/*

* SPDX-FileCopyrightText: Copyright (c) 2025 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 <nvimgcodec.h>

#include <pybind11/pybind11.h>

#include <sstream>

#include <stdexcept>

#include <iostream>

#include "region.h"

namespace nvimgcodec {

namespace py = pybind11;

using namespace py::literals;

class CodeStreamView

{

public:

CodeStreamView() = default;

CodeStreamView(const nvimgcodecCodeStreamView_t& view)

: impl_{view}

{

impl_.struct_next = nullptr;

}

CodeStreamView(size_t image_idx, const std::optional<Region>& region = std::nullopt,

size_t bitstream_offset = 0, uint32_t limit_images = 0)

{

impl_.image_idx = image_idx;

impl_.region = region.value_or(Region());

impl_.bitstream_offset = bitstream_offset;

impl_.limit_images = limit_images;

}

operator nvimgcodecCodeStreamView_t() const { return impl_; }

static void exportToPython(py::module& m);

size_t imageIdx() const {

return impl_.image_idx;

}

std::optional<Region> region() const {

return impl_.region.ndim != 0 ? std::optional<Region>(Region(impl_.region)) : std::nullopt;

}

size_t bitstreamOffset() const {

return impl_.bitstream_offset;

}

uint32_t limitImages() const {

return impl_.limit_images;

}

nvimgcodecCodeStreamView_t impl_ = {NVIMGCODEC_STRUCTURE_TYPE_CODE_STREAM_VIEW, sizeof(nvimgcodecCodeStreamView_t), nullptr, 0, {}, 0, 0};

};

std::ostream& operator<<(std::ostream& os, const CodeStreamView& v);

} // namespace nvimgcodec