mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-29 05:40:25 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

implemented integer volume <-> dB volume conversion functions for simple mixer

Browse source
This commit is contained in:
Jaroslav Kysela 2008-04-21 11:44:20 +02:00
parent 82af1df465
commit 058dde8b7d
5 changed files with 139 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

48
modules/mixer/simple/python.c
View file

@ -204,7 +204,7 @@ static int set_range_ops(snd_mixer_elem_t *elem, int dir,
}
static int get_x_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, long *value,
long channel, long *value,
const char *attr)
{
PyObject *obj1, *res;
@ -251,6 +251,49 @@ static int get_switch_ops(snd_mixer_elem_t *elem, int dir,
return res;
}
static int ask_vol_dB_ops(snd_mixer_elem_t *elem,
int dir,
long value,
long *dbValue)
{
return get_x_ops(elem, dir, value, dbValue, "opsGetVolDB");
}
static int ask_dB_vol_ops(snd_mixer_elem_t *elem,
int dir,
long value,
long *dbValue,
int xdir)
{
PyObject *obj1, *res;
struct pymelem *pymelem = melem_to_pymelem(elem);
int err;
obj1 = PyTuple_New(3);
PyTuple_SET_ITEM(obj1, 0, PyInt_FromLong(dir));
PyTuple_SET_ITEM(obj1, 1, PyInt_FromLong(value));
PyTuple_SET_ITEM(obj1, 2, PyInt_FromLong(xdir));
err = pcall(pymelem, "opsGetDBVol", obj1, &res);
if (err >= 0) {
err = !PyInt_Check(PyTuple_GetItem(res, 1));
if (err) {
err = !PyLong_Check(PyTuple_GetItem(res, 1));
if (err) {
PyErr_Format(PyExc_TypeError, "wrong result (invalid tuple)");
PyErr_Print();
PyErr_Clear();
err = -EIO;
} else {
*dbValue = PyLong_AsLong(PyTuple_GetItem(res, 1));
}
} else {
*dbValue = PyInt_AsLong(PyTuple_GetItem(res, 1));
}
}
Py_XDECREF(res);
return err;
}
static int get_dB_ops(snd_mixer_elem_t *elem,
int dir,
snd_mixer_selem_channel_id_t channel,
@ -278,7 +321,6 @@ static int set_volume_ops(snd_mixer_elem_t *elem, int dir,
return pcall(pymelem, "opsSetVolume", obj1, NULL);
}
static int set_switch_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, int value)
{
@ -384,6 +426,8 @@ static struct sm_elem_ops simple_python_ops = {
.get_range = get_range_ops,
.get_dB_range = get_dB_range_ops,
.set_range = set_range_ops,
.ask_vol_dB = ask_vol_dB_ops,
.ask_dB_vol = ask_dB_vol_ops,
.get_volume = get_volume_ops,
.get_dB = get_dB_ops,
.set_volume = set_volume_ops,