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
|
#include <js_native_api.h>
#include <string.h>
#include "../common.h"
static napi_value Multiply(napi_env env, napi_callback_info info) {
size_t argc = 2;
napi_value args[2];
NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NAPI_ASSERT(env, argc == 2, "Wrong number of arguments");
napi_valuetype valuetype0;
NAPI_CALL(env, napi_typeof(env, args[0], &valuetype0));
NAPI_ASSERT(env, valuetype0 == napi_object,
"Wrong type of arguments. Expects a typed array as first argument.");
napi_value input_array = args[0];
bool is_typedarray;
NAPI_CALL(env, napi_is_typedarray(env, input_array, &is_typedarray));
NAPI_ASSERT(env, is_typedarray,
"Wrong type of arguments. Expects a typed array as first argument.");
napi_valuetype valuetype1;
NAPI_CALL(env, napi_typeof(env, args[1], &valuetype1));
NAPI_ASSERT(env, valuetype1 == napi_number,
"Wrong type of arguments. Expects a number as second argument.");
double multiplier;
NAPI_CALL(env, napi_get_value_double(env, args[1], &multiplier));
napi_typedarray_type type;
napi_value input_buffer;
size_t byte_offset;
size_t i, length;
NAPI_CALL(env, napi_get_typedarray_info(
env, input_array, &type, &length, NULL, &input_buffer, &byte_offset));
void* data;
size_t byte_length;
NAPI_CALL(env, napi_get_arraybuffer_info(
env, input_buffer, &data, &byte_length));
napi_value output_buffer;
void* output_ptr = NULL;
NAPI_CALL(env, napi_create_arraybuffer(
env, byte_length, &output_ptr, &output_buffer));
napi_value output_array;
NAPI_CALL(env, napi_create_typedarray(
env, type, length, output_buffer, byte_offset, &output_array));
if (type == napi_uint8_array) {
uint8_t* input_bytes = (uint8_t*)(data) + byte_offset;
uint8_t* output_bytes = (uint8_t*)(output_ptr);
for (i = 0; i < length; i++) {
output_bytes[i] = (uint8_t)(input_bytes[i] * multiplier);
}
} else if (type == napi_float64_array) {
double* input_doubles = (double*)((uint8_t*)(data) + byte_offset);
double* output_doubles = (double*)(output_ptr);
for (i = 0; i < length; i++) {
output_doubles[i] = input_doubles[i] * multiplier;
}
} else {
napi_throw_error(env, NULL,
"Typed array was of a type not expected by test.");
return NULL;
}
return output_array;
}
static napi_value External(napi_env env, napi_callback_info info) {
static int8_t externalData[] = {0, 1, 2};
napi_value output_buffer;
NAPI_CALL(env, napi_create_external_arraybuffer(
env,
externalData,
sizeof(externalData),
NULL, // finalize_callback
NULL, // finalize_hint
&output_buffer));
napi_value output_array;
NAPI_CALL(env, napi_create_typedarray(env,
napi_int8_array,
sizeof(externalData) / sizeof(int8_t),
output_buffer,
0,
&output_array));
return output_array;
}
static napi_value CreateTypedArray(napi_env env, napi_callback_info info) {
size_t argc = 4;
napi_value args[4];
NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NAPI_ASSERT(env, argc == 2 || argc == 4, "Wrong number of arguments");
napi_value input_array = args[0];
napi_valuetype valuetype0;
NAPI_CALL(env, napi_typeof(env, input_array, &valuetype0));
NAPI_ASSERT(env, valuetype0 == napi_object,
"Wrong type of arguments. Expects a typed array as first argument.");
bool is_typedarray;
NAPI_CALL(env, napi_is_typedarray(env, input_array, &is_typedarray));
NAPI_ASSERT(env, is_typedarray,
"Wrong type of arguments. Expects a typed array as first argument.");
napi_valuetype valuetype1;
napi_value input_buffer = args[1];
NAPI_CALL(env, napi_typeof(env, input_buffer, &valuetype1));
NAPI_ASSERT(env, valuetype1 == napi_object,
"Wrong type of arguments. Expects an array buffer as second argument.");
bool is_arraybuffer;
NAPI_CALL(env, napi_is_arraybuffer(env, input_buffer, &is_arraybuffer));
NAPI_ASSERT(env, is_arraybuffer,
"Wrong type of arguments. Expects an array buffer as second argument.");
napi_typedarray_type type;
napi_value in_array_buffer;
size_t byte_offset;
size_t length;
NAPI_CALL(env, napi_get_typedarray_info(
env, input_array, &type, &length, NULL, &in_array_buffer, &byte_offset));
if (argc == 4) {
napi_valuetype valuetype2;
NAPI_CALL(env, napi_typeof(env, args[2], &valuetype2));
NAPI_ASSERT(env, valuetype2 == napi_number,
"Wrong type of arguments. Expects a number as third argument.");
uint32_t uint32_length;
NAPI_CALL(env, napi_get_value_uint32(env, args[2], &uint32_length));
length = uint32_length;
napi_valuetype valuetype3;
NAPI_CALL(env, napi_typeof(env, args[3], &valuetype3));
NAPI_ASSERT(env, valuetype3 == napi_number,
"Wrong type of arguments. Expects a number as third argument.");
uint32_t uint32_byte_offset;
NAPI_CALL(env, napi_get_value_uint32(env, args[3], &uint32_byte_offset));
byte_offset = uint32_byte_offset;
}
napi_value output_array;
NAPI_CALL(env, napi_create_typedarray(
env, type, length, input_buffer, byte_offset, &output_array));
return output_array;
}
EXTERN_C_START
napi_value Init(napi_env env, napi_value exports) {
napi_property_descriptor descriptors[] = {
DECLARE_NAPI_PROPERTY("Multiply", Multiply),
DECLARE_NAPI_PROPERTY("External", External),
DECLARE_NAPI_PROPERTY("CreateTypedArray", CreateTypedArray),
};
NAPI_CALL(env, napi_define_properties(
env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
return exports;
}
EXTERN_C_END
|
