Re-implementation of Android's MediaPlayer and audio effect classes based on OpenSL ES APIs.

I decided to develop this library to solve these frustrations.

• Android OS does not permit to create extension of AudioEffect in application layer
• OpenSL ES is a primitive API sets, and it is difficult to use than MediaPlayer class in Java
• Visualizer provides very poor quality captured data (8 bit, monaural, 1024 samples/capture, 20 sampling/second)
• Visualizer does not work properly on some devices
  • android Issue 64423 "Visualizer with audio session 0 does not always receive all of output mix"
  • felixpalmer/android-visualizer "Visualization does not work on the new Galaxy devices"
  • Music Visualizer "Limitations on Galaxy S3, S4 and Note 3 (Snapdragon Quad core model)"
  • Music Visualizer "Limitations on Nexus 4, 5, and 7 (2013)"
• Android's MediaPlayer and audio effect classes are buggy...

• Provides both C++ and Java API sets
• Smooth fade in/out when starts/pauses playback
• High quality resampler
• 10 bands graphic equalizer & pre. amplifier
• High quality Visualizer class (floating point, stereo, 32k samples/capture, 60 sampling/second)

• Does not support video playback, audio only ( Please use MediaPlayer or ExoPlayer for video playback)
• Consumes more CPU resources than standard MediaPlayer and other OpenSL based audio player products (ex. PowerAmp)

• Highly compatibility with standard MediaPlayer and audio effect classes
• Implements a lot of workarounds, more better behavior and well-tested (Standard* prefixed API classes)
• Provides Hybrid media player factory which is a player using OpenSL ES for decoding audio and using AudioTrack for playback. This is the most recommended MediaPlayer because it provides more tolerance for audio glitches than OpenSLMediaPlayer but it can use all features of OpenSLMediaPlayer!
• Provides some compatibility class or methods for older devices
• NEON/SSE optimized

• Android API level 14+ (since this library depends decoding feature introduced from API level 14)

• Version 0.7.0 (July 18, 2016)

See GitHub Pages site of this project.

1. Add these lines to build.gradle of your project

dependencies {
    compile 'com.h6ah4i.android:openslmediaplayer:0.7.0'
}

2. That's all ;)

If you want to build from source or want to build with ADT (Eclipse), please refer to this article.

Refer to Wiki and JavaDoc.

• More optimize
• Improve JavaDoc comments

This library is licensed under the Apache Software License, Version 2.0, and contains some source code files delivered from product of Android Open Source Project (AOSP). See AOSP.md for details.

Note that this library uses some third party libraries, so you also have to take care of their licenses.

See LICENSE for full of the license text.

Copyright (C) 2014-2015 Haruki Hasegawa

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.

These libraries are licensed under the Apache Software License, Version 2.0.

• cxxdasp
• cxxporthelper
• lockfreedatastructure
• OpenSL ES CXX

This library is licensed under the FFTPACK5 Software License.

• PFFFT
• PFFFT (h6a h4i forked version)

This library is licensed under the BSD 3-Clause license.

• Ne10