Add zstd-jni library

Android.bp

@@ -32,6 +32,8 @@ android_app {
         "com.google.android.material_material",
         "kotlinx-coroutines-android",
         "kotlinx-coroutines-core",
+        "seedvault-lib-zstd-jni",
+        "libzstd",
         // our own gradle module libs
         "seedvault-lib-core",
         "seedvault-lib-storage",

app/build.gradle.kts

@@ -180,6 +180,7 @@ dependencies {
     implementation(fileTree("${rootProject.rootDir}/libs/koin-android").include("*.jar"))
     implementation(fileTree("${rootProject.rootDir}/libs/koin-android").include("*.aar"))
 
+    implementation(fileTree("${rootProject.rootDir}/libs").include("zstd-jni-1.5.6-5.aar"))
     implementation(fileTree("${rootProject.rootDir}/libs").include("kotlin-bip39-jvm-1.0.6.jar"))
 
     implementation(fileTree("${rootProject.rootDir}/libs/dav4jvm").include("*.jar"))

app/src/main/java/com/stevesoltys/seedvault/settings/SettingsActivity.kt

@@ -6,15 +6,19 @@
 package com.stevesoltys.seedvault.settings
 
 import android.os.Bundle
+import android.util.Log
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.PreferenceFragmentCompat.OnPreferenceStartFragmentCallback
+import com.github.luben.zstd.ZstdOutputStream
 import com.stevesoltys.seedvault.R
 import com.stevesoltys.seedvault.ui.RequireProvisioningActivity
 import com.stevesoltys.seedvault.ui.RequireProvisioningViewModel
 import com.stevesoltys.seedvault.ui.recoverycode.ARG_FOR_NEW_CODE
 import com.stevesoltys.seedvault.ui.storage.StorageCheckFragment
 import org.koin.androidx.viewmodel.ext.android.viewModel
+import java.io.ByteArrayOutputStream
+import kotlin.random.Random
 
 internal const val ACTION_APP_STATUS_LIST = "com.stevesoltys.seedvault.APP_STATUS_LIST"
 private const val PREF_BACKUP_RECOVERY_CODE = "backup_recovery_code"
@@ -59,6 +63,15 @@ class SettingsActivity : RequireProvisioningActivity(), OnPreferenceStartFragmen
         }
     }
 
+    override fun onStart() {
+        super.onStart()
+        val stream = ByteArrayOutputStream()
+        ZstdOutputStream(stream).use {
+            it.write(Random.Default.nextBytes(1337))
+        }
+        Log.e("TEST", "1337 -> ${stream.size()}")
+    }
+
     override fun onPreferenceStartFragment(
         caller: PreferenceFragmentCompat,
         pref: Preference,

libs/Android.bp

@@ -3,6 +3,12 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
+android_library_import {
+    name: "seedvault-lib-zstd-jni",
+    aars: ["zstd-jni-1.5.6-5.aar"],
+    sdk_version: "current",
+}
+
 java_import {
     name: "seedvault-lib-kotlin-bip39",
     jars: ["kotlin-bip39-jvm-1.0.6.jar"],