feat: partial witx api of build and load

core/iwasm/libraries/wasi-nn/wasi_nn.c

@@ -1,3 +1,5 @@
+#include "wasi_nn.h"
+
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
@@ -8,6 +10,74 @@
 #include <tensorflow/lite/model.h>
 #include <tensorflow/lite/optional_debug_tools.h> 
 
-void func() {
+std::unique_ptr<tflite::Interpreter> interpreter = NULL;
+std::unique_ptr<tflite::FlatBufferModel> model =NULL;
+
+//Load model functions 
+
+int main()
+{
+    char* f=read_file("ssd_tflite");
+
+    uint8_t *builder = (uint8_t*) f;
+
+    uint8_t *builder_array[1] = { builder };
+
+    load(builder_array, 1);
+
+    load(model builder, graph_encoding encoding)
+}
+
+
+void load(graph_builder_array builder, graph_encoding encoding)
+{
+    model = tflite::FlatBufferModel::BuildFromBuffer(builder[0]);
+    tflite::ops::builtin::BuiltinOpResolver resolver;
+	tflite::InterpreterBuilder builder(*model, resolver);
+	builder(&interpreter);
 
 }
+
+void init_execution_context()
+{
+
+}
+
+//run inference functions
+
+void set_input()
+{
+    interpreter->AllocateTensors() ;
+
+}
+
+void compute (graph_execution_context context )
+{
+
+    return 
+}
+
+
+void get_output()
+{
+
+}
+
+/*
+static NativeSymbol native_symbols_wasi_nn[] = {
+    REG_NATIVE_FUNC(args_get, "(**)i"),
+    REG_NATIVE_FUNC(args_sizes_get, "(**)i"),
+    REG_NATIVE_FUNC(clock_res_get, "(i*)i"),
+    REG_NATIVE_FUNC(clock_time_get, "(iI*)i"),
+    REG_NATIVE_FUNC(environ_get, "(**)i"),
+    REG_NATIVE_FUNC(environ_sizes_get, "(**)i"),
+};
+*/
+
+
+uint32
+get_wasi_nn_export_apis(NativeSymbol **p_libc_wasi_apis)
+{
+    *p_libc_wasi_apis = native_symbols_libc_wasi;
+    return sizeof(native_symbols_libc_wasi) / sizeof(NativeSymbol);
+}

core/iwasm/libraries/wasi-nn/wasi_nn.h

@@ -9,3 +9,28 @@
 #include <stddef.h>
 #include <stdint.h>
 
+typedef uint32_t buffer_size;
+
+typedef enum:uint16_t {sucess, invalid_argument, missing_memory, busy } nn_erno; 
+
+typedef uint32_t *  tensor_dimensions;
+
+typedef enum:uint8_t {f16, f32, u8, i32};
+
+typedef struct {
+
+tensor_dimensions dimensions;
+
+tensor_type type;
+
+tensor_data data;
+
+} tensor ;
+
+typedef uint8_t * graph_builder;
+
+typedef graph_builder * graph_builder_array;
+
+typedef handle graph;
+
+typedef enum {openvino=0, tensorflow,onnx } graph_encoding;