| /* |
| * QEMU OSS audio driver |
| * |
| * Copyright (c) 2003-2005 Vassili Karpov (malc) |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include <sys/mman.h> |
| #include <sys/types.h> |
| #include <sys/ioctl.h> |
| #include <sys/soundcard.h> |
| #include "vl.h" |
| |
| #define AUDIO_CAP "oss" |
| #include "audio_int.h" |
| |
| typedef struct OSSVoiceOut { |
| HWVoiceOut hw; |
| void *pcm_buf; |
| int fd; |
| int nfrags; |
| int fragsize; |
| int mmapped; |
| int old_optr; |
| } OSSVoiceOut; |
| |
| typedef struct OSSVoiceIn { |
| HWVoiceIn hw; |
| void *pcm_buf; |
| int fd; |
| int nfrags; |
| int fragsize; |
| int old_optr; |
| } OSSVoiceIn; |
| |
| static struct { |
| int try_mmap; |
| int nfrags; |
| int fragsize; |
| const char *devpath_out; |
| const char *devpath_in; |
| } conf = { |
| .try_mmap = 0, |
| .nfrags = 4, |
| .fragsize = 4096, |
| .devpath_out = "/dev/dsp", |
| .devpath_in = "/dev/dsp" |
| }; |
| |
| struct oss_params { |
| int freq; |
| audfmt_e fmt; |
| int nchannels; |
| int nfrags; |
| int fragsize; |
| }; |
| |
| static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...) |
| { |
| va_list ap; |
| |
| va_start (ap, fmt); |
| AUD_vlog (AUDIO_CAP, fmt, ap); |
| va_end (ap); |
| |
| AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); |
| } |
| |
| static void GCC_FMT_ATTR (3, 4) oss_logerr2 ( |
| int err, |
| const char *typ, |
| const char *fmt, |
| ... |
| ) |
| { |
| va_list ap; |
| |
| AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
| |
| va_start (ap, fmt); |
| AUD_vlog (AUDIO_CAP, fmt, ap); |
| va_end (ap); |
| |
| AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); |
| } |
| |
| static void oss_anal_close (int *fdp) |
| { |
| int err = close (*fdp); |
| if (err) { |
| oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp); |
| } |
| *fdp = -1; |
| } |
| |
| static int oss_write (SWVoiceOut *sw, void *buf, int len) |
| { |
| return audio_pcm_sw_write (sw, buf, len); |
| } |
| |
| static int aud_to_ossfmt (audfmt_e fmt) |
| { |
| switch (fmt) { |
| case AUD_FMT_S8: |
| return AFMT_S8; |
| |
| case AUD_FMT_U8: |
| return AFMT_U8; |
| |
| case AUD_FMT_S16: |
| return AFMT_S16_LE; |
| |
| case AUD_FMT_U16: |
| return AFMT_U16_LE; |
| |
| default: |
| dolog ("Internal logic error: Bad audio format %d\n", fmt); |
| #ifdef DEBUG_AUDIO |
| abort (); |
| #endif |
| return AFMT_U8; |
| } |
| } |
| |
| static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness) |
| { |
| switch (ossfmt) { |
| case AFMT_S8: |
| *endianness =0; |
| *fmt = AUD_FMT_S8; |
| break; |
| |
| case AFMT_U8: |
| *endianness = 0; |
| *fmt = AUD_FMT_U8; |
| break; |
| |
| case AFMT_S16_LE: |
| *endianness = 0; |
| *fmt = AUD_FMT_S16; |
| break; |
| |
| case AFMT_U16_LE: |
| *endianness = 0; |
| *fmt = AUD_FMT_U16; |
| break; |
| |
| case AFMT_S16_BE: |
| *endianness = 1; |
| *fmt = AUD_FMT_S16; |
| break; |
| |
| case AFMT_U16_BE: |
| *endianness = 1; |
| *fmt = AUD_FMT_U16; |
| break; |
| |
| default: |
| dolog ("Unrecognized audio format %d\n", ossfmt); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| #if defined DEBUG_MISMATCHES || defined DEBUG |
| static void oss_dump_info (struct oss_params *req, struct oss_params *obt) |
| { |
| dolog ("parameter | requested value | obtained value\n"); |
| dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); |
| dolog ("channels | %10d | %10d\n", |
| req->nchannels, obt->nchannels); |
| dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); |
| dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags); |
| dolog ("fragsize | %10d | %10d\n", |
| req->fragsize, obt->fragsize); |
| } |
| #endif |
| |
| static int oss_open (int in, struct oss_params *req, |
| struct oss_params *obt, int *pfd) |
| { |
| int fd; |
| int mmmmssss; |
| audio_buf_info abinfo; |
| int fmt, freq, nchannels; |
| const char *dspname = in ? conf.devpath_in : conf.devpath_out; |
| const char *typ = in ? "ADC" : "DAC"; |
| |
| fd = open (dspname, (in ? O_RDONLY : O_WRONLY) | O_NONBLOCK); |
| if (-1 == fd) { |
| oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname); |
| return -1; |
| } |
| |
| freq = req->freq; |
| nchannels = req->nchannels; |
| fmt = req->fmt; |
| |
| if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) { |
| oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt); |
| goto err; |
| } |
| |
| if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) { |
| oss_logerr2 (errno, typ, "Failed to set number of channels %d\n", |
| req->nchannels); |
| goto err; |
| } |
| |
| if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) { |
| oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq); |
| goto err; |
| } |
| |
| if (ioctl (fd, SNDCTL_DSP_NONBLOCK)) { |
| oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n"); |
| goto err; |
| } |
| |
| mmmmssss = (req->nfrags << 16) | lsbindex (req->fragsize); |
| if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) { |
| oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", |
| req->nfrags, req->fragsize); |
| goto err; |
| } |
| |
| if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) { |
| oss_logerr2 (errno, typ, "Failed to get buffer length\n"); |
| goto err; |
| } |
| |
| obt->fmt = fmt; |
| obt->nchannels = nchannels; |
| obt->freq = freq; |
| obt->nfrags = abinfo.fragstotal; |
| obt->fragsize = abinfo.fragsize; |
| *pfd = fd; |
| |
| #ifdef DEBUG_MISMATCHES |
| if ((req->fmt != obt->fmt) || |
| (req->nchannels != obt->nchannels) || |
| (req->freq != obt->freq) || |
| (req->fragsize != obt->fragsize) || |
| (req->nfrags != obt->nfrags)) { |
| dolog ("Audio parameters mismatch\n"); |
| oss_dump_info (req, obt); |
| } |
| #endif |
| |
| #ifdef DEBUG |
| oss_dump_info (req, obt); |
| #endif |
| return 0; |
| |
| err: |
| oss_anal_close (&fd); |
| return -1; |
| } |
| |
| static int oss_run_out (HWVoiceOut *hw) |
| { |
| OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| int err, rpos, live, decr; |
| int samples; |
| uint8_t *dst; |
| st_sample_t *src; |
| struct audio_buf_info abinfo; |
| struct count_info cntinfo; |
| int bufsize; |
| |
| live = audio_pcm_hw_get_live_out (hw); |
| if (!live) { |
| return 0; |
| } |
| |
| bufsize = hw->samples << hw->info.shift; |
| |
| if (oss->mmapped) { |
| int bytes; |
| |
| err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); |
| if (err < 0) { |
| oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
| return 0; |
| } |
| |
| if (cntinfo.ptr == oss->old_optr) { |
| if (abs (hw->samples - live) < 64) { |
| dolog ("warning: Overrun\n"); |
| } |
| return 0; |
| } |
| |
| if (cntinfo.ptr > oss->old_optr) { |
| bytes = cntinfo.ptr - oss->old_optr; |
| } |
| else { |
| bytes = bufsize + cntinfo.ptr - oss->old_optr; |
| } |
| |
| decr = audio_MIN (bytes >> hw->info.shift, live); |
| } |
| else { |
| err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); |
| if (err < 0) { |
| oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
| return 0; |
| } |
| |
| if (abinfo.bytes < 0 || abinfo.bytes > bufsize) { |
| ldebug ("warning: Invalid available size, size=%d bufsize=%d\n", |
| abinfo.bytes, bufsize); |
| return 0; |
| } |
| |
| decr = audio_MIN (abinfo.bytes >> hw->info.shift, live); |
| if (!decr) { |
| return 0; |
| } |
| } |
| |
| samples = decr; |
| rpos = hw->rpos; |
| while (samples) { |
| int left_till_end_samples = hw->samples - rpos; |
| int convert_samples = audio_MIN (samples, left_till_end_samples); |
| |
| src = hw->mix_buf + rpos; |
| dst = advance (oss->pcm_buf, rpos << hw->info.shift); |
| |
| hw->clip (dst, src, convert_samples); |
| if (!oss->mmapped) { |
| int written; |
| |
| written = write (oss->fd, dst, convert_samples << hw->info.shift); |
| /* XXX: follow errno recommendations ? */ |
| if (written == -1) { |
| oss_logerr ( |
| errno, |
| "Failed to write %d bytes of audio data from %p\n", |
| convert_samples << hw->info.shift, |
| dst |
| ); |
| continue; |
| } |
| |
| if (written != convert_samples << hw->info.shift) { |
| int wsamples = written >> hw->info.shift; |
| int wbytes = wsamples << hw->info.shift; |
| if (wbytes != written) { |
| dolog ("warning: Misaligned write %d (requested %d), " |
| "alignment %d\n", |
| wbytes, written, hw->info.align + 1); |
| } |
| mixeng_clear (src, wsamples); |
| decr -= wsamples; |
| rpos = (rpos + wsamples) % hw->samples; |
| break; |
| } |
| } |
| |
| mixeng_clear (src, convert_samples); |
| |
| rpos = (rpos + convert_samples) % hw->samples; |
| samples -= convert_samples; |
| } |
| if (oss->mmapped) { |
| oss->old_optr = cntinfo.ptr; |
| } |
| |
| hw->rpos = rpos; |
| return decr; |
| } |
| |
| static void oss_fini_out (HWVoiceOut *hw) |
| { |
| int err; |
| OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| |
| ldebug ("oss_fini\n"); |
| oss_anal_close (&oss->fd); |
| |
| if (oss->pcm_buf) { |
| if (oss->mmapped) { |
| err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| if (err) { |
| oss_logerr (errno, "Failed to unmap buffer %p, size %d\n", |
| oss->pcm_buf, hw->samples << hw->info.shift); |
| } |
| } |
| else { |
| qemu_free (oss->pcm_buf); |
| } |
| oss->pcm_buf = NULL; |
| } |
| } |
| |
| static int oss_init_out (HWVoiceOut *hw, audsettings_t *as) |
| { |
| OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| struct oss_params req, obt; |
| int endianness; |
| int err; |
| int fd; |
| audfmt_e effective_fmt; |
| audsettings_t obt_as; |
| |
| oss->fd = -1; |
| |
| req.fmt = aud_to_ossfmt (as->fmt); |
| req.freq = as->freq; |
| req.nchannels = as->nchannels; |
| req.fragsize = conf.fragsize; |
| req.nfrags = conf.nfrags; |
| |
| if (oss_open (0, &req, &obt, &fd)) { |
| return -1; |
| } |
| |
| err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| if (err) { |
| oss_anal_close (&fd); |
| return -1; |
| } |
| |
| obt_as.freq = obt.freq; |
| obt_as.nchannels = obt.nchannels; |
| obt_as.fmt = effective_fmt; |
| |
| audio_pcm_init_info ( |
| &hw->info, |
| &obt_as, |
| audio_need_to_swap_endian (endianness) |
| ); |
| oss->nfrags = obt.nfrags; |
| oss->fragsize = obt.fragsize; |
| |
| if (obt.nfrags * obt.fragsize & hw->info.align) { |
| dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", |
| obt.nfrags * obt.fragsize, hw->info.align + 1); |
| } |
| |
| hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| |
| oss->mmapped = 0; |
| if (conf.try_mmap) { |
| oss->pcm_buf = mmap ( |
| 0, |
| hw->samples << hw->info.shift, |
| PROT_READ | PROT_WRITE, |
| MAP_SHARED, |
| fd, |
| 0 |
| ); |
| if (oss->pcm_buf == MAP_FAILED) { |
| oss_logerr (errno, "Failed to map %d bytes of DAC\n", |
| hw->samples << hw->info.shift); |
| } else { |
| int err; |
| int trig = 0; |
| if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); |
| } |
| else { |
| trig = PCM_ENABLE_OUTPUT; |
| if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| oss_logerr ( |
| errno, |
| "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" |
| ); |
| } |
| else { |
| oss->mmapped = 1; |
| } |
| } |
| |
| if (!oss->mmapped) { |
| err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| if (err) { |
| oss_logerr (errno, "Failed to unmap buffer %p size %d\n", |
| oss->pcm_buf, hw->samples << hw->info.shift); |
| } |
| } |
| } |
| } |
| |
| if (!oss->mmapped) { |
| oss->pcm_buf = audio_calloc ( |
| AUDIO_FUNC, |
| hw->samples, |
| 1 << hw->info.shift |
| ); |
| if (!oss->pcm_buf) { |
| dolog ( |
| "Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
| hw->samples, |
| 1 << hw->info.shift |
| ); |
| oss_anal_close (&fd); |
| return -1; |
| } |
| } |
| |
| oss->fd = fd; |
| return 0; |
| } |
| |
| static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...) |
| { |
| int trig; |
| OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| |
| if (!oss->mmapped) { |
| return 0; |
| } |
| |
| switch (cmd) { |
| case VOICE_ENABLE: |
| ldebug ("enabling voice\n"); |
| audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples); |
| trig = PCM_ENABLE_OUTPUT; |
| if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| oss_logerr ( |
| errno, |
| "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" |
| ); |
| return -1; |
| } |
| break; |
| |
| case VOICE_DISABLE: |
| ldebug ("disabling voice\n"); |
| trig = 0; |
| if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); |
| return -1; |
| } |
| break; |
| } |
| return 0; |
| } |
| |
| static int oss_init_in (HWVoiceIn *hw, audsettings_t *as) |
| { |
| OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| struct oss_params req, obt; |
| int endianness; |
| int err; |
| int fd; |
| audfmt_e effective_fmt; |
| audsettings_t obt_as; |
| |
| oss->fd = -1; |
| |
| req.fmt = aud_to_ossfmt (as->fmt); |
| req.freq = as->freq; |
| req.nchannels = as->nchannels; |
| req.fragsize = conf.fragsize; |
| req.nfrags = conf.nfrags; |
| if (oss_open (1, &req, &obt, &fd)) { |
| return -1; |
| } |
| |
| err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| if (err) { |
| oss_anal_close (&fd); |
| return -1; |
| } |
| |
| obt_as.freq = obt.freq; |
| obt_as.nchannels = obt.nchannels; |
| obt_as.fmt = effective_fmt; |
| |
| audio_pcm_init_info ( |
| &hw->info, |
| &obt_as, |
| audio_need_to_swap_endian (endianness) |
| ); |
| oss->nfrags = obt.nfrags; |
| oss->fragsize = obt.fragsize; |
| |
| if (obt.nfrags * obt.fragsize & hw->info.align) { |
| dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n", |
| obt.nfrags * obt.fragsize, hw->info.align + 1); |
| } |
| |
| hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); |
| if (!oss->pcm_buf) { |
| dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
| hw->samples, 1 << hw->info.shift); |
| oss_anal_close (&fd); |
| return -1; |
| } |
| |
| oss->fd = fd; |
| return 0; |
| } |
| |
| static void oss_fini_in (HWVoiceIn *hw) |
| { |
| OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| |
| oss_anal_close (&oss->fd); |
| |
| if (oss->pcm_buf) { |
| qemu_free (oss->pcm_buf); |
| oss->pcm_buf = NULL; |
| } |
| } |
| |
| static int oss_run_in (HWVoiceIn *hw) |
| { |
| OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| int hwshift = hw->info.shift; |
| int i; |
| int live = audio_pcm_hw_get_live_in (hw); |
| int dead = hw->samples - live; |
| size_t read_samples = 0; |
| struct { |
| int add; |
| int len; |
| } bufs[2] = { |
| { hw->wpos, 0 }, |
| { 0, 0 } |
| }; |
| |
| if (!dead) { |
| return 0; |
| } |
| |
| if (hw->wpos + dead > hw->samples) { |
| bufs[0].len = (hw->samples - hw->wpos) << hwshift; |
| bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift; |
| } |
| else { |
| bufs[0].len = dead << hwshift; |
| } |
| |
| |
| for (i = 0; i < 2; ++i) { |
| ssize_t nread; |
| |
| if (bufs[i].len) { |
| void *p = advance (oss->pcm_buf, bufs[i].add << hwshift); |
| nread = read (oss->fd, p, bufs[i].len); |
| |
| if (nread > 0) { |
| if (nread & hw->info.align) { |
| dolog ("warning: Misaligned read %zd (requested %d), " |
| "alignment %d\n", nread, bufs[i].add << hwshift, |
| hw->info.align + 1); |
| } |
| read_samples += nread >> hwshift; |
| hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift, |
| &nominal_volume); |
| } |
| |
| if (bufs[i].len - nread) { |
| if (nread == -1) { |
| switch (errno) { |
| case EINTR: |
| case EAGAIN: |
| break; |
| default: |
| oss_logerr ( |
| errno, |
| "Failed to read %d bytes of audio (to %p)\n", |
| bufs[i].len, p |
| ); |
| break; |
| } |
| } |
| break; |
| } |
| } |
| } |
| |
| hw->wpos = (hw->wpos + read_samples) % hw->samples; |
| return read_samples; |
| } |
| |
| static int oss_read (SWVoiceIn *sw, void *buf, int size) |
| { |
| return audio_pcm_sw_read (sw, buf, size); |
| } |
| |
| static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) |
| { |
| (void) hw; |
| (void) cmd; |
| return 0; |
| } |
| |
| static void *oss_audio_init (void) |
| { |
| return &conf; |
| } |
| |
| static void oss_audio_fini (void *opaque) |
| { |
| (void) opaque; |
| } |
| |
| static struct audio_option oss_options[] = { |
| {"FRAGSIZE", AUD_OPT_INT, &conf.fragsize, |
| "Fragment size in bytes", NULL, 0}, |
| {"NFRAGS", AUD_OPT_INT, &conf.nfrags, |
| "Number of fragments", NULL, 0}, |
| {"MMAP", AUD_OPT_BOOL, &conf.try_mmap, |
| "Try using memory mapped access", NULL, 0}, |
| {"DAC_DEV", AUD_OPT_STR, &conf.devpath_out, |
| "Path to DAC device", NULL, 0}, |
| {"ADC_DEV", AUD_OPT_STR, &conf.devpath_in, |
| "Path to ADC device", NULL, 0}, |
| {NULL, 0, NULL, NULL, NULL, 0} |
| }; |
| |
| static struct audio_pcm_ops oss_pcm_ops = { |
| oss_init_out, |
| oss_fini_out, |
| oss_run_out, |
| oss_write, |
| oss_ctl_out, |
| |
| oss_init_in, |
| oss_fini_in, |
| oss_run_in, |
| oss_read, |
| oss_ctl_in |
| }; |
| |
| struct audio_driver oss_audio_driver = { |
| INIT_FIELD (name = ) "oss", |
| INIT_FIELD (descr = ) "OSS http://www.opensound.com", |
| INIT_FIELD (options = ) oss_options, |
| INIT_FIELD (init = ) oss_audio_init, |
| INIT_FIELD (fini = ) oss_audio_fini, |
| INIT_FIELD (pcm_ops = ) &oss_pcm_ops, |
| INIT_FIELD (can_be_default = ) 1, |
| INIT_FIELD (max_voices_out = ) INT_MAX, |
| INIT_FIELD (max_voices_in = ) INT_MAX, |
| INIT_FIELD (voice_size_out = ) sizeof (OSSVoiceOut), |
| INIT_FIELD (voice_size_in = ) sizeof (OSSVoiceIn) |
| }; |