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// Copyright 2013 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/midi/message_util.h"
#include <stdint.h>
#include "base/macros.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace midi {
namespace {
const uint8_t kGMOn[] = {0xf0, 0x7e, 0x7f, 0x09, 0x01, 0xf7};
const uint8_t kGSOn[] = {
0xf0, 0x41, 0x10, 0x42, 0x12, 0x40, 0x00, 0x7f, 0x00, 0x41, 0xf7,
};
const uint8_t kNoteOn[] = {0x90, 0x3c, 0x7f};
const uint8_t kNoteOnWithRunningStatus[] = {
0x90, 0x3c, 0x7f, 0x3c, 0x7f, 0x3c, 0x7f,
};
const uint8_t kNoteOnWithRealTimeClock[] = {
0x90, 0xf8, 0x3c, 0x7f, 0x90, 0xf8, 0x3c, 0xf8, 0x7f, 0xf8,
};
const uint8_t kGMOnWithRealTimeClock[] = {
0xf0, 0xf8, 0x7e, 0x7f, 0x09, 0x01, 0xf8, 0xf7,
};
const uint8_t kSystemCommonMessageReserved1[] = {0xf4};
const uint8_t kSystemCommonMessageReserved2[] = {0xf5};
const uint8_t kSystemCommonMessageTuneRequest[] = {0xf6};
const uint8_t kChannelPressure[] = {0xd0, 0x01};
const uint8_t kChannelPressureWithRunningStatus[] = {0xd0, 0x01, 0x01, 0x01};
const uint8_t kTimingClock[] = {0xf8};
const uint8_t kBrokenData1[] = {0x90};
const uint8_t kBrokenData2[] = {0xf7};
const uint8_t kBrokenData3[] = {0xf2, 0x00};
const uint8_t kDataByte0[] = {0x00};
template <typename T, size_t N>
const std::vector<T> AsVector(const T (&data)[N]) {
std::vector<T> buffer;
buffer.insert(buffer.end(), data, data + N);
return buffer;
}
template <typename T, size_t N>
void PushToVector(const T (&data)[N], std::vector<T>* buffer) {
buffer->insert(buffer->end(), data, data + N);
}
TEST(MidiMessageUtilTest, GetMessageLength) {
// Check basic functionarity
EXPECT_EQ(arraysize(kNoteOn), GetMessageLength(kNoteOn[0]));
EXPECT_EQ(arraysize(kChannelPressure), GetMessageLength(kChannelPressure[0]));
EXPECT_EQ(arraysize(kTimingClock), GetMessageLength(kTimingClock[0]));
EXPECT_EQ(arraysize(kSystemCommonMessageTuneRequest),
GetMessageLength(kSystemCommonMessageTuneRequest[0]));
// SysEx message should be mapped to 0-length
EXPECT_EQ(0u, GetMessageLength(kGMOn[0]));
// Any reserved message should be mapped to 0-length
EXPECT_EQ(0u, GetMessageLength(kSystemCommonMessageReserved1[0]));
EXPECT_EQ(0u, GetMessageLength(kSystemCommonMessageReserved2[0]));
// Any data byte should be mapped to 0-length
EXPECT_EQ(0u, GetMessageLength(kGMOn[1]));
EXPECT_EQ(0u, GetMessageLength(kNoteOn[1]));
EXPECT_EQ(0u, GetMessageLength(kChannelPressure[1]));
}
TEST(MidiMessageUtilTest, IsValidWebMIDIData) {
// Test single event scenario
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kGMOn)));
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kGSOn)));
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kNoteOn)));
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kChannelPressure)));
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kTimingClock)));
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kBrokenData1)));
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kBrokenData2)));
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kBrokenData3)));
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kDataByte0)));
// MIDI running status should be disallowed
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kNoteOnWithRunningStatus)));
EXPECT_FALSE(IsValidWebMIDIData(AsVector(kChannelPressureWithRunningStatus)));
// Multiple messages are allowed as long as each of them is complete.
{
std::vector<uint8_t> buffer;
PushToVector(kGMOn, &buffer);
PushToVector(kNoteOn, &buffer);
PushToVector(kGSOn, &buffer);
PushToVector(kTimingClock, &buffer);
PushToVector(kNoteOn, &buffer);
EXPECT_TRUE(IsValidWebMIDIData(buffer));
PushToVector(kBrokenData1, &buffer);
EXPECT_FALSE(IsValidWebMIDIData(buffer));
}
// MIDI realtime message can be placed at any position.
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kNoteOnWithRealTimeClock)));
EXPECT_TRUE(IsValidWebMIDIData(AsVector(kGMOnWithRealTimeClock)));
}
} // namespace
} // namespace midi
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