| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #define LOG_TAG "VehicleNetworkAudioHelper" |
| |
| #include <VehicleNetwork.h> |
| #include <vehicle-internal.h> |
| #include <utils/SystemClock.h> |
| #include "VehicleNetworkAudioHelper.h" |
| |
| //#define DBG |
| #ifdef DBG |
| #define LOGD(x...) ALOGD(x) |
| #else |
| #define LOGD(x...) |
| #endif |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| |
| VehicleNetworkAudioHelper::VehicleNetworkAudioHelper(int64_t timeoutNs) |
| : mTimeoutNs(timeoutNs), |
| mListener(NULL), |
| mHasFocusProperty(false) { |
| } |
| |
| VehicleNetworkAudioHelper::VehicleNetworkAudioHelper(int64_t timeoutNs, |
| sp<VehicleNetworkAudioFocusListener> listener) |
| : mTimeoutNs(timeoutNs), |
| mListener(listener), |
| mHasFocusProperty(false) { |
| } |
| |
| VehicleNetworkAudioHelper::~VehicleNetworkAudioHelper() { |
| // nothing to do |
| } |
| |
| status_t VehicleNetworkAudioHelper::init() { |
| Mutex::Autolock autoLock(mLock); |
| sp<VehicleNetworkListener> listener(this); |
| mService = VehicleNetwork::createVehicleNetwork(listener); |
| mScratchValueStreamState.prop = VEHICLE_PROPERTY_INTERNAL_AUDIO_STREAM_STATE; |
| mScratchValueStreamState.value_type = VEHICLE_VALUE_TYPE_INT32_VEC2; |
| mScratchValueStreamState.timestamp = 0; |
| mScratchValueFocus.prop = VEHICLE_PROPERTY_AUDIO_FOCUS; |
| mScratchValueFocus.value_type = VEHICLE_VALUE_TYPE_INT32_VEC4; |
| mScratchValueFocus.timestamp = 0; |
| updatePropertiesLocked(); |
| return NO_ERROR; |
| } |
| |
| void VehicleNetworkAudioHelper::updatePropertiesLocked() { |
| sp<VehiclePropertiesHolder> holder = mService->listProperties(VEHICLE_PROPERTY_AUDIO_FOCUS); |
| if (holder.get() != NULL && holder->getList().size() == 1) { |
| mHasFocusProperty = true; |
| mService->subscribe(VEHICLE_PROPERTY_AUDIO_FOCUS, 0); |
| mService->getProperty(&mScratchValueFocus); |
| mAllowedStreams = mScratchValueFocus.value.int32_array[VEHICLE_AUDIO_FOCUS_INDEX_STREAMS]; |
| ALOGI("initial focus state 0x%x", mAllowedStreams); |
| } else { |
| ALOGW("No focus property, assume focus always granted"); |
| mHasFocusProperty = false; |
| mAllowedStreams = 0xffffffff; |
| } |
| for (size_t i = 0; i < mStreamStates.size(); i++) { |
| mStreamStates.editItemAt(i).timeoutStartNs = 0; |
| } |
| } |
| |
| void VehicleNetworkAudioHelper::release() { |
| Mutex::Autolock autoLock(mLock); |
| if (mService.get() == NULL) { |
| return; |
| } |
| mService = NULL; |
| } |
| |
| static int32_t streamFlagToStreamNumber(int32_t streamFlag) { |
| int32_t flag = 0x1; |
| for (int32_t i = 0; i < 32; i++) { |
| if ((flag & streamFlag) != 0) { |
| return i; |
| } |
| flag = flag << 1; |
| } |
| return -1; |
| } |
| |
| void VehicleNetworkAudioHelper::notifyStreamStarted(int32_t stream) { |
| Mutex::Autolock autoLock(mLock); |
| if (!mHasFocusProperty) { |
| return; |
| } |
| int32_t streamNumber = streamFlagToStreamNumber(stream); |
| if (streamNumber < 0) { |
| ALOGE("notifyStreamStarted, wrong stream:0x%x", stream); |
| return; |
| } |
| StreamState& state = getStreamStateLocked(streamNumber); |
| if (state.started) { |
| return; |
| } |
| state.started = true; |
| state.timeoutStartNs = elapsedRealtimeNano(); |
| mScratchValueStreamState.value.int32_array[VEHICLE_AUDIO_STREAM_STATE_INDEX_STATE] = |
| VEHICLE_AUDIO_STREAM_STATE_STARTED; |
| mScratchValueStreamState.value.int32_array[VEHICLE_AUDIO_STREAM_STATE_INDEX_STREAM] = |
| streamNumber; |
| mScratchValueStreamState.timestamp = android::elapsedRealtimeNano(); |
| mService->setProperty(mScratchValueStreamState); |
| } |
| |
| void VehicleNetworkAudioHelper::notifyStreamStopped(int32_t stream) { |
| Mutex::Autolock autoLock(mLock); |
| if (!mHasFocusProperty) { |
| return; |
| } |
| int32_t streamNumber = streamFlagToStreamNumber(stream); |
| if (streamNumber < 0) { |
| ALOGE("notifyStreamStopped, wrong stream:0x%x", stream); |
| return; |
| } |
| StreamState& state = getStreamStateLocked(streamNumber); |
| if (!state.started) { |
| return; |
| } |
| state.started = false; |
| state.timeoutStartNs = 0; |
| mScratchValueStreamState.value.int32_array[VEHICLE_AUDIO_STREAM_STATE_INDEX_STATE] = |
| VEHICLE_AUDIO_STREAM_STATE_STOPPED; |
| mScratchValueStreamState.value.int32_array[VEHICLE_AUDIO_STREAM_STATE_INDEX_STREAM] = |
| streamNumber; |
| mScratchValueStreamState.timestamp = android::elapsedRealtimeNano(); |
| mService->setProperty(mScratchValueStreamState); |
| } |
| |
| VehicleNetworkAudioHelper::StreamState& VehicleNetworkAudioHelper::getStreamStateLocked( |
| int32_t streamNumber) { |
| if (streamNumber >= (int32_t) mStreamStates.size()) { |
| mStreamStates.insertAt(mStreamStates.size(), streamNumber - mStreamStates.size() + 1); |
| } |
| return mStreamStates.editItemAt(streamNumber); |
| } |
| |
| vehicle_network_audio_helper_focus_state VehicleNetworkAudioHelper::getStreamFocusState( |
| int32_t stream) { |
| Mutex::Autolock autoLock(mLock); |
| if ((mAllowedStreams & stream) == stream) { |
| return VEHICLE_NETWORK_AUDIO_HELPER_FOCUS_STATE_FOCUS; |
| } |
| int32_t streamNumber = streamFlagToStreamNumber(stream); |
| if (streamNumber < 0) { |
| ALOGE("getStreamFocusState, wrong stream:0x%x", stream); |
| return VEHICLE_NETWORK_AUDIO_HELPER_FOCUS_STATE_TIMEOUT; |
| } |
| StreamState& state = getStreamStateLocked(streamNumber); |
| if (state.timeoutStartNs == 0) { |
| if (state.started) { |
| state.timeoutStartNs = elapsedRealtimeNano(); |
| } |
| } else { |
| int64_t now = elapsedRealtimeNano(); |
| if ((state.timeoutStartNs + mTimeoutNs) < now) { |
| return VEHICLE_NETWORK_AUDIO_HELPER_FOCUS_STATE_TIMEOUT; |
| } |
| } |
| return VEHICLE_NETWORK_AUDIO_HELPER_FOCUS_STATE_NO_FOCUS; |
| } |
| |
| bool VehicleNetworkAudioHelper::waitForStreamFocus(int32_t stream, nsecs_t waitTimeNs) { |
| LOGD("waitForStreamFocus"); |
| Mutex::Autolock autoLock(mLock); |
| int64_t currentTime = android::elapsedRealtimeNano(); |
| int64_t finishTime = currentTime + waitTimeNs; |
| while (true) { |
| if ((stream & mAllowedStreams) == stream) { |
| LOGD("waitForStreamFocus, has focus"); |
| return true; |
| } |
| currentTime = android::elapsedRealtimeNano(); |
| if (currentTime >= finishTime) { |
| break; |
| } |
| nsecs_t waitTime = finishTime - currentTime; |
| mFocusWait.waitRelative(mLock, waitTime); |
| } |
| LOGD("waitForStreamFocus, no focus"); |
| return false; |
| } |
| |
| void VehicleNetworkAudioHelper::onEvents(sp<VehiclePropValueListHolder>& events) { |
| sp<VehicleNetworkAudioFocusListener> listener; |
| int32_t allowedStreams; |
| bool changed = false; |
| do { |
| Mutex::Autolock autoLock(mLock); |
| if (mService.get() == NULL) { // already released |
| return; |
| } |
| for (vehicle_prop_value_t* value : events->getList()) { |
| if (value->prop == VEHICLE_PROPERTY_AUDIO_FOCUS) { |
| mAllowedStreams = value->value.int32_array[VEHICLE_AUDIO_FOCUS_INDEX_STREAMS]; |
| ALOGI("audio focus change 0x%x", mAllowedStreams); |
| changed = true; |
| } |
| } |
| listener = mListener; |
| allowedStreams = mAllowedStreams; |
| if (changed) { |
| mFocusWait.signal(); |
| } |
| } while (false); |
| if (listener.get() != NULL && changed) { |
| listener->onFocusChange(allowedStreams); |
| } |
| } |
| |
| void VehicleNetworkAudioHelper::onHalError(int32_t /*errorCode*/, int32_t /*property*/, |
| int32_t /*operation*/) { |
| // not used |
| } |
| |
| void VehicleNetworkAudioHelper::onHalRestart(bool /*inMocking*/) { |
| LOGD("onHalRestart"); |
| Mutex::Autolock autoLock(mLock); |
| if (mService.get() == NULL) { // already released |
| return; |
| } |
| updatePropertiesLocked(); |
| mFocusWait.signal(); |
| } |
| |
| void VehicleNetworkAudioHelper::onPropertySet(const vehicle_prop_value_t &value __attribute__((unused))) { |
| } |
| |
| }; // namespace android |
