1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/browser/media/midi_host.h"
6
7#include "testing/gtest/include/gtest/gtest.h"
8
9namespace content {
10namespace {
11
12const uint8 kGMOn[] = { 0xf0, 0x7e, 0x7f, 0x09, 0x01, 0xf7 };
13const uint8 kGSOn[] = {
14  0xf0, 0x41, 0x10, 0x42, 0x12, 0x40, 0x00, 0x7f, 0x00, 0x41, 0xf7,
15};
16const uint8 kNoteOn[] = { 0x90, 0x3c, 0x7f };
17const uint8 kNoteOnWithRunningStatus[] = {
18  0x90, 0x3c, 0x7f, 0x3c, 0x7f, 0x3c, 0x7f,
19};
20const uint8 kChannelPressure[] = { 0xd0, 0x01 };
21const uint8 kChannelPressureWithRunningStatus[] = {
22  0xd0, 0x01, 0x01, 0x01,
23};
24const uint8 kTimingClock[] = { 0xf8 };
25const uint8 kBrokenData1[] = { 0x90 };
26const uint8 kBrokenData2[] = { 0xf7 };
27const uint8 kBrokenData3[] = { 0xf2, 0x00 };
28const uint8 kDataByte0[] = { 0x00 };
29
30template <typename T, size_t N>
31const std::vector<T> AsVector(const T(&data)[N]) {
32  std::vector<T> buffer;
33  buffer.insert(buffer.end(), data, data + N);
34  return buffer;
35}
36
37template <typename T, size_t N>
38void PushToVector(const T(&data)[N], std::vector<T>* buffer) {
39  buffer->insert(buffer->end(), data, data + N);
40}
41
42}  // namespace
43
44TEST(MidiHostTest, IsValidWebMIDIData) {
45  // Test single event scenario
46  EXPECT_TRUE(MidiHost::IsValidWebMIDIData(AsVector(kGMOn)));
47  EXPECT_TRUE(MidiHost::IsValidWebMIDIData(AsVector(kGSOn)));
48  EXPECT_TRUE(MidiHost::IsValidWebMIDIData(AsVector(kNoteOn)));
49  EXPECT_TRUE(MidiHost::IsValidWebMIDIData(AsVector(kChannelPressure)));
50  EXPECT_TRUE(MidiHost::IsValidWebMIDIData(AsVector(kTimingClock)));
51  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(AsVector(kBrokenData1)));
52  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(AsVector(kBrokenData2)));
53  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(AsVector(kBrokenData3)));
54  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(AsVector(kDataByte0)));
55
56  // MIDI running status should be disallowed
57  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(
58      AsVector(kNoteOnWithRunningStatus)));
59  EXPECT_FALSE(MidiHost::IsValidWebMIDIData(
60      AsVector(kChannelPressureWithRunningStatus)));
61
62  // Multiple messages are allowed as long as each of them is complete.
63  {
64    std::vector<uint8> buffer;
65    PushToVector(kGMOn, &buffer);
66    PushToVector(kNoteOn, &buffer);
67    PushToVector(kGSOn, &buffer);
68    PushToVector(kTimingClock, &buffer);
69    PushToVector(kNoteOn, &buffer);
70    EXPECT_TRUE(MidiHost::IsValidWebMIDIData(buffer));
71    PushToVector(kBrokenData1, &buffer);
72    EXPECT_FALSE(MidiHost::IsValidWebMIDIData(buffer));
73  }
74
75  // MIDI realtime message can be placed at any position.
76  {
77    const uint8 kNoteOnWithRealTimeClock[] = {
78      0x90, 0xf8, 0x3c, 0x7f, 0x90, 0xf8, 0x3c, 0xf8, 0x7f, 0xf8,
79    };
80    EXPECT_TRUE(MidiHost::IsValidWebMIDIData(
81        AsVector(kNoteOnWithRealTimeClock)));
82
83    const uint8 kGMOnWithRealTimeClock[] = {
84      0xf0, 0xf8, 0x7e, 0x7f, 0x09, 0x01, 0xf8, 0xf7,
85    };
86    EXPECT_TRUE(MidiHost::IsValidWebMIDIData(
87        AsVector(kGMOnWithRealTimeClock)));
88  }
89}
90
91}  // namespace conent
92