compression_types.h

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/*
 *
 * Copyright 2016 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_IMPL_CODEGEN_COMPRESSION_TYPES_H
#define GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H
 
#include <grpc/impl/codegen/port_platform.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
  "grpc-internal-encoding-request"
 
#define GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
  "grpc.default_compression_algorithm"
 
#define GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL "grpc.default_compression_level"
 
#define GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
  "grpc.compression_enabled_algorithms_bitset"
 
typedef enum {
  GRPC_COMPRESS_NONE = 0,
  GRPC_COMPRESS_DEFLATE,
  GRPC_COMPRESS_GZIP,
  /* EXPERIMENTAL: Stream compression is currently experimental. */
  GRPC_COMPRESS_STREAM_GZIP,
  /* TODO(ctiller): snappy */
  GRPC_COMPRESS_ALGORITHMS_COUNT
} grpc_compression_algorithm;
 
typedef enum {
  GRPC_COMPRESS_LEVEL_NONE = 0,
  GRPC_COMPRESS_LEVEL_LOW,
  GRPC_COMPRESS_LEVEL_MED,
  GRPC_COMPRESS_LEVEL_HIGH,
  GRPC_COMPRESS_LEVEL_COUNT
} grpc_compression_level;
 
typedef struct grpc_compression_options {
  uint32_t enabled_algorithms_bitset;
 
  struct grpc_compression_options_default_level {
    int is_set;
    grpc_compression_level level;
  } default_level;
 
  struct grpc_compression_options_default_algorithm {
    int is_set;
    grpc_compression_algorithm algorithm;
  } default_algorithm;
} grpc_compression_options;
 
#ifdef __cplusplus
}
#endif
 
#endif /* GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H */