/* obufcount returns the number of samples that can be played without
blocking */
static PyObject *
lad_obuffree(lad_t *self, PyObject *unused)
{
audio_buf_info ai;
int nchannels=0, ssize=0;
if (_ssize(self, &nchannels, &ssize) < 0 || !ssize || !nchannels) {
PyErr_SetFromErrno(LinuxAudioError);
return NULL;
}
if (ioctl(self->x_fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(LinuxAudioError);
return NULL;
}
return PyInt_FromLong(ai.bytes / (ssize * nchannels));
}
/* obufcount returns the number of samples that can be played without
blocking */
static PyObject *
oss_obuffree(oss_audio_t *self, PyObject *unused)
{
audio_buf_info ai;
int nchannels=0, ssize=0;
if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromLong(ai.bytes / (ssize * nchannels));
}
/* bufsize returns the size of the hardware audio buffer in number
of samples */
static PyObject *
oss_bufsize(oss_audio_t *self, PyObject *unused)
{
audio_buf_info ai;
int nchannels=0, ssize=0;
if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyInt_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));
}
/* bufsize returns the size of the hardware audio buffer in number
of samples */
static PyObject *
oss_bufsize(oss_audio_t *self, PyObject *args)
{
audio_buf_info ai;
int nchannels, ssize;
if (!PyArg_ParseTuple(args, ":bufsize")) return NULL;
if (_ssize(self, &nchannels, &ssize) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyInt_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));
}
/* obufcount returns the number of samples that can be played without
blocking */
static PyObject *
oss_obuffree(oss_audio_t *self, PyObject *args)
{
audio_buf_info ai;
int nchannels, ssize;
if (!PyArg_ParseTuple(args, ":obuffree"))
return NULL;
if (_ssize(self, &nchannels, &ssize) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyInt_FromLong(ai.bytes / (ssize * nchannels));
}
/* obufcount returns the number of samples that are available in the
hardware for playing */
static PyObject *
oss_obufcount(oss_audio_t *self, PyObject *unused)
{
audio_buf_info ai;
int nchannels=0, ssize=0;
if (!_is_fd_valid(self->fd))
return NULL;
if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromLong((ai.fragstotal * ai.fragsize - ai.bytes) /
(ssize * nchannels));
}