a4f6751e49
Add CAS hal definitions and default service implementation. bug: 22804304 Change-Id: I0a89608fe75c5f3c5e6888f9b771305742760707
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/*
|
|
* Copyright (C) 2017 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
//#define LOG_NDEBUG 0
|
|
#define LOG_TAG "android.hardware.cas@1.0-SharedLibrary"
|
|
|
|
#include <dlfcn.h>
|
|
#include <media/stagefright/foundation/ADebug.h>
|
|
#include "SharedLibrary.h"
|
|
#include <utils/Log.h>
|
|
|
|
namespace android {
|
|
namespace hardware {
|
|
namespace cas {
|
|
namespace V1_0 {
|
|
namespace implementation {
|
|
|
|
SharedLibrary::SharedLibrary(const String8 &path) {
|
|
mLibHandle = dlopen(path.string(), RTLD_NOW);
|
|
}
|
|
|
|
SharedLibrary::~SharedLibrary() {
|
|
if (mLibHandle != NULL) {
|
|
dlclose(mLibHandle);
|
|
mLibHandle = NULL;
|
|
}
|
|
}
|
|
|
|
bool SharedLibrary::operator!() const {
|
|
return mLibHandle == NULL;
|
|
}
|
|
|
|
void *SharedLibrary::lookup(const char *symbol) const {
|
|
if (!mLibHandle) {
|
|
return NULL;
|
|
}
|
|
// Clear last error before we load the symbol again,
|
|
// in case the caller didn't retrieve it.
|
|
(void)dlerror();
|
|
return dlsym(mLibHandle, symbol);
|
|
}
|
|
|
|
const char *SharedLibrary::lastError() const {
|
|
const char *error = dlerror();
|
|
return error ? error : "No errors or unknown error";
|
|
}
|
|
|
|
} // namespace implementation
|
|
} // namespace V1_0
|
|
} // namespace cas
|
|
} // namespace hardware
|
|
} // namespace android
|