/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "android.hardware.neuralnetworks@1.0-impl-hvx"

#include "HexagonController.h"

#define LOAD_HEXAGON_FUNCTION(name) \
    mFn_##name = loadFunction<hexagon_nn_controller_##name##_fn>("hexagon_nn_controller_" #name);

#define CLOSE_HEXAGON_FUNCTION(name) mFn_##name = nullptr;

#define FOR_EACH_FUNCTION(MACRO)   \
    MACRO(init)                    \
    MACRO(getlog)                  \
    MACRO(snpprint)                \
    MACRO(set_debug_level)         \
    MACRO(prepare)                 \
    MACRO(append_node)             \
    MACRO(append_const_node)       \
    MACRO(execute_new)             \
    MACRO(execute)                 \
    MACRO(teardown)                \
    MACRO(get_perfinfo)            \
    MACRO(reset_perfinfo)          \
    MACRO(version)                 \
    MACRO(last_execution_cycles)   \
    MACRO(GetHexagonBinaryVersion) \
    MACRO(PrintLog)                \
    MACRO(op_name_to_id)           \
    MACRO(op_id_to_name)           \
    MACRO(disable_dcvs)            \
    MACRO(set_powersave_level)     \
    MACRO(config)                  \
    MACRO(boost)                   \
    MACRO(slow)

#define CONTROLLER_CHECK(function, ...)    \
    if (mFn_##function == nullptr) {       \
        return -1;                         \
    }                                      \
    int err = mFn_##function(__VA_ARGS__); \
    if (err != 0) {                        \
        return err;                        \
    }                                      \
    return 0;

namespace android {
namespace hardware {
namespace neuralnetworks {
namespace V1_0 {
namespace implementation {
namespace hexagon {

const char Controller::kFilename[] = "libhexagon_nn_controller.so";

Controller::Controller() {
    openNnlib();
}

Controller::~Controller() {
    closeNnlib();
}

bool Controller::openNnlib() {
    mHandle = dlopen(kFilename, RTLD_LAZY | RTLD_LOCAL);
    HEXAGON_SOFT_ASSERT_NE(mHandle, 0,
                           "FAILED TO LOAD LIBRARY " /* << kFilename << ": " << dlerror()*/);
    FOR_EACH_FUNCTION(LOAD_HEXAGON_FUNCTION)
    return true;
}

bool Controller::closeNnlib() {
    FOR_EACH_FUNCTION(CLOSE_HEXAGON_FUNCTION)
    if (mHandle != nullptr) {
        int err = dlclose(mHandle);
        mHandle = nullptr;
        HEXAGON_SOFT_ASSERT_EQ(err, 0, "FAILED TO CLOSE LIBRARY " << kFilename);
    }
    return true;
}

bool Controller::resetNnlib() {
    return closeNnlib() && openNnlib();
}

Controller& Controller::getInstance() {
    static Controller instance{};
    return instance;
}

int Controller::init(hexagon_nn_nn_id* g) {
    CONTROLLER_CHECK(init, g);
}

int Controller::getlog(hexagon_nn_nn_id id, unsigned char* buf, uint32_t length) {
    CONTROLLER_CHECK(getlog, id, buf, length);
}

int Controller::snpprint(hexagon_nn_nn_id id, unsigned char* buf, uint32_t length) {
    CONTROLLER_CHECK(snpprint, id, buf, length);
}

int Controller::set_debug_level(hexagon_nn_nn_id id, int level) {
    CONTROLLER_CHECK(set_debug_level, id, level);
}

int Controller::prepare(hexagon_nn_nn_id id) {
    CONTROLLER_CHECK(prepare, id);
}

int Controller::append_node(hexagon_nn_nn_id id, uint32_t node_id, op_type operation,
                            hexagon_nn_padding_type padding, const hexagon_nn_input* inputs,
                            uint32_t num_inputs, const hexagon_nn_output* outputs,
                            uint32_t num_outputs) {
    CONTROLLER_CHECK(append_node, id, node_id, operation, padding, inputs, num_inputs, outputs,
                     num_outputs);
}

int Controller::append_const_node(hexagon_nn_nn_id id, uint32_t node_id, uint32_t batches,
                                  uint32_t height, uint32_t width, uint32_t depth,
                                  const uint8_t* data, uint32_t data_len) {
    CONTROLLER_CHECK(append_const_node, id, node_id, batches, height, width, depth, data, data_len);
}

int Controller::execute_new(hexagon_nn_nn_id id, const hexagon_nn_tensordef* inputs,
                            uint32_t n_inputs, hexagon_nn_tensordef* outputs, uint32_t n_outputs) {
    CONTROLLER_CHECK(execute_new, id, inputs, n_inputs, outputs, n_outputs);
}

int Controller::execute(hexagon_nn_nn_id id, uint32_t batches_in, uint32_t height_in,
                        uint32_t width_in, uint32_t depth_in, const uint8_t* data_in,
                        uint32_t data_len_in, uint32_t* batches_out, uint32_t* height_out,
                        uint32_t* width_out, uint32_t* depth_out, uint8_t* data_out,
                        uint32_t data_out_max, uint32_t* data_out_size) {
    CONTROLLER_CHECK(execute, id, batches_in, height_in, width_in, depth_in, data_in, data_len_in,
                     batches_out, height_out, width_out, depth_out, data_out, data_out_max,
                     data_out_size);
}

int Controller::teardown(hexagon_nn_nn_id id) {
    CONTROLLER_CHECK(teardown, id);
}

int Controller::get_perfinfo(hexagon_nn_nn_id id, hexagon_nn_perfinfo* info_out,
                             unsigned int info_out_len, unsigned int* n_items_out) {
    CONTROLLER_CHECK(get_perfinfo, id, info_out, info_out_len, n_items_out);
}

int Controller::reset_perfinfo(hexagon_nn_nn_id id, uint32_t event) {
    CONTROLLER_CHECK(reset_perfinfo, id, event);
}

int Controller::version(int* ver) {
    CONTROLLER_CHECK(version, ver);
}

int Controller::last_execution_cycles(hexagon_nn_nn_id id, unsigned int* cycles_lo,
                                      unsigned int* cycles_hi) {
    CONTROLLER_CHECK(last_execution_cycles, id, cycles_lo, cycles_hi);
}

int Controller::GetHexagonBinaryVersion(int* ver) {
    CONTROLLER_CHECK(GetHexagonBinaryVersion, ver);
}

int Controller::PrintLog(const uint8_t* data_in, unsigned int data_in_len) {
    CONTROLLER_CHECK(PrintLog, data_in, data_in_len);
}

int Controller::op_name_to_id(const char* name, unsigned int* id) {
    CONTROLLER_CHECK(op_name_to_id, name, id);
}

int Controller::op_id_to_name(const unsigned int id, char* name, int name_len) {
    CONTROLLER_CHECK(op_id_to_name, id, name, name_len);
}

int Controller::disable_dcvs() {
    CONTROLLER_CHECK(disable_dcvs);
}

int Controller::set_powersave_level(unsigned int level) {
    CONTROLLER_CHECK(set_powersave_level, level);
}

int Controller::config() {
    CONTROLLER_CHECK(config);
}

int Controller::boost(int bus_usage) {
    CONTROLLER_CHECK(boost, bus_usage);
}

int Controller::slow() {
    CONTROLLER_CHECK(slow);
}

}  // namespace hexagon
}  // namespace implementation
}  // namespace V1_0
}  // namespace neuralnetworks
}  // namespace hardware
}  // namespace android