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/*
*
* 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_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
#define GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
#include <grpc/support/port_platform.h>
#include <grpc/impl/codegen/compression_types.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
GRPC_MESSAGE_COMPRESS_NONE = 0,
GRPC_MESSAGE_COMPRESS_DEFLATE,
GRPC_MESSAGE_COMPRESS_GZIP,
/* TODO(ctiller): snappy */
GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT
} grpc_message_compression_algorithm;
/** Stream compresssion algorithms supported by gRPC */
typedef enum {
GRPC_STREAM_COMPRESS_NONE = 0,
GRPC_STREAM_COMPRESS_GZIP,
GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT
} grpc_stream_compression_algorithm;
/* Interfaces performing transformation between compression algorithms and
* levels. */
grpc_message_compression_algorithm
grpc_compression_algorithm_to_message_compression_algorithm(
grpc_compression_algorithm algo);
grpc_stream_compression_algorithm
grpc_compression_algorithm_to_stream_compression_algorithm(
grpc_compression_algorithm algo);
uint32_t grpc_compression_bitset_to_message_bitset(uint32_t bitset);
uint32_t grpc_compression_bitset_to_stream_bitset(uint32_t bitset);
uint32_t grpc_compression_bitset_from_message_stream_compression_bitset(
uint32_t message_bitset, uint32_t stream_bitset);
int grpc_compression_algorithm_from_message_stream_compression_algorithm(
grpc_compression_algorithm* algorithm,
grpc_message_compression_algorithm message_algorithm,
grpc_stream_compression_algorithm stream_algorithm);
/* Interfaces for message compression. */
int grpc_message_compression_algorithm_name(
grpc_message_compression_algorithm algorithm, const char** name);
grpc_message_compression_algorithm grpc_message_compression_algorithm_for_level(
grpc_compression_level level, uint32_t accepted_encodings);
int grpc_message_compression_algorithm_parse(
grpc_slice value, grpc_message_compression_algorithm* algorithm);
/* Interfaces for stream compression. */
int grpc_stream_compression_algorithm_parse(
grpc_slice value, grpc_stream_compression_algorithm* algorithm);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H */
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