| /* |
| * 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 "APM::AudioSession" |
| //#define LOG_NDEBUG 0 |
| |
| #include <AudioPolicyInterface.h> |
| #include "policy.h" |
| #include "AudioSession.h" |
| #include "AudioGain.h" |
| #include "TypeConverter.h" |
| |
| #include <log/log.h> |
| #include <utils/String8.h> |
| |
| namespace android { |
| |
| AudioSession::AudioSession(audio_session_t session, |
| audio_source_t inputSource, |
| audio_format_t format, |
| uint32_t sampleRate, |
| audio_channel_mask_t channelMask, |
| audio_input_flags_t flags, |
| uid_t uid, |
| bool isSoundTrigger, |
| AudioMix* policyMix, |
| AudioPolicyClientInterface *clientInterface) : |
| mRecordClientInfo({ .uid = uid, .session = session, .source = inputSource}), |
| mConfig({ .format = format, .sample_rate = sampleRate, .channel_mask = channelMask}), |
| mFlags(flags), mIsSoundTrigger(isSoundTrigger), |
| mOpenCount(1), mActiveCount(0), mPolicyMix(policyMix), mClientInterface(clientInterface), |
| mInfoProvider(NULL) |
| { |
| } |
| |
| uint32_t AudioSession::changeOpenCount(int delta) |
| { |
| if ((delta + (int)mOpenCount) < 0) { |
| ALOGW("%s invalid delta %d, open count %d", |
| __FUNCTION__, delta, mOpenCount); |
| mOpenCount = (uint32_t)(-delta); |
| } |
| mOpenCount += delta; |
| ALOGV("%s open count %d", __FUNCTION__, mOpenCount); |
| return mOpenCount; |
| } |
| |
| uint32_t AudioSession::changeActiveCount(int delta) |
| { |
| const uint32_t oldActiveCount = mActiveCount; |
| if ((delta + (int)mActiveCount) < 0) { |
| ALOGW("%s invalid delta %d, active count %d", |
| __FUNCTION__, delta, mActiveCount); |
| mActiveCount = (uint32_t)(-delta); |
| } |
| mActiveCount += delta; |
| ALOGV("%s active count %d", __FUNCTION__, mActiveCount); |
| int event = RECORD_CONFIG_EVENT_NONE; |
| |
| if ((oldActiveCount == 0) && (mActiveCount > 0)) { |
| event = RECORD_CONFIG_EVENT_START; |
| } else if ((oldActiveCount > 0) && (mActiveCount == 0)) { |
| event = RECORD_CONFIG_EVENT_STOP; |
| } |
| |
| if (event != RECORD_CONFIG_EVENT_NONE) { |
| // Dynamic policy callback: |
| // if input maps to a dynamic policy with an activity listener, notify of state change |
| if ((mPolicyMix != NULL) && ((mPolicyMix->mCbFlags & AudioMix::kCbFlagNotifyActivity) != 0)) |
| { |
| mClientInterface->onDynamicPolicyMixStateUpdate(mPolicyMix->mDeviceAddress, |
| (event == RECORD_CONFIG_EVENT_START) ? MIX_STATE_MIXING : MIX_STATE_IDLE); |
| } |
| |
| // Recording configuration callback: |
| const AudioSessionInfoProvider* provider = mInfoProvider; |
| const audio_config_base_t deviceConfig = (provider != NULL) ? provider->getConfig() : |
| AUDIO_CONFIG_BASE_INITIALIZER; |
| const audio_patch_handle_t patchHandle = (provider != NULL) ? provider->getPatchHandle() : |
| AUDIO_PATCH_HANDLE_NONE; |
| if (patchHandle != AUDIO_PATCH_HANDLE_NONE) { |
| mClientInterface->onRecordingConfigurationUpdate(event, &mRecordClientInfo, |
| &mConfig, &deviceConfig, patchHandle); |
| } |
| } |
| |
| return mActiveCount; |
| } |
| |
| bool AudioSession::matches(const sp<AudioSession> &other) const |
| { |
| if (other->session() == mRecordClientInfo.session && |
| other->inputSource() == mRecordClientInfo.source && |
| other->format() == mConfig.format && |
| other->sampleRate() == mConfig.sample_rate && |
| other->channelMask() == mConfig.channel_mask && |
| other->flags() == mFlags && |
| other->uid() == mRecordClientInfo.uid) { |
| return true; |
| } |
| return false; |
| } |
| |
| void AudioSession::setInfoProvider(AudioSessionInfoProvider *provider) |
| { |
| mInfoProvider = provider; |
| } |
| |
| void AudioSession::onSessionInfoUpdate() const |
| { |
| if (mActiveCount > 0) { |
| // resend the callback after requerying the informations from the info provider |
| const AudioSessionInfoProvider* provider = mInfoProvider; |
| const audio_config_base_t deviceConfig = (provider != NULL) ? provider->getConfig() : |
| AUDIO_CONFIG_BASE_INITIALIZER; |
| const audio_patch_handle_t patchHandle = (provider != NULL) ? provider->getPatchHandle() : |
| AUDIO_PATCH_HANDLE_NONE; |
| if (patchHandle != AUDIO_PATCH_HANDLE_NONE) { |
| mClientInterface->onRecordingConfigurationUpdate(RECORD_CONFIG_EVENT_START, |
| &mRecordClientInfo, &mConfig, &deviceConfig, patchHandle); |
| } |
| } |
| } |
| |
| status_t AudioSession::dump(int fd, int spaces, int index) const |
| { |
| const size_t SIZE = 256; |
| char buffer[SIZE]; |
| String8 result; |
| |
| snprintf(buffer, SIZE, "%*sAudio session %d:\n", spaces, "", index+1); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- session: %2d\n", spaces, "", mRecordClientInfo.session); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- owner uid: %2d\n", spaces, "", mRecordClientInfo.uid); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- input source: %d\n", spaces, "", mRecordClientInfo.source); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- format: %08x\n", spaces, "", mConfig.format); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- sample: %d\n", spaces, "", mConfig.sample_rate); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- channel mask: %08x\n", |
| spaces, "", mConfig.channel_mask); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- is soundtrigger: %s\n", |
| spaces, "", mIsSoundTrigger ? "true" : "false"); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- open count: %d\n", spaces, "", mOpenCount); |
| result.append(buffer); |
| snprintf(buffer, SIZE, "%*s- active count: %d\n", spaces, "", mActiveCount); |
| result.append(buffer); |
| |
| write(fd, result.string(), result.size()); |
| return NO_ERROR; |
| } |
| |
| status_t AudioSessionCollection::addSession(audio_session_t session, |
| const sp<AudioSession>& audioSession, |
| AudioSessionInfoProvider *provider) |
| { |
| ssize_t index = indexOfKey(session); |
| |
| if (index >= 0) { |
| ALOGW("addSession() session %d already in", session); |
| return ALREADY_EXISTS; |
| } |
| audioSession->setInfoProvider(provider); |
| add(session, audioSession); |
| ALOGV("addSession() session %d client %d source %d", |
| session, audioSession->uid(), audioSession->inputSource()); |
| return NO_ERROR; |
| } |
| |
| status_t AudioSessionCollection::removeSession(audio_session_t session) |
| { |
| ssize_t index = indexOfKey(session); |
| |
| if (index < 0) { |
| ALOGW("removeSession() session %d not in", session); |
| return ALREADY_EXISTS; |
| } |
| ALOGV("removeSession() session %d", session); |
| valueAt(index)->setInfoProvider(NULL); |
| removeItemsAt(index); |
| return NO_ERROR; |
| } |
| |
| uint32_t AudioSessionCollection::getOpenCount() const |
| { |
| uint32_t openCount = 0; |
| for (size_t i = 0; i < size(); i++) { |
| openCount += valueAt(i)->openCount(); |
| } |
| return openCount; |
| } |
| |
| AudioSessionCollection AudioSessionCollection::getActiveSessions() const |
| { |
| AudioSessionCollection activeSessions; |
| for (size_t i = 0; i < size(); i++) { |
| if (valueAt(i)->activeCount() != 0) { |
| activeSessions.add(valueAt(i)->session(), valueAt(i)); |
| } |
| } |
| return activeSessions; |
| } |
| |
| size_t AudioSessionCollection::getActiveSessionCount() const |
| { |
| size_t activeCount = 0; |
| for (size_t i = 0; i < size(); i++) { |
| if (valueAt(i)->activeCount() != 0) { |
| activeCount++; |
| } |
| } |
| return activeCount; |
| } |
| |
| bool AudioSessionCollection::hasActiveSession() const |
| { |
| return getActiveSessionCount() != 0; |
| } |
| |
| bool AudioSessionCollection::isSourceActive(audio_source_t source) const |
| { |
| for (size_t i = 0; i < size(); i++) { |
| const sp<AudioSession> audioSession = valueAt(i); |
| // AUDIO_SOURCE_HOTWORD is equivalent to AUDIO_SOURCE_VOICE_RECOGNITION only if it |
| // corresponds to an active capture triggered by a hardware hotword recognition |
| if (audioSession->activeCount() > 0 && |
| ((audioSession->inputSource() == source) || |
| ((source == AUDIO_SOURCE_VOICE_RECOGNITION) && |
| (audioSession->inputSource() == AUDIO_SOURCE_HOTWORD) && |
| audioSession->isSoundTrigger()))) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| audio_source_t AudioSessionCollection::getHighestPrioritySource(bool activeOnly) const |
| { |
| audio_source_t source = AUDIO_SOURCE_DEFAULT; |
| int32_t priority = -1; |
| |
| for (size_t i = 0; i < size(); i++) { |
| const sp<AudioSession> audioSession = valueAt(i); |
| if (activeOnly && audioSession->activeCount() == 0) { |
| continue; |
| } |
| int32_t curPriority = source_priority(audioSession->inputSource()); |
| if (curPriority > priority) { |
| priority = curPriority; |
| source = audioSession->inputSource(); |
| } |
| } |
| return source; |
| } |
| |
| void AudioSessionCollection::onSessionInfoUpdate() const |
| { |
| for (size_t i = 0; i < size(); i++) { |
| valueAt(i)->onSessionInfoUpdate(); |
| } |
| } |
| |
| status_t AudioSessionCollection::dump(int fd, int spaces) const |
| { |
| const size_t SIZE = 256; |
| char buffer[SIZE]; |
| snprintf(buffer, SIZE, "%*sAudio Sessions:\n", spaces, ""); |
| write(fd, buffer, strlen(buffer)); |
| for (size_t i = 0; i < size(); i++) { |
| valueAt(i)->dump(fd, spaces + 2, i); |
| } |
| return NO_ERROR; |
| } |
| |
| } // namespace android |