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Diffstat (limited to 'services/audiopolicy/enginedefault/src/Gains.cpp')
| -rw-r--r-- | services/audiopolicy/enginedefault/src/Gains.cpp | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/services/audiopolicy/enginedefault/src/Gains.cpp b/services/audiopolicy/enginedefault/src/Gains.cpp new file mode 100644 index 0000000..a684fdd --- /dev/null +++ b/services/audiopolicy/enginedefault/src/Gains.cpp @@ -0,0 +1,247 @@ +/* + * 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::Gains" +//#define LOG_NDEBUG 0 + +//#define VERY_VERBOSE_LOGGING +#ifdef VERY_VERBOSE_LOGGING +#define ALOGVV ALOGV +#else +#define ALOGVV(a...) do { } while(0) +#endif + +#include "Gains.h" +#include <Volume.h> +#include <math.h> +#include <utils/String8.h> + +namespace android { + +// Enginedefault +const VolumeCurvePoint +Gains::sDefaultVolumeCurve[Volume::VOLCNT] = { + {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} +}; + + +const VolumeCurvePoint +Gains::sDefaultMediaVolumeCurve[Volume::VOLCNT] = { + {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sExtMediaSystemVolumeCurve[Volume::VOLCNT] = { + {1, -58.0f}, {20, -40.0f}, {60, -21.0f}, {100, -10.0f} +}; + +const VolumeCurvePoint +Gains::sSpeakerMediaVolumeCurve[Volume::VOLCNT] = { + {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sSpeakerMediaVolumeCurveDrc[Volume::VOLCNT] = { + {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sSpeakerSonificationVolumeCurve[Volume::VOLCNT] = { + {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sSpeakerSonificationVolumeCurveDrc[Volume::VOLCNT] = { + {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f} +}; + +// AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks +// AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets. +// AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java). +// The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. + +const VolumeCurvePoint +Gains::sDefaultSystemVolumeCurve[Volume::VOLCNT] = { + {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} +}; + +const VolumeCurvePoint +Gains::sDefaultSystemVolumeCurveDrc[Volume::VOLCNT] = { + {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f} +}; + +const VolumeCurvePoint +Gains::sHeadsetSystemVolumeCurve[Volume::VOLCNT] = { + {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} +}; + +const VolumeCurvePoint +Gains::sDefaultVoiceVolumeCurve[Volume::VOLCNT] = { + {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sSpeakerVoiceVolumeCurve[Volume::VOLCNT] = { + {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sLinearVolumeCurve[Volume::VOLCNT] = { + {0, -96.0f}, {33, -68.0f}, {66, -34.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint +Gains::sSilentVolumeCurve[Volume::VOLCNT] = { + {0, -96.0f}, {1, -96.0f}, {2, -96.0f}, {100, -96.0f} +}; + +const VolumeCurvePoint +Gains::sFullScaleVolumeCurve[Volume::VOLCNT] = { + {0, 0.0f}, {1, 0.0f}, {2, 0.0f}, {100, 0.0f} +}; + +const VolumeCurvePoint *Gains::sVolumeProfiles[AUDIO_STREAM_CNT] + [Volume::DEVICE_CATEGORY_CNT] = { + { // AUDIO_STREAM_VOICE_CALL + Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_SYSTEM + Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_RING + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_MUSIC + Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_ALARM + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_NOTIFICATION + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_BLUETOOTH_SCO + Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_ENFORCED_AUDIBLE + Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_DTMF + Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_TTS + // "Transmitted Through Speaker": always silent except on DEVICE_CATEGORY_SPEAKER + Gains::sSilentVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sLinearVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sSilentVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sSilentVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_ACCESSIBILITY + Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_REROUTING + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sFullScaleVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, + { // AUDIO_STREAM_PATCH + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_HEADSET + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_SPEAKER + Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_EARPIECE + Gains::sFullScaleVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA + }, +}; + +//static +float Gains::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, + int indexInUi) +{ + Volume::device_category deviceCategory = Volume::getDeviceCategory(device); + const VolumeCurvePoint *curve = streamDesc.getVolumeCurvePoint(deviceCategory); + + // the volume index in the UI is relative to the min and max volume indices for this stream type + int nbSteps = 1 + curve[Volume::VOLMAX].mIndex - + curve[Volume::VOLMIN].mIndex; + int volIdx = (nbSteps * (indexInUi - streamDesc.getVolumeIndexMin())) / + (streamDesc.getVolumeIndexMax() - streamDesc.getVolumeIndexMin()); + + // find what part of the curve this index volume belongs to, or if it's out of bounds + int segment = 0; + if (volIdx < curve[Volume::VOLMIN].mIndex) { // out of bounds + return 0.0f; + } else if (volIdx < curve[Volume::VOLKNEE1].mIndex) { + segment = 0; + } else if (volIdx < curve[Volume::VOLKNEE2].mIndex) { + segment = 1; + } else if (volIdx <= curve[Volume::VOLMAX].mIndex) { + segment = 2; + } else { // out of bounds + return 1.0f; + } + + // linear interpolation in the attenuation table in dB + float decibels = curve[segment].mDBAttenuation + + ((float)(volIdx - curve[segment].mIndex)) * + ( (curve[segment+1].mDBAttenuation - + curve[segment].mDBAttenuation) / + ((float)(curve[segment+1].mIndex - + curve[segment].mIndex)) ); + + float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) + + ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", + curve[segment].mIndex, volIdx, + curve[segment+1].mIndex, + curve[segment].mDBAttenuation, + decibels, + curve[segment+1].mDBAttenuation, + amplification); + + return amplification; +} + +}; // namespace android |