| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPC_COMPRESSION_H |
| #define GRPC_COMPRESSION_H |
| |
| #include <stdlib.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** To be used in channel arguments */ |
| #define GRPC_COMPRESSION_ALGORITHM_ARG "grpc.compression_algorithm" |
| #define GRPC_COMPRESSION_ALGORITHM_STATE_ARG "grpc.compression_algorithm_state" |
| |
| /* The various compression algorithms supported by GRPC */ |
| typedef enum { |
| GRPC_COMPRESS_NONE = 0, |
| GRPC_COMPRESS_DEFLATE, |
| GRPC_COMPRESS_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; |
| |
| /** Parses the first \a name_length bytes of \a name as a |
| * grpc_compression_algorithm instance, updating \a algorithm. Returns 1 upon |
| * success, 0 otherwise. */ |
| int grpc_compression_algorithm_parse(const char *name, size_t name_length, |
| grpc_compression_algorithm *algorithm); |
| |
| /** Updates \a name with the encoding name corresponding to a valid \a |
| * algorithm. Returns 1 upon success, 0 otherwise. */ |
| int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm, |
| char **name); |
| |
| /** Returns the compression level corresponding to \a algorithm. |
| * |
| * It abort()s for unknown algorithms. */ |
| grpc_compression_level grpc_compression_level_for_algorithm( |
| grpc_compression_algorithm algorithm); |
| |
| /** Returns the compression algorithm corresponding to \a level. |
| * |
| * It abort()s for unknown levels . */ |
| grpc_compression_algorithm grpc_compression_algorithm_for_level( |
| grpc_compression_level level); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GRPC_COMPRESSION_H */ |