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
|
//
// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include <armnn_delegate.hpp>
#include <DelegateOptions.hpp>
#if defined(ARMCOMPUTECL_ENABLED)
#include <arm_compute/core/CL/OpenCL.h>
#endif
#include <jni.h>
#include <string>
extern "C" {
/// Creates an Arm NN Delegate object.
/// Options are passed in form of String arrays. For details about what options_keys and option_values
/// are supported please see:
// armnnDelegate::DelegateOptions::DelegateOptions(char const* const*, char const* const*,size_t,void (*)(const char*))
JNIEXPORT jlong
JNICALL Java_com_arm_armnn_delegate_ArmnnDelegate_createDelegate(JNIEnv* env,
jclass clazz,
jobjectArray optionKeys,
jobjectArray optionValues)
{
int numOptions = env->GetArrayLength(optionKeys);
const char* nativeOptionKeys[numOptions];
const char* nativeOptionValues[numOptions];
jstring jKeyStrings[numOptions];
jstring jValueStrings[numOptions];
// Convert java array of string into char so we can make use of it in cpp code
for (int i = 0; i < numOptions; i++)
{
jKeyStrings[i] = static_cast<jstring>(env->GetObjectArrayElement(optionKeys, i));
jValueStrings[i] = static_cast<jstring>(env->GetObjectArrayElement(optionValues, i));
nativeOptionKeys[i] = env->GetStringUTFChars(jKeyStrings[i], 0);
nativeOptionValues[i] = env->GetStringUTFChars(jValueStrings[i], 0);
}
armnnDelegate::DelegateOptions delegateOptions(nativeOptionKeys,
nativeOptionValues,
numOptions,
nullptr);
// Release jni memory. After the delegate options are created there is no need to hold on to it anymore.
for (int i = 0; i < numOptions; i++)
{
env->ReleaseStringUTFChars(jKeyStrings[i], nativeOptionKeys[i]);
env->ReleaseStringUTFChars(jValueStrings[i], nativeOptionValues[i]);
}
return reinterpret_cast<jlong>(armnnDelegate::TfLiteArmnnDelegateCreate(delegateOptions));
}
/// Destroys a given Arm NN Delegate object
JNIEXPORT void
JNICALL Java_com_arm_armnn_delegate_ArmnnDelegate_deleteDelegate(JNIEnv* env, jclass clazz, jlong delegate)
{
armnnDelegate::TfLiteArmnnDelegateDelete(reinterpret_cast<TfLiteDelegate*>(delegate));
}
/// Returns true if a Arm Mali GPU is detected.
/// Can be used to ensure that GpuAcc is supported on a device.
JNIEXPORT jboolean
JNICALL Java_com_arm_armnn_delegate_ArmnnUtils_IsGpuAccSupported(JNIEnv* env, jclass clazz)
{
#if defined(ARMCOMPUTECL_ENABLED)
cl::Device device = cl::Device::getDefault();
char device_name[32];
cl_int err = clGetDeviceInfo(device.get(), CL_DEVICE_NAME, sizeof(device_name), &device_name, NULL);
if (err != CL_SUCCESS)
{
return false;
}
// search for "Mali" in the devices name
if (strstr(device_name, "Mali"))
{
return true;
}
#endif
return false;
}
/// Returns true if the current device supports Neon instructions.
/// Can be used to ensure the CpuAcc backend is supported.
JNIEXPORT jboolean
JNICALL Java_com_arm_armnn_delegate_ArmnnUtils_IsNeonDetected(JNIEnv* env, jclass clazz)
{
return armnn::NeonDetected();
}
}
|
