Re: [Iaxclient-devel] iaxc_audio_devices_set

[Steve K. <st...@st...>]

Mike,


That seems like what I'd expect;  The "devices" list should stay the
same after you call iaxc_audio_devices_set, but the integers returned
into *input, *output, *ring should indicate the currently selected
devices.

hmm, maybe I should document these better :)
+/* Get audio device information:
+ *     **devs: a pointer to an array of device structures, as declared
above.  function
+ *     will give you a pointer to the proper array, which will be valid
as long as iaxc is
+ *     initialized.
+ *
+ *     *nDevs: a pointer to an int, to which the count of devices in
the array devs will be
+ *     written
+ *
+ *     *input, *output, *ring: the currently selected devices for
input, output, ring will
+ *     be written to the int pointed to by these pointers.
+ */
+int iaxc_audio_devices_get(struct iaxc_audio_device **devs, int *nDevs,
int *input, int *output, int *ring);


So, here's some code to use this:

int input, output, ring, nDevs;
struct iaxc_audio_devices *devs;

/* get the current settings */
iaxc_audio_devices_get(&devs, &nDevs, &input, &output, &ring);
/* now:
    devs[] is the array of devices,
    nDevs is the number of devices in devs[],
    input is the currently selected input device
    output is the currently selected output device
    ring is the currently selected ring device
*/


/* set them to something else */
iaxc_audio_devices_set(2, 3, 4);

/* get the new settings */
iaxc_audio_devices_get(&devs, &nDevs, &input, &output, &ring);
/* now, input should be 2, output 3, and ring 4 */


-SteveK




On Mon, 2003-07-21 at 10:32, Michael Van Donselaar wrote:

> On Mon, 21 Jul 2003 10:04:21 -0400, Steve wrote:
> 
> >On Mon, 2003-07-21 at 09:46, Michael Van Donselaar wrote:
> >
> >> Has anyone lese been messing with setting audio devices under windows?
> >> I'm not sure if I have a cross platform issue, or if the real problem is
> >> between the chaid and keyboard.
> >> 
> >> I called iaxc_audio_devices_get() and find that device 4 has
> >> capabilities for IAXC_AD_OUTPUT and IAXC_AUDIO_AD_RING.
> >> 
> >> Then I call iaxc_audio_devices_set(0,4,4) to set input to default
> >> (Microsoft Sound Mapper - Input) and output and ring to deviceid 4
> >> (Avance AC97 Audio).
> >> 
> >> Calling iaxc_audio_devices_get() shows no change to audio device
> >> assignment.
> >> 
> >> Any ideas?
> >
> >
> >Hmm, those calls eventually end up here, in audio_portaudio.c:
> >
> >    349 int pa_select_devices (struct iaxc_audio_driver *d, int input,
> >int output, int ring) {
> >    350     selectedInput = input;
> >    351     selectedOutput = output;
> >    352     selectedRing = ring;
> >    353     if(running) {
> >    354       pa_stop(d);
> >    355       pa_start(d);
> >    356     }
> >    357     return 0;
> >    358 }
> >    359
> >    360 int pa_selected_devices (struct iaxc_audio_driver *d, int
> >*input, int *output, int *ring) {
> >    361     *input = selectedInput;
> >    362     *output = selectedOutput;
> >    363     *ring = selectedRing;
> >    364     return 0;
> >    365 }
> >
> >so, I'm not sure how they could fail;  we don't even check that the
> >choices you give us are valid..
> >
> >The only other place those variables are assigned to is in the
> >initialize method, which should only get called from iaxc_initialize().
> >
> >-SteveK
> 
> Could you take a look at this code and output?

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