blob: 5116a337a9081767b86663c098e6dbff09889e74 [file] [log] [blame]
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <jni.h>
#include "base/android/apk_assets.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/file_descriptor_store.h"
#include "jni/ApkAssets_jni.h"
#include "starboard/types.h"
namespace base {
namespace android {
int OpenApkAsset(const std::string& file_path,
base::MemoryMappedFile::Region* region) {
// The AssetManager API of the NDK does not expose a method for accessing raw
// resources :(
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jlongArray> jarr = Java_ApkAssets_open(
env, base::android::ConvertUTF8ToJavaString(env, file_path));
std::vector<jlong> results;
base::android::JavaLongArrayToLongVector(env, jarr.obj(), &results);
CHECK_EQ(3U, results.size());
int fd = static_cast<int>(results[0]);
region->offset = results[1];
region->size = results[2];
return fd;
bool RegisterApkAssetWithFileDescriptorStore(const std::string& key,
const base::FilePath& file_path) {
base::MemoryMappedFile::Region region =
int asset_fd = OpenApkAsset(file_path.value(), &region);
if (asset_fd == -1)
return false;
base::FileDescriptorStore::GetInstance().Set(key, base::ScopedFD(asset_fd),
return true;
} // namespace android
} // namespace base