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65ef82a946
G-API: oneVPL (simplification) Add data adapter & Cfg params * Add cfg_param & data_provider * Fix compilation after rebase * Apply some comments * Apply default ctor outside class definition comment * Apply cfg param in source * Fix compilation: add virtual dtor * Move cfg_params in regular gapi src list * Fix compilation: add export.hpp * Add errno.h * Add errno.h * Apply namespace comment * Add several Doxygen & rename cfg_param * Fix build * Update Doxygen docs for onevpl * Fix typo
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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//
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// Copyright (C) 2021 Intel Corporation
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#include <errno.h>
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#include "streaming/onevpl/file_data_provider.hpp"
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namespace cv {
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namespace gapi {
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namespace wip {
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namespace onevpl {
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FileDataProvider::FileDataProvider(const std::string& file_path) :
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source_handle(fopen(file_path.c_str(), "rb"), &fclose) {
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if (!source_handle) {
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throw DataProviderSystemErrorException(errno,
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"FileDataProvider: cannot open source file: " + file_path);
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}
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}
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FileDataProvider::~FileDataProvider() = default;
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size_t FileDataProvider::fetch_data(size_t out_data_bytes_size, void* out_data) {
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if (empty()) {
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return 0;
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}
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size_t ret = fread(out_data, 1, out_data_bytes_size, source_handle.get());
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if (ret == 0) {
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if (feof(source_handle.get())) {
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source_handle.reset();
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} else {
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throw DataProviderSystemErrorException (errno, "FileDataProvider::fetch_data error read");
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}
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}
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return ret;
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}
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bool FileDataProvider::empty() const {
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return !source_handle;
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}
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} // namespace onevpl
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} // namespace wip
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} // namespace gapi
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} // namespace cv
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