TrackPlayerBase.cpp revision 8cf3a0788df2ee184b498086b1b8da322eeadcca 
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
19namespace android {
20
21using media::VolumeShaper;
22
23//--------------------------------------------------------------------------------------------------
24TrackPlayerBase::TrackPlayerBase() : PlayerBase(),
25        mPlayerVolumeL(1.0f), mPlayerVolumeR(1.0f)
26{
27    ALOGD("TrackPlayerBase::TrackPlayerBase()");
28}
29
30
31TrackPlayerBase::~TrackPlayerBase() {
32    ALOGD("TrackPlayerBase::~TrackPlayerBase()");
33    doDestroy();
34}
35
36void TrackPlayerBase::init(AudioTrack* pat, player_type_t playerType, audio_usage_t usage) {
37    PlayerBase::init(playerType, usage);
38    mAudioTrack = pat;
39}
40
41void TrackPlayerBase::destroy() {
42    doDestroy();
43    baseDestroy();
44}
45
46void TrackPlayerBase::doDestroy() {
47    if (mAudioTrack != 0) {
48        mAudioTrack->stop();
49        // Note that there may still be another reference in post-unlock phase of SetPlayState
50        mAudioTrack.clear();
51    }
52}
53
54void TrackPlayerBase::setPlayerVolume(float vl, float vr) {
55    {
56        Mutex::Autolock _l(mSettingsLock);
57        mPlayerVolumeL = vl;
58        mPlayerVolumeR = vr;
59    }
60    doSetVolume();
61}
62
63//------------------------------------------------------------------------------
64// Implementation of IPlayer
65status_t TrackPlayerBase::playerStart() {
66    status_t status = NO_INIT;
67    if (mAudioTrack != 0) {
68        status = mAudioTrack->start();
69    }
70    return status;
71}
72
73status_t TrackPlayerBase::playerPause() {
74    status_t status = NO_INIT;
75    if (mAudioTrack != 0) {
76        mAudioTrack->pause();
77        status = NO_ERROR;
78    }
79    return status;
80}
81
82
83status_t TrackPlayerBase::playerStop() {
84    status_t status = NO_INIT;
85    if (mAudioTrack != 0) {
86        mAudioTrack->stop();
87        status = NO_ERROR;
88    }
89    return status;
90}
91
92status_t TrackPlayerBase::playerSetVolume() {
93    return doSetVolume();
94}
95
96status_t TrackPlayerBase::doSetVolume() {
97    status_t status = NO_INIT;
98    if (mAudioTrack != 0) {
99        float tl = mPlayerVolumeL * mPanMultiplierL * mVolumeMultiplierL;
100        float tr = mPlayerVolumeR * mPanMultiplierR * mVolumeMultiplierR;
101        mAudioTrack->setVolume(tl, tr);
102        status = NO_ERROR;
103    }
104    return status;
105}
106
107
108binder::Status TrackPlayerBase::applyVolumeShaper(
109        const VolumeShaper::Configuration& configuration,
110        const VolumeShaper::Operation& operation) {
111
112    sp<VolumeShaper::Configuration> spConfiguration = new VolumeShaper::Configuration(configuration);
113    sp<VolumeShaper::Operation> spOperation = new VolumeShaper::Operation(operation);
114
115    if (mAudioTrack != 0) {
116        ALOGD("TrackPlayerBase::applyVolumeShaper() from IPlayer");
117        VolumeShaper::Status status = mAudioTrack->applyVolumeShaper(spConfiguration, spOperation);
118        if (status < 0) { // a non-negative value is the volume shaper id.
119            ALOGE("TrackPlayerBase::applyVolumeShaper() failed with status %d", status);
120        }
121        return binder::Status::fromStatusT(status);
122    } else {
123        ALOGD("TrackPlayerBase::applyVolumeShaper()"
124              " no AudioTrack for volume control from IPlayer");
125        return binder::Status::ok();
126    }
127}
128
129} // namespace android
130