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/* 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. */

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#ifndef __PADDLE_CAPI_ARGUMENTS_H__
#define __PADDLE_CAPI_ARGUMENTS_H__

#include <stdint.h>
#include "config.h"
#include "error.h"
#include "matrix.h"
#include "vector.h"

/**
 * Arguments functions. Each argument means layer output. Arguments means a
 * array of arguemnt.
 */
typedef void* paddle_arguments;

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief paddle_arguments_create_none Create a array of arguments, which size
 * is zero.
 * @return Arguemnts
 */
PD_API paddle_arguments paddle_arguments_create_none();

/**
 * @brief paddle_arguments_destroy Destroy the arguments
 * @param args arguments to destroy
 * @return paddle_error
 */
PD_API paddle_error paddle_arguments_destroy(paddle_arguments args);

/**
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 * @brief paddle_arguments_get_size Get size of arguments array
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 * @param [in] args arguments array
 * @param [out] size array size
 * @return paddle_error
 */
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PD_API paddle_error paddle_arguments_get_size(paddle_arguments args,
                                              uint64_t* size);
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/**
 * @brief PDArgsResize Resize a arguments array.
 * @param args arguments array.
 * @param size target size of array
 * @return paddle_error
 */
PD_API paddle_error paddle_arguments_resize(paddle_arguments args,
                                            uint64_t size);

/**
 * @brief PDArgsSetValue Set value matrix of one argument in array, which index
 *        is `ID`.
 * @param args arguments array
 * @param ID array index
 * @param mat matrix pointer
 * @return paddle_error
 */
PD_API paddle_error paddle_arguments_set_value(paddle_arguments args,
                                               uint64_t ID,
                                               paddle_matrix mat);

/**
 * @brief PDArgsGetValue Get value matrix of one argument in array, which index
 *        is `ID`.
 * @param [in] args arguments array
 * @param [in] ID array index
 * @param [out] mat matrix pointer
 * @return paddle_error
 */
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PD_API paddle_error paddle_arguments_get_value(paddle_arguments args,
                                               uint64_t ID,
                                               paddle_matrix mat);
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/**
 * @brief PDArgsGetIds Get the integer vector of one argument in array, which
 *        index is `ID`.
 * @param args arguments array
 * @param ID array index
 * @param ids integer vector pointer
 * @return paddle_error
 */
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PD_API paddle_error paddle_arguments_get_ids(paddle_arguments args,
                                             uint64_t ID,
                                             paddle_ivector ids);
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/**
 * @brief PDArgsSetIds Set the integer vector of one argument in array, which
 *        index is `ID`.
 * @param [in] args arguments array
 * @param [in] ID array index
 * @param [out] ids integer vector pointer
 * @return paddle_error
 */
PD_API paddle_error paddle_arguments_set_ids(paddle_arguments args,
                                             uint64_t ID,
                                             paddle_ivector ids);

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/**
 * @brief paddle_arguments_set_frame_shape Set the fram size of one argument
 *        in array, which index is `ID`.
 * @param [in] args arguments array
 * @param [in] ID array index
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 * @param [in] frameHeight maximum height of input images
 * @param [in] frameWidth maximum width of input images
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 * @return paddle_error
 */
PD_API paddle_error paddle_arguments_set_frame_shape(paddle_arguments args,
                                                     uint64_t ID,
                                                     uint64_t frameHeight,
                                                     uint64_t frameWidth);

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/**
 * @brief PDArgsSetSequenceStartPos Set sequence start position vector of one
 *        argument in array, which index is `ID`.
 * @param args arguments array
 * @param ID array index
 * @param seqPos sequence position array.
 * @return paddle_error
 */
PD_API paddle_error
paddle_arguments_set_sequence_start_pos(paddle_arguments args,
                                        uint64_t ID,
                                        uint32_t nestedLevel,
                                        paddle_ivector seqPos);
/**
 * @brief PDArgsGetSequenceStartPos Get sequence start position vector of one
 *        argument in array, which index is `ID`.
 * @param [in] args arguments array
 * @param [in] ID array index
 * @param [out] seqPos sequence position array
 * @return paddle_error
 */
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PD_API paddle_error
paddle_arguments_get_sequence_start_pos(paddle_arguments args,
                                        uint64_t ID,
                                        uint32_t nestedLevel,
                                        paddle_ivector seqPos);
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#ifdef __cplusplus
}
#endif

#endif