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
|
/*
* Copyright (c) 2019, 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 "aom_dsp/vmaf.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#include <process.h>
#else
#include <unistd.h>
#endif
#include "aom_dsp/blend.h"
static void vmaf_fatal_error(const char *message) {
fprintf(stderr, "Fatal error: %s\n", message);
exit(EXIT_FAILURE);
}
void aom_init_vmaf_model(VmafModel **vmaf_model, const char *model_path) {
if (*vmaf_model != NULL) return;
VmafModelConfig model_cfg;
model_cfg.flags = VMAF_MODEL_FLAG_DISABLE_CLIP;
model_cfg.name = "vmaf";
if (vmaf_model_load_from_path(vmaf_model, &model_cfg, model_path)) {
vmaf_fatal_error("Failed to load VMAF model.");
}
}
void aom_close_vmaf_model(VmafModel *vmaf_model) {
vmaf_model_destroy(vmaf_model);
}
static void copy_picture(const int bit_depth, const YV12_BUFFER_CONFIG *src,
VmafPicture *dst) {
const int width = src->y_width;
const int height = src->y_height;
if (bit_depth > 8) {
uint16_t *src_ptr = CONVERT_TO_SHORTPTR(src->y_buffer);
uint16_t *dst_ptr = dst->data[0];
for (int row = 0; row < height; ++row) {
memcpy(dst_ptr, src_ptr, width * sizeof(dst_ptr[0]));
src_ptr += src->y_stride;
dst_ptr += dst->stride[0] / 2;
}
} else {
uint8_t *src_ptr = src->y_buffer;
uint8_t *dst_ptr = (uint8_t *)dst->data[0];
for (int row = 0; row < height; ++row) {
memcpy(dst_ptr, src_ptr, width * sizeof(dst_ptr[0]));
src_ptr += src->y_stride;
dst_ptr += dst->stride[0];
}
}
}
void aom_init_vmaf_context(VmafContext **vmaf_context, VmafModel *vmaf_model,
bool cal_vmaf_neg) {
// TODO(sdeng): make them CLI arguments.
VmafConfiguration cfg;
cfg.log_level = VMAF_LOG_LEVEL_NONE;
cfg.n_threads = 0;
cfg.n_subsample = 0;
cfg.cpumask = 0;
if (vmaf_init(vmaf_context, cfg)) {
vmaf_fatal_error("Failed to init VMAF context.");
}
if (cal_vmaf_neg) {
VmafFeatureDictionary *vif_feature = NULL;
if (vmaf_feature_dictionary_set(&vif_feature, "vif_enhn_gain_limit",
"1.0")) {
vmaf_fatal_error("Failed to set vif_enhn_gain_limit.");
}
if (vmaf_model_feature_overload(vmaf_model, "float_vif", vif_feature)) {
vmaf_fatal_error("Failed to use feature float_vif.");
}
VmafFeatureDictionary *adm_feature = NULL;
if (vmaf_feature_dictionary_set(&adm_feature, "adm_enhn_gain_limit",
"1.0")) {
vmaf_fatal_error("Failed to set adm_enhn_gain_limit.");
}
if (vmaf_model_feature_overload(vmaf_model, "adm", adm_feature)) {
vmaf_fatal_error("Failed to use feature float_adm.");
}
}
VmafFeatureDictionary *motion_force_zero = NULL;
if (vmaf_feature_dictionary_set(&motion_force_zero, "motion_force_zero",
"1")) {
vmaf_fatal_error("Failed to set motion_force_zero.");
}
if (vmaf_model_feature_overload(vmaf_model, "float_motion",
motion_force_zero)) {
vmaf_fatal_error("Failed to use feature float_motion.");
}
if (vmaf_use_features_from_model(*vmaf_context, vmaf_model)) {
vmaf_fatal_error("Failed to load feature extractors from VMAF model.");
}
}
void aom_close_vmaf_context(VmafContext *vmaf_context) {
if (vmaf_close(vmaf_context)) {
vmaf_fatal_error("Failed to close VMAF context.");
}
}
void aom_calc_vmaf(VmafModel *vmaf_model, const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *distorted, int bit_depth,
bool cal_vmaf_neg, double *vmaf) {
VmafContext *vmaf_context;
aom_init_vmaf_context(&vmaf_context, vmaf_model, cal_vmaf_neg);
const int frame_index = 0;
VmafPicture ref, dist;
if (vmaf_picture_alloc(&ref, VMAF_PIX_FMT_YUV420P, bit_depth, source->y_width,
source->y_height) ||
vmaf_picture_alloc(&dist, VMAF_PIX_FMT_YUV420P, bit_depth,
source->y_width, source->y_height)) {
vmaf_fatal_error("Failed to alloc VMAF pictures.");
}
copy_picture(bit_depth, source, &ref);
copy_picture(bit_depth, distorted, &dist);
if (vmaf_read_pictures(vmaf_context, &ref, &dist,
/*picture index=*/frame_index)) {
vmaf_fatal_error("Failed to read VMAF pictures.");
}
if (vmaf_read_pictures(vmaf_context, NULL, NULL, 0)) {
vmaf_fatal_error("Failed to flush context.");
}
vmaf_picture_unref(&ref);
vmaf_picture_unref(&dist);
vmaf_score_at_index(vmaf_context, vmaf_model, vmaf, frame_index);
aom_close_vmaf_context(vmaf_context);
}
void aom_read_vmaf_image(VmafContext *vmaf_context,
const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *distorted, int bit_depth,
int frame_index) {
VmafPicture ref, dist;
if (vmaf_picture_alloc(&ref, VMAF_PIX_FMT_YUV420P, bit_depth, source->y_width,
source->y_height) ||
vmaf_picture_alloc(&dist, VMAF_PIX_FMT_YUV420P, bit_depth,
source->y_width, source->y_height)) {
vmaf_fatal_error("Failed to alloc VMAF pictures.");
}
copy_picture(bit_depth, source, &ref);
copy_picture(bit_depth, distorted, &dist);
if (vmaf_read_pictures(vmaf_context, &ref, &dist,
/*picture index=*/frame_index)) {
vmaf_fatal_error("Failed to read VMAF pictures.");
}
vmaf_picture_unref(&ref);
vmaf_picture_unref(&dist);
}
double aom_calc_vmaf_at_index(VmafContext *vmaf_context, VmafModel *vmaf_model,
int frame_index) {
double vmaf;
if (vmaf_score_at_index(vmaf_context, vmaf_model, &vmaf, frame_index)) {
vmaf_fatal_error("Failed to calc VMAF scores.");
}
return vmaf;
}
void aom_flush_vmaf_context(VmafContext *vmaf_context) {
if (vmaf_read_pictures(vmaf_context, NULL, NULL, 0)) {
vmaf_fatal_error("Failed to flush context.");
}
}
|
