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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 "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(std::size(kNoteOn), GetMessageLength(kNoteOn[0]));
- EXPECT_EQ(std::size(kChannelPressure), GetMessageLength(kChannelPressure[0]));
- EXPECT_EQ(std::size(kTimingClock), GetMessageLength(kTimingClock[0]));
- EXPECT_EQ(std::size(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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