ESD_BITS16; |
443 |
obt_as.fmt = AUD_FMT_S16; |
444 |
break;
|
445 |
|
446 |
case AUD_FMT_S32:
|
447 |
case AUD_FMT_U32:
|
448 |
dolog ("Will use 16 instead of 32 bit samples\n");
|
449 |
esdfmt |= ESD_BITS16; |
450 |
obt_as.fmt = AUD_FMT_S16; |
451 |
break;
|
452 |
} |
453 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
454 |
|
455 |
audio_pcm_init_info (&hw->info, &obt_as); |
456 |
|
457 |
hw->samples = conf.samples; |
458 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
459 |
if (!esd->pcm_buf) {
|
460 |
dolog ("Could not allocate buffer (%d bytes)\n",
|
461 |
hw->samples << hw->info.shift); |
462 |
return -1; |
463 |
} |
464 |
|
465 |
esd->fd = -1;
|
466 |
|
467 |
err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
468 |
if (err) {
|
469 |
qesd_logerr (err, "pthread_sigmask failed\n");
|
470 |
goto fail1;
|
471 |
} |
472 |
|
473 |
esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
|
474 |
if (esd->fd < 0) { |
475 |
qesd_logerr (errno, "esd_record_stream failed\n");
|
476 |
goto fail2;
|
477 |
} |
478 |
|
479 |
if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
480 |
goto fail3;
|
481 |
} |
482 |
|
483 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
484 |
if (err) {
|
485 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
486 |
} |
487 |
|
488 |
return 0; |
489 |
|
490 |
fail3:
|
491 |
if (close (esd->fd)) {
|
492 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
493 |
AUDIO_FUNC, esd->fd); |
494 |
} |
495 |
esd->fd = -1;
|
496 |
|
497 |
fail2:
|
498 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
499 |
if (err) {
|
500 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
501 |
} |
502 |
|
503 |
fail1:
|
504 |
qemu_free (esd->pcm_buf); |
505 |
esd->pcm_buf = NULL;
|
506 |
return -1; |
507 |
} |
508 |
|
509 |
static void qesd_fini_in (HWVoiceIn *hw) |
510 |
{ |
511 |
void *ret;
|
512 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
513 |
|
514 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
515 |
esd->done = 1;
|
516 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
517 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
518 |
|
519 |
if (esd->fd >= 0) { |
520 |
if (close (esd->fd)) {
|
521 |
qesd_logerr (errno, "failed to close esd socket\n");
|
522 |
} |
523 |
esd->fd = -1;
|
524 |
} |
525 |
|
526 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
527 |
|
528 |
qemu_free (esd->pcm_buf); |
529 |
esd->pcm_buf = NULL;
|
530 |
} |
531 |
|
532 |
static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...) |
533 |
{ |
534 |
(void) hw;
|
535 |
(void) cmd;
|
536 |
return 0; |
537 |
} |
538 |
|
539 |
/* common */
|
540 |
static void *qesd_audio_init (void) |
541 |
{ |
542 |
return &conf;
|
543 |
} |
544 |
|
545 |
static void qesd_audio_fini (void *opaque) |
546 |
{ |
547 |
(void) opaque;
|
548 |
ldebug ("esd_fini");
|
549 |
} |
550 |
|
551 |
struct audio_option qesd_options[] = {
|
552 |
{ |
553 |
.name = "SAMPLES",
|
554 |
.tag = AUD_OPT_INT, |
555 |
.valp = &conf.samples, |
556 |
.descr = "buffer size in samples"
|
557 |
}, |
558 |
{ |
559 |
.name = "DIVISOR",
|
560 |
.tag = AUD_OPT_INT, |
561 |
.valp = &conf.divisor, |
562 |
.descr = "threshold divisor"
|
563 |
}, |
564 |
{ |
565 |
.name = "DAC_HOST",
|
566 |
.tag = AUD_OPT_STR, |
567 |
.valp = &conf.dac_host, |
568 |
.descr = "playback host"
|
569 |
}, |
570 |
{ |
571 |
.name = "ADC_HOST",
|
572 |
.tag = AUD_OPT_STR, |
573 |
.valp = &conf.adc_host, |
574 |
.descr = "capture host"
|
575 |
}, |
576 |
{ /* End of list */ }
|
577 |
}; |
578 |
|
579 |
static struct audio_pcm_ops qesd_pcm_ops = { |
580 |
.init_out = qesd_init_out, |
581 |
.fini_out = qesd_fini_out, |
582 |
.run_out = qesd_run_out, |
583 |
.write = qesd_write, |
584 |
.ctl_out = qesd_ctl_out, |
585 |
|
586 |
.init_in = qesd_init_in, |
587 |
.fini_in = qesd_fini_in, |
588 |
.run_in = qesd_run_in, |
589 |
.read = qesd_read, |
590 |
.ctl_in = qesd_ctl_in, |
591 |
}; |
592 |
|
593 |
struct audio_driver esd_audio_driver = {
|
594 |
.name = "esd",
|
595 |
.descr = "http://en.wikipedia.org/wiki/Esound",
|
596 |
.options = qesd_options, |
597 |
.init = qesd_audio_init, |
598 |
.fini = qesd_audio_fini, |
599 |
.pcm_ops = &qesd_pcm_ops, |
600 |
.can_be_default = 0,
|
601 |
.max_voices_out = INT_MAX, |
602 |
.max_voices_in = INT_MAX, |
603 |
.voice_size_out = sizeof (ESDVoiceOut),
|
604 |
.voice_size_in = sizeof (ESDVoiceIn)
|
605 |
}; |