00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2014, Ben Charrow 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of Willow Garage, Inc. nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 ********************************************************************/ 00034 00035 #ifndef ROSLZ4_LZ4S_H 00036 #define ROSLZ4_LZ4S_H 00037 00038 #include <lz4.h> 00039 00040 #ifdef __cplusplus 00041 extern "C" { 00042 #endif 00043 00044 // Return codes 00045 const int ROSLZ4_MEMORY_ERROR = -5; 00046 const int ROSLZ4_PARAM_ERROR = -4; 00047 const int ROSLZ4_DATA_ERROR = -3; 00048 const int ROSLZ4_OUTPUT_SMALL = -2; 00049 const int ROSLZ4_ERROR = -1; 00050 const int ROSLZ4_OK = 0; 00051 const int ROSLZ4_STREAM_END = 2; 00052 00053 // Actions 00054 const int ROSLZ4_RUN = 0; 00055 const int ROSLZ4_FINISH = 1; 00056 00057 typedef struct { 00058 char *input_next; 00059 int input_left; 00060 00061 char *output_next; 00062 int output_left; 00063 00064 int total_in; 00065 int total_out; 00066 00067 int block_size_id; 00068 00069 // Internal use 00070 void *state; 00071 } roslz4_stream; 00072 00073 // Low level functions 00074 int roslz4_blockSizeFromIndex(int block_id); 00075 00076 int roslz4_compressStart(roslz4_stream *stream, int block_size_id); 00077 int roslz4_compress(roslz4_stream *stream, int action); 00078 void roslz4_compressEnd(roslz4_stream *stream); 00079 00080 int roslz4_decompressStart(roslz4_stream *stream); 00081 int roslz4_decompress(roslz4_stream *stream); 00082 void roslz4_decompressEnd(roslz4_stream *str); 00083 00084 // Oneshot compression / decompression 00085 int roslz4_buffToBuffCompress(char *input, unsigned int input_size, 00086 char *output, unsigned int *output_size, 00087 int block_size_id); 00088 int roslz4_buffToBuffDecompress(char *input, unsigned int input_size, 00089 char *output, unsigned int *output_size); 00090 00091 #ifdef __cplusplus 00092 } 00093 #endif 00094 00095 #endif // ROSLZ4_LZ4S_H