/*
- * QEMU OSS audio output driver
- *
- * Copyright (c) 2003-2004 Vassili Karpov (malc)
- *
+ * 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
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
-#include <assert.h>
#include "vl.h"
-#include "audio/audio_int.h"
+#define AUDIO_CAP "oss"
+#include "audio_int.h"
-typedef struct OSSVoice {
- HWVoice hw;
+typedef struct OSSVoiceOut {
+ HWVoiceOut hw;
void *pcm_buf;
int fd;
int nfrags;
int fragsize;
int mmapped;
int old_optr;
-} OSSVoice;
-
-#define dolog(...) AUD_log ("oss", __VA_ARGS__)
-#ifdef DEBUG
-#define ldebug(...) dolog (__VA_ARGS__)
-#else
-#define ldebug(...)
-#endif
+} OSSVoiceOut;
-#define QC_OSS_FRAGSIZE "QEMU_OSS_FRAGSIZE"
-#define QC_OSS_NFRAGS "QEMU_OSS_NFRAGS"
-#define QC_OSS_MMAP "QEMU_OSS_MMAP"
-#define QC_OSS_DEV "QEMU_OSS_DEV"
-
-#define errstr() strerror (errno)
+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 *dspname;
+ const char *devpath_out;
+ const char *devpath_in;
} conf = {
.try_mmap = 0,
.nfrags = 4,
.fragsize = 4096,
- .dspname = "/dev/dsp"
+ .devpath_out = "/dev/dsp",
+ .devpath_in = "/dev/dsp"
};
struct oss_params {
int fragsize;
};
-static int oss_hw_write (SWVoice *sw, void *buf, int len)
+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 pcm_hw_write (sw, buf, len);
+ return audio_pcm_sw_write (sw, buf, len);
}
-static int AUD_to_ossfmt (audfmt_e fmt)
+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;
+ 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\nAborting\n", fmt);
- exit (EXIT_FAILURE);
+ dolog ("Internal logic error: Bad audio format %d\n", fmt);
+#ifdef DEBUG_AUDIO
+ abort ();
+#endif
+ return AFMT_U8;
}
}
-static int oss_to_audfmt (int fmt)
+static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness)
{
- switch (fmt) {
- case AFMT_S8: return AUD_FMT_S8;
- case AFMT_U8: return AUD_FMT_U8;
- case AFMT_S16_LE: return AUD_FMT_S16;
- case AFMT_U16_LE: return AUD_FMT_U16;
+ 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 ("Internal logic error: Unrecognized OSS audio format %d\n"
- "Aborting\n",
- fmt);
- exit (EXIT_FAILURE);
+ dolog ("Unrecognized audio format %d\n", ossfmt);
+ return -1;
}
+
+ return 0;
}
-#ifdef DEBUG_PCM
-static void oss_dump_pcm_info (struct oss_params *req, struct oss_params *obt)
+#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 ("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);
+ dolog ("fragsize | %10d | %10d\n",
+ req->fragsize, obt->fragsize);
}
#endif
-static int oss_open (struct oss_params *req, struct oss_params *obt, int *pfd)
+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 = conf.dspname;
+ const char *dspname = in ? conf.devpath_in : conf.devpath_out;
+ const char *typ = in ? "ADC" : "DAC";
- fd = open (dspname, O_WRONLY | O_NONBLOCK);
+ fd = open (dspname, (in ? O_RDONLY : O_WRONLY) | O_NONBLOCK);
if (-1 == fd) {
- dolog ("Could not initialize audio hardware. Failed to open `%s':\n"
- "Reason:%s\n",
- dspname,
- errstr ());
+ oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname);
return -1;
}
fmt = req->fmt;
if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to set sample size\n"
- "Reason: %s\n",
- errstr ());
+ oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt);
goto err;
}
if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to set number of channels\n"
- "Reason: %s\n",
- errstr ());
+ oss_logerr2 (errno, typ, "Failed to set number of channels %d\n",
+ req->nchannels);
goto err;
}
if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to set frequency\n"
- "Reason: %s\n",
- errstr ());
+ oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq);
goto err;
}
if (ioctl (fd, SNDCTL_DSP_NONBLOCK)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to set non-blocking mode\n"
- "Reason: %s\n",
- errstr ());
+ 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)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to set buffer length (%d, %d)\n"
- "Reason:%s\n",
- conf.nfrags, conf.fragsize,
- errstr ());
+ oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n",
+ req->nfrags, req->fragsize);
goto err;
}
- if (ioctl (fd, SNDCTL_DSP_GETOSPACE, &abinfo)) {
- dolog ("Could not initialize audio hardware\n"
- "Failed to get buffer length\n"
- "Reason:%s\n",
- errstr ());
+ if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) {
+ oss_logerr2 (errno, typ, "Failed to get buffer length\n");
goto err;
}
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)) {
-#ifdef DEBUG_PCM
dolog ("Audio parameters mismatch\n");
- oss_dump_pcm_info (req, obt);
-#endif
+ oss_dump_info (req, obt);
}
+#endif
-#ifdef DEBUG_PCM
- oss_dump_pcm_info (req, obt);
+#ifdef DEBUG
+ oss_dump_info (req, obt);
#endif
return 0;
-err:
- close (fd);
+ err:
+ oss_anal_close (&fd);
return -1;
}
-static void oss_hw_run (HWVoice *hw)
+static int oss_run_out (HWVoiceOut *hw)
{
- OSSVoice *oss = (OSSVoice *) 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;
+ }
- live = pcm_hw_get_live (hw);
- if (live <= 0)
- return;
+ bufsize = hw->samples << hw->info.shift;
if (oss->mmapped) {
int bytes;
err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo);
if (err < 0) {
- dolog ("SNDCTL_DSP_GETOPTR failed\nReason: %s\n", errstr ());
- return;
+ oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n");
+ return 0;
}
if (cntinfo.ptr == oss->old_optr) {
- if (abs (hw->samples - live) < 64)
- dolog ("overrun\n");
- return;
+ 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 = hw->bufsize + cntinfo.ptr - oss->old_optr;
+ bytes = bufsize + cntinfo.ptr - oss->old_optr;
}
- decr = audio_MIN (bytes >> hw->shift, live);
+ decr = audio_MIN (bytes >> hw->info.shift, live);
}
else {
err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo);
if (err < 0) {
- dolog ("SNDCTL_DSP_GETOSPACE failed\nReason: %s\n", errstr ());
- return;
+ 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->shift, live);
- if (decr <= 0)
- return;
+ decr = audio_MIN (abinfo.bytes >> hw->info.shift, live);
+ if (!decr) {
+ return 0;
+ }
}
samples = decr;
int left_till_end_samples = hw->samples - rpos;
int convert_samples = audio_MIN (samples, left_till_end_samples);
- src = advance (hw->mix_buf, rpos * sizeof (st_sample_t));
- dst = advance (oss->pcm_buf, rpos << hw->shift);
+ 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->shift);
+ written = write (oss->fd, dst, convert_samples << hw->info.shift);
/* XXX: follow errno recommendations ? */
if (written == -1) {
- dolog ("Failed to write audio\nReason: %s\n", errstr ());
+ 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->shift) {
- int wsamples = written >> hw->shift;
- int wbytes = wsamples << hw->shift;
+ if (written != convert_samples << hw->info.shift) {
+ int wsamples = written >> hw->info.shift;
+ int wbytes = wsamples << hw->info.shift;
if (wbytes != written) {
- dolog ("Unaligned write %d, %d\n", wbytes, written);
+ dolog ("warning: Misaligned write %d (requested %d), "
+ "alignment %d\n",
+ wbytes, written, hw->info.align + 1);
}
- memset (src, 0, wbytes);
- decr -= samples;
+ mixeng_clear (src, wsamples);
+ decr -= wsamples;
rpos = (rpos + wsamples) % hw->samples;
break;
}
}
- memset (src, 0, convert_samples * sizeof (st_sample_t));
+
+ mixeng_clear (src, convert_samples);
rpos = (rpos + convert_samples) % hw->samples;
samples -= convert_samples;
oss->old_optr = cntinfo.ptr;
}
- pcm_hw_dec_live (hw, decr);
hw->rpos = rpos;
+ return decr;
}
-static void oss_hw_fini (HWVoice *hw)
+static void oss_fini_out (HWVoiceOut *hw)
{
int err;
- OSSVoice *oss = (OSSVoice *) hw;
+ OSSVoiceOut *oss = (OSSVoiceOut *) hw;
- ldebug ("oss_hw_fini\n");
- err = close (oss->fd);
- if (err) {
- dolog ("Failed to close OSS descriptor\nReason: %s\n", errstr ());
- }
- oss->fd = -1;
+ ldebug ("oss_fini\n");
+ oss_anal_close (&oss->fd);
if (oss->pcm_buf) {
if (oss->mmapped) {
- err = munmap (oss->pcm_buf, hw->bufsize);
+ err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
if (err) {
- dolog ("Failed to unmap OSS buffer\nReason: %s\n",
- errstr ());
+ oss_logerr (errno, "Failed to unmap buffer %p, size %d\n",
+ oss->pcm_buf, hw->samples << hw->info.shift);
}
}
else {
}
}
-static int oss_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+static int oss_init_out (HWVoiceOut *hw, audsettings_t *as)
{
- OSSVoice *oss = (OSSVoice *) hw;
+ 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;
- assert (!oss->fd);
- req.fmt = AUD_to_ossfmt (fmt);
- req.freq = freq;
- req.nchannels = nchannels;
+ 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 (&req, &obt, &oss->fd))
+ if (oss_open (0, &req, &obt, &fd)) {
return -1;
+ }
- hw->freq = obt.freq;
- hw->fmt = oss_to_audfmt (obt.fmt);
- hw->nchannels = obt.nchannels;
+ 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;
- hw->bufsize = obt.nfrags * 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->bufsize, PROT_READ | PROT_WRITE,
- MAP_SHARED, oss->fd, 0);
+ oss->pcm_buf = mmap (
+ 0,
+ hw->samples << hw->info.shift,
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED,
+ fd,
+ 0
+ );
if (oss->pcm_buf == MAP_FAILED) {
- dolog ("Failed to mmap OSS device\nReason: %s\n",
- errstr ());
+ oss_logerr (errno, "Failed to map %d bytes of DAC\n",
+ hw->samples << hw->info.shift);
} else {
int err;
int trig = 0;
- if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
- dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason: %s\n",
- errstr ());
+ if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
+ oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n");
}
else {
trig = PCM_ENABLE_OUTPUT;
- if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
- dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
- "Reason: %s\n", errstr ());
+ 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->bufsize);
+ err = munmap (oss->pcm_buf, hw->samples << hw->info.shift);
if (err) {
- dolog ("Failed to unmap OSS device\nReason: %s\n",
- errstr ());
+ 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 = qemu_mallocz (hw->bufsize);
+ oss->pcm_buf = audio_calloc (
+ AUDIO_FUNC,
+ hw->samples,
+ 1 << hw->info.shift
+ );
if (!oss->pcm_buf) {
- close (oss->fd);
- oss->fd = -1;
+ 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_hw_ctl (HWVoice *hw, int cmd, ...)
+static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
int trig;
- OSSVoice *oss = (OSSVoice *) hw;
+ OSSVoiceOut *oss = (OSSVoiceOut *) hw;
- if (!oss->mmapped)
+ if (!oss->mmapped) {
return 0;
+ }
switch (cmd) {
case VOICE_ENABLE:
ldebug ("enabling voice\n");
- pcm_hw_clear (hw, oss->pcm_buf, hw->samples);
+ 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) {
- dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
- "Reason: %s\n", errstr ());
+ oss_logerr (
+ errno,
+ "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
+ );
return -1;
}
break;
ldebug ("disabling voice\n");
trig = 0;
if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
- dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason: %s\n",
- errstr ());
+ 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)
{
- conf.fragsize = audio_get_conf_int (QC_OSS_FRAGSIZE, conf.fragsize);
- conf.nfrags = audio_get_conf_int (QC_OSS_NFRAGS, conf.nfrags);
- conf.try_mmap = audio_get_conf_int (QC_OSS_MMAP, conf.try_mmap);
- conf.dspname = audio_get_conf_str (QC_OSS_DEV, conf.dspname);
return &conf;
}
static void oss_audio_fini (void *opaque)
{
+ (void) opaque;
}
-struct pcm_ops oss_pcm_ops = {
- oss_hw_init,
- oss_hw_fini,
- oss_hw_run,
- oss_hw_write,
- oss_hw_ctl
+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_output_driver oss_output_driver = {
- "oss",
- oss_audio_init,
- oss_audio_fini,
- &oss_pcm_ops,
- 1,
- INT_MAX,
- sizeof (OSSVoice)
+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)
};
projects / qemu / blobdiff