blob: 1a2a15ea2ea7a93ad2cc5223e8e18866c8a7e603 [file] [log] [blame]
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cdm/external_clear_key_test_helper.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "build/build_config.h"
#include "media/cdm/api/content_decryption_module.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
// INITIALIZE_CDM_MODULE is a macro in api/content_decryption_module.h.
// However, we need to pass it as a string to GetFunctionPointer() once it
// is expanded.
#define STRINGIFY(X) #X
#define MAKE_STRING(X) STRINGIFY(X)
// File name of the External ClearKey CDM on different platforms.
const base::FilePath::CharType kExternalClearKeyCdmFileName[] =
#if defined(OS_MACOSX)
FILE_PATH_LITERAL("libclearkeycdm.dylib");
#elif defined(OS_WIN)
FILE_PATH_LITERAL("clearkeycdm.dll");
#else // OS_LINUX, etc.
FILE_PATH_LITERAL("libclearkeycdm.so");
#endif
ExternalClearKeyTestHelper::ExternalClearKeyTestHelper() {
LoadLibrary();
}
ExternalClearKeyTestHelper::~ExternalClearKeyTestHelper() {
UnloadLibrary();
}
void ExternalClearKeyTestHelper::LoadLibrary() {
// Determine the location of the CDM. It is expected to be in the same
// directory as the current module.
base::FilePath current_module_dir;
ASSERT_TRUE(PathService::Get(base::DIR_MODULE, &current_module_dir));
library_path_ =
current_module_dir.Append(base::FilePath(kExternalClearKeyCdmFileName));
ASSERT_TRUE(base::PathExists(library_path_)) << library_path_.value();
// Now load the CDM library.
base::NativeLibraryLoadError error;
library_.Reset(base::LoadNativeLibrary(library_path_, &error));
ASSERT_TRUE(library_.is_valid()) << error.ToString();
// Call INITIALIZE_CDM_MODULE()
typedef void (*InitializeCdmFunc)();
InitializeCdmFunc initialize_cdm_func = reinterpret_cast<InitializeCdmFunc>(
library_.GetFunctionPointer(MAKE_STRING(INITIALIZE_CDM_MODULE)));
ASSERT_TRUE(initialize_cdm_func) << "No INITIALIZE_CDM_MODULE in library";
initialize_cdm_func();
}
void ExternalClearKeyTestHelper::UnloadLibrary() {
// Call DeinitializeCdmModule()
typedef void (*DeinitializeCdmFunc)();
DeinitializeCdmFunc deinitialize_cdm_func =
reinterpret_cast<DeinitializeCdmFunc>(
library_.GetFunctionPointer("DeinitializeCdmModule"));
ASSERT_TRUE(deinitialize_cdm_func) << "No DeinitializeCdmModule() in library";
deinitialize_cdm_func();
}
} // namespace media