/*
 * Copyright (c) 2019-2020, NVIDIA CORPORATION.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the NVIDIA CORPORATION nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#ifndef TT2I_TACOTRON2LOADER_H
#define TT2I_TACOTRON2LOADER_H

#include "tacotron2Instance.h"

#include <memory>
#include <string>

// forward declaration
namespace nvinfer1
{
class ILogger;
class IBuilder;
} // namespace nvinfer1

namespace tts
{

class EngineCache;

class Tacotron2Loader
{
public:
    /**
     * @brief Load a new Tacotron2Instance from an engine file or a json file.
     *
     * @param cache The engine cache.
     * @param builder The TensorRT Engine Builder.
     * @param filename The name of the engine/json file.
     * @param inputLength The maximum length input to support.
     * @param fp16 If building an engine from a json file, whether or not to
     * allow fp16 operations. If loading an engine file, this input is ignored.
     * @param batchSize If building an engine from a json file, the maximum batch
     * size to support. If loading an engine file, this input is ignored.
     *
     * @return The newly created Tacotron2Instance.
     */
  static std::shared_ptr<Tacotron2Instance> load(
      EngineCache& cache,
      nvinfer1::IBuilder& builder,
      const std::string& filename,
      const int inputLength = 400,
      bool fp16 = false,
      const int batchSize = 8);
};

} // namespace tts

#endif
