Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / include / grpc / impl / codegen / compression_types.h

diff --git a/legacy-libs/grpc/deps/grpc/include/grpc/impl/codegen/compression_types.h b/legacy-libs/grpc/deps/grpc/include/grpc/impl/codegen/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
+
+/** To be used as initial metadata key for the request of a concrete compression
+ * algorithm */
+#define GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
+  "grpc-internal-encoding-request"
+
+/** To be used in channel arguments.
+ *
+ * \addtogroup grpc_arg_keys
+ * \{ */
+/** Default compression algorithm for the channel.
+ * Its value is an int from the \a grpc_compression_algorithm enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
+  "grpc.default_compression_algorithm"
+/** Default compression level for the channel.
+ * Its value is an int from the \a grpc_compression_level enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL "grpc.default_compression_level"
+/** Compression algorithms supported by the channel.
+ * Its value is a bitset (an int). Bits correspond to algorithms in \a
+ * grpc_compression_algorithm. For example, its LSB corresponds to
+ * GRPC_COMPRESS_NONE, the next bit to GRPC_COMPRESS_DEFLATE, etc.
+ * Unset bits disable support for the algorithm. By default all algorithms are
+ * supported. It's not possible to disable GRPC_COMPRESS_NONE (the attempt will
+ * be ignored). */
+#define GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
+  "grpc.compression_enabled_algorithms_bitset"
+/** \} */
+
+/** The various compression algorithms supported by gRPC (not sorted by
+ * compression level) */
+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;
+
+/** Compression levels allow a party with knowledge of its peer's accepted
+ * encodings to request compression in an abstract way. The level-algorithm
+ * mapping is performed internally and depends on the peer's supported
+ * compression algorithms. */
+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 {
+  /** All algs are enabled by default. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET
+   */
+  uint32_t enabled_algorithms_bitset;
+
+  /** The default compression level. It'll be used in the absence of call
+   * specific settings. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL. If present,
+   * takes precedence over \a default_algorithm.
+   * TODO(dgq): currently only available for server channels. */
+  struct grpc_compression_options_default_level {
+    int is_set;
+    grpc_compression_level level;
+  } default_level;
+
+  /** The default message compression algorithm. It'll be used in the absence of
+   * call specific settings. This option corresponds to the channel argument key
+   * behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM. */
+  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 */