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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 |
|
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#define AUDIO_CAP "esd" |
30 |
#include "audio_int.h" |
31 |
#include "audio_pt_int.h" |
32 |
|
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typedef struct { |
34 |
HWVoiceOut hw; |
35 |
int done;
|
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int live;
|
37 |
int decr;
|
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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;
|
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int wpos;
|
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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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} ESDVoiceIn; |
54 |
|
55 |
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 |
{ |
67 |
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 (;;) {
|
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int decr, to_mix, rpos;
|
91 |
|
92 |
for (;;) {
|
93 |
if (esd->done) {
|
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goto exit;
|
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} |
96 |
|
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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;
|
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} |
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 %zd), "
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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;
|
141 |
} |
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, int live) |
162 |
{ |
163 |
int 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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decr = audio_MIN (live, esd->decr); |
171 |
esd->decr -= decr; |
172 |
esd->live = live - decr; |
173 |
hw->rpos = esd->rpos; |
174 |
if (esd->live > 0) { |
175 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
176 |
} |
177 |
else {
|
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audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
179 |
} |
180 |
return decr;
|
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} |
182 |
|
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static int qesd_write (SWVoiceOut *sw, void *buf, int len) |
184 |
{ |
185 |
return audio_pcm_sw_write (sw, buf, len);
|
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} |
187 |
|
188 |
static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as) |
189 |
{ |
190 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
191 |
struct audsettings obt_as = *as;
|
192 |
int esdfmt = ESD_STREAM | ESD_PLAY;
|
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int err;
|
194 |
sigset_t set, old_set; |
195 |
|
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sigfillset (&set); |
197 |
|
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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:
|
201 |
case AUD_FMT_U8:
|
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esdfmt |= ESD_BITS8; |
203 |
obt_as.fmt = AUD_FMT_U8; |
204 |
break;
|
205 |
|
206 |
case AUD_FMT_S32:
|
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case AUD_FMT_U32:
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dolog ("Will use 16 instead of 32 bit samples\n");
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209 |
|
210 |
case AUD_FMT_S16:
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case AUD_FMT_U16:
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deffmt:
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esdfmt |= ESD_BITS16; |
214 |
obt_as.fmt = AUD_FMT_S16; |
215 |
break;
|
216 |
|
217 |
default:
|
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dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
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goto deffmt;
|
220 |
|
221 |
} |
222 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
223 |
|
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audio_pcm_init_info (&hw->info, &obt_as); |
225 |
|
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hw->samples = conf.samples; |
227 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
228 |
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); |
231 |
return -1; |
232 |
} |
233 |
|
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esd->fd = -1;
|
235 |
err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
236 |
if (err) {
|
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qesd_logerr (err, "pthread_sigmask failed\n");
|
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goto fail1;
|
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} |
240 |
|
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esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
|
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if (esd->fd < 0) { |
243 |
qesd_logerr (errno, "esd_play_stream failed\n");
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goto fail2;
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} |
246 |
|
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if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
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goto fail3;
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} |
250 |
|
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err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
252 |
if (err) {
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qesd_logerr (err, "pthread_sigmask(restore) failed\n");
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} |
255 |
|
256 |
return 0; |
257 |
|
258 |
fail3:
|
259 |
if (close (esd->fd)) {
|
260 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
261 |
AUDIO_FUNC, esd->fd); |
262 |
} |
263 |
esd->fd = -1;
|
264 |
|
265 |
fail2:
|
266 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
267 |
if (err) {
|
268 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
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} |
270 |
|
271 |
fail1:
|
272 |
qemu_free (esd->pcm_buf); |
273 |
esd->pcm_buf = NULL;
|
274 |
return -1; |
275 |
} |
276 |
|
277 |
static void qesd_fini_out (HWVoiceOut *hw) |
278 |
{ |
279 |
void *ret;
|
280 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
281 |
|
282 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
283 |
esd->done = 1;
|
284 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
285 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
286 |
|
287 |
if (esd->fd >= 0) { |
288 |
if (close (esd->fd)) {
|
289 |
qesd_logerr (errno, "failed to close esd socket\n");
|
290 |
} |
291 |
esd->fd = -1;
|
292 |
} |
293 |
|
294 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
295 |
|
296 |
qemu_free (esd->pcm_buf); |
297 |
esd->pcm_buf = NULL;
|
298 |
} |
299 |
|
300 |
static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...) |
301 |
{ |
302 |
(void) hw;
|
303 |
(void) cmd;
|
304 |
return 0; |
305 |
} |
306 |
|
307 |
/* capture */
|
308 |
static void *qesd_thread_in (void *arg) |
309 |
{ |
310 |
ESDVoiceIn *esd = arg; |
311 |
HWVoiceIn *hw = &esd->hw; |
312 |
int threshold;
|
313 |
|
314 |
threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
315 |
|
316 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
317 |
return NULL; |
318 |
} |
319 |
|
320 |
for (;;) {
|
321 |
int incr, to_grab, wpos;
|
322 |
|
323 |
for (;;) {
|
324 |
if (esd->done) {
|
325 |
goto exit;
|
326 |
} |
327 |
|
328 |
if (esd->dead > threshold) {
|
329 |
break;
|
330 |
} |
331 |
|
332 |
if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
333 |
goto exit;
|
334 |
} |
335 |
} |
336 |
|
337 |
incr = to_grab = esd->dead; |
338 |
wpos = hw->wpos; |
339 |
|
340 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
341 |
return NULL; |
342 |
} |
343 |
|
344 |
while (to_grab) {
|
345 |
ssize_t nread; |
346 |
int chunk = audio_MIN (to_grab, hw->samples - wpos);
|
347 |
void *buf = advance (esd->pcm_buf, wpos);
|
348 |
|
349 |
again:
|
350 |
nread = read (esd->fd, buf, chunk << hw->info.shift); |
351 |
if (nread == -1) { |
352 |
if (errno == EINTR || errno == EAGAIN) {
|
353 |
goto again;
|
354 |
} |
355 |
qesd_logerr (errno, "read failed\n");
|
356 |
return NULL; |
357 |
} |
358 |
|
359 |
if (nread != chunk << hw->info.shift) {
|
360 |
int rsamples = nread >> hw->info.shift;
|
361 |
int rbytes = rsamples << hw->info.shift;
|
362 |
if (rbytes != nread) {
|
363 |
dolog ("warning: Misaligned write %d (requested %zd), "
|
364 |
"alignment %d\n",
|
365 |
rbytes, nread, hw->info.align + 1);
|
366 |
} |
367 |
to_grab -= rsamples; |
368 |
wpos = (wpos + rsamples) % hw->samples; |
369 |
break;
|
370 |
} |
371 |
|
372 |
hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift, |
373 |
&nominal_volume); |
374 |
wpos = (wpos + chunk) % hw->samples; |
375 |
to_grab -= chunk; |
376 |
} |
377 |
|
378 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
379 |
return NULL; |
380 |
} |
381 |
|
382 |
esd->wpos = wpos; |
383 |
esd->dead -= incr; |
384 |
esd->incr += incr; |
385 |
} |
386 |
|
387 |
exit:
|
388 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
389 |
return NULL; |
390 |
} |
391 |
|
392 |
static int qesd_run_in (HWVoiceIn *hw) |
393 |
{ |
394 |
int live, incr, dead;
|
395 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
396 |
|
397 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
398 |
return 0; |
399 |
} |
400 |
|
401 |
live = audio_pcm_hw_get_live_in (hw); |
402 |
dead = hw->samples - live; |
403 |
incr = audio_MIN (dead, esd->incr); |
404 |
esd->incr -= incr; |
405 |
esd->dead = dead - incr; |
406 |
hw->wpos = esd->wpos; |
407 |
if (esd->dead > 0) { |
408 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
409 |
} |
410 |
else {
|
411 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
412 |
} |
413 |
return incr;
|
414 |
} |
415 |
|
416 |
static int qesd_read (SWVoiceIn *sw, void *buf, int len) |
417 |
{ |
418 |
return audio_pcm_sw_read (sw, buf, len);
|
419 |
} |
420 |
|
421 |
static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as) |
422 |
{ |
423 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
424 |
struct audsettings obt_as = *as;
|
425 |
int esdfmt = ESD_STREAM | ESD_RECORD;
|
426 |
int err;
|
427 |
sigset_t set, old_set; |
428 |
|
429 |
sigfillset (&set); |
430 |
|
431 |
esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
432 |
switch (as->fmt) {
|
433 |
case AUD_FMT_S8:
|
434 |
case AUD_FMT_U8:
|
435 |
esdfmt |= ESD_BITS8; |
436 |
obt_as.fmt = AUD_FMT_U8; |
437 |
break;
|
438 |
|
439 |
case AUD_FMT_S16:
|
440 |
case AUD_FMT_U16:
|
441 |
esdfmt |= ESD_BITS16; |
442 |
obt_as.fmt = AUD_FMT_S16; |
443 |
break;
|
444 |
|
445 |
case AUD_FMT_S32:
|
446 |
case AUD_FMT_U32:
|
447 |
dolog ("Will use 16 instead of 32 bit samples\n");
|
448 |
esdfmt |= ESD_BITS16; |
449 |
obt_as.fmt = AUD_FMT_S16; |
450 |
break;
|
451 |
} |
452 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
453 |
|
454 |
audio_pcm_init_info (&hw->info, &obt_as); |
455 |
|
456 |
hw->samples = conf.samples; |
457 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
458 |
if (!esd->pcm_buf) {
|
459 |
dolog ("Could not allocate buffer (%d bytes)\n",
|
460 |
hw->samples << hw->info.shift); |
461 |
return -1; |
462 |
} |
463 |
|
464 |
esd->fd = -1;
|
465 |
|
466 |
err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
467 |
if (err) {
|
468 |
qesd_logerr (err, "pthread_sigmask failed\n");
|
469 |
goto fail1;
|
470 |
} |
471 |
|
472 |
esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
|
473 |
if (esd->fd < 0) { |
474 |
qesd_logerr (errno, "esd_record_stream failed\n");
|
475 |
goto fail2;
|
476 |
} |
477 |
|
478 |
if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
479 |
goto fail3;
|
480 |
} |
481 |
|
482 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
483 |
if (err) {
|
484 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
485 |
} |
486 |
|
487 |
return 0; |
488 |
|
489 |
fail3:
|
490 |
if (close (esd->fd)) {
|
491 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
492 |
AUDIO_FUNC, esd->fd); |
493 |
} |
494 |
esd->fd = -1;
|
495 |
|
496 |
fail2:
|
497 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
498 |
if (err) {
|
499 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
500 |
} |
501 |
|
502 |
fail1:
|
503 |
qemu_free (esd->pcm_buf); |
504 |
esd->pcm_buf = NULL;
|
505 |
return -1; |
506 |
} |
507 |
|
508 |
static void qesd_fini_in (HWVoiceIn *hw) |
509 |
{ |
510 |
void *ret;
|
511 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
512 |
|
513 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
514 |
esd->done = 1;
|
515 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
516 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
517 |
|
518 |
if (esd->fd >= 0) { |
519 |
if (close (esd->fd)) {
|
520 |
qesd_logerr (errno, "failed to close esd socket\n");
|
521 |
} |
522 |
esd->fd = -1;
|
523 |
} |
524 |
|
525 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
526 |
|
527 |
qemu_free (esd->pcm_buf); |
528 |
esd->pcm_buf = NULL;
|
529 |
} |
530 |
|
531 |
static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...) |
532 |
{ |
533 |
(void) hw;
|
534 |
(void) cmd;
|
535 |
return 0; |
536 |
} |
537 |
|
538 |
/* common */
|
539 |
static void *qesd_audio_init (void) |
540 |
{ |
541 |
return &conf;
|
542 |
} |
543 |
|
544 |
static void qesd_audio_fini (void *opaque) |
545 |
{ |
546 |
(void) opaque;
|
547 |
ldebug ("esd_fini");
|
548 |
} |
549 |
|
550 |
struct audio_option qesd_options[] = {
|
551 |
{ |
552 |
.name = "SAMPLES",
|
553 |
.tag = AUD_OPT_INT, |
554 |
.valp = &conf.samples, |
555 |
.descr = "buffer size in samples"
|
556 |
}, |
557 |
{ |
558 |
.name = "DIVISOR",
|
559 |
.tag = AUD_OPT_INT, |
560 |
.valp = &conf.divisor, |
561 |
.descr = "threshold divisor"
|
562 |
}, |
563 |
{ |
564 |
.name = "DAC_HOST",
|
565 |
.tag = AUD_OPT_STR, |
566 |
.valp = &conf.dac_host, |
567 |
.descr = "playback host"
|
568 |
}, |
569 |
{ |
570 |
.name = "ADC_HOST",
|
571 |
.tag = AUD_OPT_STR, |
572 |
.valp = &conf.adc_host, |
573 |
.descr = "capture host"
|
574 |
}, |
575 |
{ /* End of list */ }
|
576 |
}; |
577 |
|
578 |
static struct audio_pcm_ops qesd_pcm_ops = { |
579 |
.init_out = qesd_init_out, |
580 |
.fini_out = qesd_fini_out, |
581 |
.run_out = qesd_run_out, |
582 |
.write = qesd_write, |
583 |
.ctl_out = qesd_ctl_out, |
584 |
|
585 |
.init_in = qesd_init_in, |
586 |
.fini_in = qesd_fini_in, |
587 |
.run_in = qesd_run_in, |
588 |
.read = qesd_read, |
589 |
.ctl_in = qesd_ctl_in, |
590 |
}; |
591 |
|
592 |
struct audio_driver esd_audio_driver = {
|
593 |
.name = "esd",
|
594 |
.descr = "http://en.wikipedia.org/wiki/Esound",
|
595 |
.options = qesd_options, |
596 |
.init = qesd_audio_init, |
597 |
.fini = qesd_audio_fini, |
598 |
.pcm_ops = &qesd_pcm_ops, |
599 |
.can_be_default = 0,
|
600 |
.max_voices_out = INT_MAX, |
601 |
.max_voices_in = INT_MAX, |
602 |
.voice_size_out = sizeof (ESDVoiceOut),
|
603 |
.voice_size_in = sizeof (ESDVoiceIn)
|
604 |
}; |