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66 lines
1.7 KiB
66 lines
1.7 KiB
/*
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* Copyright (C) 2019 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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//#define LOG_NDEBUG 0
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#define LOG_TAG "android.hardware.cas@1.1-SharedLibrary"
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#include "SharedLibrary.h"
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#include <dlfcn.h>
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#include <media/stagefright/foundation/ADebug.h>
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#include <utils/Log.h>
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namespace android {
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namespace hardware {
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namespace cas {
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namespace V1_1 {
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namespace implementation {
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SharedLibrary::SharedLibrary(const String8& path) {
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mLibHandle = dlopen(path.string(), RTLD_NOW);
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}
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SharedLibrary::~SharedLibrary() {
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if (mLibHandle != NULL) {
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dlclose(mLibHandle);
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mLibHandle = NULL;
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}
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}
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bool SharedLibrary::operator!() const {
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return mLibHandle == NULL;
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}
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void* SharedLibrary::lookup(const char* symbol) const {
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if (!mLibHandle) {
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return NULL;
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}
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// Clear last error before we load the symbol again,
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// in case the caller didn't retrieve it.
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(void)dlerror();
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return dlsym(mLibHandle, symbol);
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}
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const char* SharedLibrary::lastError() const {
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const char* error = dlerror();
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return error ? error : "No errors or unknown error";
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}
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} // namespace implementation
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} // namespace V1_1
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} // namespace cas
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} // namespace hardware
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} // namespace android
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