From e29feb2adb26b0d2b8707f95af01a082d742d241 Mon Sep 17 00:00:00 2001
From: David Garcia Quintas <dgq@google.com>
Date: Mon, 15 Jun 2015 18:08:13 -0700
Subject: [PATCH] Introduced compression levels as an abstraction for the
actual algorithm.
---
include/grpc/compression.h | 13 +++++++++++++
src/core/compression/algorithm.c | 19 +++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/include/grpc/compression.h b/include/grpc/compression.h
index 630fa1656a..207898f605 100644
--- a/include/grpc/compression.h
+++ b/include/grpc/compression.h
@@ -34,6 +34,9 @@
#ifndef GRPC_COMPRESSION_H
#define GRPC_COMPRESSION_H
+/** To be used in channel arguments */
+#define GRPC_COMPRESSION_LEVEL_ARG "grpc.compression_level"
+
/* The various compression algorithms supported by GRPC */
typedef enum {
GRPC_COMPRESS_NONE = 0,
@@ -43,7 +46,17 @@ typedef enum {
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_compression_level;
+
const char *grpc_compression_algorithm_name(
grpc_compression_algorithm algorithm);
+grpc_compression_algorithm grpc_compression_algorithm_for_level(
+ grpc_compression_level level);
+
#endif /* GRPC_COMPRESSION_H */
diff --git a/src/core/compression/algorithm.c b/src/core/compression/algorithm.c
index 36ead843d2..6c25733ba9 100644
--- a/src/core/compression/algorithm.c
+++ b/src/core/compression/algorithm.c
@@ -31,6 +31,7 @@
*
*/
+#include <stdlib.h>
#include <grpc/compression.h>
const char *grpc_compression_algorithm_name(
@@ -47,3 +48,21 @@ const char *grpc_compression_algorithm_name(
}
return "error";
}
+
+/* TODO(dgq): Add the ability to specify parameters to the individual
+ * compression algorithms */
+grpc_compression_algorithm grpc_compression_algorithm_for_level(
+ grpc_compression_level level) {
+ switch (level) {
+ case GRPC_COMPRESS_NONE:
+ return GRPC_COMPRESS_NONE;
+ case GRPC_COMPRESS_LEVEL_LOW:
+ case GRPC_COMPRESS_LEVEL_MED:
+ return GRPC_COMPRESS_DEFLATE;
+ case GRPC_COMPRESS_LEVEL_HIGH:
+ return GRPC_COMPRESS_GZIP;
+ default:
+ /* we shouldn't be making it here */
+ abort();
+ }
+}
--
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