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coreaudio: Handle output device change 

An output device change can occur when plugging or unplugging an
earphone.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20210311151512.22096-3-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Akihiko Odaki 2021-03-12 00:15:12 +09:00 committed by Gerd Hoffmann
parent 7d6948cd98
commit 3ba6e3f688
1 changed files with 165 additions and 43 deletions
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208
audio/coreaudio.c
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@ -41,19 +41,21 @@ typedef struct coreaudioVoiceOut {
UInt32 audioDevicePropertyBufferFrameSize;
AudioStreamBasicDescription outputStreamBasicDescription;
AudioDeviceIOProcID ioprocid;
bool enabled;
} coreaudioVoiceOut;
static const AudioObjectPropertyAddress voice_addr = {
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
static OSStatus coreaudio_get_voice(AudioDeviceID *id)
{
UInt32 size = sizeof(*id);
AudioObjectPropertyAddress addr = {
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
return AudioObjectGetPropertyData(kAudioObjectSystemObject,
&addr,
&voice_addr,
0,
NULL,
&size,
@ -258,18 +260,6 @@ static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 (
#define coreaudio_playback_logerr(status, ...) \
coreaudio_logerr2(status, "playback", __VA_ARGS__)
static inline UInt32 isPlaying (AudioDeviceID outputDeviceID)
{
OSStatus status;
UInt32 result = 0;
status = coreaudio_get_isrunning(outputDeviceID, &result);
if (status != kAudioHardwareNoError) {
coreaudio_logerr(status,
"Could not determine whether Device is playing\n");
}
return result;
}
static int coreaudio_lock (coreaudioVoiceOut *core, const char *fn_name)
{
int err;
@ -341,6 +331,11 @@ static OSStatus audioDeviceIOProc(
return 0;
}
if (inDevice != core->outputDeviceID) {
coreaudio_unlock (core, "audioDeviceIOProc(old device)");
return 0;
}
frameCount = core->audioDevicePropertyBufferFrameSize;
pending_frames = hw->pending_emul / hw->info.bytes_per_frame;
@ -392,6 +387,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
/* get minimum and maximum buffer frame sizes */
status = coreaudio_get_framesizerange(core->outputDeviceID,
&frameRange);
if (status == kAudioHardwareBadObjectError) {
return 0;
}
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not get device buffer frame range\n");
@ -411,6 +409,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
/* set Buffer Frame Size */
status = coreaudio_set_framesize(core->outputDeviceID,
&core->audioDevicePropertyBufferFrameSize);
if (status == kAudioHardwareBadObjectError) {
return 0;
}
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not set device buffer frame size %" PRIu32 "\n",
@ -421,6 +422,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
/* get Buffer Frame Size */
status = coreaudio_get_framesize(core->outputDeviceID,
&core->audioDevicePropertyBufferFrameSize);
if (status == kAudioHardwareBadObjectError) {
return 0;
}
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not get device buffer frame size\n");
@ -431,6 +435,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
/* get StreamFormat */
status = coreaudio_get_streamformat(core->outputDeviceID,
&core->outputStreamBasicDescription);
if (status == kAudioHardwareBadObjectError) {
return 0;
}
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not get Device Stream properties\n");
@ -441,6 +448,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
/* set Samplerate */
status = coreaudio_set_streamformat(core->outputDeviceID,
&core->outputStreamBasicDescription);
if (status == kAudioHardwareBadObjectError) {
return 0;
}
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not set samplerate %lf\n",
@ -455,6 +465,9 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
audioDeviceIOProc,
&core->hw,
&core->ioprocid);
if (status == kAudioHardwareBadDeviceError) {
return 0;
}
if (status != kAudioHardwareNoError || core->ioprocid == NULL) {
coreaudio_playback_logerr (status, "Could not set IOProc\n");
core->outputDeviceID = kAudioDeviceUnknown;
@ -467,24 +480,94 @@ static OSStatus init_out_device(coreaudioVoiceOut *core)
static void fini_out_device(coreaudioVoiceOut *core)
{
OSStatus status;
UInt32 isrunning;
/* stop playback */
if (isPlaying(core->outputDeviceID)) {
status = AudioDeviceStop(core->outputDeviceID, core->ioprocid);
status = coreaudio_get_isrunning(core->outputDeviceID, &isrunning);
if (status != kAudioHardwareBadObjectError) {
if (status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not stop playback\n");
coreaudio_logerr(status,
"Could not determine whether Device is playing\n");
}
if (isrunning) {
status = AudioDeviceStop(core->outputDeviceID, core->ioprocid);
if (status != kAudioHardwareBadDeviceError && status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not stop playback\n");
}
}
}
/* remove callback */
status = AudioDeviceDestroyIOProcID(core->outputDeviceID,
core->ioprocid);
if (status != kAudioHardwareNoError) {
if (status != kAudioHardwareBadDeviceError && status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not remove IOProc\n");
}
core->outputDeviceID = kAudioDeviceUnknown;
}
static void update_device_playback_state(coreaudioVoiceOut *core)
{
OSStatus status;
UInt32 isrunning;
status = coreaudio_get_isrunning(core->outputDeviceID, &isrunning);
if (status != kAudioHardwareNoError) {
if (status != kAudioHardwareBadObjectError) {
coreaudio_logerr(status,
"Could not determine whether Device is playing\n");
}
return;
}
if (core->enabled) {
/* start playback */
if (!isrunning) {
status = AudioDeviceStart(core->outputDeviceID, core->ioprocid);
if (status != kAudioHardwareBadDeviceError && status != kAudioHardwareNoError) {
coreaudio_logerr (status, "Could not resume playback\n");
}
}
} else {
/* stop playback */
if (isrunning) {
status = AudioDeviceStop(core->outputDeviceID,
core->ioprocid);
if (status != kAudioHardwareBadDeviceError && status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not pause playback\n");
}
}
}
}
static OSStatus handle_voice_change(
AudioObjectID in_object_id,
UInt32 in_number_addresses,
const AudioObjectPropertyAddress *in_addresses,
void *in_client_data)
{
OSStatus status;
coreaudioVoiceOut *core = in_client_data;
if (coreaudio_lock(core, __func__)) {
abort();
}
if (core->outputDeviceID) {
fini_out_device(core);
}
status = init_out_device(core);
if (!status) {
update_device_playback_state(core);
}
coreaudio_unlock (core, __func__);
return status;
}
static int coreaudio_init_out(HWVoiceOut *hw, struct audsettings *as,
void *drv_opaque)
{
@ -499,7 +582,11 @@ static int coreaudio_init_out(HWVoiceOut *hw, struct audsettings *as,
err = pthread_mutex_init(&core->mutex, NULL);
if (err) {
dolog("Could not create mutex\nReason: %s\n", strerror (err));
return -1;
goto mutex_error;
}
if (coreaudio_lock(core, __func__)) {
goto lock_error;
}
obt_as = *as;
@ -513,11 +600,43 @@ static int coreaudio_init_out(HWVoiceOut *hw, struct audsettings *as,
core->bufferCount = cpdo->has_buffer_count ? cpdo->buffer_count : 4;
core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
if (init_out_device(core)) {
return -1;
status = AudioObjectAddPropertyListener(kAudioObjectSystemObject,
&voice_addr, handle_voice_change,
core);
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr (status,
"Could not listen to voice property change\n");
goto listener_error;
}
if (init_out_device(core)) {
goto device_error;
}
coreaudio_unlock(core, __func__);
return 0;
device_error:
status = AudioObjectRemovePropertyListener(kAudioObjectSystemObject,
&voice_addr,
handle_voice_change,
core);
if (status != kAudioHardwareNoError) {
coreaudio_playback_logerr(status,
"Could not remove voice property change listener\n");
}
listener_error:
coreaudio_unlock(core, __func__);
lock_error:
err = pthread_mutex_destroy(&core->mutex);
if (err) {
dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
}
mutex_error:
return -1;
}
static void coreaudio_fini_out (HWVoiceOut *hw)
@ -526,8 +645,22 @@ static void coreaudio_fini_out (HWVoiceOut *hw)
int err;
coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
if (coreaudio_lock(core, __func__)) {
abort();
}
status = AudioObjectRemovePropertyListener(kAudioObjectSystemObject,
&voice_addr,
handle_voice_change,
core);
if (status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not remove voice property change listener\n");
}
fini_out_device(core);
coreaudio_unlock(core, __func__);
/* destroy mutex */
err = pthread_mutex_destroy(&core->mutex);
if (err) {
@ -537,27 +670,16 @@ static void coreaudio_fini_out (HWVoiceOut *hw)
static void coreaudio_enable_out(HWVoiceOut *hw, bool enable)
{
OSStatus status;
coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
if (enable) {
/* start playback */
if (!isPlaying(core->outputDeviceID)) {
status = AudioDeviceStart(core->outputDeviceID, core->ioprocid);
if (status != kAudioHardwareNoError) {
coreaudio_logerr (status, "Could not resume playback\n");
}
}
} else {
/* stop playback */
if (isPlaying(core->outputDeviceID)) {
status = AudioDeviceStop(core->outputDeviceID,
core->ioprocid);
if (status != kAudioHardwareNoError) {
coreaudio_logerr(status, "Could not pause playback\n");
}
}
if (coreaudio_lock(core, __func__)) {
abort();
}
core->enabled = enable;
update_device_playback_state(core);
coreaudio_unlock(core, __func__);
}
static void *coreaudio_audio_init(Audiodev *dev)