HaishinKit for Android, iOS, macOS and tvOS.

• Camera and Microphone streaming library via RTMP for Android.
• API Documentation

💖 Sponsors

Do you need additional support? Technical support on Issues and Discussions is provided only to contributors and academic researchers of HaishinKit. By becoming a sponsor, we can provide the support you need.

Sponsor: $50 per month: Technical support via GitHub Issues/Discussions with priority response.

💬 Communication

• GitHub Issues and Discussions are open spaces for communication among users and are available to everyone as long as the code of conduct is followed.
• Whether someone is a contributor to HaishinKit is mainly determined by their GitHub profile icon. If you are using the default icon, there is a chance your input might be overlooked, so please consider setting a custom one. It could be a picture of your pet, for example. Personally, I like cats.
• If you want to support e-mail based communication without GitHub.
  • Consulting fee is $50/1 incident. I'm able to response a few days.

🌏 Related projects

Project name	Notes	License
HaishinKit for iOS, macOS and tvOS.	Camera and Microphone streaming library via RTMP for Android.	BSD 3-Clause "New" or "Revised" License
HaishinKit for Flutter.	Camera and Microphone streaming library via RTMP for Flutter.	BSD 3-Clause "New" or "Revised" License

🎨 Features

RTMP

• Authentication
• Publish
• Playback
• Action Message Format
  • AMF0
  • AMF3
• SharedObject
• RTMPS
  • Native (RTMP over SSL/TSL)
• Enhanced RTMP (Working in progress)
  • v1
  • v2
• Audio Codecs
  • AAC
• Video Codecs
  • H264, HEVC

Recording

Now support local recording. Additionally, you can specify separate videoSettings and audioSettings from the live stream.

val recorder: StreamRecorder by lazy { StreamRecorder(requireContext()) }
recorder.videoSettings.profileLevel = VideoCodecProfileLevel.HEVC_MAIN_3_1
recorder.attachStream(stream)
recorder.startRecording(
  File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "output.mp4").toString(),
  MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4
)

Filter

• Table Of Filters

Sources

• Single camera with Camera2 api
• Multi camera with Camera2 api
• MediaProjection
• Microphone with AudioRecord api.

View rendering

-	HkSurfaceView	HkTextureView
Engine	SurfaceView	TextureView
Playback	beta	beta
Publish	✅ Stable	✅ Stable
Note	Recommend Android 7.0+	Recommend Android 5.0-6.0

Others

• Hardware acceleration for H264 video encoding/AAC audio encoding.
  • Asynchronously processing.
• Graphics api
  • ✅ OpenGL
  • 🐛 Vulkan

Settings

stream.audioSettings.bitrate = 32 * 1000

stream.videoSettings.width = 640 // The width resoulution of video output.
stream.videoSettings.height = 360 // The height resoulution of video output.
stream.videoSettings.bitrate = 160 * 1000 // The bitRate of video output.
stream.videoSettings.IFrameInterval = 2 // The key-frmae interval

Offscreen Rendering.

Through off-screen rendering capabilities, it is possible to display any text or bitmap on a video during broadcasting or viewing. This allows for various applications such as watermarking and time display.

stream.attachVideo(cameraSource)

val text = Text()
text.textSize = 60f
text.textValue = "23:44:56"
text.layoutMargins.set(0, 0, 16, 16)
text.horizontalAlignment = ScreenObject.HORIZONTAL_ALIGNMENT_RIGHT
text.verticalAlignment = ScreenObject.VERTICAL_ALIGNMENT_BOTTOM
stream.screen.addChild(text)

val image = Image()
image.bitmap = BitmapFactory.decodeResource(resources, R.drawable.game_jikkyou)
image.verticalAlignment = ScreenObject.VERTICAL_ALIGNMENT_BOTTOM
image.frame.set(0, 0, 180, 180)
stream.screen.addChild(image)

🌏 Architecture Overview

Publishing Feature

🐾 Examples

Examples project are available for Android.

• Camera and microphone publish.
• RTMP Playback

git clone https://github.com/shogo4405/HaishinKit.kt.git
cd HaishinKit.kt
git submodule update --init

# Open [Android Studio] -> [Open] ...

🔧 Usage

Gradle dependency

JitPack

• A common mistake is trying to use implementation 'com.github.shogo4405.HaishinKit.kt', which does not work. The correct form is implementation 'com.github.shogo4405.HaishinKit~kt'.
• In older versions, there may be cases where Jetpack is not supported. If it's not available, please give up and use the latest version.

allprojects {
  repositories {
    maven { url 'https://jitpack.io' }
  }
}

dependencies {
  implementation 'com.github.shogo4405.HaishinKit~kt:haishinkit:x.x.x'
  implementation 'com.github.shogo4405.HaishinKit~kt:compose:x.x.x'
  implementation 'com.github.shogo4405.HaishinKit~kt:lottie:x.x.x'
  implementation 'com.github.shogo4405.HaishinKit~kt:vulkan:x.x.x'
}

Dependencies

-	minSdk	Android	Requirements	Status	Description
haishinkit	21+	5	Require	Stable	It's the base module for HaishinKit.
compose	21+	5	Optional	Beta	It's support for a composable component for HaishinKit.
lottie	21+	5	Optional	Beta	It's a module for embedding Lottie animations into live streaming video.
vulkan	26+	8	Optional	Technical preview	It's support for the Vulkan graphics engine.

Android manifest

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

Prerequisites

ActivityCompat.requestPermissions(this,arrayOf(
    Manifest.permission.CAMERA,
    Manifest.permission.RECORD_AUDIO
), 1)

RTMP Usage

Real Time Messaging Protocol (RTMP).

class CameraTabFragment : Fragment(), IEventListener {
    private lateinit var connection: RtmpConnection
    private lateinit var stream: RtmpStream
    private lateinit var cameraView: HkGLSurfaceView
    private lateinit var cameraSource: CameraSource

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        activity?.let {
            val permissionCheck = ContextCompat.checkSelfPermission(it, Manifest.permission.CAMERA)
            if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(it, arrayOf(Manifest.permission.CAMERA), 1)
            }
            if (ContextCompat.checkSelfPermission(
                    it,
                    Manifest.permission.RECORD_AUDIO
                ) != PackageManager.PERMISSION_GRANTED
            ) {
                ActivityCompat.requestPermissions(it, arrayOf(Manifest.permission.RECORD_AUDIO), 1)
            }
        }
        connection = RtmpConnection()
        stream = RtmpStream(connection)
        stream.attachAudio(AudioRecordSource())
        cameraSource = CameraSource(requireContext()).apply {
            open(CameraCharacteristics.LENS_FACING_BACK)
        }
        stream.attachVideo(cameraSource)
        connection.addEventListener(Event.RTMP_STATUS, this)
    }

    @SuppressLint("SetTextI18n")
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        val v = inflater.inflate(R.layout.fragment_camera, container, false)
        val button = v.findViewById<Button>(R.id.button)
        button.setOnClickListener {
            if (button.text == "Publish") {
                connection.connect(Preference.shared.rtmpURL)
                button.text = "Stop"
            } else {
                connection.close()
                button.text = "Publish"
            }
        }
        val switchButton = v.findViewById<Button>(R.id.switch_button)
        switchButton.setOnClickListener {
            cameraSource.switchCamera()
        }
        cameraView = v.findViewById(R.id.camera)
        cameraView.attachStream(stream)
        return v
    }

    override fun onDestroy() {
        super.onDestroy()
        connection.dispose()
    }

    override fun handleEvent(event: Event) {
        Log.i("$TAG#handleEvent", event.toString())
        val data = EventUtils.toMap(event)
        val code = data["code"].toString()
        if (code == RtmpConnection.Code.CONNECT_SUCCESS.rawValue) {
            stream.publish(Preference.shared.streamName)
        }
    }

    companion object {
        fun newInstance(): CameraTabFragment {
            return CameraTabFragment()
        }

        private val TAG = CameraTabFragment::class.java.simpleName
    }
}

Filter API (v0.1)

- [assets]
  - [shaders]
    - custom-shader.vert(optional)
    - custom-shader.frag

package my.custom.filter

import com.haishinkit.graphics.filter.VideoEffect

class Monochrome2VideoEffect(
    override val name: String = "custom-shader"
) : VideoEffect

stream.videoEffect = Monochrome2VideoEffect()

📓 FAQ

How can I compile the vulkan module with Android 5 project?

AndroidManifest.xml

<uses-sdk tools:overrideLibrary="com.haishinkit.vulkan" />

MainActivity

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    PixelTransformFactory.registerPixelTransform(VkPixelTransform::class)
}

RTMP URL Format

• rtmp://server-ip-address[:port]/application/[appInstance]/[prefix:[path1[/path2/]]]streamName
  • [] mark is an Optional.

  rtmpConneciton.connect("rtmp://server-ip-address[:port]/application/[appInstance]")
  rtmpStream.publish("[prefix:[path1[/path2/]]]streamName")
  

• rtmp://localhost/live/streamName

  rtmpConneciton.connect("rtmp://localhost/live")
  rtmpStream.publish("streamName")
  

Related Project

• HaishinKit.swift - Camera and Microphone streaming library via RTMP, HLS for iOS, macOS and tvOS.
  • https://github.com/shogo4405/HaishinKit.swift

📜 License

BSD-3-Clause