[JAVA API]java tensor api setData and getData support Int type, test=develop (#2583)

lite/api/android/jni/native/tensor_jni.cc

@@ -120,6 +120,22 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_nativeSetData___3B(
   return JNI_TRUE;
 }
 
+JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_nativeSetData___3I(
+    JNIEnv *env, jobject jtensor, jintArray buf) {
+  std::unique_ptr<Tensor> *tensor = get_writable_tensor_pointer(env, jtensor);
+  if (tensor == nullptr || (*tensor == nullptr)) {
+    return JNI_FALSE;
+  }
+  int64_t buf_size = (int64_t)env->GetArrayLength(buf);
+  if (buf_size != product((*tensor)->shape())) {
+    return JNI_FALSE;
+  }
+
+  int32_t *input = (*tensor)->mutable_data<int32_t>();
+  env->GetIntArrayRegion(buf, 0, buf_size, input);
+  return JNI_TRUE;
+}
+
 JNIEXPORT jfloatArray JNICALL
 Java_com_baidu_paddle_lite_Tensor_getFloatData(JNIEnv *env, jobject jtensor) {
   if (is_const_tensor(env, jtensor)) {
@@ -148,6 +164,20 @@ Java_com_baidu_paddle_lite_Tensor_getByteData(JNIEnv *env, jobject jtensor) {
   }
 }
 
+JNIEXPORT jintArray JNICALL
+Java_com_baidu_paddle_lite_Tensor_getIntData(JNIEnv *env, jobject jtensor) {
+  if (is_const_tensor(env, jtensor)) {
+    std::unique_ptr<const Tensor> *tensor =
+        get_read_only_tensor_pointer(env, jtensor);
+    return cpp_array_to_jintarray(
+        env, (*tensor)->data<int32_t>(), product((*tensor)->shape()));
+  } else {
+    std::unique_ptr<Tensor> *tensor = get_writable_tensor_pointer(env, jtensor);
+    return cpp_array_to_jintarray(
+        env, (*tensor)->data<int32_t>(), product((*tensor)->shape()));
+  }
+}
+
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_deleteCppTensor(
     JNIEnv *env, jobject jtensor, jlong java_pointer) {
   if (java_pointer == 0) {

lite/api/android/jni/native/tensor_jni.h

@@ -16,8 +16,8 @@
 #include <jni.h>
 /* Header for class com_baidu_paddle_lite_Tensor */
 
-#ifndef PADDLE_FLUID_LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_
-#define PADDLE_FLUID_LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_
+#ifndef LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_
+#define LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -49,6 +49,14 @@ Java_com_baidu_paddle_lite_Tensor_getFloatData(JNIEnv *, jobject);
 JNIEXPORT jbyteArray JNICALL
 Java_com_baidu_paddle_lite_Tensor_getByteData(JNIEnv *, jobject);
 
+/*
+ * Class:     com_baidu_paddle_lite_Tensor
+ * Method:    getIntData
+ * Signature: ()[I
+ */
+JNIEXPORT jintArray JNICALL
+Java_com_baidu_paddle_lite_Tensor_getIntData(JNIEnv *, jobject);
+
 /*
  * Class:     com_baidu_paddle_lite_Tensor
  * Method:    nativeResize
@@ -73,6 +81,14 @@ JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_nativeSetData___3F(
 JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_nativeSetData___3B(
     JNIEnv *, jobject, jbyteArray);
 
+/*
+ * Class:     com_baidu_paddle_lite_Tensor
+ * Method:    nativeSetData
+ * Signature: ([I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_com_baidu_paddle_lite_Tensor_nativeSetData___3I(
+    JNIEnv *, jobject, jintArray);
+
 /*
  * Class:     com_baidu_paddle_lite_Tensor
  * Method:    deleteCppTensor
@@ -87,4 +103,4 @@ Java_com_baidu_paddle_lite_Tensor_deleteCppTensor(JNIEnv *, jobject, jlong);
 #ifdef __cplusplus
 }
 #endif
-#endif  // PADDLE_FLUID_LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_
+#endif  // LITE_API_ANDROID_JNI_NATIVE_TENSOR_JNI_H_

lite/api/android/jni/src/com/baidu/paddle/lite/Tensor.java

@@ -108,6 +108,19 @@ public class Tensor {
         return nativeSetData(buf);
     }
 
+    /**
+     * Set the tensor int data.
+     *
+     * @param buf the int array buffer which will be copied into tensor.
+     * @return true if set data successfully.
+     */
+    public boolean setData(int[] buf) {
+        if (readOnly) {
+            return false;
+        }
+        return nativeSetData(buf);
+    }
+
     /**
      * @return shape of the tensor as long array.
      */
@@ -123,12 +136,19 @@ public class Tensor {
      */
     public native byte[] getByteData();
 
+    /**
+     * @return the tensor data as int array.
+     */
+    public native int[] getIntData();
+
     private native boolean nativeResize(long[] dims);
 
     private native boolean nativeSetData(float[] buf);
 
     private native boolean nativeSetData(byte[] buf);
 
+    private native boolean nativeSetData(int[] buf);
+
     /**
      * Delete C++ Tenor object pointed by the input pointer, which is presented by a
      * long value.