/*

* SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.

* SPDX-License-Identifier: Apache-2.0

*

* 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.

*/

#pragma once

#include <string>

#include <vector>

#include <optional>

#include <nvimgcodec.h>

#include <pybind11/numpy.h>

#include <pybind11/pybind11.h>

#include "image.h"

#include "decode_params.h"

#include "backend.h"

#include "code_stream.h"

#include "metadata.h"

#include "metadata_kind.h"

namespace nvimgcodec {

namespace py = pybind11;

using namespace py::literals;

class ILogger;

class Decoder

{

public:

Decoder(nvimgcodecInstance_t instance, ILogger* logger, int device_id, int max_num_cpu_threads, std::optional<std::vector<Backend>> backends,

const std::string& options);

~Decoder();

py::object decode(const CodeStream* adat, std::optional<Image*> image = std::nullopt, std::optional<DecodeParams> params = std::nullopt, intptr_t cuda_stream = 0);

std::vector<py::object> decode(

const std::vector<const CodeStream*>& data_list, std::optional<std::vector<Image*>> images = std::nullopt, std::optional<DecodeParams> params = std::nullopt, intptr_t cuda_stream = 0);

py::object getMetadata(const CodeStream& code_stream, std::optional<nvimgcodecMetadataKind_t> kind = std::nullopt);

std::optional<Metadata> getMetadata(const CodeStream& code_stream, int id, nvimgcodecMetadataKind_t kind = NVIMGCODEC_METADATA_KIND_TIFF_TAG);

py::object enter();

void exit(const std::optional<pybind11::type>& exc_type, const std::optional<pybind11::object>& exc_value,

const std::optional<pybind11::object>& traceback);

static void exportToPython(py::module& m, nvimgcodecInstance_t instance, ILogger* logger);

private:

std::vector<std::optional<Region>> no_regions(int sz) {

return std::vector<std::optional<Region>>(sz);

}

std::shared_ptr<std::remove_pointer<nvimgcodecDecoder_t>::type> decoder_;

nvimgcodecInstance_t instance_;

ILogger* logger_;

bool is_cpu_only_ = false;

};

} // namespace nvimgcodec