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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <vector>
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "config/aom_config.h"
#include "aom/aomcx.h"
#include "aom/aomdx.h"
#include "aom/aom_encoder.h"
#include "aom/aom_decoder.h"
#define NELEMENTS(x) static_cast<int>(sizeof(x) / sizeof(x[0]))
using libaom_test::ACMRandom;
namespace {
class CompressedSource {
public:
explicit CompressedSource(int seed) : rnd_(seed), frame_count_(0) {
aom_codec_iface_t *algo = aom_codec_av1_cx();
aom_codec_enc_cfg_t cfg;
#if CONFIG_REALTIME_ONLY
aom_codec_enc_config_default(algo, &cfg, 1);
#else
aom_codec_enc_config_default(algo, &cfg, 0);
#endif
// force the quantizer, to reduce the sensitivity on encoding choices.
// e.g, we don't want this test to break when the rate control is modified.
{
const int max_q = cfg.rc_max_quantizer;
const int min_q = cfg.rc_min_quantizer;
const int q = rnd_.PseudoUniform(max_q - min_q + 1) + min_q;
cfg.rc_end_usage = AOM_Q;
cfg.rc_max_quantizer = q;
cfg.rc_min_quantizer = q;
}
// choose the picture size
{
width_ = rnd_.PseudoUniform(kWidth - 8) + 8;
height_ = rnd_.PseudoUniform(kHeight - 8) + 8;
}
// choose the chroma subsampling
{
const aom_img_fmt_t fmts[] = {
AOM_IMG_FMT_I420,
AOM_IMG_FMT_I422,
AOM_IMG_FMT_I444,
};
format_ = fmts[rnd_.PseudoUniform(NELEMENTS(fmts))];
}
cfg.g_w = width_;
cfg.g_h = height_;
cfg.g_lag_in_frames = 0;
if (format_ == AOM_IMG_FMT_I420)
cfg.g_profile = 0;
else if (format_ == AOM_IMG_FMT_I444)
cfg.g_profile = 1;
else if (format_ == AOM_IMG_FMT_I422)
cfg.g_profile = 2;
aom_codec_enc_init(&enc_, algo, &cfg, 0);
}
~CompressedSource() { aom_codec_destroy(&enc_); }
const aom_codec_cx_pkt_t *ReadFrame() {
uint8_t buf[kWidth * kHeight * 3] = { 0 };
// render regular pattern
const int period = rnd_.Rand8() % 32 + 1;
const int phase = rnd_.Rand8() % period;
const int val_a = rnd_.Rand8();
const int val_b = rnd_.Rand8();
for (int i = 0; i < (int)sizeof buf; ++i)
buf[i] = (i + phase) % period < period / 2 ? val_a : val_b;
aom_image_t img;
aom_img_wrap(&img, format_, width_, height_, 0, buf);
aom_codec_encode(&enc_, &img, frame_count_++, 1, 0);
aom_codec_iter_t iter = nullptr;
const aom_codec_cx_pkt_t *pkt = nullptr;
do {
pkt = aom_codec_get_cx_data(&enc_, &iter);
} while (pkt && pkt->kind != AOM_CODEC_CX_FRAME_PKT);
return pkt;
}
private:
static const int kWidth = 128;
static const int kHeight = 128;
ACMRandom rnd_;
aom_img_fmt_t format_;
aom_codec_ctx_t enc_;
int frame_count_;
int width_, height_;
};
// lowers an aom_image_t to an easily comparable/printable form
std::vector<uint16_t> Serialize(const aom_image_t *img) {
std::vector<uint16_t> bytes;
bytes.reserve(img->d_w * img->d_h * 3);
for (int plane = 0; plane < 3; ++plane) {
const int w = aom_img_plane_width(img, plane);
const int h = aom_img_plane_height(img, plane);
for (int r = 0; r < h; ++r) {
for (int c = 0; c < w; ++c) {
const unsigned char *row = img->planes[plane] + r * img->stride[plane];
if (img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) {
const uint16_t *row16 = reinterpret_cast<const uint16_t *>(row);
bytes.push_back(row16[c]);
} else {
bytes.push_back(row[c]);
}
}
}
}
return bytes;
}
class Decoder {
public:
explicit Decoder(int allowLowbitdepth) {
aom_codec_iface_t *algo = aom_codec_av1_dx();
aom_codec_dec_cfg_t cfg = aom_codec_dec_cfg_t();
cfg.allow_lowbitdepth = allowLowbitdepth;
aom_codec_dec_init(&dec_, algo, &cfg, 0);
}
~Decoder() { aom_codec_destroy(&dec_); }
std::vector<uint16_t> decode(const aom_codec_cx_pkt_t *pkt) {
aom_codec_decode(&dec_, static_cast<uint8_t *>(pkt->data.frame.buf),
pkt->data.frame.sz, nullptr);
aom_codec_iter_t iter = nullptr;
return Serialize(aom_codec_get_frame(&dec_, &iter));
}
private:
aom_codec_ctx_t dec_;
};
// Try to reveal a mismatch between LBD and HBD coding paths.
TEST(CodingPathSync, SearchForHbdLbdMismatch) {
const int count_tests = 10;
for (int i = 0; i < count_tests; ++i) {
Decoder dec_hbd(0);
Decoder dec_lbd(1);
CompressedSource enc(i);
for (int k = 0; k < 3; ++k) {
const aom_codec_cx_pkt_t *frame = enc.ReadFrame();
std::vector<uint16_t> lbd_yuv = dec_lbd.decode(frame);
std::vector<uint16_t> hbd_yuv = dec_hbd.decode(frame);
ASSERT_EQ(lbd_yuv, hbd_yuv);
}
}
}
TEST(CodingPathSyncLarge, SearchForHbdLbdMismatchLarge) {
const int count_tests = 100;
const int seed = 1234;
for (int i = 0; i < count_tests; ++i) {
Decoder dec_hbd(0);
Decoder dec_lbd(1);
CompressedSource enc(seed + i);
for (int k = 0; k < 5; ++k) {
const aom_codec_cx_pkt_t *frame = enc.ReadFrame();
std::vector<uint16_t> lbd_yuv = dec_lbd.decode(frame);
std::vector<uint16_t> hbd_yuv = dec_hbd.decode(frame);
ASSERT_EQ(lbd_yuv, hbd_yuv);
}
}
}
} // namespace
|
