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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "base/scoped_native_library.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "media/media_buildflags.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
#include "third_party/widevine/cdm/buildflags.h"
#include "third_party/widevine/cdm/widevine_cdm_common.h"
#if BUILDFLAG(ENABLE_LIBRARY_CDMS)
#include "media/cdm/cdm_paths.h"
#include "media/cdm/clear_key_cdm_common.h"
#endif
namespace {
#if BUILDFLAG(ENABLE_LIBRARY_CDMS)
constexpr char kMetricLibrarySizeBytes[] = "library_size";
constexpr char kMetricTimeToLoadLibraryMs[] = "time_to_load_library";
perf_test::PerfResultReporter SetUpReporter(const std::string& story) {
perf_test::PerfResultReporter reporter("", story);
reporter.RegisterImportantMetric(kMetricLibrarySizeBytes, "bytes");
reporter.RegisterImportantMetric(kMetricTimeToLoadLibraryMs, "ms");
return reporter;
}
// Measures the size (bytes) and time to load (sec) of a native library.
// |library_relative_dir| is the relative path based on DIR_MODULE.
void MeasureSizeAndTimeToLoadNativeLibrary(
const base::FilePath& library_relative_dir,
const base::FilePath& library_name) {
// External ClearKey is a loadable_module used only in tests, and the Widevine
// CDM is copied to the output directory. Both can be considered generated
// test data even though one is production code.
base::FilePath output_dir;
ASSERT_TRUE(
base::PathService::Get(base::DIR_OUT_TEST_DATA_ROOT, &output_dir));
output_dir = output_dir.Append(library_relative_dir);
base::FilePath library_path = output_dir.Append(library_name);
ASSERT_TRUE(base::PathExists(library_path)) << library_path.value();
std::optional<int64_t> size = base::GetFileSize(library_path);
ASSERT_TRUE(size.has_value());
auto reporter = SetUpReporter(library_name.AsUTF8Unsafe());
reporter.AddResult(kMetricLibrarySizeBytes,
static_cast<size_t>(size.value()));
base::NativeLibraryLoadError error;
base::TimeTicks start = base::TimeTicks::Now();
base::NativeLibrary native_library =
base::LoadNativeLibrary(library_path, &error);
double delta = (base::TimeTicks::Now() - start).InMillisecondsF();
ASSERT_TRUE(native_library) << "Error loading library: " << error.ToString();
base::UnloadNativeLibrary(native_library);
reporter.AddResult(kMetricTimeToLoadLibraryMs, delta);
}
void MeasureSizeAndTimeToLoadCdm(const std::string& cdm_base_dir,
const std::string& cdm_name) {
MeasureSizeAndTimeToLoadNativeLibrary(
media::GetPlatformSpecificDirectory(cdm_base_dir),
base::FilePath::FromUTF8Unsafe(cdm_name));
}
#endif // BUILDFLAG(ENABLE_LIBRARY_CDMS)
} // namespace
#if BUILDFLAG(ENABLE_LIBRARY_CDMS)
#if BUILDFLAG(ENABLE_WIDEVINE)
TEST(LoadCDMPerfTest, Widevine) {
MeasureSizeAndTimeToLoadCdm(
kWidevineCdmBaseDirectory,
base::GetNativeLibraryName(kWidevineCdmLibraryName));
}
#endif // BUILDFLAG(ENABLE_WIDEVINE)
TEST(LoadCDMPerfTest, ExternalClearKey) {
MeasureSizeAndTimeToLoadCdm(
media::kClearKeyCdmBaseDirectory,
base::GetLoadableModuleName(media::kClearKeyCdmLibraryName));
}
#endif // BUILDFLAG(ENABLE_LIBRARY_CDMS)
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