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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> |
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|
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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 { |
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HWVoiceOut hw; |
35 |
int done;
|
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int live;
|
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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 |
|
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static struct { |
56 |
int samples;
|
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int divisor;
|
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char *dac_host;
|
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char *adc_host;
|
60 |
} conf = { |
61 |
1024,
|
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2,
|
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NULL,
|
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NULL
|
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}; |
66 |
|
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static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...) |
68 |
{ |
69 |
va_list ap; |
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|
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va_start (ap, fmt); |
72 |
AUD_vlog (AUDIO_CAP, fmt, ap); |
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va_end (ap); |
74 |
|
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AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
|
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} |
77 |
|
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/* playback */
|
79 |
static void *qesd_thread_out (void *arg) |
80 |
{ |
81 |
ESDVoiceOut *esd = arg; |
82 |
HWVoiceOut *hw = &esd->hw; |
83 |
int threshold;
|
84 |
|
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threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
86 |
|
87 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
89 |
} |
90 |
|
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for (;;) {
|
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int decr, to_mix, rpos;
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|
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for (;;) {
|
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if (esd->done) {
|
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goto exit;
|
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} |
98 |
|
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if (esd->live > threshold) {
|
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break;
|
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} |
102 |
|
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if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
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goto exit;
|
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} |
106 |
} |
107 |
|
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decr = to_mix = esd->live; |
109 |
rpos = hw->rpos; |
110 |
|
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if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
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return NULL; |
113 |
} |
114 |
|
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while (to_mix) {
|
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ssize_t written; |
117 |
int chunk = audio_MIN (to_mix, hw->samples - rpos);
|
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st_sample_t *src = hw->mix_buf + rpos; |
119 |
|
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hw->clip (esd->pcm_buf, src, chunk); |
121 |
|
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again:
|
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written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift); |
124 |
if (written == -1) { |
125 |
if (errno == EINTR || errno == EAGAIN) {
|
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goto again;
|
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} |
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qesd_logerr (errno, "write failed\n");
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return NULL; |
130 |
} |
131 |
|
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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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} |
140 |
to_mix -= wsamples; |
141 |
rpos = (rpos + wsamples) % hw->samples; |
142 |
break;
|
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} |
144 |
|
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rpos = (rpos + chunk) % hw->samples; |
146 |
to_mix -= chunk; |
147 |
} |
148 |
|
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if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return NULL; |
151 |
} |
152 |
|
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esd->rpos = rpos; |
154 |
esd->live -= decr; |
155 |
esd->decr += decr; |
156 |
} |
157 |
|
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exit:
|
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audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
160 |
return NULL; |
161 |
} |
162 |
|
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static int qesd_run_out (HWVoiceOut *hw) |
164 |
{ |
165 |
int live, decr;
|
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ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
167 |
|
168 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
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return 0; |
170 |
} |
171 |
|
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live = audio_pcm_hw_get_live_out (hw); |
173 |
decr = audio_MIN (live, esd->decr); |
174 |
esd->decr -= decr; |
175 |
esd->live = live - decr; |
176 |
hw->rpos = esd->rpos; |
177 |
if (esd->live > 0) { |
178 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
179 |
} |
180 |
else {
|
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audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
182 |
} |
183 |
return decr;
|
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} |
185 |
|
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static int qesd_write (SWVoiceOut *sw, void *buf, int len) |
187 |
{ |
188 |
return audio_pcm_sw_write (sw, buf, len);
|
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} |
190 |
|
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static int qesd_init_out (HWVoiceOut *hw, audsettings_t *as) |
192 |
{ |
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ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
194 |
audsettings_t obt_as = *as; |
195 |
int esdfmt = ESD_STREAM | ESD_PLAY;
|
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int err;
|
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sigset_t set, old_set; |
198 |
|
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sigfillset (&set); |
200 |
|
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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:
|
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case AUD_FMT_U8:
|
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esdfmt |= ESD_BITS8; |
206 |
obt_as.fmt = AUD_FMT_U8; |
207 |
break;
|
208 |
|
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case AUD_FMT_S32:
|
210 |
case AUD_FMT_U32:
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dolog ("Will use 16 instead of 32 bit samples\n");
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212 |
|
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case AUD_FMT_S16:
|
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case AUD_FMT_U16:
|
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deffmt:
|
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esdfmt |= ESD_BITS16; |
217 |
obt_as.fmt = AUD_FMT_S16; |
218 |
break;
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219 |
|
220 |
default:
|
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dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
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goto deffmt;
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|
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} |
225 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
226 |
|
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audio_pcm_init_info (&hw->info, &obt_as); |
228 |
|
229 |
hw->samples = conf.samples; |
230 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
231 |
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); |
234 |
return -1; |
235 |
} |
236 |
|
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esd->fd = -1;
|
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err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
239 |
if (err) {
|
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qesd_logerr (err, "pthread_sigmask failed\n");
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goto fail1;
|
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} |
243 |
|
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esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
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if (esd->fd < 0) { |
246 |
qesd_logerr (errno, "esd_play_stream failed\n");
|
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goto fail2;
|
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} |
249 |
|
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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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} |
253 |
|
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err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
255 |
if (err) {
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qesd_logerr (err, "pthread_sigmask(restore) failed\n");
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} |
258 |
|
259 |
return 0; |
260 |
|
261 |
fail3:
|
262 |
if (close (esd->fd)) {
|
263 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
264 |
AUDIO_FUNC, esd->fd); |
265 |
} |
266 |
esd->fd = -1;
|
267 |
|
268 |
fail2:
|
269 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
270 |
if (err) {
|
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qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
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} |
273 |
|
274 |
fail1:
|
275 |
qemu_free (esd->pcm_buf); |
276 |
esd->pcm_buf = NULL;
|
277 |
return -1; |
278 |
} |
279 |
|
280 |
static void qesd_fini_out (HWVoiceOut *hw) |
281 |
{ |
282 |
void *ret;
|
283 |
ESDVoiceOut *esd = (ESDVoiceOut *) hw; |
284 |
|
285 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
286 |
esd->done = 1;
|
287 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
288 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
289 |
|
290 |
if (esd->fd >= 0) { |
291 |
if (close (esd->fd)) {
|
292 |
qesd_logerr (errno, "failed to close esd socket\n");
|
293 |
} |
294 |
esd->fd = -1;
|
295 |
} |
296 |
|
297 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
298 |
|
299 |
qemu_free (esd->pcm_buf); |
300 |
esd->pcm_buf = NULL;
|
301 |
} |
302 |
|
303 |
static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...) |
304 |
{ |
305 |
(void) hw;
|
306 |
(void) cmd;
|
307 |
return 0; |
308 |
} |
309 |
|
310 |
/* capture */
|
311 |
static void *qesd_thread_in (void *arg) |
312 |
{ |
313 |
ESDVoiceIn *esd = arg; |
314 |
HWVoiceIn *hw = &esd->hw; |
315 |
int threshold;
|
316 |
|
317 |
threshold = conf.divisor ? hw->samples / conf.divisor : 0;
|
318 |
|
319 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
320 |
return NULL; |
321 |
} |
322 |
|
323 |
for (;;) {
|
324 |
int incr, to_grab, wpos;
|
325 |
|
326 |
for (;;) {
|
327 |
if (esd->done) {
|
328 |
goto exit;
|
329 |
} |
330 |
|
331 |
if (esd->dead > threshold) {
|
332 |
break;
|
333 |
} |
334 |
|
335 |
if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
|
336 |
goto exit;
|
337 |
} |
338 |
} |
339 |
|
340 |
incr = to_grab = esd->dead; |
341 |
wpos = hw->wpos; |
342 |
|
343 |
if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
|
344 |
return NULL; |
345 |
} |
346 |
|
347 |
while (to_grab) {
|
348 |
ssize_t nread; |
349 |
int chunk = audio_MIN (to_grab, hw->samples - wpos);
|
350 |
void *buf = advance (esd->pcm_buf, wpos);
|
351 |
|
352 |
again:
|
353 |
nread = read (esd->fd, buf, chunk << hw->info.shift); |
354 |
if (nread == -1) { |
355 |
if (errno == EINTR || errno == EAGAIN) {
|
356 |
goto again;
|
357 |
} |
358 |
qesd_logerr (errno, "read failed\n");
|
359 |
return NULL; |
360 |
} |
361 |
|
362 |
if (nread != chunk << hw->info.shift) {
|
363 |
int rsamples = nread >> hw->info.shift;
|
364 |
int rbytes = rsamples << hw->info.shift;
|
365 |
if (rbytes != nread) {
|
366 |
dolog ("warning: Misaligned write %d (requested %d), "
|
367 |
"alignment %d\n",
|
368 |
rbytes, nread, hw->info.align + 1);
|
369 |
} |
370 |
to_grab -= rsamples; |
371 |
wpos = (wpos + rsamples) % hw->samples; |
372 |
break;
|
373 |
} |
374 |
|
375 |
hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift, |
376 |
&nominal_volume); |
377 |
wpos = (wpos + chunk) % hw->samples; |
378 |
to_grab -= chunk; |
379 |
} |
380 |
|
381 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
382 |
return NULL; |
383 |
} |
384 |
|
385 |
esd->wpos = wpos; |
386 |
esd->dead -= incr; |
387 |
esd->incr += incr; |
388 |
} |
389 |
|
390 |
exit:
|
391 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
392 |
return NULL; |
393 |
} |
394 |
|
395 |
static int qesd_run_in (HWVoiceIn *hw) |
396 |
{ |
397 |
int live, incr, dead;
|
398 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
399 |
|
400 |
if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
|
401 |
return 0; |
402 |
} |
403 |
|
404 |
live = audio_pcm_hw_get_live_in (hw); |
405 |
dead = hw->samples - live; |
406 |
incr = audio_MIN (dead, esd->incr); |
407 |
esd->incr -= incr; |
408 |
esd->dead = dead - incr; |
409 |
hw->wpos = esd->wpos; |
410 |
if (esd->dead > 0) { |
411 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
412 |
} |
413 |
else {
|
414 |
audio_pt_unlock (&esd->pt, AUDIO_FUNC); |
415 |
} |
416 |
return incr;
|
417 |
} |
418 |
|
419 |
static int qesd_read (SWVoiceIn *sw, void *buf, int len) |
420 |
{ |
421 |
return audio_pcm_sw_read (sw, buf, len);
|
422 |
} |
423 |
|
424 |
static int qesd_init_in (HWVoiceIn *hw, audsettings_t *as) |
425 |
{ |
426 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
427 |
audsettings_t obt_as = *as; |
428 |
int esdfmt = ESD_STREAM | ESD_RECORD;
|
429 |
int err;
|
430 |
sigset_t set, old_set; |
431 |
|
432 |
sigfillset (&set); |
433 |
|
434 |
esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
|
435 |
switch (as->fmt) {
|
436 |
case AUD_FMT_S8:
|
437 |
case AUD_FMT_U8:
|
438 |
esdfmt |= ESD_BITS8; |
439 |
obt_as.fmt = AUD_FMT_U8; |
440 |
break;
|
441 |
|
442 |
case AUD_FMT_S16:
|
443 |
case AUD_FMT_U16:
|
444 |
esdfmt |= ESD_BITS16; |
445 |
obt_as.fmt = AUD_FMT_S16; |
446 |
break;
|
447 |
|
448 |
case AUD_FMT_S32:
|
449 |
case AUD_FMT_U32:
|
450 |
dolog ("Will use 16 instead of 32 bit samples\n");
|
451 |
esdfmt |= ESD_BITS16; |
452 |
obt_as.fmt = AUD_FMT_S16; |
453 |
break;
|
454 |
} |
455 |
obt_as.endianness = AUDIO_HOST_ENDIANNESS; |
456 |
|
457 |
audio_pcm_init_info (&hw->info, &obt_as); |
458 |
|
459 |
hw->samples = conf.samples; |
460 |
esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
461 |
if (!esd->pcm_buf) {
|
462 |
dolog ("Could not allocate buffer (%d bytes)\n",
|
463 |
hw->samples << hw->info.shift); |
464 |
return -1; |
465 |
} |
466 |
|
467 |
esd->fd = -1;
|
468 |
|
469 |
err = pthread_sigmask (SIG_BLOCK, &set, &old_set); |
470 |
if (err) {
|
471 |
qesd_logerr (err, "pthread_sigmask failed\n");
|
472 |
goto fail1;
|
473 |
} |
474 |
|
475 |
esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
|
476 |
if (esd->fd < 0) { |
477 |
qesd_logerr (errno, "esd_record_stream failed\n");
|
478 |
goto fail2;
|
479 |
} |
480 |
|
481 |
if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
|
482 |
goto fail3;
|
483 |
} |
484 |
|
485 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
486 |
if (err) {
|
487 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
488 |
} |
489 |
|
490 |
return 0; |
491 |
|
492 |
fail3:
|
493 |
if (close (esd->fd)) {
|
494 |
qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
|
495 |
AUDIO_FUNC, esd->fd); |
496 |
} |
497 |
esd->fd = -1;
|
498 |
|
499 |
fail2:
|
500 |
err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
|
501 |
if (err) {
|
502 |
qesd_logerr (err, "pthread_sigmask(restore) failed\n");
|
503 |
} |
504 |
|
505 |
fail1:
|
506 |
qemu_free (esd->pcm_buf); |
507 |
esd->pcm_buf = NULL;
|
508 |
return -1; |
509 |
} |
510 |
|
511 |
static void qesd_fini_in (HWVoiceIn *hw) |
512 |
{ |
513 |
void *ret;
|
514 |
ESDVoiceIn *esd = (ESDVoiceIn *) hw; |
515 |
|
516 |
audio_pt_lock (&esd->pt, AUDIO_FUNC); |
517 |
esd->done = 1;
|
518 |
audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC); |
519 |
audio_pt_join (&esd->pt, &ret, AUDIO_FUNC); |
520 |
|
521 |
if (esd->fd >= 0) { |
522 |
if (close (esd->fd)) {
|
523 |
qesd_logerr (errno, "failed to close esd socket\n");
|
524 |
} |
525 |
esd->fd = -1;
|
526 |
} |
527 |
|
528 |
audio_pt_fini (&esd->pt, AUDIO_FUNC); |
529 |
|
530 |
qemu_free (esd->pcm_buf); |
531 |
esd->pcm_buf = NULL;
|
532 |
} |
533 |
|
534 |
static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...) |
535 |
{ |
536 |
(void) hw;
|
537 |
(void) cmd;
|
538 |
return 0; |
539 |
} |
540 |
|
541 |
/* common */
|
542 |
static void *qesd_audio_init (void) |
543 |
{ |
544 |
return &conf;
|
545 |
} |
546 |
|
547 |
static void qesd_audio_fini (void *opaque) |
548 |
{ |
549 |
(void) opaque;
|
550 |
ldebug ("esd_fini");
|
551 |
} |
552 |
|
553 |
struct audio_option qesd_options[] = {
|
554 |
{"SAMPLES", AUD_OPT_INT, &conf.samples,
|
555 |
"buffer size in samples", NULL, 0}, |
556 |
|
557 |
{"DIVISOR", AUD_OPT_INT, &conf.divisor,
|
558 |
"threshold divisor", NULL, 0}, |
559 |
|
560 |
{"DAC_HOST", AUD_OPT_STR, &conf.dac_host,
|
561 |
"playback host", NULL, 0}, |
562 |
|
563 |
{"ADC_HOST", AUD_OPT_STR, &conf.adc_host,
|
564 |
"capture host", NULL, 0}, |
565 |
|
566 |
{NULL, 0, NULL, NULL, NULL, 0} |
567 |
}; |
568 |
|
569 |
struct audio_pcm_ops qesd_pcm_ops = {
|
570 |
qesd_init_out, |
571 |
qesd_fini_out, |
572 |
qesd_run_out, |
573 |
qesd_write, |
574 |
qesd_ctl_out, |
575 |
|
576 |
qesd_init_in, |
577 |
qesd_fini_in, |
578 |
qesd_run_in, |
579 |
qesd_read, |
580 |
qesd_ctl_in, |
581 |
}; |
582 |
|
583 |
struct audio_driver esd_audio_driver = {
|
584 |
INIT_FIELD (name = ) "esd",
|
585 |
INIT_FIELD (descr = ) |
586 |
"http://en.wikipedia.org/wiki/Esound",
|
587 |
INIT_FIELD (options = ) qesd_options, |
588 |
INIT_FIELD (init = ) qesd_audio_init, |
589 |
INIT_FIELD (fini = ) qesd_audio_fini, |
590 |
INIT_FIELD (pcm_ops = ) &qesd_pcm_ops, |
591 |
INIT_FIELD (can_be_default = ) 0,
|
592 |
INIT_FIELD (max_voices_out = ) INT_MAX, |
593 |
INIT_FIELD (max_voices_in = ) INT_MAX, |
594 |
INIT_FIELD (voice_size_out = ) sizeof (ESDVoiceOut),
|
595 |
INIT_FIELD (voice_size_in = ) sizeof (ESDVoiceIn)
|
596 |
}; |