![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to ossaudio.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / audio|
Return to ossaudio.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / audio |
1.1 root 1: /*
1.1.1.2 root 2: * QEMU OSS audio driver
3: *
4: * Copyright (c) 2003-2005 Vassili Karpov (malc)
5: *
1.1 root 6: * Permission is hereby granted, free of charge, to any person obtaining a copy
7: * of this software and associated documentation files (the "Software"), to deal
8: * in the Software without restriction, including without limitation the rights
9: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10: * copies of the Software, and to permit persons to whom the Software is
11: * furnished to do so, subject to the following conditions:
12: *
13: * The above copyright notice and this permission notice shall be included in
14: * all copies or substantial portions of the Software.
15: *
16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22: * THE SOFTWARE.
23: */
1.1.1.4 root 24: #include <stdlib.h>
1.1 root 25: #include <sys/mman.h>
26: #include <sys/types.h>
27: #include <sys/ioctl.h>
1.1.1.4 root 28: #ifdef __OpenBSD__
29: #include <soundcard.h>
30: #else
1.1 root 31: #include <sys/soundcard.h>
1.1.1.4 root 32: #endif
33: #include "qemu-common.h"
1.1.1.7 root 34: #include "host-utils.h"
35: #include "qemu-char.h"
1.1.1.4 root 36: #include "audio.h"
1.1 root 37:
1.1.1.2 root 38: #define AUDIO_CAP "oss"
39: #include "audio_int.h"
1.1 root 40:
1.1.1.8 ! root 41: #if defined OSS_GETVERSION && defined SNDCTL_DSP_POLICY
! 42: #define USE_DSP_POLICY
! 43: #endif
! 44:
1.1.1.2 root 45: typedef struct OSSVoiceOut {
46: HWVoiceOut hw;
1.1 root 47: void *pcm_buf;
48: int fd;
1.1.1.7 root 49: int wpos;
1.1 root 50: int nfrags;
51: int fragsize;
52: int mmapped;
1.1.1.7 root 53: int pending;
1.1.1.2 root 54: } OSSVoiceOut;
1.1 root 55:
1.1.1.2 root 56: typedef struct OSSVoiceIn {
57: HWVoiceIn hw;
58: void *pcm_buf;
59: int fd;
60: int nfrags;
61: int fragsize;
62: } OSSVoiceIn;
1.1 root 63:
64: static struct {
65: int try_mmap;
66: int nfrags;
67: int fragsize;
1.1.1.2 root 68: const char *devpath_out;
69: const char *devpath_in;
1.1.1.3 root 70: int debug;
1.1.1.7 root 71: int exclusive;
72: int policy;
1.1 root 73: } conf = {
74: .try_mmap = 0,
75: .nfrags = 4,
76: .fragsize = 4096,
1.1.1.2 root 77: .devpath_out = "/dev/dsp",
1.1.1.3 root 78: .devpath_in = "/dev/dsp",
1.1.1.7 root 79: .debug = 0,
80: .exclusive = 0,
81: .policy = 5
1.1 root 82: };
83:
84: struct oss_params {
85: int freq;
86: audfmt_e fmt;
87: int nchannels;
88: int nfrags;
89: int fragsize;
90: };
91:
1.1.1.2 root 92: static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...)
93: {
94: va_list ap;
95:
96: va_start (ap, fmt);
97: AUD_vlog (AUDIO_CAP, fmt, ap);
98: va_end (ap);
99:
100: AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
101: }
102:
103: static void GCC_FMT_ATTR (3, 4) oss_logerr2 (
104: int err,
105: const char *typ,
106: const char *fmt,
107: ...
108: )
109: {
110: va_list ap;
111:
112: AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
113:
114: va_start (ap, fmt);
115: AUD_vlog (AUDIO_CAP, fmt, ap);
116: va_end (ap);
117:
118: AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
119: }
120:
121: static void oss_anal_close (int *fdp)
122: {
1.1.1.7 root 123: int err;
124:
125: qemu_set_fd_handler (*fdp, NULL, NULL, NULL);
126: err = close (*fdp);
1.1.1.2 root 127: if (err) {
128: oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp);
129: }
130: *fdp = -1;
131: }
132:
1.1.1.7 root 133: static void oss_helper_poll_out (void *opaque)
134: {
135: (void) opaque;
136: audio_run ("oss_poll_out");
137: }
138:
139: static void oss_helper_poll_in (void *opaque)
140: {
141: (void) opaque;
142: audio_run ("oss_poll_in");
143: }
144:
145: static int oss_poll_out (HWVoiceOut *hw)
146: {
147: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
148:
149: return qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL);
150: }
151:
152: static int oss_poll_in (HWVoiceIn *hw)
153: {
154: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
155:
156: return qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL);
157: }
158:
1.1.1.2 root 159: static int oss_write (SWVoiceOut *sw, void *buf, int len)
1.1 root 160: {
1.1.1.2 root 161: return audio_pcm_sw_write (sw, buf, len);
1.1 root 162: }
163:
1.1.1.2 root 164: static int aud_to_ossfmt (audfmt_e fmt)
1.1 root 165: {
166: switch (fmt) {
1.1.1.2 root 167: case AUD_FMT_S8:
168: return AFMT_S8;
169:
170: case AUD_FMT_U8:
171: return AFMT_U8;
172:
173: case AUD_FMT_S16:
174: return AFMT_S16_LE;
175:
176: case AUD_FMT_U16:
177: return AFMT_U16_LE;
178:
1.1 root 179: default:
1.1.1.2 root 180: dolog ("Internal logic error: Bad audio format %d\n", fmt);
181: #ifdef DEBUG_AUDIO
182: abort ();
183: #endif
184: return AFMT_U8;
1.1 root 185: }
186: }
187:
1.1.1.2 root 188: static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness)
1.1 root 189: {
1.1.1.2 root 190: switch (ossfmt) {
191: case AFMT_S8:
1.1.1.5 root 192: *endianness = 0;
1.1.1.2 root 193: *fmt = AUD_FMT_S8;
194: break;
195:
196: case AFMT_U8:
197: *endianness = 0;
198: *fmt = AUD_FMT_U8;
199: break;
200:
201: case AFMT_S16_LE:
202: *endianness = 0;
203: *fmt = AUD_FMT_S16;
204: break;
205:
206: case AFMT_U16_LE:
207: *endianness = 0;
208: *fmt = AUD_FMT_U16;
209: break;
210:
211: case AFMT_S16_BE:
212: *endianness = 1;
213: *fmt = AUD_FMT_S16;
214: break;
215:
216: case AFMT_U16_BE:
217: *endianness = 1;
218: *fmt = AUD_FMT_U16;
219: break;
220:
1.1 root 221: default:
1.1.1.2 root 222: dolog ("Unrecognized audio format %d\n", ossfmt);
223: return -1;
1.1 root 224: }
1.1.1.2 root 225:
226: return 0;
1.1 root 227: }
228:
1.1.1.2 root 229: #if defined DEBUG_MISMATCHES || defined DEBUG
230: static void oss_dump_info (struct oss_params *req, struct oss_params *obt)
1.1 root 231: {
232: dolog ("parameter | requested value | obtained value\n");
233: dolog ("format | %10d | %10d\n", req->fmt, obt->fmt);
1.1.1.2 root 234: dolog ("channels | %10d | %10d\n",
235: req->nchannels, obt->nchannels);
1.1 root 236: dolog ("frequency | %10d | %10d\n", req->freq, obt->freq);
237: dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags);
1.1.1.2 root 238: dolog ("fragsize | %10d | %10d\n",
239: req->fragsize, obt->fragsize);
1.1 root 240: }
241: #endif
242:
1.1.1.8 ! root 243: #ifdef USE_DSP_POLICY
! 244: static int oss_get_version (int fd, int *version, const char *typ)
! 245: {
! 246: if (ioctl (fd, OSS_GETVERSION, &version)) {
! 247: #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
! 248: /*
! 249: * Looks like atm (20100109) FreeBSD knows OSS_GETVERSION
! 250: * since 7.x, but currently only on the mixer device (or in
! 251: * the Linuxolator), and in the native version that part of
! 252: * the code is in fact never reached so the ioctl fails anyway.
! 253: * Until this is fixed, just check the errno and if its what
! 254: * FreeBSD's sound drivers return atm assume they are new enough.
! 255: */
! 256: if (errno == EINVAL) {
! 257: *version = 0x040000;
! 258: return 0;
! 259: }
! 260: #endif
! 261: oss_logerr2 (errno, typ, "Failed to get OSS version\n");
! 262: return -1;
! 263: }
! 264: return 0;
! 265: }
! 266: #endif
! 267:
1.1.1.2 root 268: static int oss_open (int in, struct oss_params *req,
269: struct oss_params *obt, int *pfd)
1.1 root 270: {
271: int fd;
1.1.1.7 root 272: int oflags = conf.exclusive ? O_EXCL : 0;
1.1 root 273: audio_buf_info abinfo;
274: int fmt, freq, nchannels;
1.1.1.8 ! root 275: int setfragment = 1;
1.1.1.2 root 276: const char *dspname = in ? conf.devpath_in : conf.devpath_out;
277: const char *typ = in ? "ADC" : "DAC";
1.1 root 278:
1.1.1.7 root 279: /* Kludge needed to have working mmap on Linux */
280: oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY);
281:
282: fd = open (dspname, oflags | O_NONBLOCK);
1.1 root 283: if (-1 == fd) {
1.1.1.2 root 284: oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname);
1.1 root 285: return -1;
286: }
287:
288: freq = req->freq;
289: nchannels = req->nchannels;
290: fmt = req->fmt;
291:
292: if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
1.1.1.2 root 293: oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt);
1.1 root 294: goto err;
295: }
296:
297: if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
1.1.1.2 root 298: oss_logerr2 (errno, typ, "Failed to set number of channels %d\n",
299: req->nchannels);
1.1 root 300: goto err;
301: }
302:
303: if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
1.1.1.2 root 304: oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq);
1.1 root 305: goto err;
306: }
307:
1.1.1.5 root 308: if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) {
1.1.1.2 root 309: oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n");
1.1 root 310: goto err;
311: }
312:
1.1.1.8 ! root 313: #ifdef USE_DSP_POLICY
! 314: if (conf.policy >= 0) {
! 315: int version;
1.1.1.7 root 316:
1.1.1.8 ! root 317: if (!oss_get_version (fd, &version, typ)) {
! 318: if (conf.debug) {
! 319: dolog ("OSS version = %#x\n", version);
! 320: }
1.1.1.7 root 321:
1.1.1.8 ! root 322: if (version >= 0x040000) {
! 323: int policy = conf.policy;
! 324: if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) {
! 325: oss_logerr2 (errno, typ,
! 326: "Failed to set timing policy to %d\n",
! 327: conf.policy);
! 328: goto err;
! 329: }
! 330: setfragment = 0;
! 331: }
1.1.1.7 root 332: }
333: }
334: #endif
1.1.1.8 ! root 335:
! 336: if (setfragment) {
1.1.1.7 root 337: int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize);
338: if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
339: oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n",
340: req->nfrags, req->fragsize);
341: goto err;
342: }
1.1 root 343: }
344:
1.1.1.2 root 345: if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) {
346: oss_logerr2 (errno, typ, "Failed to get buffer length\n");
1.1 root 347: goto err;
348: }
349:
1.1.1.5 root 350: if (!abinfo.fragstotal || !abinfo.fragsize) {
351: AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n",
352: abinfo.fragstotal, abinfo.fragsize, typ);
353: goto err;
354: }
355:
1.1 root 356: obt->fmt = fmt;
357: obt->nchannels = nchannels;
358: obt->freq = freq;
359: obt->nfrags = abinfo.fragstotal;
360: obt->fragsize = abinfo.fragsize;
361: *pfd = fd;
362:
1.1.1.2 root 363: #ifdef DEBUG_MISMATCHES
1.1 root 364: if ((req->fmt != obt->fmt) ||
365: (req->nchannels != obt->nchannels) ||
366: (req->freq != obt->freq) ||
367: (req->fragsize != obt->fragsize) ||
368: (req->nfrags != obt->nfrags)) {
369: dolog ("Audio parameters mismatch\n");
1.1.1.2 root 370: oss_dump_info (req, obt);
1.1 root 371: }
1.1.1.2 root 372: #endif
1.1 root 373:
1.1.1.2 root 374: #ifdef DEBUG
375: oss_dump_info (req, obt);
1.1 root 376: #endif
377: return 0;
378:
1.1.1.2 root 379: err:
380: oss_anal_close (&fd);
1.1 root 381: return -1;
382: }
383:
1.1.1.7 root 384: static void oss_write_pending (OSSVoiceOut *oss)
385: {
386: HWVoiceOut *hw = &oss->hw;
387:
388: if (oss->mmapped) {
389: return;
390: }
391:
392: while (oss->pending) {
393: int samples_written;
394: ssize_t bytes_written;
395: int samples_till_end = hw->samples - oss->wpos;
396: int samples_to_write = audio_MIN (oss->pending, samples_till_end);
397: int bytes_to_write = samples_to_write << hw->info.shift;
398: void *pcm = advance (oss->pcm_buf, oss->wpos << hw->info.shift);
399:
400: bytes_written = write (oss->fd, pcm, bytes_to_write);
401: if (bytes_written < 0) {
402: if (errno != EAGAIN) {
403: oss_logerr (errno, "failed to write %d bytes\n",
404: bytes_to_write);
405: }
406: break;
407: }
408:
409: if (bytes_written & hw->info.align) {
410: dolog ("misaligned write asked for %d, but got %zd\n",
411: bytes_to_write, bytes_written);
412: return;
413: }
414:
415: samples_written = bytes_written >> hw->info.shift;
416: oss->pending -= samples_written;
417: oss->wpos = (oss->wpos + samples_written) % hw->samples;
418: if (bytes_written - bytes_to_write) {
419: break;
420: }
421: }
422: }
423:
424: static int oss_run_out (HWVoiceOut *hw, int live)
1.1 root 425: {
1.1.1.2 root 426: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1.1.7 root 427: int err, decr;
1.1 root 428: struct audio_buf_info abinfo;
429: struct count_info cntinfo;
1.1.1.2 root 430: int bufsize;
431:
432: bufsize = hw->samples << hw->info.shift;
1.1 root 433:
434: if (oss->mmapped) {
1.1.1.7 root 435: int bytes, pos;
1.1 root 436:
437: err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo);
438: if (err < 0) {
1.1.1.2 root 439: oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
440: return 0;
1.1 root 441: }
442:
1.1.1.7 root 443: pos = hw->rpos << hw->info.shift;
444: bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize);
1.1.1.2 root 445: decr = audio_MIN (bytes >> hw->info.shift, live);
1.1 root 446: }
447: else {
448: err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo);
449: if (err < 0) {
1.1.1.2 root 450: oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
451: return 0;
452: }
453:
1.1.1.3 root 454: if (abinfo.bytes > bufsize) {
455: if (conf.debug) {
456: dolog ("warning: Invalid available size, size=%d bufsize=%d\n"
1.1.1.7 root 457: "please report your OS/audio hw to [email protected]\n",
1.1.1.3 root 458: abinfo.bytes, bufsize);
459: }
460: abinfo.bytes = bufsize;
461: }
462:
463: if (abinfo.bytes < 0) {
464: if (conf.debug) {
465: dolog ("warning: Invalid available size, size=%d bufsize=%d\n",
466: abinfo.bytes, bufsize);
467: }
1.1.1.2 root 468: return 0;
1.1 root 469: }
470:
1.1.1.2 root 471: decr = audio_MIN (abinfo.bytes >> hw->info.shift, live);
472: if (!decr) {
473: return 0;
474: }
1.1 root 475: }
476:
1.1.1.7 root 477: decr = audio_pcm_hw_clip_out (hw, oss->pcm_buf, decr, oss->pending);
478: oss->pending += decr;
479: oss_write_pending (oss);
1.1 root 480:
1.1.1.2 root 481: return decr;
1.1 root 482: }
483:
1.1.1.2 root 484: static void oss_fini_out (HWVoiceOut *hw)
1.1 root 485: {
486: int err;
1.1.1.2 root 487: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 488:
1.1.1.2 root 489: ldebug ("oss_fini\n");
490: oss_anal_close (&oss->fd);
1.1 root 491:
492: if (oss->pcm_buf) {
493: if (oss->mmapped) {
1.1.1.2 root 494: err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 495: if (err) {
1.1.1.2 root 496: oss_logerr (errno, "Failed to unmap buffer %p, size %d\n",
497: oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 498: }
499: }
500: else {
501: qemu_free (oss->pcm_buf);
502: }
503: oss->pcm_buf = NULL;
504: }
505: }
506:
1.1.1.5 root 507: static int oss_init_out (HWVoiceOut *hw, struct audsettings *as)
1.1 root 508: {
1.1.1.2 root 509: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 510: struct oss_params req, obt;
1.1.1.2 root 511: int endianness;
512: int err;
513: int fd;
514: audfmt_e effective_fmt;
1.1.1.5 root 515: struct audsettings obt_as;
1.1.1.2 root 516:
517: oss->fd = -1;
1.1 root 518:
1.1.1.2 root 519: req.fmt = aud_to_ossfmt (as->fmt);
520: req.freq = as->freq;
521: req.nchannels = as->nchannels;
1.1 root 522: req.fragsize = conf.fragsize;
523: req.nfrags = conf.nfrags;
524:
1.1.1.2 root 525: if (oss_open (0, &req, &obt, &fd)) {
1.1 root 526: return -1;
1.1.1.2 root 527: }
1.1 root 528:
1.1.1.2 root 529: err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness);
530: if (err) {
531: oss_anal_close (&fd);
532: return -1;
533: }
1.1 root 534:
1.1.1.2 root 535: obt_as.freq = obt.freq;
536: obt_as.nchannels = obt.nchannels;
537: obt_as.fmt = effective_fmt;
1.1.1.3 root 538: obt_as.endianness = endianness;
1.1.1.2 root 539:
1.1.1.3 root 540: audio_pcm_init_info (&hw->info, &obt_as);
1.1 root 541: oss->nfrags = obt.nfrags;
542: oss->fragsize = obt.fragsize;
1.1.1.2 root 543:
544: if (obt.nfrags * obt.fragsize & hw->info.align) {
545: dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n",
546: obt.nfrags * obt.fragsize, hw->info.align + 1);
547: }
548:
549: hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift;
1.1 root 550:
551: oss->mmapped = 0;
552: if (conf.try_mmap) {
1.1.1.2 root 553: oss->pcm_buf = mmap (
1.1.1.6 root 554: NULL,
1.1.1.2 root 555: hw->samples << hw->info.shift,
556: PROT_READ | PROT_WRITE,
557: MAP_SHARED,
558: fd,
559: 0
560: );
1.1 root 561: if (oss->pcm_buf == MAP_FAILED) {
1.1.1.2 root 562: oss_logerr (errno, "Failed to map %d bytes of DAC\n",
563: hw->samples << hw->info.shift);
1.1.1.7 root 564: }
565: else {
1.1 root 566: int err;
567: int trig = 0;
1.1.1.2 root 568: if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
569: oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
1.1 root 570: }
571: else {
572: trig = PCM_ENABLE_OUTPUT;
1.1.1.2 root 573: if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
574: oss_logerr (
575: errno,
576: "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
577: );
1.1 root 578: }
579: else {
580: oss->mmapped = 1;
581: }
582: }
583:
584: if (!oss->mmapped) {
1.1.1.2 root 585: err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 586: if (err) {
1.1.1.2 root 587: oss_logerr (errno, "Failed to unmap buffer %p size %d\n",
588: oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 589: }
590: }
591: }
592: }
593:
594: if (!oss->mmapped) {
1.1.1.2 root 595: oss->pcm_buf = audio_calloc (
596: AUDIO_FUNC,
597: hw->samples,
598: 1 << hw->info.shift
599: );
1.1 root 600: if (!oss->pcm_buf) {
1.1.1.2 root 601: dolog (
602: "Could not allocate DAC buffer (%d samples, each %d bytes)\n",
603: hw->samples,
604: 1 << hw->info.shift
605: );
606: oss_anal_close (&fd);
1.1 root 607: return -1;
608: }
609: }
610:
1.1.1.2 root 611: oss->fd = fd;
1.1 root 612: return 0;
613: }
614:
1.1.1.2 root 615: static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...)
1.1 root 616: {
617: int trig;
1.1.1.2 root 618: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 619:
620: switch (cmd) {
621: case VOICE_ENABLE:
1.1.1.7 root 622: {
623: va_list ap;
624: int poll_mode;
625:
626: va_start (ap, cmd);
627: poll_mode = va_arg (ap, int);
628: va_end (ap);
629:
630: ldebug ("enabling voice\n");
631: if (poll_mode && oss_poll_out (hw)) {
632: poll_mode = 0;
633: }
634: hw->poll_mode = poll_mode;
635:
636: if (!oss->mmapped) {
637: return 0;
638: }
639:
640: audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples);
641: trig = PCM_ENABLE_OUTPUT;
642: if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
643: oss_logerr (
644: errno,
645: "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
646: );
647: return -1;
648: }
1.1 root 649: }
650: break;
651:
652: case VOICE_DISABLE:
1.1.1.7 root 653: if (hw->poll_mode) {
654: qemu_set_fd_handler (oss->fd, NULL, NULL, NULL);
655: hw->poll_mode = 0;
656: }
657:
658: if (!oss->mmapped) {
659: return 0;
660: }
661:
1.1 root 662: ldebug ("disabling voice\n");
663: trig = 0;
664: if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
1.1.1.2 root 665: oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
1.1 root 666: return -1;
667: }
668: break;
669: }
670: return 0;
671: }
672:
1.1.1.5 root 673: static int oss_init_in (HWVoiceIn *hw, struct audsettings *as)
1.1.1.2 root 674: {
675: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
676: struct oss_params req, obt;
677: int endianness;
678: int err;
679: int fd;
680: audfmt_e effective_fmt;
1.1.1.5 root 681: struct audsettings obt_as;
1.1.1.2 root 682:
683: oss->fd = -1;
684:
685: req.fmt = aud_to_ossfmt (as->fmt);
686: req.freq = as->freq;
687: req.nchannels = as->nchannels;
688: req.fragsize = conf.fragsize;
689: req.nfrags = conf.nfrags;
690: if (oss_open (1, &req, &obt, &fd)) {
691: return -1;
692: }
693:
694: err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness);
695: if (err) {
696: oss_anal_close (&fd);
697: return -1;
698: }
699:
700: obt_as.freq = obt.freq;
701: obt_as.nchannels = obt.nchannels;
702: obt_as.fmt = effective_fmt;
1.1.1.3 root 703: obt_as.endianness = endianness;
1.1.1.2 root 704:
1.1.1.3 root 705: audio_pcm_init_info (&hw->info, &obt_as);
1.1.1.2 root 706: oss->nfrags = obt.nfrags;
707: oss->fragsize = obt.fragsize;
708:
709: if (obt.nfrags * obt.fragsize & hw->info.align) {
710: dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n",
711: obt.nfrags * obt.fragsize, hw->info.align + 1);
712: }
713:
714: hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift;
715: oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
716: if (!oss->pcm_buf) {
717: dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n",
718: hw->samples, 1 << hw->info.shift);
719: oss_anal_close (&fd);
720: return -1;
721: }
722:
723: oss->fd = fd;
724: return 0;
725: }
726:
727: static void oss_fini_in (HWVoiceIn *hw)
728: {
729: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
730:
731: oss_anal_close (&oss->fd);
732:
733: if (oss->pcm_buf) {
734: qemu_free (oss->pcm_buf);
735: oss->pcm_buf = NULL;
736: }
737: }
738:
739: static int oss_run_in (HWVoiceIn *hw)
740: {
741: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
742: int hwshift = hw->info.shift;
743: int i;
744: int live = audio_pcm_hw_get_live_in (hw);
745: int dead = hw->samples - live;
746: size_t read_samples = 0;
747: struct {
748: int add;
749: int len;
750: } bufs[2] = {
1.1.1.7 root 751: { .add = hw->wpos, .len = 0 },
752: { .add = 0, .len = 0 }
1.1.1.2 root 753: };
754:
755: if (!dead) {
756: return 0;
757: }
758:
759: if (hw->wpos + dead > hw->samples) {
760: bufs[0].len = (hw->samples - hw->wpos) << hwshift;
761: bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift;
762: }
763: else {
764: bufs[0].len = dead << hwshift;
765: }
766:
767: for (i = 0; i < 2; ++i) {
768: ssize_t nread;
769:
770: if (bufs[i].len) {
771: void *p = advance (oss->pcm_buf, bufs[i].add << hwshift);
772: nread = read (oss->fd, p, bufs[i].len);
773:
774: if (nread > 0) {
775: if (nread & hw->info.align) {
776: dolog ("warning: Misaligned read %zd (requested %d), "
777: "alignment %d\n", nread, bufs[i].add << hwshift,
778: hw->info.align + 1);
779: }
780: read_samples += nread >> hwshift;
781: hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift,
782: &nominal_volume);
783: }
784:
785: if (bufs[i].len - nread) {
786: if (nread == -1) {
787: switch (errno) {
788: case EINTR:
789: case EAGAIN:
790: break;
791: default:
792: oss_logerr (
793: errno,
794: "Failed to read %d bytes of audio (to %p)\n",
795: bufs[i].len, p
796: );
797: break;
798: }
799: }
800: break;
801: }
802: }
803: }
804:
805: hw->wpos = (hw->wpos + read_samples) % hw->samples;
806: return read_samples;
807: }
808:
809: static int oss_read (SWVoiceIn *sw, void *buf, int size)
810: {
811: return audio_pcm_sw_read (sw, buf, size);
812: }
813:
814: static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...)
815: {
1.1.1.7 root 816: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
817:
818: switch (cmd) {
819: case VOICE_ENABLE:
820: {
821: va_list ap;
822: int poll_mode;
823:
824: va_start (ap, cmd);
825: poll_mode = va_arg (ap, int);
826: va_end (ap);
827:
828: if (poll_mode && oss_poll_in (hw)) {
829: poll_mode = 0;
830: }
831: hw->poll_mode = poll_mode;
832: }
833: break;
834:
835: case VOICE_DISABLE:
836: if (hw->poll_mode) {
837: hw->poll_mode = 0;
838: qemu_set_fd_handler (oss->fd, NULL, NULL, NULL);
839: }
840: break;
841: }
1.1.1.2 root 842: return 0;
843: }
844:
1.1 root 845: static void *oss_audio_init (void)
846: {
847: return &conf;
848: }
849:
850: static void oss_audio_fini (void *opaque)
851: {
1.1.1.2 root 852: (void) opaque;
1.1 root 853: }
854:
1.1.1.2 root 855: static struct audio_option oss_options[] = {
1.1.1.7 root 856: {
857: .name = "FRAGSIZE",
858: .tag = AUD_OPT_INT,
859: .valp = &conf.fragsize,
860: .descr = "Fragment size in bytes"
861: },
862: {
863: .name = "NFRAGS",
864: .tag = AUD_OPT_INT,
865: .valp = &conf.nfrags,
866: .descr = "Number of fragments"
867: },
868: {
869: .name = "MMAP",
870: .tag = AUD_OPT_BOOL,
871: .valp = &conf.try_mmap,
872: .descr = "Try using memory mapped access"
873: },
874: {
875: .name = "DAC_DEV",
876: .tag = AUD_OPT_STR,
877: .valp = &conf.devpath_out,
878: .descr = "Path to DAC device"
879: },
880: {
881: .name = "ADC_DEV",
882: .tag = AUD_OPT_STR,
883: .valp = &conf.devpath_in,
884: .descr = "Path to ADC device"
885: },
886: {
887: .name = "EXCLUSIVE",
888: .tag = AUD_OPT_BOOL,
889: .valp = &conf.exclusive,
890: .descr = "Open device in exclusive mode (vmix wont work)"
891: },
1.1.1.8 ! root 892: #ifdef USE_DSP_POLICY
1.1.1.7 root 893: {
894: .name = "POLICY",
895: .tag = AUD_OPT_INT,
896: .valp = &conf.policy,
897: .descr = "Set the timing policy of the device, -1 to use fragment mode",
898: },
899: #endif
900: {
901: .name = "DEBUG",
902: .tag = AUD_OPT_BOOL,
903: .valp = &conf.debug,
904: .descr = "Turn on some debugging messages"
905: },
906: { /* End of list */ }
1.1.1.2 root 907: };
908:
909: static struct audio_pcm_ops oss_pcm_ops = {
1.1.1.7 root 910: .init_out = oss_init_out,
911: .fini_out = oss_fini_out,
912: .run_out = oss_run_out,
913: .write = oss_write,
914: .ctl_out = oss_ctl_out,
915:
916: .init_in = oss_init_in,
917: .fini_in = oss_fini_in,
918: .run_in = oss_run_in,
919: .read = oss_read,
920: .ctl_in = oss_ctl_in
1.1 root 921: };
922:
1.1.1.2 root 923: struct audio_driver oss_audio_driver = {
1.1.1.7 root 924: .name = "oss",
925: .descr = "OSS http://www.opensound.com",
926: .options = oss_options,
927: .init = oss_audio_init,
928: .fini = oss_audio_fini,
929: .pcm_ops = &oss_pcm_ops,
930: .can_be_default = 1,
931: .max_voices_out = INT_MAX,
932: .max_voices_in = INT_MAX,
933: .voice_size_out = sizeof (OSSVoiceOut),
934: .voice_size_in = sizeof (OSSVoiceIn)
1.1 root 935: };
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.