WebRTC KMP

WebRTC Kotlin Multiplatform SDK is a comprehensive toolkit for integrating WebRTC functionality into your multiplatform projects. It supports Android, iOS, JS. Other platforms - PRs are welcome.

API implementation map

API	Android	iOS	JS	JVM
Audio/Video	✅	✅	✅	✅
Data channel	✅	✅	✅	✅
Screen Capture	✅		✅	✅

WebRTC revision

Current revision: M114

Installation

The library is published to Maven Central.

Shared module build.gradle.kts

kotlin {
    cocoapods {
        version = "1.0.0"
        summary = "Shared module"
        homepage = "not published"
        ios.deploymentTarget = "11.0"

        pod("WebRTC-SDK") {
            version = "114.5735.02"
            linkOnly = true
        }

        podfile = project.file("../iosApp/Podfile")

        framework {
            baseName = "shared"
            export("com.shepeliev:webrtc-kmp:$webRtcKmpVersion")
            transitiveExport = true
        }

        xcodeConfigurationToNativeBuildType["CUSTOM_DEBUG"] = NativeBuildType.DEBUG
        xcodeConfigurationToNativeBuildType["CUSTOM_RELEASE"] = NativeBuildType.RELEASE
    }

    android()

    ios()
    iosSimulatorArm64()

    js {
        useCommonJs()
        browser()
    }

    jvm()

    sourceSets {
        val commonMain by getting {
            dependencies {
                api("com.shepeliev:webrtc-kmp:$webRtcKmpVersion")
            }
        }

        val iosMain by getting
        val iosSimulatorArm64Main by getting
        iosSimulatorArm64Main.dependsOn(iosMain)
    }
}

dependencies {
    // Choose the right architecture for your system
    // see https://github.com/devopvoid/webrtc-java for supported platforms
    val osName = System.getProperty("os.name").lowercase()
    val hostOS = if (osName.contains("mac")) {
        "macos"
    } else if (osName.contains("linux")) {
        "linux"
    } else if (osName.contains("windows")) {
        "windows"
    } else {
        throw IllegalStateException("Unsupported OS: $osName")
    }
    val hostArch = when (val arch = System.getProperty("os.arch").lowercase()) {
        "amd64" -> "x86_64"
        else -> arch
    }
    jvmMainImplementation(
        group = "dev.onvoid.webrtc",
        name = "webrtc-java",
        version = "0.8.0",
        classifier = "$hostOS-$hostArch"
    )
}

Also add the following to your Podfile in the target section:

use_frameworks!
pod 'shared', :path => '../shared'

Usage

Please refer to sample.

Screen Share in Android

// Set MediaProjection permission intent using `MediaProjectionIntentHolder`
val mediaProjectionPermissionLauncher = rememberLauncherForActivityResult(
    contract = ActivityResultContracts.StartActivityForResult()
) { activityResult ->
    activityResult.data?.also {
        MediaProjectionIntentHolder.intent = it
    }
}