v01

thirdparty/ros/ros_comm/utilities/roslz4/include/roslz4/lz4s.h

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+/*********************************************************************
+* Software License Agreement (BSD License)
+*
+*  Copyright (c) 2014, Ben Charrow
+*  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 Willow Garage, 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 ROSLZ4_LZ4S_H
+#define ROSLZ4_LZ4S_H
+
+#include <lz4.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Return codes
+const int ROSLZ4_MEMORY_ERROR = -5;
+const int ROSLZ4_PARAM_ERROR = -4;
+const int ROSLZ4_DATA_ERROR = -3;
+const int ROSLZ4_OUTPUT_SMALL = -2;
+const int ROSLZ4_ERROR = -1;
+const int ROSLZ4_OK = 0;
+const int ROSLZ4_STREAM_END = 2;
+
+// Actions
+const int ROSLZ4_RUN = 0;
+const int ROSLZ4_FINISH = 1;
+
+typedef struct {
+  char *input_next;
+  int input_left;
+
+  char *output_next;
+  int output_left;
+
+  int total_in;
+  int total_out;
+
+  int block_size_id;
+
+  // Internal use
+  void *state;
+} roslz4_stream;
+
+// Low level functions
+int roslz4_blockSizeFromIndex(int block_id);
+
+int roslz4_compressStart(roslz4_stream *stream, int block_size_id);
+int roslz4_compress(roslz4_stream *stream, int action);
+void roslz4_compressEnd(roslz4_stream *stream);
+
+int roslz4_decompressStart(roslz4_stream *stream);
+int roslz4_decompress(roslz4_stream *stream);
+void roslz4_decompressEnd(roslz4_stream *str);
+
+// Oneshot compression / decompression
+int roslz4_buffToBuffCompress(char *input, unsigned int input_size,
+                              char *output, unsigned int *output_size,
+                              int block_size_id);
+int roslz4_buffToBuffDecompress(char *input, unsigned int input_size,
+                                char *output, unsigned int *output_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // ROSLZ4_LZ4S_H