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https://github.com/siy1121/waveformviewdemo
Provides a view to display audio waveforms.
https://github.com/siy1121/waveformviewdemo
android android-library audio-visualizer kotlin-android
Last synced: about 2 months ago
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Provides a view to display audio waveforms.
- Host: GitHub
- URL: https://github.com/siy1121/waveformviewdemo
- Owner: SIY1121
- License: apache-2.0
- Created: 2018-03-08T12:54:15.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2021-08-06T13:42:05.000Z (over 3 years ago)
- Last Synced: 2023-03-05T22:59:24.852Z (almost 2 years ago)
- Topics: android, android-library, audio-visualizer, kotlin-android
- Language: Kotlin
- Homepage:
- Size: 6.94 MB
- Stars: 41
- Watchers: 5
- Forks: 16
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# WaveFormView
WaveFormView provides a view to display audio waveforms.
Generating waveforms at runtime, you don't have to prepare data in advance.
**Note : It takes a few seconds to generate**
# Screenshots
# Importing the Library
Add the following dependicity to your `build.gradle` file.
```
dependencies {
repositories {
jcenter()
}
compile 'space.siy:waveformview:1.0.0'
}
```
# Usage
You can see full code at [MainActivity.kt](https://github.com/SIY1121/WaveFormViewDemo/blob/master/app/src/main/java/space/siy/waveformviewdemo/MainActivity.kt)
```kotlin
//Open From Assets Folder
val afd = assets.openFd("jazz_in_paris.mp3")
//Build WaveFormData
WaveFormData.Factory(afd.fileDescriptor, afd.startOffset, afd.length)
.build(object : WaveFormData.Factory.Callback {
//When Complete, you can receive data and set to the view
override fun onComplete(waveFormData: WaveFormData) {
waveFormView.data = waveFormData
//Initialize MediaPlayer
val player = MediaPlayer()
player.setDataSource(afd.fileDescriptor, afd.startOffset, afd.length)
player.prepare()
player.start()
//Synchronize with MediaPlayer using WaveFormView.Callback
waveFormView.callback = object : WaveFormView.Callback {
override fun onPlayPause() {
if (player.isPlaying)
player.pause()
else
player.start()
}
override fun onSeek(pos: Long) {
player.seekTo(pos.toInt())
}
}
//You have to notify current position to the view
Handler().postDelayed(object : Runnable {
override fun run() {
waveFormView.position = player.currentPosition.toLong()
Handler().postDelayed(this, 20)
}
}, 20)
}
override fun onProgress(progress: Float) {
progressBar.progress = (progress*10).toInt()
}
})
```
# Customization
You can change block style via xml and program.
The following xml shows all attributes.
```xml
```
# Document
See [here](https://github.com/SIY1121/WaveFormViewDemo/blob/master/waveformview/build/markdown/space.siy.waveformview/index.md).
# Requirement
Supports Android 5.0+
WaveFormView uses MediaCodec supporting 5.0+ to generate waveform at runtime.
# Lisence
> Licensed under the Apache License, Version 2.0 (the "License");
> you may not use this work except in compliance with the License.
> You may obtain a copy of the License in the LICENSE file, or at:
>
> [http://www.apache.org/licenses/LICENSE-2.0](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.