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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <media/TrackPlayerBase.h>
     18 
     19 namespace android {
     20 
     21 //--------------------------------------------------------------------------------------------------
     22 TrackPlayerBase::TrackPlayerBase() : PlayerBase(),
     23         mPlayerVolumeL(1.0f), mPlayerVolumeR(1.0f)
     24 {
     25     ALOGD("TrackPlayerBase::TrackPlayerBase()");
     26 }
     27 
     28 
     29 TrackPlayerBase::~TrackPlayerBase() {
     30     ALOGD("TrackPlayerBase::~TrackPlayerBase()");
     31     doDestroy();
     32 }
     33 
     34 void TrackPlayerBase::init(AudioTrack* pat, player_type_t playerType, audio_usage_t usage) {
     35     PlayerBase::init(playerType, usage);
     36     mAudioTrack = pat;
     37 }
     38 
     39 void TrackPlayerBase::destroy() {
     40     doDestroy();
     41     baseDestroy();
     42 }
     43 
     44 void TrackPlayerBase::doDestroy() {
     45     if (mAudioTrack != 0) {
     46         mAudioTrack->stop();
     47         // Note that there may still be another reference in post-unlock phase of SetPlayState
     48         mAudioTrack.clear();
     49     }
     50 }
     51 
     52 void TrackPlayerBase::setPlayerVolume(float vl, float vr) {
     53     {
     54         Mutex::Autolock _l(mSettingsLock);
     55         mPlayerVolumeL = vl;
     56         mPlayerVolumeR = vr;
     57     }
     58     doSetVolume();
     59 }
     60 
     61 //------------------------------------------------------------------------------
     62 // Implementation of IPlayer
     63 status_t TrackPlayerBase::playerStart() {
     64     status_t status = NO_INIT;
     65     if (mAudioTrack != 0) {
     66         status = mAudioTrack->start();
     67     }
     68     return status;
     69 }
     70 
     71 status_t TrackPlayerBase::playerPause() {
     72     status_t status = NO_INIT;
     73     if (mAudioTrack != 0) {
     74         mAudioTrack->pause();
     75         status = NO_ERROR;
     76     }
     77     return status;
     78 }
     79 
     80 
     81 status_t TrackPlayerBase::playerStop() {
     82     status_t status = NO_INIT;
     83     if (mAudioTrack != 0) {
     84         mAudioTrack->stop();
     85         status = NO_ERROR;
     86     }
     87     return status;
     88 }
     89 
     90 status_t TrackPlayerBase::playerSetVolume() {
     91     return doSetVolume();
     92 }
     93 
     94 status_t TrackPlayerBase::doSetVolume() {
     95     status_t status = NO_INIT;
     96     if (mAudioTrack != 0) {
     97         float tl = mPlayerVolumeL * mPanMultiplierL * mVolumeMultiplierL;
     98         float tr = mPlayerVolumeR * mPanMultiplierR * mVolumeMultiplierR;
     99         mAudioTrack->setVolume(tl, tr);
    100         status = NO_ERROR;
    101     }
    102     return status;
    103 }
    104 
    105 
    106 void TrackPlayerBase::applyVolumeShaper(
    107         const sp<VolumeShaper::Configuration>& configuration,
    108         const sp<VolumeShaper::Operation>& operation) {
    109     if (mAudioTrack != 0) {
    110         ALOGD("TrackPlayerBase::applyVolumeShaper() from IPlayer");
    111         VolumeShaper::Status status = mAudioTrack->applyVolumeShaper(configuration, operation);
    112         if (status < 0) { // a non-negative value is the volume shaper id.
    113             ALOGE("TrackPlayerBase::applyVolumeShaper() failed with status %d", status);
    114         }
    115     } else {
    116         ALOGD("TrackPlayerBase::applyVolumeShaper()"
    117                 " no AudioTrack for volume control from IPlayer");
    118     }
    119 }
    120 
    121 } // namespace android
    122