void ca_get_device_list(struct ao *ao, struct ao_device_list *list)
{
AudioDeviceID *devs;
size_t n_devs;
OSStatus err =
CA_GET_ARY(kAudioObjectSystemObject, kAudioHardwarePropertyDevices,
&devs, &n_devs);
CHECK_CA_ERROR("Failed to get list of output devices.");
for (int i = 0; i < n_devs; i++) {
if (!ca_is_output_device(ao, devs[i]))
continue;
void *ta_ctx = talloc_new(NULL);
char *name;
char *desc;
err = CA_GET_STR(devs[i], kAudioDevicePropertyDeviceUID, &name);
if (err != noErr) {
MP_VERBOSE(ao, "skipping device %d, which has no UID\n", i);
talloc_free(ta_ctx);
continue;
}
talloc_steal(ta_ctx, name);
err = CA_GET_STR(devs[i], kAudioObjectPropertyName, &desc);
if (err != noErr)
desc = talloc_strdup(NULL, "Unknown");
talloc_steal(ta_ctx, desc);
ao_device_list_add(list, ao, &(struct ao_device_desc){name, desc});
talloc_free(ta_ctx);
}
static void init_physical_format(struct ao *ao)
{
struct priv *p = ao->priv;
OSErr err;
AudioStreamBasicDescription asbd;
ca_fill_asbd(ao, &asbd);
AudioStreamID *streams;
size_t n_streams;
err = CA_GET_ARY_O(p->device, kAudioDevicePropertyStreams,
&streams, &n_streams);
CHECK_CA_ERROR("could not get number of streams");
for (int i = 0; i < n_streams; i++) {
AudioStreamRangedDescription *formats;
size_t n_formats;
err = CA_GET_ARY(streams[i],
kAudioStreamPropertyAvailablePhysicalFormats,
&formats, &n_formats);
if (!CHECK_CA_WARN("could not get number of stream formats"))
continue; // try next one
MP_VERBOSE(ao, "Looking at formats in substream %d...\n", i);
AudioStreamBasicDescription best_asbd = {0};
for (int j = 0; j < n_formats; j++) {
AudioStreamBasicDescription *stream_asbd = &formats[j].mFormat;
ca_print_asbd(ao, "- ", stream_asbd);
if (!best_asbd.mFormatID || ca_asbd_is_better(&asbd, &best_asbd,
stream_asbd))
best_asbd = *stream_asbd;
}
if (best_asbd.mFormatID) {
p->original_asbd_stream = streams[i];
err = CA_GET(p->original_asbd_stream,
kAudioStreamPropertyPhysicalFormat,
&p->original_asbd);
CHECK_CA_WARN("could not get current physical stream format");
ca_change_physical_format_sync(ao, streams[i], best_asbd);
break;
}
}
coreaudio_error:
return;
}
void ca_get_device_list(struct ao *ao, struct ao_device_list *list)
{
AudioDeviceID *devs;
size_t n_devs;
OSStatus err =
CA_GET_ARY(kAudioObjectSystemObject, kAudioHardwarePropertyDevices,
&devs, &n_devs);
CHECK_CA_ERROR("Failed to get list of output devices.");
for (int i = 0; i < n_devs; i++) {
char name[32];
char *desc;
sprintf(name, "%d", devs[i]);
err = CA_GET_STR(devs[i], kAudioObjectPropertyName, &desc);
if (err != noErr)
desc = "Unknown";
ao_device_list_add(list, ao, &(struct ao_device_desc){name, desc});
}
bool ca_stream_supports_digital(struct ao *ao, AudioStreamID stream)
{
AudioStreamRangedDescription *formats = NULL;
size_t n_formats;
OSStatus err =
CA_GET_ARY(stream, kAudioStreamPropertyAvailablePhysicalFormats,
&formats, &n_formats);
CHECK_CA_ERROR("Could not get number of stream formats.");
for (int i = 0; i < n_formats; i++) {
AudioStreamBasicDescription asbd = formats[i].mFormat;
ca_print_asbd(ao, "supported format:", &(asbd));
if (ca_format_is_digital(asbd)) {
talloc_free(formats);
return true;
}
}
talloc_free(formats);
coreaudio_error:
return false;
}
