1/*
2 *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 *
10 */
11
12#include "testing/gtest/include/gtest/gtest.h"
13
14#include "webrtc/base/arraysize.h"
15#include "webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_nalu.h"
16
17namespace webrtc {
18
19static const uint8_t NALU_TEST_DATA_0[] = {0xAA, 0xBB, 0xCC};
20static const uint8_t NALU_TEST_DATA_1[] = {0xDE, 0xAD, 0xBE, 0xEF};
21
22TEST(AnnexBBufferReaderTest, TestReadEmptyInput) {
23  const uint8_t annex_b_test_data[] = {0x00};
24  AnnexBBufferReader reader(annex_b_test_data, 0);
25  const uint8_t* nalu = nullptr;
26  size_t nalu_length = 0;
27  EXPECT_EQ(0u, reader.BytesRemaining());
28  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
29  EXPECT_EQ(nullptr, nalu);
30  EXPECT_EQ(0u, nalu_length);
31}
32
33TEST(AnnexBBufferReaderTest, TestReadSingleNalu) {
34  const uint8_t annex_b_test_data[] = {0x00, 0x00, 0x00, 0x01, 0xAA};
35  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
36  const uint8_t* nalu = nullptr;
37  size_t nalu_length = 0;
38  EXPECT_EQ(arraysize(annex_b_test_data), reader.BytesRemaining());
39  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
40  EXPECT_EQ(annex_b_test_data + 4, nalu);
41  EXPECT_EQ(1u, nalu_length);
42  EXPECT_EQ(0u, reader.BytesRemaining());
43  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
44  EXPECT_EQ(nullptr, nalu);
45  EXPECT_EQ(0u, nalu_length);
46}
47
48TEST(AnnexBBufferReaderTest, TestReadMissingNalu) {
49  // clang-format off
50  const uint8_t annex_b_test_data[] = {0x01,
51                                       0x00, 0x01,
52                                       0x00, 0x00, 0x01,
53                                       0x00, 0x00, 0x00, 0xFF};
54  // clang-format on
55  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
56  const uint8_t* nalu = nullptr;
57  size_t nalu_length = 0;
58  EXPECT_EQ(0u, reader.BytesRemaining());
59  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
60  EXPECT_EQ(nullptr, nalu);
61  EXPECT_EQ(0u, nalu_length);
62}
63
64TEST(AnnexBBufferReaderTest, TestReadMultipleNalus) {
65  // clang-format off
66  const uint8_t annex_b_test_data[] = {0x00, 0x00, 0x00, 0x01, 0xFF,
67                                       0x01,
68                                       0x00, 0x01,
69                                       0x00, 0x00, 0x01,
70                                       0x00, 0x00, 0x00, 0xFF,
71                                       0x00, 0x00, 0x00, 0x01, 0xAA, 0xBB};
72  // clang-format on
73  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
74  const uint8_t* nalu = nullptr;
75  size_t nalu_length = 0;
76  EXPECT_EQ(arraysize(annex_b_test_data), reader.BytesRemaining());
77  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
78  EXPECT_EQ(annex_b_test_data + 4, nalu);
79  EXPECT_EQ(11u, nalu_length);
80  EXPECT_EQ(6u, reader.BytesRemaining());
81  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
82  EXPECT_EQ(annex_b_test_data + 19, nalu);
83  EXPECT_EQ(2u, nalu_length);
84  EXPECT_EQ(0u, reader.BytesRemaining());
85  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
86  EXPECT_EQ(nullptr, nalu);
87  EXPECT_EQ(0u, nalu_length);
88}
89
90TEST(AvccBufferWriterTest, TestEmptyOutputBuffer) {
91  const uint8_t expected_buffer[] = {0x00};
92  const size_t buffer_size = 1;
93  rtc::scoped_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
94  memset(buffer.get(), 0, buffer_size);
95  AvccBufferWriter writer(buffer.get(), 0);
96  EXPECT_EQ(0u, writer.BytesRemaining());
97  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
98  EXPECT_EQ(0,
99            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
100}
101
102TEST(AvccBufferWriterTest, TestWriteSingleNalu) {
103  const uint8_t expected_buffer[] = {
104      0x00, 0x00, 0x00, 0x03, 0xAA, 0xBB, 0xCC,
105  };
106  const size_t buffer_size = arraysize(NALU_TEST_DATA_0) + 4;
107  rtc::scoped_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
108  AvccBufferWriter writer(buffer.get(), buffer_size);
109  EXPECT_EQ(buffer_size, writer.BytesRemaining());
110  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
111  EXPECT_EQ(0u, writer.BytesRemaining());
112  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_1, arraysize(NALU_TEST_DATA_1)));
113  EXPECT_EQ(0,
114            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
115}
116
117TEST(AvccBufferWriterTest, TestWriteMultipleNalus) {
118  // clang-format off
119  const uint8_t expected_buffer[] = {
120      0x00, 0x00, 0x00, 0x03, 0xAA, 0xBB, 0xCC,
121      0x00, 0x00, 0x00, 0x04, 0xDE, 0xAD, 0xBE, 0xEF
122  };
123  // clang-format on
124  const size_t buffer_size =
125      arraysize(NALU_TEST_DATA_0) + arraysize(NALU_TEST_DATA_1) + 8;
126  rtc::scoped_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
127  AvccBufferWriter writer(buffer.get(), buffer_size);
128  EXPECT_EQ(buffer_size, writer.BytesRemaining());
129  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
130  EXPECT_EQ(buffer_size - (arraysize(NALU_TEST_DATA_0) + 4),
131            writer.BytesRemaining());
132  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_1, arraysize(NALU_TEST_DATA_1)));
133  EXPECT_EQ(0u, writer.BytesRemaining());
134  EXPECT_EQ(0,
135            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
136}
137
138TEST(AvccBufferWriterTest, TestOverflow) {
139  const uint8_t expected_buffer[] = {0x00, 0x00, 0x00};
140  const size_t buffer_size = arraysize(NALU_TEST_DATA_0);
141  rtc::scoped_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
142  memset(buffer.get(), 0, buffer_size);
143  AvccBufferWriter writer(buffer.get(), buffer_size);
144  EXPECT_EQ(buffer_size, writer.BytesRemaining());
145  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
146  EXPECT_EQ(buffer_size, writer.BytesRemaining());
147  EXPECT_EQ(0,
148            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
149}
150
151}  // namespace webrtc
152