diff options
Diffstat (limited to 'tensorflow/core/lib/io/zlib_compression_options.h')
| -rw-r--r-- | tensorflow/core/lib/io/zlib_compression_options.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/tensorflow/core/lib/io/zlib_compression_options.h b/tensorflow/core/lib/io/zlib_compression_options.h index dc7218e866..238c1464fb 100644 --- a/tensorflow/core/lib/io/zlib_compression_options.h +++ b/tensorflow/core/lib/io/zlib_compression_options.h @@ -16,8 +16,6 @@ limitations under the License. #ifndef TENSORFLOW_LIB_IO_ZLIB_COMPRESSION_OPTIONS_H_ #define TENSORFLOW_LIB_IO_ZLIB_COMPRESSION_OPTIONS_H_ -#include <zlib.h> - #include "tensorflow/core/platform/types.h" namespace tensorflow { @@ -25,11 +23,14 @@ namespace io { class ZlibCompressionOptions { public: + ZlibCompressionOptions(); + static ZlibCompressionOptions DEFAULT(); static ZlibCompressionOptions RAW(); static ZlibCompressionOptions GZIP(); - int8 flush_mode = Z_NO_FLUSH; + // Defaults to Z_NO_FLUSH + int8 flush_mode; // Size of the buffer used for caching the data read from source file. int64 input_buffer_size = 256 << 10; @@ -71,7 +72,9 @@ class ZlibCompressionOptions { // window_bits value provided used while compressing. If a compressed stream // with a larger window size is given as input, inflate() will return with the // error code Z_DATA_ERROR instead of trying to allocate a larger window. - int8 window_bits = MAX_WBITS; + // + // Defaults to MAX_WBITS + int8 window_bits; // From the zlib manual (http://www.zlib.net/manual.html): // The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: @@ -79,10 +82,10 @@ class ZlibCompressionOptions { // (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION // requests a default compromise between speed and compression (currently // equivalent to level 6). - int8 compression_level = Z_DEFAULT_COMPRESSION; + int8 compression_level; - // The only one supported at this time. - int8 compression_method = Z_DEFLATED; + // Only Z_DEFLATED is supported at this time. + int8 compression_method; // From the zlib manual (http://www.zlib.net/manual.html): // The mem_level parameter specifies how much memory should be allocated for @@ -106,7 +109,7 @@ class ZlibCompressionOptions { // but not the correctness of the compressed output even if it is not set // appropriately. Z_FIXED prevents the use of dynamic Huffman codes, allowing // for a simpler decoder for special applications. - int8 compression_strategy = Z_DEFAULT_STRATEGY; + int8 compression_strategy; }; inline ZlibCompressionOptions ZlibCompressionOptions::DEFAULT() { |