75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "mediapipe/framework/port/canonical_errors.h"
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#include "mediapipe/framework/port/logging.h"
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#include "mediapipe/framework/port/statusor.h"
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#include "mediapipe/framework/profiler/profiler_resource_util.h"
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#include "mediapipe/java/com/google/mediapipe/framework/jni/jni_util.h"
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namespace mediapipe {
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StatusOr<std::string> GetDefaultTraceLogDirectory() {
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// The path to external storage directory on a device doesn't change when an
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// application is running, hence can be stored as global state.
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static const StatusOr<std::string>* kExternalStorageDirectory = [] {
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StatusOr<std::string>* result = new StatusOr<std::string>();
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bool has_jvm = java::HasJavaVM();
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if (!has_jvm) {
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*result = absl::InternalError("JavaVM not available.");
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return result;
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}
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JNIEnv* env = java::GetJNIEnv();
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if (!env) {
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*result = absl::InternalError("JNIEnv not available.");
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return result;
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}
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// Get the class android.os.Environment.
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jclass environment_class = env->FindClass("android/os/Environment");
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// Get the id of the getExternalStorageDirectory method of the Android
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// Environment class.
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jmethodID environment_class_getExternalStorageDirectory =
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env->GetStaticMethodID(environment_class, "getExternalStorageDirectory",
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"()Ljava/io/File;");
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// Call android.os.Environment.getExternalStorageDirectory().
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jobject storage_directory = env->CallStaticObjectMethod(
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environment_class, environment_class_getExternalStorageDirectory);
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// Get the class java.io.File.
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jclass file_class = env->FindClass("java/io/File");
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// Get the id of the getAbsolutePath method of the File class.
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jmethodID file_class_getAbsolutePath =
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env->GetMethodID(file_class, "getAbsolutePath", "()Ljava/lang/String;");
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// Call getAbsolutePath() on the storage_directory.
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jobject jpath =
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env->CallObjectMethod(storage_directory, file_class_getAbsolutePath);
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// Return the path of the external storage directory as an std::string
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// object.
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*result = std::string(
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android::JStringToStdString(env, static_cast<jstring>(jpath)));
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return result;
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}();
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return *kExternalStorageDirectory;
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}
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} // namespace mediapipe
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