Stream.cpp revision 20f06f996337c9bf79d0b112083f6427a122ebab
120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie/* 220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * Copyright (C) 2015 The Android Open Source Project 320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * 420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * Licensed under the Apache License, Version 2.0 (the "License"); 520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * you may not use this file except in compliance with the License. 620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * You may obtain a copy of the License at 720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * 820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * http://www.apache.org/licenses/LICENSE-2.0 920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * 1020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * Unless required by applicable law or agreed to in writing, software 1120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * distributed under the License is distributed on an "AS IS" BASIS, 1220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * See the License for the specific language governing permissions and 1420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie * limitations under the License. 1520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie */ 1620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 1720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie#define LOG_TAG "APM::AudioPolicyEngine/Stream" 1820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 1920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie#include "Stream.h" 2020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie#include <system/audio.h> 2120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 2220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffieusing std::string; 2320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 2420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffienamespace android 2520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 2620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffienamespace audio_policy 2720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 2820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 2920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffiestatus_t Element<audio_stream_type_t>::setIdentifier(audio_stream_type_t identifier) 3020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 3120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (identifier > AUDIO_STREAM_CNT) { 3220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return BAD_VALUE; 3320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 3420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie mIdentifier = identifier; 3520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGD("%s: Stream %s identifier 0x%X", __FUNCTION__, getName().c_str(), identifier); 3620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return NO_ERROR; 3720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 3820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 3920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie/** 4020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* Set the strategy to follow for this stream. 4120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* It checks if the strategy is valid. 4220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* 4320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* @param[in] strategy to be followed. 4420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* 4520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie* @return NO_ERROR if the strategy is set correctly, error code otherwise. 4620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie*/ 4720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffietemplate <> 4820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffiestatus_t Element<audio_stream_type_t>::set<routing_strategy>(routing_strategy strategy) 4920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 5020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (strategy >= NUM_STRATEGIES) { 5120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return BAD_VALUE; 5220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 5320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie mApplicableStrategy = strategy; 5420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGD("%s: 0x%X for Stream %s", __FUNCTION__, strategy, getName().c_str()); 5520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return NO_ERROR; 5620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 5720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 5820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffietemplate <> 5920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffierouting_strategy Element<audio_stream_type_t>::get<routing_strategy>() const 6020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 6120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGV("%s: 0x%X for Stream %s", __FUNCTION__, mApplicableStrategy, getName().c_str()); 6220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return mApplicableStrategy; 6320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 6420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 6520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffiestatus_t Element<audio_stream_type_t>::setVolumeProfile(Volume::device_category category, 6620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie const VolumeCurvePoints &points) 6720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 6820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGD("%s: adding volume profile for %s for device category %d, points nb =%d", __FUNCTION__, 6920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie getName().c_str(), category, points.size()); 7020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie mVolumeProfiles[category] = points; 7120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 7220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie for (size_t i = 0; i < points.size(); i++) { 7320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGV("%s: %s cat=%d curve index =%d Index=%d dBAttenuation=%f", 7420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie __FUNCTION__, getName().c_str(), category, i, points[i].mIndex, 7520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie points[i].mDBAttenuation); 7620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 7720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return NO_ERROR; 7820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 7920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 8020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffiestatus_t Element<audio_stream_type_t>::initVolume(int indexMin, int indexMax) 8120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 8220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGV("initStreamVolume() stream %s, min %d, max %d", getName().c_str(), indexMin, indexMax); 8320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (indexMin < 0 || indexMin >= indexMax) { 8420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGW("initStreamVolume() invalid index limits for stream %s, min %d, max %d", 8520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie getName().c_str(), indexMin, indexMax); 8620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return BAD_VALUE; 8720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 8820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie mIndexMin = indexMin; 8920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie mIndexMax = indexMax; 9020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 9120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return NO_ERROR; 9220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 9320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 9420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffiefloat Element<audio_stream_type_t>::volIndexToDb(Volume::device_category deviceCategory, 9520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie int indexInUi) 9620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie{ 9720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie VolumeProfileConstIterator it = mVolumeProfiles.find(deviceCategory); 9820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (it == mVolumeProfiles.end()) { 9920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGE("%s: device category %d not found for stream %s", __FUNCTION__, deviceCategory, 10020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie getName().c_str()); 10120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return 1.0f; 10220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 10320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie const VolumeCurvePoints curve = mVolumeProfiles[deviceCategory]; 10420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (curve.size() != Volume::VOLCNT) { 10520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGE("%s: invalid profile for category %d and for stream %s", __FUNCTION__, deviceCategory, 10620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie getName().c_str()); 10720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return 1.0f; 10820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 10920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 11020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie // the volume index in the UI is relative to the min and max volume indices for this stream type 11120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie int nbSteps = 1 + curve[Volume::VOLMAX].mIndex - 11220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[Volume::VOLMIN].mIndex; 11320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 11420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (mIndexMax - mIndexMin == 0) { 11520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGE("%s: Invalid volume indexes Min=Max=%d", __FUNCTION__, mIndexMin); 11620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return 1.0f; 11720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 11820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie int volIdx = (nbSteps * (indexInUi - mIndexMin)) / 11920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie (mIndexMax - mIndexMin); 12020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 12120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie // find what part of the curve this index volume belongs to, or if it's out of bounds 12220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie int segment = 0; 12320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie if (volIdx < curve[Volume::VOLMIN].mIndex) { // out of bounds 12420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return 0.0f; 12520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } else if (volIdx < curve[Volume::VOLKNEE1].mIndex) { 12620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie segment = 0; 12720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } else if (volIdx < curve[Volume::VOLKNEE2].mIndex) { 12820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie segment = 1; 12920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } else if (volIdx <= curve[Volume::VOLMAX].mIndex) { 13020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie segment = 2; 13120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } else { // out of bounds 13220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return 1.0f; 13320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie } 13420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 13520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie // linear interpolation in the attenuation table in dB 13620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie float decibels = curve[segment].mDBAttenuation + 13720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ((float)(volIdx - curve[segment].mIndex)) * 13820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ( (curve[segment+1].mDBAttenuation - 13920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment].mDBAttenuation) / 14020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ((float)(curve[segment+1].mIndex - 14120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment].mIndex)) ); 14220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 14320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie ALOGV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f]", 14420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment].mIndex, volIdx, 14520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment+1].mIndex, 14620f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment].mDBAttenuation, 14720f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie decibels, 14820f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie curve[segment+1].mDBAttenuation); 14920f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 15020f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie return decibels; 15120f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} 15220f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 15320f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} // namespace audio_policy 15420f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie} // namespace android 15520f06f996337c9bf79d0b112083f6427a122ebabFrançois Gaffie 156