52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
// Copyright 2019 The libgav1 Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "examples/file_reader_factory.h"
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#include <new>
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#include "examples/logging.h"
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namespace libgav1 {
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namespace {
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std::vector<FileReaderFactory::OpenFunction>* GetFileReaderOpenFunctions() {
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static auto* open_functions =
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new (std::nothrow) std::vector<FileReaderFactory::OpenFunction>();
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return open_functions;
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}
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} // namespace
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bool FileReaderFactory::RegisterReader(OpenFunction open_function) {
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if (open_function == nullptr) return false;
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auto* open_functions = GetFileReaderOpenFunctions();
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const size_t num_readers = open_functions->size();
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open_functions->push_back(open_function);
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return open_functions->size() == num_readers + 1;
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}
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std::unique_ptr<FileReaderInterface> FileReaderFactory::OpenReader(
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const std::string& file_name, const bool error_tolerant /*= false*/) {
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for (auto* open_function : *GetFileReaderOpenFunctions()) {
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auto reader = open_function(file_name, error_tolerant);
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if (reader == nullptr) continue;
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return reader;
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}
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LIBGAV1_EXAMPLES_LOG_ERROR("No file reader able to open input");
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return nullptr;
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}
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} // namespace libgav1
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