chromium/third_party/grpc/src/src/core/lib/compression/compression_internal.h

//
//
// Copyright 2017 gRPC authors.
//
// 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.
//
//

#ifndef GRPC_SRC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
#define GRPC_SRC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H

#include <grpc/support/port_platform.h>

#include <stdint.h>

#include <initializer_list>

#include "absl/strings/string_view.h"
#include "absl/types/optional.h"

#include <grpc/impl/compression_types.h>

#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/gprpp/bitset.h"
#include "src/core/lib/slice/slice.h"

namespace grpc_core {

// Given a string naming a compression algorithm, return the corresponding enum
// or nullopt on error.
absl::optional<grpc_compression_algorithm> ParseCompressionAlgorithm(
    absl::string_view algorithm);
// Convert a compression algorithm to a string. Returns nullptr if a name is not
// known.
const char* CompressionAlgorithmAsString(grpc_compression_algorithm algorithm);
// Retrieve the default compression algorithm from channel args, return nullopt
// if not found.
absl::optional<grpc_compression_algorithm>
DefaultCompressionAlgorithmFromChannelArgs(const ChannelArgs& args);

// A set of grpc_compression_algorithm values.
class CompressionAlgorithmSet { … };

}  // namespace grpc_core

#endif  // GRPC_SRC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H