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This commit is contained in:
Greg Ward 2002-12-30 03:02:22 +00:00
parent e70376646e
commit ad4d9b9749
1 changed files with 106 additions and 106 deletions
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212
Modules/ossaudiodev.c
View file

@ -56,7 +56,7 @@ typedef struct {
typedef struct {
PyObject_HEAD;
int fd; /* The open mixer device */
int fd; /* The open mixer device */
} oss_mixer_t;
/* XXX several format defined in soundcard.h are not supported,
@ -64,19 +64,19 @@ typedef struct {
*/
static struct {
int a_bps;
uint32_t a_fmt;
int a_bps;
uint32_t a_fmt;
char *a_name;
} audio_types[] = {
{ 8, AFMT_MU_LAW, "logarithmic mu-law 8-bit audio" },
{ 8, AFMT_A_LAW, "logarithmic A-law 8-bit audio" },
{ 8, AFMT_U8, "linear unsigned 8-bit audio" },
{ 8, AFMT_S8, "linear signed 8-bit audio" },
{ 16, AFMT_U16_BE, "linear unsigned 16-bit big-endian audio" },
{ 16, AFMT_U16_LE, "linear unsigned 16-bit little-endian audio" },
{ 16, AFMT_S16_BE, "linear signed 16-bit big-endian audio" },
{ 16, AFMT_S16_LE, "linear signed 16-bit little-endian audio" },
{ 16, AFMT_S16_NE, "linear signed 16-bit native-endian audio" },
{ 8, AFMT_MU_LAW, "logarithmic mu-law 8-bit audio" },
{ 8, AFMT_A_LAW, "logarithmic A-law 8-bit audio" },
{ 8, AFMT_U8, "linear unsigned 8-bit audio" },
{ 8, AFMT_S8, "linear signed 8-bit audio" },
{ 16, AFMT_U16_BE, "linear unsigned 16-bit big-endian audio" },
{ 16, AFMT_U16_LE, "linear unsigned 16-bit little-endian audio" },
{ 16, AFMT_S16_BE, "linear signed 16-bit big-endian audio" },
{ 16, AFMT_S16_LE, "linear signed 16-bit little-endian audio" },
{ 16, AFMT_S16_NE, "linear signed 16-bit native-endian audio" },
};
static int n_audio_types = sizeof(audio_types) / sizeof(audio_types[0]);
@ -150,7 +150,7 @@ oss_dealloc(oss_t *xp)
{
/* if already closed, don't reclose it */
if (xp->fd != -1)
close(xp->fd);
close(xp->fd);
PyObject_Del(xp);
}
@ -162,13 +162,13 @@ newossmixerobject(PyObject *arg)
oss_mixer_t *xp;
if (!PyArg_ParseTuple(arg, "|ss", &basedev, &mode)) {
return NULL;
return NULL;
}
if (basedev == NULL) {
basedev = getenv("MIXERDEV");
if (basedev == NULL) /* MIXERDEV not set */
basedev = "/dev/mixer";
basedev = getenv("MIXERDEV");
if (basedev == NULL) /* MIXERDEV not set */
basedev = "/dev/mixer";
}
if (mode == NULL || strcmp(mode, "r") == 0)
@ -202,7 +202,7 @@ oss_mixer_dealloc(oss_mixer_t *xp)
{
/* if already closed, don't reclose it */
if (xp->fd != -1)
close(xp->fd);
close(xp->fd);
PyObject_Del(xp);
}
@ -233,7 +233,7 @@ _do_ioctl_1(int fd, PyObject *args, char *fname, int cmd)
assert(strlen(fname) <= 30);
strcat(argfmt, fname);
if (!PyArg_ParseTuple(args, argfmt, &arg))
return NULL;
return NULL;
if (ioctl(fd, cmd, &arg) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
@ -258,7 +258,7 @@ _do_ioctl_1_internal(int fd, PyObject *args, char *fname, int cmd)
assert(strlen(fname) <= 30);
strcat(argfmt, fname);
if (!PyArg_ParseTuple(args, argfmt, &arg))
return NULL;
return NULL;
if (ioctl(fd, cmd, &arg) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
@ -277,7 +277,7 @@ _do_ioctl_0(int fd, PyObject *args, char *fname, int cmd)
assert(strlen(fname) <= 30);
strcat(argfmt, fname);
if (!PyArg_ParseTuple(args, argfmt))
return NULL;
return NULL;
if (ioctl(fd, cmd, 0) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
@ -292,7 +292,7 @@ oss_nonblock(oss_t *self, PyObject *args)
/* Hmmm: it doesn't appear to be possible to return to blocking
mode once we're in non-blocking mode! */
if (!PyArg_ParseTuple(args, ":nonblock"))
return NULL;
return NULL;
if (ioctl(self->fd, SNDCTL_DSP_NONBLOCK, NULL) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
Py_INCREF(Py_None);
@ -310,7 +310,7 @@ oss_getfmts(oss_t *self, PyObject *args)
{
int mask;
if (!PyArg_ParseTuple(args, ":getfmts"))
return NULL;
return NULL;
if (ioctl(self->fd, SNDCTL_DSP_GETFMTS, &mask) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
return PyInt_FromLong(mask);
@ -356,7 +356,7 @@ oss_read(oss_t *self, PyObject *args)
int size, count;
char *cp;
PyObject *rv;
if (!PyArg_ParseTuple(args, "i:read", &size))
return NULL;
rv = PyString_FromStringAndSize(NULL, size);
@ -380,7 +380,7 @@ oss_write(oss_t *self, PyObject *args)
int rv, size;
if (!PyArg_ParseTuple(args, "s#:write", &cp, &size)) {
return NULL;
return NULL;
}
if ((rv = write(self->fd, cp, size)) == -1) {
return PyErr_SetFromErrno(PyExc_IOError);
@ -439,7 +439,7 @@ static PyObject *
oss_close(oss_t *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":close"))
return NULL;
return NULL;
if (self->fd >= 0) {
close(self->fd);
@ -453,7 +453,7 @@ static PyObject *
oss_fileno(oss_t *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":fileno"))
return NULL;
return NULL;
return PyInt_FromLong(self->fd);
}
@ -471,45 +471,45 @@ oss_setparameters(oss_t *self, PyObject *args)
return NULL;
if (rate < 0) {
PyErr_Format(PyExc_ValueError, "expected rate >= 0, not %d",
rate);
return NULL;
PyErr_Format(PyExc_ValueError, "expected rate >= 0, not %d",
rate);
return NULL;
}
if (ssize < 0) {
PyErr_Format(PyExc_ValueError, "expected sample size >= 0, not %d",
ssize);
return NULL;
PyErr_Format(PyExc_ValueError, "expected sample size >= 0, not %d",
ssize);
return NULL;
}
if (nchannels != 1 && nchannels != 2) {
PyErr_Format(PyExc_ValueError, "nchannels must be 1 or 2, not %d",
nchannels);
return NULL;
PyErr_Format(PyExc_ValueError, "nchannels must be 1 or 2, not %d",
nchannels);
return NULL;
}
for (n = 0; n < n_audio_types; n++)
if (fmt == audio_types[n].a_fmt)
break;
if (n == n_audio_types) {
PyErr_Format(PyExc_ValueError, "unknown audio encoding: %d", fmt);
return NULL;
PyErr_Format(PyExc_ValueError, "unknown audio encoding: %d", fmt);
return NULL;
}
if (audio_types[n].a_bps != ssize) {
PyErr_Format(PyExc_ValueError,
"for %s, expected sample size %d, not %d",
audio_types[n].a_name, audio_types[n].a_bps, ssize);
return NULL;
PyErr_Format(PyExc_ValueError,
"for %s, expected sample size %d, not %d",
audio_types[n].a_name, audio_types[n].a_bps, ssize);
return NULL;
}
if (emulate == 0) {
if ((self->afmts & audio_types[n].a_fmt) == 0) {
PyErr_Format(PyExc_ValueError,
"%s format not supported by device",
audio_types[n].a_name);
return NULL;
}
if ((self->afmts & audio_types[n].a_fmt) == 0) {
PyErr_Format(PyExc_ValueError,
"%s format not supported by device",
audio_types[n].a_name);
return NULL;
}
}
if (ioctl(self->fd, SNDCTL_DSP_SETFMT,
&audio_types[n].a_fmt) == -1) {
&audio_types[n].a_fmt) == -1) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
@ -633,12 +633,12 @@ oss_getptr(oss_t *self, PyObject *args)
int req;
if (!PyArg_ParseTuple(args, ":getptr"))
return NULL;
return NULL;
if (self->mode == O_RDONLY)
req = SNDCTL_DSP_GETIPTR;
req = SNDCTL_DSP_GETIPTR;
else
req = SNDCTL_DSP_GETOPTR;
req = SNDCTL_DSP_GETOPTR;
if (ioctl(self->fd, req, &info) == -1) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
@ -651,7 +651,7 @@ static PyObject *
oss_mixer_close(oss_mixer_t *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":close"))
return NULL;
return NULL;
if (self->fd >= 0) {
close(self->fd);
@ -665,7 +665,7 @@ static PyObject *
oss_mixer_fileno(oss_mixer_t *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":fileno"))
return NULL;
return NULL;
return PyInt_FromLong(self->fd);
}
@ -699,15 +699,15 @@ oss_mixer_get(oss_mixer_t *self, PyObject *args)
/* Can't use _do_ioctl_1 because of encoded arg thingy. */
if (!PyArg_ParseTuple(args, "i:get", &channel))
return NULL;
return NULL;
if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
return NULL;
PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
return NULL;
}
if (ioctl(self->fd, MIXER_READ(channel), &volume) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
return PyErr_SetFromErrno(PyExc_IOError);
return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
}
@ -719,22 +719,22 @@ oss_mixer_set(oss_mixer_t *self, PyObject *args)
/* Can't use _do_ioctl_1 because of encoded arg thingy. */
if (!PyArg_ParseTuple(args, "i(ii):set", &channel, &leftVol, &rightVol))
return NULL;
return NULL;
if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
return NULL;
PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
return NULL;
}
if (leftVol < 0 || rightVol < 0 || leftVol > 100 || rightVol > 100) {
PyErr_SetString(OSSAudioError, "Volumes must be between 0 and 100.");
return NULL;
PyErr_SetString(OSSAudioError, "Volumes must be between 0 and 100.");
return NULL;
}
volume = (rightVol << 8) | leftVol;
if (ioctl(self->fd, MIXER_WRITE(channel), &volume) == -1)
return PyErr_SetFromErrno(PyExc_IOError);
return PyErr_SetFromErrno(PyExc_IOError);
return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
}
@ -756,50 +756,50 @@ oss_mixer_setrecsrc(oss_mixer_t *self, PyObject *args)
static PyMethodDef oss_methods[] = {
/* Regular file methods */
{ "read", (PyCFunction)oss_read, METH_VARARGS },
{ "write", (PyCFunction)oss_write, METH_VARARGS },
{ "writeall", (PyCFunction)oss_writeall, METH_VARARGS },
{ "close", (PyCFunction)oss_close, METH_VARARGS },
{ "fileno", (PyCFunction)oss_fileno, METH_VARARGS },
{ "read", (PyCFunction)oss_read, METH_VARARGS },
{ "write", (PyCFunction)oss_write, METH_VARARGS },
{ "writeall", (PyCFunction)oss_writeall, METH_VARARGS },
{ "close", (PyCFunction)oss_close, METH_VARARGS },
{ "fileno", (PyCFunction)oss_fileno, METH_VARARGS },
/* Simple ioctl wrappers */
{ "nonblock", (PyCFunction)oss_nonblock, METH_VARARGS },
{ "setfmt", (PyCFunction)oss_setfmt, METH_VARARGS },
{ "setfmt", (PyCFunction)oss_setfmt, METH_VARARGS },
{ "getfmts", (PyCFunction)oss_getfmts, METH_VARARGS },
{ "channels", (PyCFunction)oss_channels, METH_VARARGS },
{ "speed", (PyCFunction)oss_speed, METH_VARARGS },
{ "sync", (PyCFunction)oss_sync, METH_VARARGS },
{ "reset", (PyCFunction)oss_reset, METH_VARARGS },
{ "post", (PyCFunction)oss_post, METH_VARARGS },
{ "sync", (PyCFunction)oss_sync, METH_VARARGS },
{ "reset", (PyCFunction)oss_reset, METH_VARARGS },
{ "post", (PyCFunction)oss_post, METH_VARARGS },
/* Convenience methods -- wrap a couple of ioctls together */
{ "setparameters", (PyCFunction)oss_setparameters, METH_VARARGS },
{ "bufsize", (PyCFunction)oss_bufsize, METH_VARARGS },
{ "obufcount", (PyCFunction)oss_obufcount, METH_VARARGS },
{ "obuffree", (PyCFunction)oss_obuffree, METH_VARARGS },
{ "setparameters", (PyCFunction)oss_setparameters, METH_VARARGS },
{ "bufsize", (PyCFunction)oss_bufsize, METH_VARARGS },
{ "obufcount", (PyCFunction)oss_obufcount, METH_VARARGS },
{ "obuffree", (PyCFunction)oss_obuffree, METH_VARARGS },
{ "getptr", (PyCFunction)oss_getptr, METH_VARARGS },
/* Aliases for backwards compatibility */
{ "flush", (PyCFunction)oss_sync, METH_VARARGS },
{ "flush", (PyCFunction)oss_sync, METH_VARARGS },
{ NULL, NULL} /* sentinel */
{ NULL, NULL} /* sentinel */
};
static PyMethodDef oss_mixer_methods[] = {
/* Regular file method - OSS mixers are ioctl-only interface */
{ "close", (PyCFunction)oss_mixer_close, METH_VARARGS },
{ "fileno", (PyCFunction)oss_mixer_fileno, METH_VARARGS },
{ "close", (PyCFunction)oss_mixer_close, METH_VARARGS },
{ "fileno", (PyCFunction)oss_mixer_fileno, METH_VARARGS },
/* Simple ioctl wrappers */
{ "devices", (PyCFunction)oss_mixer_devices, METH_VARARGS },
{ "devices", (PyCFunction)oss_mixer_devices, METH_VARARGS },
{ "stereodevices", (PyCFunction)oss_mixer_stereodevices, METH_VARARGS},
{ "recdevices", (PyCFunction)oss_mixer_recdevices, METH_VARARGS},
{ "get", (PyCFunction)oss_mixer_get, METH_VARARGS },
{ "set", (PyCFunction)oss_mixer_set, METH_VARARGS },
{ "getrecsrc", (PyCFunction)oss_mixer_getrecsrc, METH_VARARGS },
{ "setrecsrc", (PyCFunction)oss_mixer_setrecsrc, METH_VARARGS },
{ "get", (PyCFunction)oss_mixer_get, METH_VARARGS },
{ "set", (PyCFunction)oss_mixer_set, METH_VARARGS },
{ "getrecsrc", (PyCFunction)oss_mixer_getrecsrc, METH_VARARGS },
{ "setrecsrc", (PyCFunction)oss_mixer_setrecsrc, METH_VARARGS },
{ NULL, NULL}
{ NULL, NULL}
};
static PyObject *
@ -816,32 +816,32 @@ oss_mixer_getattr(oss_mixer_t *xp, char *name)
static PyTypeObject OSSType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
0, /*ob_size*/
"ossaudiodev.oss_audio_device", /*tp_name*/
sizeof(oss_t), /*tp_size*/
0, /*tp_itemsize*/
sizeof(oss_t), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)oss_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)oss_getattr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
(destructor)oss_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)oss_getattr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
};
static PyTypeObject OSSMixerType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
0, /*ob_size*/
"ossaudiodev.oss_mixer_device", /*tp_name*/
sizeof(oss_mixer_t), /*tp_size*/
0, /*tp_itemsize*/
sizeof(oss_mixer_t), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)oss_mixer_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_print*/
(getattrfunc)oss_mixer_getattr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
};
@ -876,7 +876,7 @@ initossaudiodev(void)
OSSAudioError = PyErr_NewException("ossaudiodev.error", NULL, NULL);
if (OSSAudioError)
PyModule_AddObject(m, "error", OSSAudioError);
PyModule_AddObject(m, "error", OSSAudioError);
/* Expose the audio format numbers -- essential! */
_EXPORT_INT(m, AFMT_QUERY);
@ -892,7 +892,7 @@ initossaudiodev(void)
_EXPORT_INT(m, AFMT_MPEG);
_EXPORT_INT(m, AFMT_AC3);
_EXPORT_INT(m, AFMT_S16_NE);
/* Expose the sound mixer device numbers. */
_EXPORT_INT(m, SOUND_MIXER_NRDEVICES);
_EXPORT_INT(m, SOUND_MIXER_VOLUME);