auracaster/sw_pyalsaaudio
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Add an PCM.info function returning the information now printed by dumpinfo as a dictionary. Removed double entry from dumpinfo.

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Ronald van Elburg
2020-10-27 12:41:59 +01:00
parent 0ae60f80f3
commit c8e7261e94
1 changed files with 159 additions and 3 deletions
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162
alsaaudio.c
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@@ -602,9 +602,6 @@ alsapcm_dumpinfo(alsapcm_t *self, PyObject *args)
val = snd_pcm_hw_params_get_sbits(hwparams);
printf("significant bits = %d\n", val);
snd_pcm_hw_params_get_period_time(hwparams, &val, &dir);
printf("period time = %d us\n", val);
val = snd_pcm_hw_params_is_batch(hwparams);
printf("is batch = %d\n", val);
@@ -639,6 +636,164 @@ alsapcm_dumpinfo(alsapcm_t *self, PyObject *args)
return Py_None;
}
static PyObject *
alsapcm_info(alsapcm_t *self, PyObject *args)
{
PyObject *info = PyDict_New();
PyObject *pname;
PyObject *value;
unsigned int val,val2;
snd_pcm_format_t fmt;
int dir;
snd_pcm_uframes_t frames;
snd_pcm_hw_params_t *hwparams;
snd_pcm_hw_params_alloca(&hwparams);
snd_pcm_hw_params_current(self->handle,hwparams);
if (!PyArg_ParseTuple(args,":dumpinfo"))
return NULL;
if (!self->handle) {
PyErr_SetString(ALSAAudioError, "PCM device is closed");
return NULL;
}
printf("PCM handle name = '%s'\n", snd_pcm_name(self->handle));
pname=PyUnicode_FromString("name");
value=PyUnicode_FromString(snd_pcm_name(self->handle));
PyDict_SetItem(info,pname,value);
pname=PyUnicode_FromString("state");
value=PyUnicode_FromString(snd_pcm_state_name(snd_pcm_state(self->handle)));
PyDict_SetItem(info,pname,value);
pname=PyUnicode_FromString("access_type");
snd_pcm_hw_params_get_access(hwparams, (snd_pcm_access_t *) &val);
value=PyUnicode_FromString(snd_pcm_access_name((snd_pcm_access_t)val));
PyDict_SetItem(info,pname,value);
snd_pcm_hw_params_get_format(hwparams, &fmt);
pname=PyUnicode_FromString("format_name");
value=PyUnicode_FromString(snd_pcm_format_name(fmt));
PyDict_SetItem(info,pname,value);
pname=PyUnicode_FromString("format_description");
value=PyUnicode_FromString(snd_pcm_format_description(fmt));
PyDict_SetItem(info,pname,value);
snd_pcm_hw_params_get_subformat(hwparams, (snd_pcm_subformat_t *)&val);
pname=PyUnicode_FromString("subformat_name");
value=PyUnicode_FromString(snd_pcm_subformat_name((snd_pcm_subformat_t)val));
PyDict_SetItem(info,pname,value);
pname=PyUnicode_FromString("subformat_description");
value=PyUnicode_FromString(snd_pcm_subformat_description((snd_pcm_subformat_t)val));
PyDict_SetItem(info,pname,value);
pname=PyUnicode_FromString("channels");
snd_pcm_hw_params_get_channels(hwparams, &val);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("rate");
snd_pcm_hw_params_get_rate(hwparams, &val, &dir);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("period_time");
snd_pcm_hw_params_get_period_time(hwparams, &val, &dir);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("period_size");
snd_pcm_hw_params_get_period_size(hwparams, &frames, &dir);
value=PyLong_FromUnsignedLong((unsigned long) frames);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("buffer_time");
snd_pcm_hw_params_get_buffer_time(hwparams, &val, &dir);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("buffer_size");
snd_pcm_hw_params_get_buffer_size(hwparams, (snd_pcm_uframes_t *) &val);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("get_periods");
snd_pcm_hw_params_get_periods(hwparams, &val, &dir);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("rate_numden");
snd_pcm_hw_params_get_rate_numden(hwparams, &val, &val2);
value=PyTuple_Pack(2,PyLong_FromUnsignedLong((unsigned long) val) \
,PyLong_FromUnsignedLong((unsigned long) val2));
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("significant_bits");
val = snd_pcm_hw_params_get_sbits(hwparams);
value=PyLong_FromUnsignedLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("is_batch");
val = snd_pcm_hw_params_is_batch(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("is_block_transfer");
val = snd_pcm_hw_params_is_block_transfer(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("is_double");
val = snd_pcm_hw_params_is_double(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("is_half_duplex");
val = snd_pcm_hw_params_is_half_duplex(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("is_joint_duplex");
val = snd_pcm_hw_params_is_joint_duplex(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("can_overrange");
val = snd_pcm_hw_params_can_overrange(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("can_mmap_sample_resolution");
val = snd_pcm_hw_params_can_mmap_sample_resolution(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("can_pause");
val = snd_pcm_hw_params_can_pause(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("can_resume");
val = snd_pcm_hw_params_can_resume(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
pname=PyUnicode_FromString("can_sync_start");
val = snd_pcm_hw_params_can_sync_start(hwparams);
value=PyBool_FromLong((unsigned long) val);
PyDict_SetItem(info,pname, value);
return info;
}
// auxiliary function
@@ -1371,6 +1526,7 @@ static PyMethodDef alsapcm_methods[] = {
{"setperiodsize", (PyCFunction)alsapcm_setperiodsize, METH_VARARGS,
setperiodsize_doc},
{"dumpinfo", (PyCFunction)alsapcm_dumpinfo, METH_VARARGS},
{"info", (PyCFunction)alsapcm_info, METH_VARARGS},
{"getformats", (PyCFunction)alsapcm_getformats, METH_VARARGS, getformats_doc},
{"getratebounds", (PyCFunction)alsapcm_getratemaxmin, METH_VARARGS, getratebounds_doc},
{"getrates", (PyCFunction)alsapcm_getrates, METH_VARARGS, getrates_doc},