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65 lines
1.7 KiB
65 lines
1.7 KiB
/* |
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* Copyright (C) 2017 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@1.0-SharedLibrary" |
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#include <dlfcn.h> |
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#include <media/stagefright/foundation/ADebug.h> |
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#include "SharedLibrary.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_0 { |
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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_0 |
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} // namespace cas |
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} // namespace hardware |
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} // namespace android
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