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// Copyright 2014 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 <vector>
#include "base/logging.h"
#include "base/port.h"
#include "base/test/perf_test_suite.h"
#include "media/formats/mp2t/timestamp_unroller.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace mp2t {
static std::vector<int64> TruncateTimestamps(
const std::vector<int64>& timestamps) {
const int nbits = 33;
int64 truncate_mask = (GG_INT64_C(1) << nbits) - 1;
std::vector<int64> truncated_timestamps(timestamps.size());
for (size_t k = 0; k < timestamps.size(); k++)
truncated_timestamps[k] = timestamps[k] & truncate_mask;
return truncated_timestamps;
}
static void RunUnrollTest(const std::vector<int64>& timestamps) {
std::vector<int64> truncated_timestamps = TruncateTimestamps(timestamps);
TimestampUnroller timestamp_unroller;
for (size_t k = 0; k < timestamps.size(); k++) {
int64 unrolled_timestamp =
timestamp_unroller.GetUnrolledTimestamp(truncated_timestamps[k]);
EXPECT_EQ(timestamps[k], unrolled_timestamp);
}
}
TEST(TimestampUnrollerTest, SingleStream) {
// Array of 64 bit timestamps.
// This is the expected result from unrolling these timestamps
// truncated to 33 bits.
int64 timestamps[] = {
GG_INT64_C(0x0000000000000000),
GG_INT64_C(-190), // - 190
GG_INT64_C(0x00000000aaaaa9ed), // + 0xaaaaaaab
GG_INT64_C(0x0000000155555498), // + 0xaaaaaaab
GG_INT64_C(0x00000001ffffff43), // + 0xaaaaaaab
GG_INT64_C(0x00000002aaaaa9ee), // + 0xaaaaaaab
GG_INT64_C(0x0000000355555499), // + 0xaaaaaaab
GG_INT64_C(0x00000003ffffff44), // + 0xaaaaaaab
};
std::vector<int64> timestamps_vector(
timestamps, timestamps + arraysize(timestamps));
RunUnrollTest(timestamps_vector);
}
} // namespace mp2t
} // namespace media
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