1 // Copyright 2014 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 "media/midi/usb_midi_descriptor_parser.h"
6
7 #include "testing/gtest/include/gtest/gtest.h"
8
9 namespace media {
10
11 namespace {
12
TEST(UsbMidiDescriptorParserTest,ParseEmpty)13 TEST(UsbMidiDescriptorParserTest, ParseEmpty) {
14 UsbMidiDescriptorParser parser;
15 std::vector<UsbMidiJack> jacks;
16 EXPECT_TRUE(parser.Parse(NULL, NULL, 0, &jacks));
17 EXPECT_TRUE(jacks.empty());
18 }
19
TEST(UsbMidiDescriptorParserTest,InvalidSize)20 TEST(UsbMidiDescriptorParserTest, InvalidSize) {
21 UsbMidiDescriptorParser parser;
22 std::vector<UsbMidiJack> jacks;
23 uint8 data[] = {0x04};
24 EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
25 EXPECT_TRUE(jacks.empty());
26 }
27
TEST(UsbMidiDescriptorParserTest,NonExistingJackIsAssociated)28 TEST(UsbMidiDescriptorParserTest, NonExistingJackIsAssociated) {
29 UsbMidiDescriptorParser parser;
30 std::vector<UsbMidiJack> jacks;
31 // Jack id=1 is found in a CS_ENDPOINT descriptor, but there is no definition
32 // for the jack.
33 uint8 data[] = {
34 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, 0x07,
35 0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
36 0x01,
37 };
38 EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
39 EXPECT_TRUE(jacks.empty());
40 }
41
TEST(UsbMidiDescriptorParserTest,JacksShouldBeIgnoredWhenParserIsNotParsingMidiInterface)42 TEST(UsbMidiDescriptorParserTest,
43 JacksShouldBeIgnoredWhenParserIsNotParsingMidiInterface) {
44 UsbMidiDescriptorParser parser;
45 std::vector<UsbMidiJack> jacks;
46 // a NON-MIDI INTERFACE descriptor followed by ENDPOINT and CS_ENDPOINT
47 // descriptors (Compare with the previous test case).
48 uint8 data[] = {
49 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x02, 0x00, 0x00, 0x07,
50 0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
51 0x01,
52 };
53 EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
54 EXPECT_TRUE(jacks.empty());
55 }
56
TEST(UsbMidiDescriptorParserTest,Parse)57 TEST(UsbMidiDescriptorParserTest, Parse) {
58 UsbMidiDescriptorParser parser;
59 std::vector<UsbMidiJack> jacks;
60 // A complete device descriptor.
61 uint8 data[] = {
62 0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
63 0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
64 0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
65 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
66 0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
67 0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
68 0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
69 0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
70 0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
71 0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
72 0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
73 0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
74 0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
75 0x05, 0x25, 0x01, 0x01, 0x07,
76 };
77 EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
78 ASSERT_EQ(3u, jacks.size());
79
80 EXPECT_EQ(2u, jacks[0].jack_id);
81 EXPECT_EQ(0u, jacks[0].cable_number);
82 EXPECT_EQ(2u, jacks[0].endpoint_number());
83 EXPECT_EQ(UsbMidiJack::DIRECTION_OUT, jacks[0].direction());
84 EXPECT_EQ(NULL, jacks[0].device);
85
86 EXPECT_EQ(3u, jacks[1].jack_id);
87 EXPECT_EQ(1u, jacks[1].cable_number);
88 EXPECT_EQ(2u, jacks[1].endpoint_number());
89 EXPECT_EQ(UsbMidiJack::DIRECTION_OUT, jacks[1].direction());
90 EXPECT_EQ(NULL, jacks[1].device);
91
92 EXPECT_EQ(7u, jacks[2].jack_id);
93 EXPECT_EQ(0u, jacks[2].cable_number);
94 EXPECT_EQ(2u, jacks[2].endpoint_number());
95 EXPECT_EQ(UsbMidiJack::DIRECTION_IN, jacks[2].direction());
96 EXPECT_EQ(NULL, jacks[2].device);
97 }
98
99 } // namespace
100
101 } // namespace media
102