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
AudioEffectin application layer - OpenSL ES is a primitive API sets, and it is difficult to use than
MediaPlayerclass in Java Visualizerprovides very poor quality captured data (8 bit, monaural, 1024 samples/capture, 20 sampling/second)Visualizerdoes 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
MediaPlayerorExoPlayerfor video playback) - Consumes more CPU resources than standard MediaPlayer and other AudioTrack/OpenSL based audio player products (ex. PowerAmp)
- Highly compatibility with standard
MediaPlayerandaudio 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
AudioTrackfor playback. This is the most recommendedMediaPlayerbecause it provides more tolerance for audio glitches thanOpenSLMediaPlayerbut it can use all features ofOpenSLMediaPlayer! - 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 0.7.5 (May 6, 2017)
See GitHub Pages site of this project.
- Add these lines to
build.gradleof your project
dependencies {
compile 'com.h6ah4i.android:openslmediaplayer:0.7.5'
}- That's all ;)
If you want to build this library from source, please refer to this article.
- 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.
This library is licensed under the FFTPACK5 Software License.
This library is licensed under the BSD 3-Clause license.