audio: several fixes in audio routing callbacks
- audio policy:
Force device change to ensure new audio patch creation
upon first track activity on a given output.
Fix function device_distinguishes_on_address() which could mistake
some output device with remote submix input device.
- audio flinger:
Reduce number of binder calls upon new client registration by only
sending ioConfigChanged() callbacks to newly registered client.
Fix first patch after output thread creation not triggering an
ioConfigChanged() callback.
-audio system:
Force client registration upon routing callback installation to force
new ioConfigChanged() callback from audio flinger.
Bug: 22381136.
Change-Id: Ieb0d9f92f563a40552eb31bc0499c8ac65f78ce4
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 52fce34..8f1e050 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1252,11 +1252,9 @@
if (client == 0) {
return;
}
- bool clientAdded = false;
+ pid_t pid = IPCThreadState::self()->getCallingPid();
{
Mutex::Autolock _cl(mClientLock);
-
- pid_t pid = IPCThreadState::self()->getCallingPid();
if (mNotificationClients.indexOfKey(pid) < 0) {
sp<NotificationClient> notificationClient = new NotificationClient(this,
client,
@@ -1267,22 +1265,19 @@
sp<IBinder> binder = IInterface::asBinder(client);
binder->linkToDeath(notificationClient);
- clientAdded = true;
}
}
// mClientLock should not be held here because ThreadBase::sendIoConfigEvent() will lock the
// ThreadBase mutex and the locking order is ThreadBase::mLock then AudioFlinger::mClientLock.
- if (clientAdded) {
- // the config change is always sent from playback or record threads to avoid deadlock
- // with AudioSystem::gLock
- for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
- mPlaybackThreads.valueAt(i)->sendIoConfigEvent(AUDIO_OUTPUT_OPENED);
- }
+ // the config change is always sent from playback or record threads to avoid deadlock
+ // with AudioSystem::gLock
+ for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
+ mPlaybackThreads.valueAt(i)->sendIoConfigEvent(AUDIO_OUTPUT_OPENED, pid);
+ }
- for (size_t i = 0; i < mRecordThreads.size(); i++) {
- mRecordThreads.valueAt(i)->sendIoConfigEvent(AUDIO_INPUT_OPENED);
- }
+ for (size_t i = 0; i < mRecordThreads.size(); i++) {
+ mRecordThreads.valueAt(i)->sendIoConfigEvent(AUDIO_INPUT_OPENED, pid);
}
}
@@ -1316,12 +1311,15 @@
}
void AudioFlinger::ioConfigChanged(audio_io_config_event event,
- const sp<AudioIoDescriptor>& ioDesc)
+ const sp<AudioIoDescriptor>& ioDesc,
+ pid_t pid)
{
Mutex::Autolock _l(mClientLock);
size_t size = mNotificationClients.size();
for (size_t i = 0; i < size; i++) {
- mNotificationClients.valueAt(i)->audioFlingerClient()->ioConfigChanged(event, ioDesc);
+ if ((pid == 0) || (mNotificationClients.keyAt(i) == pid)) {
+ mNotificationClients.valueAt(i)->audioFlingerClient()->ioConfigChanged(event, ioDesc);
+ }
}
}
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index d087ced..4f7e27d 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -559,7 +559,8 @@
float streamVolume_l(audio_stream_type_t stream) const
{ return mStreamTypes[stream].volume; }
void ioConfigChanged(audio_io_config_event event,
- const sp<AudioIoDescriptor>& ioDesc);
+ const sp<AudioIoDescriptor>& ioDesc,
+ pid_t pid = 0);
// Allocate an audio_io_handle_t, session ID, effect ID, or audio_module_handle_t.
// They all share the same ID space, but the namespaces are actually independent
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index d3ea9d8..0880c5d 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -532,7 +532,8 @@
// RecordThread::readInputParameters_l()
//FIXME: mStandby should be true here. Is this some kind of hack?
mStandby(false), mOutDevice(outDevice), mInDevice(inDevice),
- mPrevInDevice(AUDIO_DEVICE_NONE), mAudioSource(AUDIO_SOURCE_DEFAULT), mId(id),
+ mPrevOutDevice(AUDIO_DEVICE_NONE), mPrevInDevice(AUDIO_DEVICE_NONE),
+ mAudioSource(AUDIO_SOURCE_DEFAULT), mId(id),
// mName will be set by concrete (non-virtual) subclass
mDeathRecipient(new PMDeathRecipient(this)),
mSystemReady(systemReady)
@@ -627,16 +628,16 @@
return status;
}
-void AudioFlinger::ThreadBase::sendIoConfigEvent(audio_io_config_event event)
+void AudioFlinger::ThreadBase::sendIoConfigEvent(audio_io_config_event event, pid_t pid)
{
Mutex::Autolock _l(mLock);
- sendIoConfigEvent_l(event);
+ sendIoConfigEvent_l(event, pid);
}
// sendIoConfigEvent_l() must be called with ThreadBase::mLock held
-void AudioFlinger::ThreadBase::sendIoConfigEvent_l(audio_io_config_event event)
+void AudioFlinger::ThreadBase::sendIoConfigEvent_l(audio_io_config_event event, pid_t pid)
{
- sp<ConfigEvent> configEvent = (ConfigEvent *)new IoConfigEvent(event);
+ sp<ConfigEvent> configEvent = (ConfigEvent *)new IoConfigEvent(event, pid);
sendConfigEvent_l(configEvent);
}
@@ -706,7 +707,7 @@
} break;
case CFG_EVENT_IO: {
IoConfigEventData *data = (IoConfigEventData *)event->mData.get();
- ioConfigChanged(data->mEvent);
+ ioConfigChanged(data->mEvent, data->mPid);
} break;
case CFG_EVENT_SET_PARAMETER: {
SetParameterConfigEventData *data = (SetParameterConfigEventData *)event->mData.get();
@@ -1999,7 +2000,7 @@
return out_s8;
}
-void AudioFlinger::PlaybackThread::ioConfigChanged(audio_io_config_event event) {
+void AudioFlinger::PlaybackThread::ioConfigChanged(audio_io_config_event event, pid_t pid) {
sp<AudioIoDescriptor> desc = new AudioIoDescriptor();
ALOGV("PlaybackThread::ioConfigChanged, thread %p, event %d", this, event);
@@ -2021,7 +2022,7 @@
default:
break;
}
- mAudioFlinger->ioConfigChanged(event, desc);
+ mAudioFlinger->ioConfigChanged(event, desc, pid);
}
void AudioFlinger::PlaybackThread::writeCallback()
@@ -3133,7 +3134,10 @@
for (size_t i = 0; i < mEffectChains.size(); i++) {
mEffectChains[i]->setDevice_l(type);
}
- bool configChanged = mOutDevice != type;
+
+ // mPrevOutDevice is the latest device set by createAudioPatch_l(). It is not set when
+ // the thread is created so that the first patch creation triggers an ioConfigChanged callback
+ bool configChanged = mPrevOutDevice != type;
mOutDevice = type;
mPatch = *patch;
@@ -3163,6 +3167,7 @@
*handle = AUDIO_PATCH_HANDLE_NONE;
}
if (configChanged) {
+ mPrevOutDevice = type;
sendIoConfigEvent_l(AUDIO_OUTPUT_CONFIG_CHANGED);
}
return status;
@@ -6868,7 +6873,7 @@
return out_s8;
}
-void AudioFlinger::RecordThread::ioConfigChanged(audio_io_config_event event) {
+void AudioFlinger::RecordThread::ioConfigChanged(audio_io_config_event event, pid_t pid) {
sp<AudioIoDescriptor> desc = new AudioIoDescriptor();
desc->mIoHandle = mId;
@@ -6888,7 +6893,7 @@
default:
break;
}
- mAudioFlinger->ioConfigChanged(event, desc);
+ mAudioFlinger->ioConfigChanged(event, desc, pid);
}
void AudioFlinger::RecordThread::readInputParameters_l()
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 0783371..46ac300 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -104,21 +104,22 @@
class IoConfigEventData : public ConfigEventData {
public:
- IoConfigEventData(audio_io_config_event event) :
- mEvent(event) {}
+ IoConfigEventData(audio_io_config_event event, pid_t pid) :
+ mEvent(event), mPid(pid) {}
virtual void dump(char *buffer, size_t size) {
snprintf(buffer, size, "IO event: event %d\n", mEvent);
}
const audio_io_config_event mEvent;
+ const pid_t mPid;
};
class IoConfigEvent : public ConfigEvent {
public:
- IoConfigEvent(audio_io_config_event event) :
+ IoConfigEvent(audio_io_config_event event, pid_t pid) :
ConfigEvent(CFG_EVENT_IO) {
- mData = new IoConfigEventData(event);
+ mData = new IoConfigEventData(event, pid);
}
virtual ~IoConfigEvent() {}
};
@@ -255,13 +256,13 @@
status_t& status) = 0;
virtual status_t setParameters(const String8& keyValuePairs);
virtual String8 getParameters(const String8& keys) = 0;
- virtual void ioConfigChanged(audio_io_config_event event) = 0;
+ virtual void ioConfigChanged(audio_io_config_event event, pid_t pid = 0) = 0;
// sendConfigEvent_l() must be called with ThreadBase::mLock held
// Can temporarily release the lock if waiting for a reply from
// processConfigEvents_l().
status_t sendConfigEvent_l(sp<ConfigEvent>& event);
- void sendIoConfigEvent(audio_io_config_event event);
- void sendIoConfigEvent_l(audio_io_config_event event);
+ void sendIoConfigEvent(audio_io_config_event event, pid_t pid = 0);
+ void sendIoConfigEvent_l(audio_io_config_event event, pid_t pid = 0);
void sendPrioConfigEvent(pid_t pid, pid_t tid, int32_t prio);
void sendPrioConfigEvent_l(pid_t pid, pid_t tid, int32_t prio);
status_t sendSetParameterConfigEvent_l(const String8& keyValuePair);
@@ -436,6 +437,7 @@
bool mStandby; // Whether thread is currently in standby.
audio_devices_t mOutDevice; // output device
audio_devices_t mInDevice; // input device
+ audio_devices_t mPrevOutDevice; // previous output device
audio_devices_t mPrevInDevice; // previous input device
struct audio_patch mPatch;
audio_source_t mAudioSource;
@@ -572,7 +574,7 @@
{ return android_atomic_acquire_load(&mSuspended) > 0; }
virtual String8 getParameters(const String8& keys);
- virtual void ioConfigChanged(audio_io_config_event event);
+ virtual void ioConfigChanged(audio_io_config_event event, pid_t pid = 0);
status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames);
// FIXME rename mixBuffer() to sinkBuffer() and remove int16_t* dependency.
// Consider also removing and passing an explicit mMainBuffer initialization
@@ -1254,7 +1256,7 @@
status_t& status);
virtual void cacheParameters_l() {}
virtual String8 getParameters(const String8& keys);
- virtual void ioConfigChanged(audio_io_config_event event);
+ virtual void ioConfigChanged(audio_io_config_event event, pid_t pid = 0);
virtual status_t createAudioPatch_l(const struct audio_patch *patch,
audio_patch_handle_t *handle);
virtual status_t releaseAudioPatch_l(const audio_patch_handle_t handle);