/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.

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. */

#ifndef PADDLECAPI_H_
#define PADDLECAPI_H_
#include <stdbool.h>
#include <stdint.h>
#include "config.h"
#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
  kPD_NO_ERROR = 0,
  kPD_NULLPTR = 1,
  kPD_OUT_OF_RANGE = 2,
  kPD_PROTOBUF_ERROR = 3,
  kPD_UNDEFINED_ERROR = -1,
} PD_Error;

typedef void* PD_IVector;

int PDIVecCreateNone(PD_IVector* ivec);

int PDIVecDestroy(PD_IVector ivec);

int PDIVectorGet(PD_IVector ivec, int** buffer);

typedef void* PD_Matrix;

int PDMatCreate(PD_Matrix* mat, uint64_t height, uint64_t width, bool useGpu);

int PDMatDestroy(PD_Matrix mat);

int PDMatCopyToRow(PD_Matrix mat, uint64_t rowID, pd_real* rowArray);

int PDMatGetRow(PD_Matrix mat, uint64_t rowID, pd_real** rawRowBuffer);

int PDMatCreateNone(PD_Matrix* mat);

int PDMatGetShape(PD_Matrix mat, uint64_t* height, uint64_t* width);

typedef void* PD_Arguments;

int PDArgsCreateNone(PD_Arguments* args);

int PDArgsDestroy(PD_Arguments args);

int PDArgsGetSize(PD_Arguments args, uint64_t* size);

int PDArgsResize(PD_Arguments args, uint64_t size);

int PDArgsSetValue(PD_Arguments args, uint64_t ID, PD_Matrix mat);

int PDArgsGetValue(PD_Arguments args, uint64_t ID, PD_Matrix mat);

int PDArgsGetIds(PD_Arguments args, uint64_t ID, PD_IVector ids);

typedef void* PD_GradiemtMachine;

int PDGradientMachineCreateForPredict(PD_GradiemtMachine* machine,
                                      void* modelConfigProtobuf,
                                      int size);

int PDGradientMachineLoadParameterFromDisk(PD_GradiemtMachine machine,
                                           const char* path);

int PDGradientMachineForward(PD_GradiemtMachine machine,
                             PD_Arguments inArgs,
                             PD_Arguments outArgs,
                             bool isTrain);

int PDGradientMachineCreateSharedParam(PD_GradiemtMachine origin,
                                       void* modelConfigProtobuf,
                                       int size,
                                       PD_GradiemtMachine* slave);

int PDGradientMachineDestroy(PD_GradiemtMachine machine);

int PDInit(int argc, char** argv);

#ifdef __cplusplus
}
#endif

#endif  // PADDLECAPI_H_