static int hotplug_init(struct ao *ao)
{
if (!reinit_device(ao))
goto coreaudio_error;
OSStatus err = noErr;
for (int i = 0; i < MP_ARRAY_SIZE(hotplug_properties); i++) {
AudioObjectPropertyAddress addr = {
hotplug_properties[i],
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
err = AudioObjectAddPropertyListener(
kAudioObjectSystemObject, &addr, hotplug_cb, (void *)ao);
if (err != noErr) {
char *c1 = fourcc_repr(hotplug_properties[i]);
char *c2 = fourcc_repr(err);
MP_ERR(ao, "failed to set device listener %s (%s)", c1, c2);
goto coreaudio_error;
}
}
return 0;
coreaudio_error:
return -1;
}
static void hotplug_uninit(struct ao *ao)
{
OSStatus err = noErr;
for (int i = 0; i < MP_ARRAY_SIZE(hotplug_properties); i++) {
AudioObjectPropertyAddress addr = {
hotplug_properties[i],
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
err = AudioObjectRemovePropertyListener(
kAudioObjectSystemObject, &addr, hotplug_cb, (void *)ao);
if (err != noErr) {
char *c1 = fourcc_repr(hotplug_properties[i]);
char *c2 = fourcc_repr(err);
MP_ERR(ao, "failed to set device listener %s (%s)", c1, c2);
}
}
}
bool check_ca_st(struct ao *ao, int level, OSStatus code, const char *message)
{
if (code == noErr) return true;
char *error_string = fourcc_repr(NULL, code);
mp_msg(ao->log, level, "%s (%s)\n", message, error_string);
talloc_free(error_string);
return false;
}
void ca_print_asbd(struct ao *ao, const char *description,
const AudioStreamBasicDescription *asbd)
{
uint32_t flags = asbd->mFormatFlags;
char *format = fourcc_repr(NULL, asbd->mFormatID);
MP_VERBOSE(ao,
"%s %7.1fHz %" PRIu32 "bit [%s]"
"[%" PRIu32 "][%" PRIu32 "][%" PRIu32 "]"
"[%" PRIu32 "][%" PRIu32 "] "
"%s %s %s%s%s%s\n",
description, asbd->mSampleRate, asbd->mBitsPerChannel, format,
asbd->mFormatFlags, asbd->mBytesPerPacket, asbd->mFramesPerPacket,
asbd->mBytesPerFrame, asbd->mChannelsPerFrame,
(flags & kAudioFormatFlagIsFloat) ? "float" : "int",
(flags & kAudioFormatFlagIsBigEndian) ? "BE" : "LE",
(flags & kAudioFormatFlagIsSignedInteger) ? "S" : "U",
(flags & kAudioFormatFlagIsPacked) ? " packed" : "",
(flags & kAudioFormatFlagIsAlignedHigh) ? " aligned" : "",
(flags & kAudioFormatFlagIsNonInterleaved) ? " P" : "");
talloc_free(format);
}
