AudioSystem: add APIs to control HAL stream latency mode
Add API to AudioSystem and AudioFlinger to discover and control
the latency modes supported by audio HAL streams
Bug: 218273231
Test: make
Change-Id: I84c2325301cc7a4cf058fa076d0645ede877b54f
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index de8c298..bacca3a 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -670,6 +670,30 @@
return Status::ok();
}
+Status AudioSystem::AudioFlingerClient::onSupportedLatencyModesChanged(
+ int output, const std::vector<media::LatencyMode>& latencyModes) {
+ audio_io_handle_t outputLegacy = VALUE_OR_RETURN_BINDER_STATUS(
+ aidl2legacy_int32_t_audio_io_handle_t(output));
+ std::vector<audio_latency_mode_t> modesLegacy = VALUE_OR_RETURN_BINDER_STATUS(
+ convertContainer<std::vector<audio_latency_mode_t>>(
+ latencyModes, aidl2legacy_LatencyMode_audio_latency_mode_t));
+
+ std::vector<sp<SupportedLatencyModesCallback>> callbacks;
+ {
+ Mutex::Autolock _l(mLock);
+ for (auto callback : mSupportedLatencyModesCallbacks) {
+ if (auto ref = callback.promote(); ref != nullptr) {
+ callbacks.push_back(ref);
+ }
+ }
+ }
+ for (const auto& callback : callbacks) {
+ callback->onSupportedLatencyModesChanged(outputLegacy, modesLegacy);
+ }
+
+ return Status::ok();
+}
+
status_t AudioSystem::AudioFlingerClient::getInputBufferSize(
uint32_t sampleRate, audio_format_t format,
audio_channel_mask_t channelMask, size_t* buffSize) {
@@ -749,6 +773,31 @@
return NO_ERROR;
}
+status_t AudioSystem::AudioFlingerClient::addSupportedLatencyModesCallback(
+ const sp<SupportedLatencyModesCallback>& callback) {
+ Mutex::Autolock _l(mLock);
+ if (std::find(mSupportedLatencyModesCallbacks.begin(),
+ mSupportedLatencyModesCallbacks.end(),
+ callback) != mSupportedLatencyModesCallbacks.end()) {
+ return INVALID_OPERATION;
+ }
+ mSupportedLatencyModesCallbacks.push_back(callback);
+ return NO_ERROR;
+}
+
+status_t AudioSystem::AudioFlingerClient::removeSupportedLatencyModesCallback(
+ const sp<SupportedLatencyModesCallback>& callback) {
+ Mutex::Autolock _l(mLock);
+ auto it = std::find(mSupportedLatencyModesCallbacks.begin(),
+ mSupportedLatencyModesCallbacks.end(),
+ callback);
+ if (it == mSupportedLatencyModesCallbacks.end()) {
+ return INVALID_OPERATION;
+ }
+ mSupportedLatencyModesCallbacks.erase(it);
+ return NO_ERROR;
+}
+
/* static */ uintptr_t AudioSystem::addErrorCallback(audio_error_callback cb) {
Mutex::Autolock _l(gLockErrorCallbacks);
gAudioErrorCallbacks.insert(cb);
@@ -1662,6 +1711,24 @@
return afc->removeAudioDeviceCallback(callback, audioIo, portId);
}
+status_t AudioSystem::addSupportedLatencyModesCallback(
+ const sp<SupportedLatencyModesCallback>& callback) {
+ const sp<AudioFlingerClient> afc = getAudioFlingerClient();
+ if (afc == 0) {
+ return NO_INIT;
+ }
+ return afc->addSupportedLatencyModesCallback(callback);
+}
+
+status_t AudioSystem::removeSupportedLatencyModesCallback(
+ const sp<SupportedLatencyModesCallback>& callback) {
+ const sp<AudioFlingerClient> afc = getAudioFlingerClient();
+ if (afc == 0) {
+ return NO_INIT;
+ }
+ return afc->removeSupportedLatencyModesCallback(callback);
+}
+
audio_port_handle_t AudioSystem::getDeviceIdForIo(audio_io_handle_t audioIo) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
@@ -2338,6 +2405,24 @@
return NO_ERROR;
}
+status_t AudioSystem::setRequestedLatencyMode(
+ audio_io_handle_t output, audio_latency_mode_t mode) {
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ if (af == nullptr) {
+ return PERMISSION_DENIED;
+ }
+ return af->setRequestedLatencyMode(output, mode);
+}
+
+status_t AudioSystem::getSupportedLatencyModes(audio_io_handle_t output,
+ std::vector<audio_latency_mode_t>* modes) {
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ if (af == nullptr) {
+ return PERMISSION_DENIED;
+ }
+ return af->getSupportedLatencyModes(output, modes);
+}
+
class CaptureStateListenerImpl : public media::BnCaptureStateListener,
public IBinder::DeathRecipient {
public: