optimized http

mobile/android/app/src/main/cpp/native_buffer.c

@@ -1,28 +1,38 @@
 #include <jni.h>
 #include <stdlib.h>
+#include <string.h>
 
 JNIEXPORT jlong JNICALL
-Java_app_alextran_immich_images_LocalImagesImpl_allocateNative(
+Java_app_alextran_immich_NativeBuffer_allocate(
         JNIEnv *env, jclass clazz, jint size) {
     void *ptr = malloc(size);
     return (jlong) ptr;
 }
 
 JNIEXPORT void JNICALL
-Java_app_alextran_immich_images_LocalImagesImpl_freeNative(
+Java_app_alextran_immich_NativeBuffer_free(
         JNIEnv *env, jclass clazz, jlong address) {
     free((void *) address);
 }
 
 JNIEXPORT jlong JNICALL
-Java_app_alextran_immich_images_LocalImagesImpl_reallocNative(
+Java_app_alextran_immich_NativeBuffer_realloc(
         JNIEnv *env, jclass clazz, jlong address, jint size) {
     void *ptr = realloc((void *) address, size);
     return (jlong) ptr;
 }
 
 JNIEXPORT jobject JNICALL
-Java_app_alextran_immich_images_LocalImagesImpl_wrapAsBuffer(
+Java_app_alextran_immich_NativeBuffer_wrap(
         JNIEnv *env, jclass clazz, jlong address, jint capacity) {
     return (*env)->NewDirectByteBuffer(env, (void *) address, capacity);
 }
+
+JNIEXPORT void JNICALL
+Java_app_alextran_immich_NativeBuffer_copy(
+        JNIEnv *env, jclass clazz, jobject buffer, jlong destAddress, jint offset, jint length) {
+    void *src = (*env)->GetDirectBufferAddress(env, buffer);
+    if (src != NULL) {
+        memcpy((void *) destAddress, (char *) src + offset, length);
+    }
+}

mobile/android/app/src/main/kotlin/app/alextran/immich/NativeBuffer.kt

@@ -0,0 +1,28 @@
+package app.alextran.immich
+
+import java.nio.ByteBuffer
+
+/**
+ * JNI interface for native memory operations.
+ * Used by HTTP responses and image processing to avoid copies.
+ */
+object NativeBuffer {
+  init {
+    System.loadLibrary("native_buffer")
+  }
+
+  @JvmStatic
+  external fun allocate(size: Int): Long
+
+  @JvmStatic
+  external fun free(address: Long)
+
+  @JvmStatic
+  external fun realloc(address: Long, size: Int): Long
+
+  @JvmStatic
+  external fun wrap(address: Long, capacity: Int): ByteBuffer
+
+  @JvmStatic
+  external fun copy(buffer: ByteBuffer, destAddress: Long, offset: Int, length: Int)
+}

mobile/android/app/src/main/kotlin/app/alextran/immich/images/LocalImagesImpl.kt

@@ -12,7 +12,7 @@ import android.provider.MediaStore.Images
 import android.provider.MediaStore.Video
 import android.util.Size
 import androidx.annotation.RequiresApi
-import java.nio.ByteBuffer
+import app.alextran.immich.NativeBuffer
 import kotlin.math.*
 import java.util.concurrent.Executors
 import com.bumptech.glide.Glide
@@ -44,9 +44,9 @@ inline fun ImageDecoder.Source.decodeBitmap(target: Size = Size(0, 0)): Bitmap {
 
 fun Bitmap.toNativeBuffer(): Map<String, Long>  {
   val size = width * height * 4
-  val pointer = LocalImagesImpl.allocateNative(size)
+  val pointer = NativeBuffer.allocate(size)
   try {
-    val buffer = LocalImagesImpl.wrapAsBuffer(pointer, size)
+    val buffer = NativeBuffer.wrap(pointer, size)
     copyPixelsToBuffer(buffer)
     recycle()
     return mapOf(
@@ -56,7 +56,7 @@ fun Bitmap.toNativeBuffer(): Map<String, Long>  {
       "rowBytes" to (width * 4).toLong()
     )
   } catch (e: Exception) {
-    LocalImagesImpl.freeNative(pointer)
+    NativeBuffer.free(pointer)
     recycle()
     throw e
   }
@@ -73,22 +73,6 @@ class LocalImagesImpl(context: Context) : LocalImageApi {
   companion object {
     val CANCELLED = Result.success<Map<String, Long>>(mapOf())
     val OPTIONS = BitmapFactory.Options().apply { inPreferredConfig = Bitmap.Config.ARGB_8888 }
-
-    init {
-      System.loadLibrary("native_buffer")
-    }
-
-    @JvmStatic
-    external fun allocateNative(size: Int): Long
-
-    @JvmStatic
-    external fun freeNative(pointer: Long)
-
-    @JvmStatic
-    external fun reallocNative(pointer: Long, size: Int): Long
-
-    @JvmStatic
-    external fun wrapAsBuffer(address: Long, capacity: Int): ByteBuffer
   }
 
   override fun getThumbhash(thumbhash: String, callback: (Result<Map<String, Long>>) -> Unit) {

mobile/android/app/src/main/kotlin/app/alextran/immich/images/RemoteImagesImpl.kt

@@ -2,41 +2,66 @@ package app.alextran.immich.images
 
 import android.content.Context
 import android.os.CancellationSignal
+import android.os.OperationCanceledException
 import app.alextran.immich.BuildConfig
+import app.alextran.immich.NativeBuffer
 import app.alextran.immich.core.SSLConfig
-import com.google.net.cronet.okhttptransport.CronetCallFactory
+import okhttp3.Cache
 import okhttp3.Call
 import okhttp3.Callback
+import okhttp3.ConnectionPool
+import okhttp3.Dispatcher
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
-import okhttp3.Cache
-import okhttp3.ConnectionPool
-import okhttp3.Dispatcher
 import org.chromium.net.CronetEngine
+import org.chromium.net.CronetException
+import org.chromium.net.UrlRequest
+import org.chromium.net.UrlResponseInfo
 import java.io.File
 import java.io.IOException
+import java.nio.ByteBuffer
 import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.Executors
 import java.util.concurrent.TimeUnit
-import okhttp3.Interceptor
+import java.util.concurrent.atomic.AtomicInteger
+import javax.net.ssl.SSLSocketFactory
+import javax.net.ssl.X509TrustManager
+import kotlin.concurrent.Volatile
 
-data class RemoteRequest(
-  val callback: (Result<Map<String, Long>>) -> Unit,
+
+private const val USER_AGENT = "Immich_Android_${BuildConfig.VERSION_NAME}"
+private const val MAX_REQUESTS_PER_HOST = 16
+private const val KEEP_ALIVE_CONNECTIONS = 10
+private const val KEEP_ALIVE_DURATION_MINUTES = 5L
+private const val CACHE_SIZE_BYTES = 1024L * 1024 * 1024
+private const val INITIAL_BUFFER_SIZE = 64 * 1024
+
+private class RemoteRequest(
   val cancellationSignal: CancellationSignal,
-  var pointer: Long = 0L,
 )
 
-class UserAgentInterceptor : Interceptor {
-  companion object {
-    const val USER_AGENT = "Immich_Android_${BuildConfig.VERSION_NAME}"
+private class NativeByteBuffer(initialCapacity: Int) {
+  var pointer = NativeBuffer.allocate(initialCapacity)
+  var capacity = initialCapacity
+  var offset = 0
+
+  fun ensureHeadroom(needed: Int = INITIAL_BUFFER_SIZE) {
+    if (offset + needed > capacity) {
+      capacity = (capacity * 2).coerceAtLeast(offset + needed)
+      pointer = NativeBuffer.realloc(pointer, capacity)
+    }
   }
 
-  override fun intercept(chain: Interceptor.Chain): Response {
-    return chain.proceed(
-      chain.request().newBuilder()
-        .header("User-Agent", USER_AGENT)
-        .build()
-    )
+  fun wrapRemaining() = NativeBuffer.wrap(pointer + offset, capacity - offset)
+
+  fun advance(bytesRead: Int) { offset += bytesRead }
+
+  fun free() {
+    if (pointer != 0L) {
+      NativeBuffer.free(pointer)
+      pointer = 0L
+    }
   }
 }
 
@@ -46,89 +71,46 @@ class RemoteImagesImpl(context: Context) : RemoteImageApi {
   init {
     appContext = context.applicationContext
     cacheDir = context.cacheDir
-    client = buildClient()
+    fetcher = buildFetcher()
   }
 
   companion object {
-    private const val MAX_REQUESTS_PER_HOST = 16
-    private const val KEEP_ALIVE_CONNECTIONS = 10
-    private const val KEEP_ALIVE_DURATION_MINUTES = 5L
-    private const val CACHE_SIZE_BYTES = 1024L * 1024 * 1024
-
-    private const val INITIAL_BUFFER_SIZE = 64 * 1024
-
     val CANCELLED = Result.success<Map<String, Long>>(emptyMap())
 
     private var appContext: Context? = null
     private var cacheDir: File? = null
-    private var client: Call.Factory? = null
-    private var cronetEngine: CronetEngine? = null
+    private var fetcher: ImageFetcher? = null
 
     init {
-      System.loadLibrary("native_buffer")
-      SSLConfig.addListener(::invalidateClient)
+      SSLConfig.addListener(::invalidateFetcher)
     }
 
-    private fun invalidateClient() {
-      (client as? OkHttpClient)?.let {
-        it.dispatcher.cancelAll()
-        it.connectionPool.evictAll()
-        it.cache?.close()
+    private fun invalidateFetcher() {
+      val oldFetcher = fetcher
+      val needsOkHttp = SSLConfig.requiresCustomSSL
+
+      fetcher = when {
+        // OkHttp → OkHttp: reconfigure, sharing cache/dispatcher
+        oldFetcher is OkHttpImageFetcher && needsOkHttp -> {
+          oldFetcher.reconfigure(SSLConfig.sslSocketFactory, SSLConfig.trustManager)
+        }
+        // Any other transition: graceful drain, create new
+        else -> {
+          oldFetcher?.drain()
+          buildFetcher()
+        }
       }
-      cronetEngine?.shutdown()
-      cronetEngine = null
-
-      client = buildClient()
     }
 
-    private fun buildClient(): Call.Factory {
+    private fun buildFetcher(): ImageFetcher {
+      val ctx = appContext ?: throw IllegalStateException("Context not set")
       val dir = cacheDir ?: throw IllegalStateException("Cache dir not set")
       return if (SSLConfig.requiresCustomSSL) {
-        buildOkHttpClient(dir)
+        OkHttpImageFetcher.create(dir, SSLConfig.sslSocketFactory, SSLConfig.trustManager)
       } else {
-        buildCronetClient(dir)
+        CronetImageFetcher(ctx, dir)
       }
     }
-
-    private fun buildCronetClient(cacheDir: File): Call.Factory {
-      val ctx = appContext ?: throw IllegalStateException("Context not set")
-      val storageDir = File(cacheDir, "cronet").apply { mkdirs() }
-      val engine = CronetEngine.Builder(ctx)
-        .enableHttp2(true)
-        .enableQuic(true)
-        .enableBrotli(true)
-        .setStoragePath(storageDir.absolutePath)
-//        .enableHttpCache(CronetEngine.Builder.HTTP_CACHE_DISK, CACHE_SIZE_BYTES)
-        .setUserAgent(UserAgentInterceptor.USER_AGENT)
-        .build()
-        .also { cronetEngine = it }
-
-      return CronetCallFactory.newBuilder(engine).build()
-    }
-
-    private fun buildOkHttpClient(cacheDir: File): OkHttpClient {
-      val dir = File(cacheDir, "okhttp")
-      val connectionPool = ConnectionPool(
-        maxIdleConnections = KEEP_ALIVE_CONNECTIONS,
-        keepAliveDuration = KEEP_ALIVE_DURATION_MINUTES,
-        timeUnit = TimeUnit.MINUTES
-      )
-
-      val builder = OkHttpClient.Builder()
-        .addInterceptor(UserAgentInterceptor())
-        .dispatcher(Dispatcher().apply { maxRequestsPerHost = MAX_REQUESTS_PER_HOST })
-        .connectionPool(connectionPool)
-
-      builder.cache(Cache((File(dir, "thumbnails")), CACHE_SIZE_BYTES))
-
-      val sslSocketFactory = SSLConfig.sslSocketFactory
-      val trustManager = SSLConfig.trustManager
-      if (sslSocketFactory != null && trustManager != null) {
-        builder.sslSocketFactory(sslSocketFactory, trustManager)
-      }
-
-      return builder.build()
-    }
   }
 
   override fun requestImage(
@@ -137,74 +119,300 @@ class RemoteImagesImpl(context: Context) : RemoteImageApi {
     requestId: Long,
     callback: (Result<Map<String, Long>>) -> Unit
   ) {
-    val client = client ?: return callback(Result.failure(RuntimeException("No client")))
+    val fetcher = fetcher ?: return callback(Result.failure(RuntimeException("No fetcher")))
     val signal = CancellationSignal()
-    val requestBuilder = Request.Builder().url(url)
-    headers.forEach(requestBuilder::addHeader)
-
-    val call = client.newCall(requestBuilder.build())
-    signal.setOnCancelListener(call::cancel)
-    val request = RemoteRequest(callback, signal)
+    val request = RemoteRequest(signal)
     requestMap[requestId] = request
+    fetcher.fetch(
+      url,
+      headers,
+      signal,
+      onSuccess = { buffer ->
+        requestMap.remove(requestId)
+        if (signal.isCanceled) {
+          NativeBuffer.free(buffer.pointer)
+          return@fetch callback(CANCELLED)
+        }
 
-    call.enqueue(object : Callback {
-      override fun onFailure(call: Call, e: IOException) {
+        callback(Result.success(mapOf(
+          "pointer" to buffer.pointer,
+          "length" to buffer.offset.toLong()
+        )))
+      },
+      onFailure = { e ->
         requestMap.remove(requestId)
         val result = if (signal.isCanceled) CANCELLED else Result.failure(e)
         callback(result)
       }
+    )
+  }
+
+  override fun cancelRequest(requestId: Long) {
+    requestMap.remove(requestId)?.cancellationSignal?.cancel()
+  }
+
+  override fun releaseImage(requestId: Long) {}
+}
+
+private sealed interface ImageFetcher {
+  fun fetch(
+    url: String,
+    headers: Map<String, String>,
+    signal: CancellationSignal,
+    onSuccess: (NativeByteBuffer) -> Unit,
+    onFailure: (Exception) -> Unit,
+  )
+
+  fun drain()
+}
+
+private class CronetImageFetcher(
+  context: Context,
+  cacheDir: File,
+) : ImageFetcher {
+  private val engine: CronetEngine
+  private val executor = Executors.newSingleThreadExecutor()
+  val active = AtomicInteger(0)
+  @Volatile
+  private var draining = false
+
+  init {
+    val storageDir = File(cacheDir, "cronet").apply { mkdirs() }
+    engine = CronetEngine.Builder(context)
+      .enableHttp2(true)
+      .enableQuic(true)
+      .enableBrotli(true)
+      .setStoragePath(storageDir.absolutePath)
+      .setUserAgent(USER_AGENT)
+      .enableHttpCache(CronetEngine.Builder.HTTP_CACHE_DISK, CACHE_SIZE_BYTES)
+      .build()
+  }
+
+  override fun fetch(
+    url: String,
+    headers: Map<String, String>,
+    signal: CancellationSignal,
+    onSuccess: (NativeByteBuffer) -> Unit,
+    onFailure: (Exception) -> Unit,
+  ) {
+    active.incrementAndGet()
+    if (draining) {
+      active.decrementAndGet()
+      throw IllegalStateException("Engine is draining")
+    }
+
+    val callback = FetchCallback(onSuccess, onFailure, ::onComplete)
+    val requestBuilder = engine.newUrlRequestBuilder(url, callback, executor)
+    headers.forEach { (key, value) -> requestBuilder.addHeader(key, value) }
+    val request = requestBuilder.build()
+    signal.setOnCancelListener { request.cancel() }
+    request.start()
+  }
+
+  private fun onComplete() {
+    // Runs on executor thread
+    active.decrementAndGet()
+    tryShutdown()
+  }
+
+  private fun tryShutdown() {
+    // Also on executor thread—no race with onRequestDone
+    if (draining && active.get() == 0) {
+      engine.shutdown()
+      executor.shutdown()
+    }
+  }
+
+  override fun drain() {
+    draining = true
+    // Post check to executor—runs after any already-queued callbacks
+    executor.execute(this::tryShutdown)
+  }
+
+  private class FetchCallback(
+    private val onSuccess: (NativeByteBuffer) -> Unit,
+    private val onFailure: (Exception) -> Unit,
+    private val onComplete: () -> Unit,
+  ) : UrlRequest.Callback() {
+    private var buffer: NativeByteBuffer? = null
+    private var httpError: IOException? = null
+
+    override fun onRedirectReceived(request: UrlRequest, info: UrlResponseInfo, newUrl: String) {
+      request.followRedirect()
+    }
+
+    override fun onResponseStarted(request: UrlRequest, info: UrlResponseInfo) {
+      if (info.httpStatusCode !in 200..299) {
+        httpError = IOException("HTTP ${info.httpStatusCode}: ${info.httpStatusText}")
+        return request.cancel()
+      }
+
+      // Pre-size from Content-Length when available, otherwise use reasonable default
+      val capacity = info.allHeaders["content-length"]?.firstOrNull()?.toIntOrNull()
+        ?.takeIf { it > 0 } ?: INITIAL_BUFFER_SIZE
+      buffer = NativeByteBuffer(capacity)
+      request.read(buffer!!.wrapRemaining())
+    }
+
+    override fun onReadCompleted(request: UrlRequest, info: UrlResponseInfo, byteBuffer: ByteBuffer) {
+      buffer!!.apply {
+        advance(byteBuffer.remaining())
+        ensureHeadroom()
+      }
+      request.read(buffer!!.wrapRemaining())
+    }
+
+    override fun onSucceeded(request: UrlRequest, info: UrlResponseInfo) {
+      onSuccess(buffer!!)
+      onComplete()
+    }
+
+    override fun onFailed(request: UrlRequest, info: UrlResponseInfo?, error: CronetException) {
+      buffer?.free()
+      onFailure(error)
+      onComplete()
+    }
+
+    override fun onCanceled(request: UrlRequest, info: UrlResponseInfo?) {
+      buffer?.free()
+      onFailure(httpError ?: OperationCanceledException())
+      onComplete()
+    }
+  }
+}
+
+private class OkHttpImageFetcher private constructor(
+  private val client: OkHttpClient,
+) : ImageFetcher {
+  private val active = AtomicInteger(0)
+  @Volatile private var draining = false
+
+  companion object {
+    fun create(
+      cacheDir: File,
+      sslSocketFactory: SSLSocketFactory?,
+      trustManager: X509TrustManager?,
+    ): OkHttpImageFetcher {
+      val dir = File(cacheDir, "okhttp")
+      val connectionPool = ConnectionPool(
+        maxIdleConnections = KEEP_ALIVE_CONNECTIONS,
+        keepAliveDuration = KEEP_ALIVE_DURATION_MINUTES,
+        timeUnit = TimeUnit.MINUTES
+      )
+
+      val builder = OkHttpClient.Builder()
+        .addInterceptor { chain ->
+          chain.proceed(
+            chain.request().newBuilder()
+              .header("User-Agent", USER_AGENT)
+              .build()
+          )
+        }
+        .dispatcher(Dispatcher().apply { maxRequestsPerHost = MAX_REQUESTS_PER_HOST })
+        .connectionPool(connectionPool)
+        .cache(Cache(File(dir, "thumbnails"), CACHE_SIZE_BYTES))
+
+      if (sslSocketFactory != null && trustManager != null) {
+        builder.sslSocketFactory(sslSocketFactory, trustManager)
+      }
+
+      return OkHttpImageFetcher(builder.build())
+    }
+  }
+
+  fun reconfigure(
+    sslSocketFactory: SSLSocketFactory?,
+    trustManager: X509TrustManager?,
+  ): OkHttpImageFetcher {
+    val builder = client.newBuilder()
+    if (sslSocketFactory != null && trustManager != null) {
+      builder.sslSocketFactory(sslSocketFactory, trustManager)
+    }
+    // Evict idle connections using old SSL config
+    client.connectionPool.evictAll()
+    return OkHttpImageFetcher(builder.build())
+  }
+
+  private fun onComplete() {
+    if (active.decrementAndGet() == 0 && draining) {
+      client.cache?.close()
+    }
+  }
+
+  override fun fetch(
+    url: String,
+    headers: Map<String, String>,
+    signal: CancellationSignal,
+    onSuccess: (NativeByteBuffer) -> Unit,
+    onFailure: (Exception) -> Unit,
+  ) {
+    active.incrementAndGet()
+    if (draining) {
+      active.decrementAndGet()
+      throw IllegalStateException("Client is draining")
+    }
+
+    val requestBuilder = Request.Builder().url(url)
+    headers.forEach { (key, value) -> requestBuilder.addHeader(key, value) }
+    val call = client.newCall(requestBuilder.build())
+    signal.setOnCancelListener { call.cancel() }
+
+    call.enqueue(object : Callback {
+      override fun onFailure(call: Call, e: IOException) {
+        onFailure(e)
+        onComplete()
+      }
 
       override fun onResponse(call: Call, response: Response) {
-        var pointer = 0L
-        var capacity: Int
         try {
-          signal.throwIfCanceled()
-          val body = response.takeIf { it.isSuccessful }?.body
-            ?: return callback(Result.failure(IOException(response.toString())))
+          response.use {
+            if (call.isCanceled()) {
+              return onFailure(OperationCanceledException())
+            }
 
-          val contentLength = body.contentLength()
-          capacity = if (contentLength > 0) contentLength.toInt() else INITIAL_BUFFER_SIZE
-          pointer = LocalImagesImpl.allocateNative(capacity)
-          request.pointer = pointer
+            if (!response.isSuccessful) {
+              return onFailure(IOException("HTTP ${response.code}: ${response.message}"))
+            }
 
-          var position = 0
-          body.source().use { source ->
-            while (!source.exhausted()) {
-              signal.throwIfCanceled()
-              if (position >= capacity) {
-                capacity = maxOf(capacity * 2, position + 8192)
-                pointer = LocalImagesImpl.reallocNative(pointer, capacity)
-                request.pointer = pointer
+            val body = response.body ?: return onFailure(IOException("Empty response body"))
+
+            val contentLength = body.contentLength()
+            val capacity = if (contentLength > 0 && contentLength <= Int.MAX_VALUE) {
+              contentLength.toInt()
+            } else {
+              INITIAL_BUFFER_SIZE
+            }
+            val buffer = NativeByteBuffer(capacity)
+
+            try {
+              body.source().use { source ->
+                while (true) {
+                  signal.throwIfCanceled()
+                  buffer.ensureHeadroom()
+                  val bytesRead = source.read(buffer.wrapRemaining())
+                  if (bytesRead == -1) break
+                  buffer.advance(bytesRead)
+                }
               }
-              val buffer = LocalImagesImpl.wrapAsBuffer(pointer + position, capacity - position)
-              val read = source.read(buffer)
-              if (read == -1) break
-              position += read
+
+              onSuccess(buffer)
+            } catch (e: Exception) {
+              buffer.free()
+              onFailure(e)
             }
           }
-
-          signal.throwIfCanceled()
-          request.pointer = 0L // Transfer ownership to Dart before callback
-          callback(Result.success(mapOf(
-            "pointer" to pointer,
-            "length" to position.toLong()
-          )))
-        } catch (e: Exception) {
-          if (pointer != 0L) LocalImagesImpl.freeNative(pointer)
-          val result = if (signal.isCanceled) CANCELLED else Result.failure(e)
-          callback(result)
         } finally {
-          requestMap.remove(requestId)
-          response.close()
+          onComplete()
         }
       }
     })
   }
 
-  override fun cancelRequest(requestId: Long) {
-    // Just cancel the signal - memory cleanup happens in onResponse/onFailure
-    requestMap[requestId]?.cancellationSignal?.cancel()
+  override fun drain() {
+    draining = true
+    client.connectionPool.evictAll()
+    if (active.get() == 0) {
+      client.cache?.close()
+    }
   }
-
-  override fun releaseImage(requestId: Long) {}
 }

mobile/android/app/src/main/kotlin/app/alextran/immich/images/ThumbHash.java

@@ -7,6 +7,8 @@ package app.alextran.immich.images;
 
 import java.nio.ByteBuffer;
 
+import app.alextran.immich.NativeBuffer;
+
 // modified to use native allocations
 public final class ThumbHash {
   /**
@@ -56,8 +58,8 @@ public final class ThumbHash {
     int w = Math.round(ratio > 1.0f ? 32.0f : 32.0f * ratio);
     int h = Math.round(ratio > 1.0f ? 32.0f / ratio : 32.0f);
     int size = w * h * 4;
-    long pointer = LocalImagesImpl.allocateNative(size);
-    ByteBuffer rgba = LocalImagesImpl.wrapAsBuffer(pointer, size);
+    long pointer = NativeBuffer.allocate(size);
+    ByteBuffer rgba = NativeBuffer.wrap(pointer, size);
     int cx_stop = Math.max(lx, hasAlpha ? 5 : 3);
     int cy_stop = Math.max(ly, hasAlpha ? 5 : 3);
     float[] fx = new float[cx_stop];