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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 |
|
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#define AUDIO_CAP "esd" |
29 |
#include "audio_int.h" |
30 |
#include "audio_pt_int.h" |
31 |
|
32 |
typedef struct { |
33 |
HWVoiceOut hw; |
34 |
int done;
|
35 |
int live;
|
36 |
int decr;
|
37 |
int rpos;
|
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void *pcm_buf;
|
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int fd;
|
40 |
struct audio_pt pt;
|
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} ESDVoiceOut; |
42 |
|
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typedef struct { |
44 |
HWVoiceIn hw; |
45 |
int done;
|
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int dead;
|
47 |
int incr;
|
48 |
int wpos;
|
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void *pcm_buf;
|
50 |
int fd;
|
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struct audio_pt pt;
|
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} ESDVoiceIn; |
53 |
|
54 |
static struct { |
55 |
int samples;
|
56 |
int divisor;
|
57 |
char *dac_host;
|
58 |
char *adc_host;
|
59 |
} conf = { |
60 |
.samples = 1024,
|
61 |
.divisor = 2,
|
62 |
}; |
63 |
|
64 |
static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...) |
65 |
{ |
66 |
va_list ap; |
67 |
|
68 |
va_start (ap, fmt); |
69 |
AUD_vlog (AUDIO_CAP, fmt, ap); |
70 |
va_end (ap); |
71 |
|
72 |
AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
|
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} |
74 |
|
75 |
/* playback */
|
76 |
static void *qesd_thread_out (void *arg) |
77 |
{ |
78 |
ESDVoiceOut *esd = arg; |
79 |
HWVoiceOut *hw = &esd->hw; |
80 |
int threshold;
|
81 |
|
82 |
threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
83 |
|
84 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
86 |
} |
87 |
|
88 |
for (;;) {
|
89 |
int decr, to_mix, rpos;
|
90 |
|
91 |
for (;;) {
|
92 |
if (esd->done) {
|
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goto exit;
|
94 |
} |
95 |
|
96 |
if (esd->live > threshold) {
|
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break;
|
98 |
} |
99 |
|
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if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
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goto exit;
|
102 |
} |
103 |
} |
104 |
|
105 |
decr = to_mix = esd->live; |
106 |
rpos = hw->rpos; |
107 |
|
108 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
110 |
} |
111 |
|
112 |
while (to_mix) {
|
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ssize_t written; |
114 |
int chunk = audio_MIN (to_mix, hw->samples - rpos);
|
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struct st_sample *src = hw->mix_buf + rpos;
|
116 |
|
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hw->clip (esd->pcm_buf, src, chunk); |
118 |
|
119 |
again:
|
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written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift); |
121 |
if (written == -1) { |
122 |
if (errno == EINTR || errno == EAGAIN) {
|
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goto again;
|
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} |
125 |
qesd_logerr (errno, "write failed\n");
|
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return NULL; |
127 |
} |
128 |
|
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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 %zd), "
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"alignment %d\n",
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wbytes, written, hw->info.align + 1);
|
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} |
137 |
to_mix -= wsamples; |
138 |
rpos = (rpos + wsamples) % hw->samples; |
139 |
break;
|
140 |
} |
141 |
|
142 |
rpos = (rpos + chunk) % hw->samples; |
143 |
to_mix -= chunk; |
144 |
} |
145 |
|
146 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
148 |
} |
149 |
|
150 |
esd->rpos = rpos; |
151 |
esd->live -= decr; |
152 |
esd->decr += decr; |
153 |
} |
154 |
|
155 |
exit:
|
156 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
157 |
return NULL; |
158 |
} |
159 |
|
160 |
static int qesd_run_out (HWVoiceOut *hw, int live) |
161 |
{ |
162 |
int decr;
|
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ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
164 |
|
165 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
166 |
return 0; |
167 |
} |
168 |
|
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decr = audio_MIN (live, esd->decr); |
170 |
esd->decr -= decr; |
171 |
esd->live = live - decr; |
172 |
hw->rpos = esd->rpos; |
173 |
if (esd->live > 0) { |
174 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
175 |
} |
176 |
else {
|
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audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
178 |
} |
179 |
return decr;
|
180 |
} |
181 |
|
182 |
static int qesd_write (SWVoiceOut *sw, void *buf, int len) |
183 |
{ |
184 |
return audio_pcm_sw_write (sw, buf, len);
|
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} |
186 |
|
187 |
static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as) |
188 |
{ |
189 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
190 |
struct audsettings obt_as = *as;
|
191 |
int esdfmt = ESD_STREAM | ESD_PLAY;
|
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|
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esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
194 |
switch (as->fmt) {
|
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case AUD_FMT_S8:
|
196 |
case AUD_FMT_U8:
|
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esdfmt |= ESD_BITS8; |
198 |
obt_as.fmt = AUD_FMT_U8; |
199 |
break;
|
200 |
|
201 |
case AUD_FMT_S32:
|
202 |
case AUD_FMT_U32:
|
203 |
dolog ("Will use 16 instead of 32 bit samples\n");
|
204 |
|
205 |
case AUD_FMT_S16:
|
206 |
case AUD_FMT_U16:
|
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deffmt:
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esdfmt |= ESD_BITS16; |
209 |
obt_as.fmt = AUD_FMT_S16; |
210 |
break;
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211 |
|
212 |
default:
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213 |
dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
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goto deffmt;
|
215 |
|
216 |
} |
217 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
218 |
|
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audio_pcm_init_info (&hw->info, &obt_as); |
220 |
|
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hw->samples = conf.samples; |
222 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
223 |
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); |
226 |
return -1; |
227 |
} |
228 |
|
229 |
esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
|
230 |
if (esd->fd < 0) { |
231 |
qesd_logerr (errno, "esd_play_stream failed\n");
|
232 |
goto fail1;
|
233 |
} |
234 |
|
235 |
if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
236 |
goto fail2;
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} |
238 |
|
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return 0; |
240 |
|
241 |
fail2:
|
242 |
if (close (esd->fd)) {
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243 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
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AUDIO_FUNC, esd->fd); |
245 |
} |
246 |
esd->fd = -1;
|
247 |
|
248 |
fail1:
|
249 |
g_free (esd->pcm_buf); |
250 |
esd->pcm_buf = NULL;
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return -1; |
252 |
} |
253 |
|
254 |
static void qesd_fini_out (HWVoiceOut *hw) |
255 |
{ |
256 |
void *ret;
|
257 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
258 |
|
259 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
260 |
esd->done = 1;
|
261 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
262 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
263 |
|
264 |
if (esd->fd >= 0) { |
265 |
if (close (esd->fd)) {
|
266 |
qesd_logerr (errno, "failed to close esd socket\n");
|
267 |
} |
268 |
esd->fd = -1;
|
269 |
} |
270 |
|
271 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
272 |
|
273 |
g_free (esd->pcm_buf); |
274 |
esd->pcm_buf = NULL;
|
275 |
} |
276 |
|
277 |
static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...) |
278 |
{ |
279 |
(void) hw;
|
280 |
(void) cmd;
|
281 |
return 0; |
282 |
} |
283 |
|
284 |
/* capture */
|
285 |
static void *qesd_thread_in (void *arg) |
286 |
{ |
287 |
ESDVoiceIn *esd = arg; |
288 |
HWVoiceIn *hw = &esd->hw; |
289 |
int threshold;
|
290 |
|
291 |
threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
292 |
|
293 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
294 |
return NULL; |
295 |
} |
296 |
|
297 |
for (;;) {
|
298 |
int incr, to_grab, wpos;
|
299 |
|
300 |
for (;;) {
|
301 |
if (esd->done) {
|
302 |
goto exit;
|
303 |
} |
304 |
|
305 |
if (esd->dead > threshold) {
|
306 |
break;
|
307 |
} |
308 |
|
309 |
if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
310 |
goto exit;
|
311 |
} |
312 |
} |
313 |
|
314 |
incr = to_grab = esd->dead; |
315 |
wpos = hw->wpos; |
316 |
|
317 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
318 |
return NULL; |
319 |
} |
320 |
|
321 |
while (to_grab) {
|
322 |
ssize_t nread; |
323 |
int chunk = audio_MIN (to_grab, hw->samples - wpos);
|
324 |
void *buf = advance (esd->pcm_buf, wpos);
|
325 |
|
326 |
again:
|
327 |
nread = read (esd->fd, buf, chunk << hw->info.shift); |
328 |
if (nread == -1) { |
329 |
if (errno == EINTR || errno == EAGAIN) {
|
330 |
goto again;
|
331 |
} |
332 |
qesd_logerr (errno, "read failed\n");
|
333 |
return NULL; |
334 |
} |
335 |
|
336 |
if (nread != chunk << hw->info.shift) {
|
337 |
int rsamples = nread >> hw->info.shift;
|
338 |
int rbytes = rsamples << hw->info.shift;
|
339 |
if (rbytes != nread) {
|
340 |
dolog ("warning: Misaligned write %d (requested %zd), "
|
341 |
"alignment %d\n",
|
342 |
rbytes, nread, hw->info.align + 1);
|
343 |
} |
344 |
to_grab -= rsamples; |
345 |
wpos = (wpos + rsamples) % hw->samples; |
346 |
break;
|
347 |
} |
348 |
|
349 |
hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift); |
350 |
wpos = (wpos + chunk) % hw->samples; |
351 |
to_grab -= chunk; |
352 |
} |
353 |
|
354 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
355 |
return NULL; |
356 |
} |
357 |
|
358 |
esd->wpos = wpos; |
359 |
esd->dead -= incr; |
360 |
esd->incr += incr; |
361 |
} |
362 |
|
363 |
exit:
|
364 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
365 |
return NULL; |
366 |
} |
367 |
|
368 |
static int qesd_run_in (HWVoiceIn *hw) |
369 |
{ |
370 |
int live, incr, dead;
|
371 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
372 |
|
373 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
374 |
return 0; |
375 |
} |
376 |
|
377 |
live = audio_pcm_hw_get_live_in (hw); |
378 |
dead = hw->samples - live; |
379 |
incr = audio_MIN (dead, esd->incr); |
380 |
esd->incr -= incr; |
381 |
esd->dead = dead - incr; |
382 |
hw->wpos = esd->wpos; |
383 |
if (esd->dead > 0) { |
384 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
385 |
} |
386 |
else {
|
387 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
388 |
} |
389 |
return incr;
|
390 |
} |
391 |
|
392 |
static int qesd_read (SWVoiceIn *sw, void *buf, int len) |
393 |
{ |
394 |
return audio_pcm_sw_read (sw, buf, len);
|
395 |
} |
396 |
|
397 |
static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as) |
398 |
{ |
399 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
400 |
struct audsettings obt_as = *as;
|
401 |
int esdfmt = ESD_STREAM | ESD_RECORD;
|
402 |
|
403 |
esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
404 |
switch (as->fmt) {
|
405 |
case AUD_FMT_S8:
|
406 |
case AUD_FMT_U8:
|
407 |
esdfmt |= ESD_BITS8; |
408 |
obt_as.fmt = AUD_FMT_U8; |
409 |
break;
|
410 |
|
411 |
case AUD_FMT_S16:
|
412 |
case AUD_FMT_U16:
|
413 |
esdfmt |= ESD_BITS16; |
414 |
obt_as.fmt = AUD_FMT_S16; |
415 |
break;
|
416 |
|
417 |
case AUD_FMT_S32:
|
418 |
case AUD_FMT_U32:
|
419 |
dolog ("Will use 16 instead of 32 bit samples\n");
|
420 |
esdfmt |= ESD_BITS16; |
421 |
obt_as.fmt = AUD_FMT_S16; |
422 |
break;
|
423 |
} |
424 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
425 |
|
426 |
audio_pcm_init_info (&hw->info, &obt_as); |
427 |
|
428 |
hw->samples = conf.samples; |
429 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
430 |
if (!esd->pcm_buf) {
|
431 |
dolog ("Could not allocate buffer (%d bytes)\n",
|
432 |
hw->samples << hw->info.shift); |
433 |
return -1; |
434 |
} |
435 |
|
436 |
esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
|
437 |
if (esd->fd < 0) { |
438 |
qesd_logerr (errno, "esd_record_stream failed\n");
|
439 |
goto fail1;
|
440 |
} |
441 |
|
442 |
if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
443 |
goto fail2;
|
444 |
} |
445 |
|
446 |
return 0; |
447 |
|
448 |
fail2:
|
449 |
if (close (esd->fd)) {
|
450 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
451 |
AUDIO_FUNC, esd->fd); |
452 |
} |
453 |
esd->fd = -1;
|
454 |
|
455 |
fail1:
|
456 |
g_free (esd->pcm_buf); |
457 |
esd->pcm_buf = NULL;
|
458 |
return -1; |
459 |
} |
460 |
|
461 |
static void qesd_fini_in (HWVoiceIn *hw) |
462 |
{ |
463 |
void *ret;
|
464 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
465 |
|
466 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
467 |
esd->done = 1;
|
468 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
469 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
470 |
|
471 |
if (esd->fd >= 0) { |
472 |
if (close (esd->fd)) {
|
473 |
qesd_logerr (errno, "failed to close esd socket\n");
|
474 |
} |
475 |
esd->fd = -1;
|
476 |
} |
477 |
|
478 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
479 |
|
480 |
g_free (esd->pcm_buf); |
481 |
esd->pcm_buf = NULL;
|
482 |
} |
483 |
|
484 |
static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...) |
485 |
{ |
486 |
(void) hw;
|
487 |
(void) cmd;
|
488 |
return 0; |
489 |
} |
490 |
|
491 |
/* common */
|
492 |
static void *qesd_audio_init (void) |
493 |
{ |
494 |
return &conf;
|
495 |
} |
496 |
|
497 |
static void qesd_audio_fini (void *opaque) |
498 |
{ |
499 |
(void) opaque;
|
500 |
ldebug ("esd_fini");
|
501 |
} |
502 |
|
503 |
struct audio_option qesd_options[] = {
|
504 |
{ |
505 |
.name = "SAMPLES",
|
506 |
.tag = AUD_OPT_INT, |
507 |
.valp = &conf.samples, |
508 |
.descr = "buffer size in samples"
|
509 |
}, |
510 |
{ |
511 |
.name = "DIVISOR",
|
512 |
.tag = AUD_OPT_INT, |
513 |
.valp = &conf.divisor, |
514 |
.descr = "threshold divisor"
|
515 |
}, |
516 |
{ |
517 |
.name = "DAC_HOST",
|
518 |
.tag = AUD_OPT_STR, |
519 |
.valp = &conf.dac_host, |
520 |
.descr = "playback host"
|
521 |
}, |
522 |
{ |
523 |
.name = "ADC_HOST",
|
524 |
.tag = AUD_OPT_STR, |
525 |
.valp = &conf.adc_host, |
526 |
.descr = "capture host"
|
527 |
}, |
528 |
{ /* End of list */ }
|
529 |
}; |
530 |
|
531 |
static struct audio_pcm_ops qesd_pcm_ops = { |
532 |
.init_out = qesd_init_out, |
533 |
.fini_out = qesd_fini_out, |
534 |
.run_out = qesd_run_out, |
535 |
.write = qesd_write, |
536 |
.ctl_out = qesd_ctl_out, |
537 |
|
538 |
.init_in = qesd_init_in, |
539 |
.fini_in = qesd_fini_in, |
540 |
.run_in = qesd_run_in, |
541 |
.read = qesd_read, |
542 |
.ctl_in = qesd_ctl_in, |
543 |
}; |
544 |
|
545 |
struct audio_driver esd_audio_driver = {
|
546 |
.name = "esd",
|
547 |
.descr = "http://en.wikipedia.org/wiki/Esound",
|
548 |
.options = qesd_options, |
549 |
.init = qesd_audio_init, |
550 |
.fini = qesd_audio_fini, |
551 |
.pcm_ops = &qesd_pcm_ops, |
552 |
.can_be_default = 0,
|
553 |
.max_voices_out = INT_MAX, |
554 |
.max_voices_in = INT_MAX, |
555 |
.voice_size_out = sizeof (ESDVoiceOut),
|
556 |
.voice_size_in = sizeof (ESDVoiceIn)
|
557 |
}; |