| /* |
| * 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_AudioPolicyMix" |
| //#define LOG_NDEBUG 0 |
| |
| #include "AudioPolicyMix.h" |
| #include "HwModule.h" |
| #include "AudioPort.h" |
| #include "IOProfile.h" |
| #include "AudioGain.h" |
| #include <AudioOutputDescriptor.h> |
| |
| namespace android { |
| |
| void AudioPolicyMix::setOutput(sp<SwAudioOutputDescriptor> &output) |
| { |
| mOutput = output; |
| } |
| |
| const sp<SwAudioOutputDescriptor> &AudioPolicyMix::getOutput() const |
| { |
| return mOutput; |
| } |
| |
| void AudioPolicyMix::clearOutput() |
| { |
| mOutput.clear(); |
| } |
| |
| void AudioPolicyMix::setMix(AudioMix &mix) |
| { |
| mMix = mix; |
| } |
| |
| android::AudioMix *AudioPolicyMix::getMix() |
| { |
| return &mMix; |
| } |
| |
| status_t AudioPolicyMixCollection::registerMix(String8 address, AudioMix mix, |
| sp<SwAudioOutputDescriptor> desc) |
| { |
| ssize_t index = indexOfKey(address); |
| if (index >= 0) { |
| ALOGE("registerPolicyMixes(): mix for address %s already registered", address.string()); |
| return BAD_VALUE; |
| } |
| sp<AudioPolicyMix> policyMix = new AudioPolicyMix(); |
| policyMix->setMix(mix); |
| add(address, policyMix); |
| |
| if (desc != 0) { |
| desc->mPolicyMix = policyMix->getMix(); |
| policyMix->setOutput(desc); |
| } |
| return NO_ERROR; |
| } |
| |
| status_t AudioPolicyMixCollection::unregisterMix(String8 address) |
| { |
| ssize_t index = indexOfKey(address); |
| if (index < 0) { |
| ALOGE("unregisterPolicyMixes(): mix for address %s not registered", address.string()); |
| return BAD_VALUE; |
| } |
| |
| removeItemsAt(index); |
| return NO_ERROR; |
| } |
| |
| status_t AudioPolicyMixCollection::getAudioPolicyMix(String8 address, |
| sp<AudioPolicyMix> &policyMix) const |
| { |
| ssize_t index = indexOfKey(address); |
| if (index < 0) { |
| ALOGE("unregisterPolicyMixes(): mix for address %s not registered", address.string()); |
| return BAD_VALUE; |
| } |
| policyMix = valueAt(index); |
| return NO_ERROR; |
| } |
| |
| void AudioPolicyMixCollection::closeOutput(sp<SwAudioOutputDescriptor> &desc) |
| { |
| for (size_t i = 0; i < size(); i++) { |
| sp<AudioPolicyMix> policyMix = valueAt(i); |
| if (policyMix->getOutput() == desc) { |
| policyMix->clearOutput(); |
| } |
| } |
| } |
| |
| status_t AudioPolicyMixCollection::getOutputForAttr(audio_attributes_t attributes, uid_t uid, |
| sp<SwAudioOutputDescriptor> &desc) |
| { |
| ALOGV("getOutputForAttr() querying %zu mixes:", size()); |
| desc = 0; |
| for (size_t i = 0; i < size(); i++) { |
| sp<AudioPolicyMix> policyMix = valueAt(i); |
| AudioMix *mix = policyMix->getMix(); |
| |
| if (mix->mMixType == MIX_TYPE_PLAYERS) { |
| // TODO if adding more player rules (currently only 2), make rule handling "generic" |
| // as there is no difference in the treatment of usage- or uid-based rules |
| bool hasUsageMatchRules = false; |
| bool hasUsageExcludeRules = false; |
| bool usageMatchFound = false; |
| bool usageExclusionFound = false; |
| |
| bool hasUidMatchRules = false; |
| bool hasUidExcludeRules = false; |
| bool uidMatchFound = false; |
| bool uidExclusionFound = false; |
| |
| bool hasAddrMatch = false; |
| |
| // iterate over all mix criteria to list what rules this mix contains |
| for (size_t j = 0; j < mix->mCriteria.size(); j++) { |
| ALOGV(" getOutputForAttr: mix %zu: inspecting mix criteria %zu of %zu", |
| i, j, mix->mCriteria.size()); |
| |
| // if there is an address match, prioritize that match |
| if (strncmp(attributes.tags, "addr=", strlen("addr=")) == 0 && |
| strncmp(attributes.tags + strlen("addr="), |
| mix->mDeviceAddress.string(), |
| AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - strlen("addr=") - 1) == 0) { |
| hasAddrMatch = true; |
| break; |
| } |
| |
| switch (mix->mCriteria[j].mRule) { |
| case RULE_MATCH_ATTRIBUTE_USAGE: |
| ALOGV("\tmix has RULE_MATCH_ATTRIBUTE_USAGE for usage %d", |
| mix->mCriteria[j].mValue.mUsage); |
| hasUsageMatchRules = true; |
| if (mix->mCriteria[j].mValue.mUsage == attributes.usage) { |
| // found one match against all allowed usages |
| usageMatchFound = true; |
| } |
| break; |
| case RULE_EXCLUDE_ATTRIBUTE_USAGE: |
| ALOGV("\tmix has RULE_EXCLUDE_ATTRIBUTE_USAGE for usage %d", |
| mix->mCriteria[j].mValue.mUsage); |
| hasUsageExcludeRules = true; |
| if (mix->mCriteria[j].mValue.mUsage == attributes.usage) { |
| // found this usage is to be excluded |
| usageExclusionFound = true; |
| } |
| break; |
| case RULE_MATCH_UID: |
| ALOGV("\tmix has RULE_MATCH_UID for uid %d", mix->mCriteria[j].mValue.mUid); |
| hasUidMatchRules = true; |
| if (mix->mCriteria[j].mValue.mUid == uid) { |
| // found one UID match against all allowed UIDs |
| uidMatchFound = true; |
| } |
| break; |
| case RULE_EXCLUDE_UID: |
| ALOGV("\tmix has RULE_EXCLUDE_UID for uid %d", mix->mCriteria[j].mValue.mUid); |
| hasUidExcludeRules = true; |
| if (mix->mCriteria[j].mValue.mUid == uid) { |
| // found this UID is to be excluded |
| uidExclusionFound = true; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| // consistency checks: for each "dimension" of rules (usage, uid...), we can |
| // only have MATCH rules, or EXCLUDE rules in each dimension, not a combination |
| if (hasUsageMatchRules && hasUsageExcludeRules) { |
| ALOGE("getOutputForAttr: invalid combination of RULE_MATCH_ATTRIBUTE_USAGE" |
| " and RULE_EXCLUDE_ATTRIBUTE_USAGE in mix %zu", i); |
| return BAD_VALUE; |
| } |
| if (hasUidMatchRules && hasUidExcludeRules) { |
| ALOGE("getOutputForAttr: invalid combination of RULE_MATCH_UID" |
| " and RULE_EXCLUDE_UID in mix %zu", i); |
| return BAD_VALUE; |
| } |
| |
| if ((hasUsageExcludeRules && usageExclusionFound) |
| || (hasUidExcludeRules && uidExclusionFound)) { |
| break; // stop iterating on criteria because an exclusion was found (will fail) |
| } |
| |
| }//iterate on mix criteria |
| |
| // determine if exiting on success (or implicit failure as desc is 0) |
| if (hasAddrMatch || |
| !((hasUsageExcludeRules && usageExclusionFound) || |
| (hasUsageMatchRules && !usageMatchFound) || |
| (hasUidExcludeRules && uidExclusionFound) || |
| (hasUidMatchRules && !uidMatchFound))) { |
| ALOGV("\tgetOutputForAttr will use mix %zu", i); |
| desc = policyMix->getOutput(); |
| } |
| |
| } else if (mix->mMixType == MIX_TYPE_RECORDERS) { |
| if (attributes.usage == AUDIO_USAGE_VIRTUAL_SOURCE && |
| strncmp(attributes.tags, "addr=", strlen("addr=")) == 0 && |
| strncmp(attributes.tags + strlen("addr="), |
| mix->mDeviceAddress.string(), |
| AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - strlen("addr=") - 1) == 0) { |
| desc = policyMix->getOutput(); |
| } |
| } |
| if (desc != 0) { |
| desc->mPolicyMix = mix; |
| return NO_ERROR; |
| } |
| } |
| return BAD_VALUE; |
| } |
| |
| audio_devices_t AudioPolicyMixCollection::getDeviceAndMixForInputSource(audio_source_t inputSource, |
| audio_devices_t availDevices, |
| AudioMix **policyMix) |
| { |
| for (size_t i = 0; i < size(); i++) { |
| AudioMix *mix = valueAt(i)->getMix(); |
| |
| if (mix->mMixType != MIX_TYPE_RECORDERS) { |
| continue; |
| } |
| for (size_t j = 0; j < mix->mCriteria.size(); j++) { |
| if ((RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET == mix->mCriteria[j].mRule && |
| mix->mCriteria[j].mValue.mSource == inputSource) || |
| (RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET == mix->mCriteria[j].mRule && |
| mix->mCriteria[j].mValue.mSource != inputSource)) { |
| if (availDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) { |
| if (policyMix != NULL) { |
| *policyMix = mix; |
| } |
| return AUDIO_DEVICE_IN_REMOTE_SUBMIX; |
| } |
| break; |
| } |
| } |
| } |
| return AUDIO_DEVICE_NONE; |
| } |
| |
| status_t AudioPolicyMixCollection::getInputMixForAttr(audio_attributes_t attr, AudioMix **policyMix) |
| { |
| if (strncmp(attr.tags, "addr=", strlen("addr=")) != 0) { |
| return BAD_VALUE; |
| } |
| String8 address(attr.tags + strlen("addr=")); |
| |
| #ifdef LOG_NDEBUG |
| ALOGV("getInputMixForAttr looking for address %s\n mixes available:", address.string()); |
| for (size_t i = 0; i < size(); i++) { |
| sp<AudioPolicyMix> policyMix = valueAt(i); |
| AudioMix *mix = policyMix->getMix(); |
| ALOGV("\tmix %zu address=%s", i, mix->mDeviceAddress.string()); |
| } |
| #endif |
| |
| ssize_t index = indexOfKey(address); |
| if (index < 0) { |
| ALOGW("getInputMixForAttr() no policy for address %s", address.string()); |
| return BAD_VALUE; |
| } |
| sp<AudioPolicyMix> audioPolicyMix = valueAt(index); |
| AudioMix *mix = audioPolicyMix->getMix(); |
| |
| if (mix->mMixType != MIX_TYPE_PLAYERS) { |
| ALOGW("getInputMixForAttr() bad policy mix type for address %s", address.string()); |
| return BAD_VALUE; |
| } |
| *policyMix = mix; |
| return NO_ERROR; |
| } |
| |
| }; //namespace android |
