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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:
1.1.1.9 root 164: static int aud_to_ossfmt (audfmt_e fmt, int endianness)
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:
1.1.1.9 root 174: if (endianness) {
175: return AFMT_S16_BE;
176: }
177: else {
178: return AFMT_S16_LE;
179: }
1.1.1.2 root 180:
181: case AUD_FMT_U16:
1.1.1.9 root 182: if (endianness) {
183: return AFMT_U16_BE;
184: }
185: else {
186: return AFMT_U16_LE;
187: }
1.1.1.2 root 188:
1.1 root 189: default:
1.1.1.2 root 190: dolog ("Internal logic error: Bad audio format %d\n", fmt);
191: #ifdef DEBUG_AUDIO
192: abort ();
193: #endif
194: return AFMT_U8;
1.1 root 195: }
196: }
197:
1.1.1.2 root 198: static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness)
1.1 root 199: {
1.1.1.2 root 200: switch (ossfmt) {
201: case AFMT_S8:
1.1.1.5 root 202: *endianness = 0;
1.1.1.2 root 203: *fmt = AUD_FMT_S8;
204: break;
205:
206: case AFMT_U8:
207: *endianness = 0;
208: *fmt = AUD_FMT_U8;
209: break;
210:
211: case AFMT_S16_LE:
212: *endianness = 0;
213: *fmt = AUD_FMT_S16;
214: break;
215:
216: case AFMT_U16_LE:
217: *endianness = 0;
218: *fmt = AUD_FMT_U16;
219: break;
220:
221: case AFMT_S16_BE:
222: *endianness = 1;
223: *fmt = AUD_FMT_S16;
224: break;
225:
226: case AFMT_U16_BE:
227: *endianness = 1;
228: *fmt = AUD_FMT_U16;
229: break;
230:
1.1 root 231: default:
1.1.1.2 root 232: dolog ("Unrecognized audio format %d\n", ossfmt);
233: return -1;
1.1 root 234: }
1.1.1.2 root 235:
236: return 0;
1.1 root 237: }
238:
1.1.1.2 root 239: #if defined DEBUG_MISMATCHES || defined DEBUG
240: static void oss_dump_info (struct oss_params *req, struct oss_params *obt)
1.1 root 241: {
242: dolog ("parameter | requested value | obtained value\n");
243: dolog ("format | %10d | %10d\n", req->fmt, obt->fmt);
1.1.1.2 root 244: dolog ("channels | %10d | %10d\n",
245: req->nchannels, obt->nchannels);
1.1 root 246: dolog ("frequency | %10d | %10d\n", req->freq, obt->freq);
247: dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags);
1.1.1.2 root 248: dolog ("fragsize | %10d | %10d\n",
249: req->fragsize, obt->fragsize);
1.1 root 250: }
251: #endif
252:
1.1.1.8 root 253: #ifdef USE_DSP_POLICY
254: static int oss_get_version (int fd, int *version, const char *typ)
255: {
256: if (ioctl (fd, OSS_GETVERSION, &version)) {
257: #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
258: /*
259: * Looks like atm (20100109) FreeBSD knows OSS_GETVERSION
260: * since 7.x, but currently only on the mixer device (or in
261: * the Linuxolator), and in the native version that part of
262: * the code is in fact never reached so the ioctl fails anyway.
263: * Until this is fixed, just check the errno and if its what
264: * FreeBSD's sound drivers return atm assume they are new enough.
265: */
266: if (errno == EINVAL) {
267: *version = 0x040000;
268: return 0;
269: }
270: #endif
271: oss_logerr2 (errno, typ, "Failed to get OSS version\n");
272: return -1;
273: }
274: return 0;
275: }
276: #endif
277:
1.1.1.2 root 278: static int oss_open (int in, struct oss_params *req,
279: struct oss_params *obt, int *pfd)
1.1 root 280: {
281: int fd;
1.1.1.7 root 282: int oflags = conf.exclusive ? O_EXCL : 0;
1.1 root 283: audio_buf_info abinfo;
284: int fmt, freq, nchannels;
1.1.1.8 root 285: int setfragment = 1;
1.1.1.2 root 286: const char *dspname = in ? conf.devpath_in : conf.devpath_out;
287: const char *typ = in ? "ADC" : "DAC";
1.1 root 288:
1.1.1.7 root 289: /* Kludge needed to have working mmap on Linux */
290: oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY);
291:
292: fd = open (dspname, oflags | O_NONBLOCK);
1.1 root 293: if (-1 == fd) {
1.1.1.2 root 294: oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname);
1.1 root 295: return -1;
296: }
297:
298: freq = req->freq;
299: nchannels = req->nchannels;
300: fmt = req->fmt;
301:
302: if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
1.1.1.2 root 303: oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt);
1.1 root 304: goto err;
305: }
306:
307: if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
1.1.1.2 root 308: oss_logerr2 (errno, typ, "Failed to set number of channels %d\n",
309: req->nchannels);
1.1 root 310: goto err;
311: }
312:
313: if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
1.1.1.2 root 314: oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq);
1.1 root 315: goto err;
316: }
317:
1.1.1.5 root 318: if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) {
1.1.1.2 root 319: oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n");
1.1 root 320: goto err;
321: }
322:
1.1.1.8 root 323: #ifdef USE_DSP_POLICY
324: if (conf.policy >= 0) {
325: int version;
1.1.1.7 root 326:
1.1.1.8 root 327: if (!oss_get_version (fd, &version, typ)) {
328: if (conf.debug) {
329: dolog ("OSS version = %#x\n", version);
330: }
1.1.1.7 root 331:
1.1.1.8 root 332: if (version >= 0x040000) {
333: int policy = conf.policy;
334: if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) {
335: oss_logerr2 (errno, typ,
336: "Failed to set timing policy to %d\n",
337: conf.policy);
338: goto err;
339: }
340: setfragment = 0;
341: }
1.1.1.7 root 342: }
343: }
344: #endif
1.1.1.8 root 345:
346: if (setfragment) {
1.1.1.7 root 347: int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize);
348: if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
349: oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n",
350: req->nfrags, req->fragsize);
351: goto err;
352: }
1.1 root 353: }
354:
1.1.1.2 root 355: if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) {
356: oss_logerr2 (errno, typ, "Failed to get buffer length\n");
1.1 root 357: goto err;
358: }
359:
1.1.1.5 root 360: if (!abinfo.fragstotal || !abinfo.fragsize) {
361: AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n",
362: abinfo.fragstotal, abinfo.fragsize, typ);
363: goto err;
364: }
365:
1.1 root 366: obt->fmt = fmt;
367: obt->nchannels = nchannels;
368: obt->freq = freq;
369: obt->nfrags = abinfo.fragstotal;
370: obt->fragsize = abinfo.fragsize;
371: *pfd = fd;
372:
1.1.1.2 root 373: #ifdef DEBUG_MISMATCHES
1.1 root 374: if ((req->fmt != obt->fmt) ||
375: (req->nchannels != obt->nchannels) ||
376: (req->freq != obt->freq) ||
377: (req->fragsize != obt->fragsize) ||
378: (req->nfrags != obt->nfrags)) {
379: dolog ("Audio parameters mismatch\n");
1.1.1.2 root 380: oss_dump_info (req, obt);
1.1 root 381: }
1.1.1.2 root 382: #endif
1.1 root 383:
1.1.1.2 root 384: #ifdef DEBUG
385: oss_dump_info (req, obt);
1.1 root 386: #endif
387: return 0;
388:
1.1.1.2 root 389: err:
390: oss_anal_close (&fd);
1.1 root 391: return -1;
392: }
393:
1.1.1.7 root 394: static void oss_write_pending (OSSVoiceOut *oss)
395: {
396: HWVoiceOut *hw = &oss->hw;
397:
398: if (oss->mmapped) {
399: return;
400: }
401:
402: while (oss->pending) {
403: int samples_written;
404: ssize_t bytes_written;
405: int samples_till_end = hw->samples - oss->wpos;
406: int samples_to_write = audio_MIN (oss->pending, samples_till_end);
407: int bytes_to_write = samples_to_write << hw->info.shift;
408: void *pcm = advance (oss->pcm_buf, oss->wpos << hw->info.shift);
409:
410: bytes_written = write (oss->fd, pcm, bytes_to_write);
411: if (bytes_written < 0) {
412: if (errno != EAGAIN) {
413: oss_logerr (errno, "failed to write %d bytes\n",
414: bytes_to_write);
415: }
416: break;
417: }
418:
419: if (bytes_written & hw->info.align) {
420: dolog ("misaligned write asked for %d, but got %zd\n",
421: bytes_to_write, bytes_written);
422: return;
423: }
424:
425: samples_written = bytes_written >> hw->info.shift;
426: oss->pending -= samples_written;
427: oss->wpos = (oss->wpos + samples_written) % hw->samples;
428: if (bytes_written - bytes_to_write) {
429: break;
430: }
431: }
432: }
433:
434: static int oss_run_out (HWVoiceOut *hw, int live)
1.1 root 435: {
1.1.1.2 root 436: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1.1.7 root 437: int err, decr;
1.1 root 438: struct audio_buf_info abinfo;
439: struct count_info cntinfo;
1.1.1.2 root 440: int bufsize;
441:
442: bufsize = hw->samples << hw->info.shift;
1.1 root 443:
444: if (oss->mmapped) {
1.1.1.7 root 445: int bytes, pos;
1.1 root 446:
447: err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo);
448: if (err < 0) {
1.1.1.2 root 449: oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
450: return 0;
1.1 root 451: }
452:
1.1.1.7 root 453: pos = hw->rpos << hw->info.shift;
454: bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize);
1.1.1.2 root 455: decr = audio_MIN (bytes >> hw->info.shift, live);
1.1 root 456: }
457: else {
458: err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo);
459: if (err < 0) {
1.1.1.2 root 460: oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
461: return 0;
462: }
463:
1.1.1.3 root 464: if (abinfo.bytes > bufsize) {
465: if (conf.debug) {
466: dolog ("warning: Invalid available size, size=%d bufsize=%d\n"
1.1.1.7 root 467: "please report your OS/audio hw to [email protected]\n",
1.1.1.3 root 468: abinfo.bytes, bufsize);
469: }
470: abinfo.bytes = bufsize;
471: }
472:
473: if (abinfo.bytes < 0) {
474: if (conf.debug) {
475: dolog ("warning: Invalid available size, size=%d bufsize=%d\n",
476: abinfo.bytes, bufsize);
477: }
1.1.1.2 root 478: return 0;
1.1 root 479: }
480:
1.1.1.2 root 481: decr = audio_MIN (abinfo.bytes >> hw->info.shift, live);
482: if (!decr) {
483: return 0;
484: }
1.1 root 485: }
486:
1.1.1.7 root 487: decr = audio_pcm_hw_clip_out (hw, oss->pcm_buf, decr, oss->pending);
488: oss->pending += decr;
489: oss_write_pending (oss);
1.1 root 490:
1.1.1.2 root 491: return decr;
1.1 root 492: }
493:
1.1.1.2 root 494: static void oss_fini_out (HWVoiceOut *hw)
1.1 root 495: {
496: int err;
1.1.1.2 root 497: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 498:
1.1.1.2 root 499: ldebug ("oss_fini\n");
500: oss_anal_close (&oss->fd);
1.1 root 501:
502: if (oss->pcm_buf) {
503: if (oss->mmapped) {
1.1.1.2 root 504: err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 505: if (err) {
1.1.1.2 root 506: oss_logerr (errno, "Failed to unmap buffer %p, size %d\n",
507: oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 508: }
509: }
510: else {
1.1.1.10! root 511: g_free (oss->pcm_buf);
1.1 root 512: }
513: oss->pcm_buf = NULL;
514: }
515: }
516:
1.1.1.5 root 517: static int oss_init_out (HWVoiceOut *hw, struct audsettings *as)
1.1 root 518: {
1.1.1.2 root 519: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 520: struct oss_params req, obt;
1.1.1.2 root 521: int endianness;
522: int err;
523: int fd;
524: audfmt_e effective_fmt;
1.1.1.5 root 525: struct audsettings obt_as;
1.1.1.2 root 526:
527: oss->fd = -1;
1.1 root 528:
1.1.1.9 root 529: req.fmt = aud_to_ossfmt (as->fmt, as->endianness);
1.1.1.2 root 530: req.freq = as->freq;
531: req.nchannels = as->nchannels;
1.1 root 532: req.fragsize = conf.fragsize;
533: req.nfrags = conf.nfrags;
534:
1.1.1.2 root 535: if (oss_open (0, &req, &obt, &fd)) {
1.1 root 536: return -1;
1.1.1.2 root 537: }
1.1 root 538:
1.1.1.2 root 539: err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness);
540: if (err) {
541: oss_anal_close (&fd);
542: return -1;
543: }
1.1 root 544:
1.1.1.2 root 545: obt_as.freq = obt.freq;
546: obt_as.nchannels = obt.nchannels;
547: obt_as.fmt = effective_fmt;
1.1.1.3 root 548: obt_as.endianness = endianness;
1.1.1.2 root 549:
1.1.1.3 root 550: audio_pcm_init_info (&hw->info, &obt_as);
1.1 root 551: oss->nfrags = obt.nfrags;
552: oss->fragsize = obt.fragsize;
1.1.1.2 root 553:
554: if (obt.nfrags * obt.fragsize & hw->info.align) {
555: dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n",
556: obt.nfrags * obt.fragsize, hw->info.align + 1);
557: }
558:
559: hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift;
1.1 root 560:
561: oss->mmapped = 0;
562: if (conf.try_mmap) {
1.1.1.2 root 563: oss->pcm_buf = mmap (
1.1.1.6 root 564: NULL,
1.1.1.2 root 565: hw->samples << hw->info.shift,
566: PROT_READ | PROT_WRITE,
567: MAP_SHARED,
568: fd,
569: 0
570: );
1.1 root 571: if (oss->pcm_buf == MAP_FAILED) {
1.1.1.2 root 572: oss_logerr (errno, "Failed to map %d bytes of DAC\n",
573: hw->samples << hw->info.shift);
1.1.1.7 root 574: }
575: else {
1.1 root 576: int err;
577: int trig = 0;
1.1.1.2 root 578: if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
579: oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
1.1 root 580: }
581: else {
582: trig = PCM_ENABLE_OUTPUT;
1.1.1.2 root 583: if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
584: oss_logerr (
585: errno,
586: "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
587: );
1.1 root 588: }
589: else {
590: oss->mmapped = 1;
591: }
592: }
593:
594: if (!oss->mmapped) {
1.1.1.2 root 595: err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 596: if (err) {
1.1.1.2 root 597: oss_logerr (errno, "Failed to unmap buffer %p size %d\n",
598: oss->pcm_buf, hw->samples << hw->info.shift);
1.1 root 599: }
600: }
601: }
602: }
603:
604: if (!oss->mmapped) {
1.1.1.2 root 605: oss->pcm_buf = audio_calloc (
606: AUDIO_FUNC,
607: hw->samples,
608: 1 << hw->info.shift
609: );
1.1 root 610: if (!oss->pcm_buf) {
1.1.1.2 root 611: dolog (
612: "Could not allocate DAC buffer (%d samples, each %d bytes)\n",
613: hw->samples,
614: 1 << hw->info.shift
615: );
616: oss_anal_close (&fd);
1.1 root 617: return -1;
618: }
619: }
620:
1.1.1.2 root 621: oss->fd = fd;
1.1 root 622: return 0;
623: }
624:
1.1.1.2 root 625: static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...)
1.1 root 626: {
627: int trig;
1.1.1.2 root 628: OSSVoiceOut *oss = (OSSVoiceOut *) hw;
1.1 root 629:
630: switch (cmd) {
631: case VOICE_ENABLE:
1.1.1.7 root 632: {
633: va_list ap;
634: int poll_mode;
635:
636: va_start (ap, cmd);
637: poll_mode = va_arg (ap, int);
638: va_end (ap);
639:
640: ldebug ("enabling voice\n");
641: if (poll_mode && oss_poll_out (hw)) {
642: poll_mode = 0;
643: }
644: hw->poll_mode = poll_mode;
645:
646: if (!oss->mmapped) {
647: return 0;
648: }
649:
650: audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples);
651: trig = PCM_ENABLE_OUTPUT;
652: if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
653: oss_logerr (
654: errno,
655: "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
656: );
657: return -1;
658: }
1.1 root 659: }
660: break;
661:
662: case VOICE_DISABLE:
1.1.1.7 root 663: if (hw->poll_mode) {
664: qemu_set_fd_handler (oss->fd, NULL, NULL, NULL);
665: hw->poll_mode = 0;
666: }
667:
668: if (!oss->mmapped) {
669: return 0;
670: }
671:
1.1 root 672: ldebug ("disabling voice\n");
673: trig = 0;
674: if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
1.1.1.2 root 675: oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
1.1 root 676: return -1;
677: }
678: break;
679: }
680: return 0;
681: }
682:
1.1.1.5 root 683: static int oss_init_in (HWVoiceIn *hw, struct audsettings *as)
1.1.1.2 root 684: {
685: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
686: struct oss_params req, obt;
687: int endianness;
688: int err;
689: int fd;
690: audfmt_e effective_fmt;
1.1.1.5 root 691: struct audsettings obt_as;
1.1.1.2 root 692:
693: oss->fd = -1;
694:
1.1.1.9 root 695: req.fmt = aud_to_ossfmt (as->fmt, as->endianness);
1.1.1.2 root 696: req.freq = as->freq;
697: req.nchannels = as->nchannels;
698: req.fragsize = conf.fragsize;
699: req.nfrags = conf.nfrags;
700: if (oss_open (1, &req, &obt, &fd)) {
701: return -1;
702: }
703:
704: err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness);
705: if (err) {
706: oss_anal_close (&fd);
707: return -1;
708: }
709:
710: obt_as.freq = obt.freq;
711: obt_as.nchannels = obt.nchannels;
712: obt_as.fmt = effective_fmt;
1.1.1.3 root 713: obt_as.endianness = endianness;
1.1.1.2 root 714:
1.1.1.3 root 715: audio_pcm_init_info (&hw->info, &obt_as);
1.1.1.2 root 716: oss->nfrags = obt.nfrags;
717: oss->fragsize = obt.fragsize;
718:
719: if (obt.nfrags * obt.fragsize & hw->info.align) {
720: dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n",
721: obt.nfrags * obt.fragsize, hw->info.align + 1);
722: }
723:
724: hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift;
725: oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
726: if (!oss->pcm_buf) {
727: dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n",
728: hw->samples, 1 << hw->info.shift);
729: oss_anal_close (&fd);
730: return -1;
731: }
732:
733: oss->fd = fd;
734: return 0;
735: }
736:
737: static void oss_fini_in (HWVoiceIn *hw)
738: {
739: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
740:
741: oss_anal_close (&oss->fd);
742:
743: if (oss->pcm_buf) {
1.1.1.10! root 744: g_free (oss->pcm_buf);
1.1.1.2 root 745: oss->pcm_buf = NULL;
746: }
747: }
748:
749: static int oss_run_in (HWVoiceIn *hw)
750: {
751: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
752: int hwshift = hw->info.shift;
753: int i;
754: int live = audio_pcm_hw_get_live_in (hw);
755: int dead = hw->samples - live;
756: size_t read_samples = 0;
757: struct {
758: int add;
759: int len;
760: } bufs[2] = {
1.1.1.7 root 761: { .add = hw->wpos, .len = 0 },
762: { .add = 0, .len = 0 }
1.1.1.2 root 763: };
764:
765: if (!dead) {
766: return 0;
767: }
768:
769: if (hw->wpos + dead > hw->samples) {
770: bufs[0].len = (hw->samples - hw->wpos) << hwshift;
771: bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift;
772: }
773: else {
774: bufs[0].len = dead << hwshift;
775: }
776:
777: for (i = 0; i < 2; ++i) {
778: ssize_t nread;
779:
780: if (bufs[i].len) {
781: void *p = advance (oss->pcm_buf, bufs[i].add << hwshift);
782: nread = read (oss->fd, p, bufs[i].len);
783:
784: if (nread > 0) {
785: if (nread & hw->info.align) {
786: dolog ("warning: Misaligned read %zd (requested %d), "
787: "alignment %d\n", nread, bufs[i].add << hwshift,
788: hw->info.align + 1);
789: }
790: read_samples += nread >> hwshift;
1.1.1.9 root 791: hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift);
1.1.1.2 root 792: }
793:
794: if (bufs[i].len - nread) {
795: if (nread == -1) {
796: switch (errno) {
797: case EINTR:
798: case EAGAIN:
799: break;
800: default:
801: oss_logerr (
802: errno,
803: "Failed to read %d bytes of audio (to %p)\n",
804: bufs[i].len, p
805: );
806: break;
807: }
808: }
809: break;
810: }
811: }
812: }
813:
814: hw->wpos = (hw->wpos + read_samples) % hw->samples;
815: return read_samples;
816: }
817:
818: static int oss_read (SWVoiceIn *sw, void *buf, int size)
819: {
820: return audio_pcm_sw_read (sw, buf, size);
821: }
822:
823: static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...)
824: {
1.1.1.7 root 825: OSSVoiceIn *oss = (OSSVoiceIn *) hw;
826:
827: switch (cmd) {
828: case VOICE_ENABLE:
829: {
830: va_list ap;
831: int poll_mode;
832:
833: va_start (ap, cmd);
834: poll_mode = va_arg (ap, int);
835: va_end (ap);
836:
837: if (poll_mode && oss_poll_in (hw)) {
838: poll_mode = 0;
839: }
840: hw->poll_mode = poll_mode;
841: }
842: break;
843:
844: case VOICE_DISABLE:
845: if (hw->poll_mode) {
846: hw->poll_mode = 0;
847: qemu_set_fd_handler (oss->fd, NULL, NULL, NULL);
848: }
849: break;
850: }
1.1.1.2 root 851: return 0;
852: }
853:
1.1 root 854: static void *oss_audio_init (void)
855: {
856: return &conf;
857: }
858:
859: static void oss_audio_fini (void *opaque)
860: {
1.1.1.2 root 861: (void) opaque;
1.1 root 862: }
863:
1.1.1.2 root 864: static struct audio_option oss_options[] = {
1.1.1.7 root 865: {
866: .name = "FRAGSIZE",
867: .tag = AUD_OPT_INT,
868: .valp = &conf.fragsize,
869: .descr = "Fragment size in bytes"
870: },
871: {
872: .name = "NFRAGS",
873: .tag = AUD_OPT_INT,
874: .valp = &conf.nfrags,
875: .descr = "Number of fragments"
876: },
877: {
878: .name = "MMAP",
879: .tag = AUD_OPT_BOOL,
880: .valp = &conf.try_mmap,
881: .descr = "Try using memory mapped access"
882: },
883: {
884: .name = "DAC_DEV",
885: .tag = AUD_OPT_STR,
886: .valp = &conf.devpath_out,
887: .descr = "Path to DAC device"
888: },
889: {
890: .name = "ADC_DEV",
891: .tag = AUD_OPT_STR,
892: .valp = &conf.devpath_in,
893: .descr = "Path to ADC device"
894: },
895: {
896: .name = "EXCLUSIVE",
897: .tag = AUD_OPT_BOOL,
898: .valp = &conf.exclusive,
899: .descr = "Open device in exclusive mode (vmix wont work)"
900: },
1.1.1.8 root 901: #ifdef USE_DSP_POLICY
1.1.1.7 root 902: {
903: .name = "POLICY",
904: .tag = AUD_OPT_INT,
905: .valp = &conf.policy,
906: .descr = "Set the timing policy of the device, -1 to use fragment mode",
907: },
908: #endif
909: {
910: .name = "DEBUG",
911: .tag = AUD_OPT_BOOL,
912: .valp = &conf.debug,
913: .descr = "Turn on some debugging messages"
914: },
915: { /* End of list */ }
1.1.1.2 root 916: };
917:
918: static struct audio_pcm_ops oss_pcm_ops = {
1.1.1.7 root 919: .init_out = oss_init_out,
920: .fini_out = oss_fini_out,
921: .run_out = oss_run_out,
922: .write = oss_write,
923: .ctl_out = oss_ctl_out,
924:
925: .init_in = oss_init_in,
926: .fini_in = oss_fini_in,
927: .run_in = oss_run_in,
928: .read = oss_read,
929: .ctl_in = oss_ctl_in
1.1 root 930: };
931:
1.1.1.2 root 932: struct audio_driver oss_audio_driver = {
1.1.1.7 root 933: .name = "oss",
934: .descr = "OSS http://www.opensound.com",
935: .options = oss_options,
936: .init = oss_audio_init,
937: .fini = oss_audio_fini,
938: .pcm_ops = &oss_pcm_ops,
939: .can_be_default = 1,
940: .max_voices_out = INT_MAX,
941: .max_voices_in = INT_MAX,
942: .voice_size_out = sizeof (OSSVoiceOut),
943: .voice_size_in = sizeof (OSSVoiceIn)
1.1 root 944: };
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