1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// Copyright 2014 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 <stddef.h>
#include <stdint.h>
#include "base/macros.h"
#include "media/ffmpeg/ffmpeg_common.h"
#include "media/filters/ffmpeg_aac_bitstream_converter.h"
#include "media/filters/ffmpeg_demuxer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace {
const int kAacMainProfile = 0;
const int kAacLowComplexityProfile = 1;
} // namespace
// Class for testing the FFmpegAACBitstreamConverter.
class FFmpegAACBitstreamConverterTest : public testing::Test {
protected:
FFmpegAACBitstreamConverterTest() {
// Minimal extra data header
memset(context_header_, 0, sizeof(context_header_));
// Set up reasonable aac context
memset(&test_context_, 0, sizeof(AVCodecContext));
test_context_.codec_id = AV_CODEC_ID_AAC;
test_context_.profile = FF_PROFILE_AAC_MAIN;
test_context_.channels = 2;
test_context_.extradata = context_header_;
test_context_.extradata_size = sizeof(context_header_);
}
void CreatePacket(AVPacket* packet, const uint8_t* data, uint32_t data_size) {
// Create new packet sized of |data_size| from |data|.
EXPECT_EQ(av_new_packet(packet, data_size), 0);
memcpy(packet->data, data, data_size);
}
// Variable to hold valid dummy context for testing.
AVCodecContext test_context_;
private:
uint8_t context_header_[2];
DISALLOW_COPY_AND_ASSIGN(FFmpegAACBitstreamConverterTest);
};
TEST_F(FFmpegAACBitstreamConverterTest, Conversion_Success) {
FFmpegAACBitstreamConverter converter(&test_context_);
uint8_t dummy_packet[1000];
// Fill dummy packet with junk data. aac converter doesn't look into packet
// data, just header, so can fill with whatever we want for test.
for(size_t i = 0; i < sizeof(dummy_packet); i++) {
dummy_packet[i] = i & 0xFF; // Repeated sequences of 0-255
}
ScopedAVPacket test_packet(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet,
sizeof(dummy_packet));
// Try out the actual conversion (should be successful and allocate new
// packet and destroy the old one).
EXPECT_TRUE(converter.ConvertPacket(test_packet.get()));
// Check that a header was added and that packet data was preserved
EXPECT_EQ(static_cast<long>(test_packet->size),
static_cast<long>(sizeof(dummy_packet) +
FFmpegAACBitstreamConverter::kAdtsHeaderSize));
EXPECT_EQ(memcmp(
reinterpret_cast<void*>(test_packet->data +
FFmpegAACBitstreamConverter::kAdtsHeaderSize),
reinterpret_cast<void*>(dummy_packet),
sizeof(dummy_packet)), 0);
}
TEST_F(FFmpegAACBitstreamConverterTest, Conversion_FailureNullParams) {
// Set up AVCConfigurationRecord to represent NULL data.
AVCodecContext dummy_context;
dummy_context.extradata = NULL;
dummy_context.extradata_size = 0;
FFmpegAACBitstreamConverter converter(&dummy_context);
uint8_t dummy_packet[1000] = {0};
// Try out the actual conversion with NULL parameter.
EXPECT_FALSE(converter.ConvertPacket(NULL));
// Create new packet to test actual conversion.
ScopedAVPacket test_packet(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet, sizeof(dummy_packet));
// Try out the actual conversion. This should fail due to missing extradata.
EXPECT_FALSE(converter.ConvertPacket(test_packet.get()));
}
TEST_F(FFmpegAACBitstreamConverterTest, Conversion_AudioProfileType) {
FFmpegAACBitstreamConverter converter(&test_context_);
uint8_t dummy_packet[1000] = {0};
ScopedAVPacket test_packet(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet,
sizeof(dummy_packet));
EXPECT_TRUE(converter.ConvertPacket(test_packet.get()));
// Check that the ADTS header profile matches the context
int profile = ((test_packet->data[2] & 0xC0) >> 6);
EXPECT_EQ(profile, kAacMainProfile);
test_context_.profile = FF_PROFILE_AAC_HE;
FFmpegAACBitstreamConverter converter_he(&test_context_);
test_packet.reset(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet,
sizeof(dummy_packet));
EXPECT_TRUE(converter_he.ConvertPacket(test_packet.get()));
profile = ((test_packet->data[2] & 0xC0) >> 6);
EXPECT_EQ(profile, kAacLowComplexityProfile);
test_context_.profile = FF_PROFILE_AAC_ELD;
FFmpegAACBitstreamConverter converter_eld(&test_context_);
test_packet.reset(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet,
sizeof(dummy_packet));
EXPECT_FALSE(converter_eld.ConvertPacket(test_packet.get()));
}
TEST_F(FFmpegAACBitstreamConverterTest, Conversion_MultipleLength) {
FFmpegAACBitstreamConverter converter(&test_context_);
uint8_t dummy_packet[1000];
ScopedAVPacket test_packet(new AVPacket());
CreatePacket(test_packet.get(), dummy_packet,
sizeof(dummy_packet));
// Try out the actual conversion (should be successful and allocate new
// packet and destroy the old one).
EXPECT_TRUE(converter.ConvertPacket(test_packet.get()));
// Check that the ADTS header frame length matches the packet size
int frame_length = ((test_packet->data[3] & 0x03) << 11) |
((test_packet->data[4] & 0xFF) << 3) |
((test_packet->data[5] & 0xE0) >> 5);
EXPECT_EQ(frame_length, test_packet->size);
// Create a second packet that is 1 byte smaller than the first one
ScopedAVPacket second_test_packet(new AVPacket());
CreatePacket(second_test_packet.get(), dummy_packet,
sizeof(dummy_packet) - 1);
// Try out the actual conversion (should be successful and allocate new
// packet and destroy the old one).
EXPECT_TRUE(converter.ConvertPacket(second_test_packet.get()));
// Check that the ADTS header frame length matches the packet size
frame_length = ((second_test_packet->data[3] & 0x03) << 11) |
((second_test_packet->data[4] & 0xFF) << 3) |
((second_test_packet->data[5] & 0xE0) >> 5);
EXPECT_EQ(frame_length, second_test_packet->size);
}
} // namespace media
|
