54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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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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*/
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#include <android/asset_manager.h>
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#include <android/asset_manager_jni.h>
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#include <jni.h>
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#include <media/NdkMediaExtractor.h>
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#include <nativehelper/ScopedUtfChars.h>
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#include <thread>
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extern "C" JNIEXPORT void JNICALL
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Java_android_media_cts_MediaExtractorDeviceSideTest_extractUsingNdkMediaExtractor(
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JNIEnv* env, jobject, jobject assetManager, jstring assetPath, jboolean withAttachedJvm) {
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ScopedUtfChars scopedPath(env, assetPath);
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AAssetManager* nativeAssetManager = AAssetManager_fromJava(env, assetManager);
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AAsset* asset = AAssetManager_open(nativeAssetManager, scopedPath.c_str(), AASSET_MODE_RANDOM);
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off_t start;
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off_t length;
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int fd = AAsset_openFileDescriptor(asset, &start, &length);
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auto mediaExtractorTask = [=]() {
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AMediaExtractor* mediaExtractor = AMediaExtractor_new();
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AMediaExtractor_setDataSourceFd(mediaExtractor, fd, start, length);
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AMediaExtractor_delete(mediaExtractor);
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};
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if (withAttachedJvm) {
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// The currently running thread is a Java thread so it has an attached JVM.
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mediaExtractorTask();
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} else {
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// We want to run the MediaExtractor calls on a thread with no JVM, so we spawn a new native
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// thread which will not have an associated JVM. We execute the MediaExtractor calls on the
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// new thread, and immediately join its execution so as to wait for its completion.
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std::thread(mediaExtractorTask).join();
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}
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// TODO: Make resource management automatic through scoped handles.
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close(fd);
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AAsset_close(asset);
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}
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