00001 /* 00002 Copyright (c) 2010, The Barbarian Group 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Cinder.h" 00026 00027 #define DEFAULT_COMPRESSION_LEVEL 6 00028 00029 namespace cinder { 00030 00031 class Buffer { 00032 private: 00033 struct Obj { 00034 Obj( void * aBuffer, size_t aSize, bool aOwnsData ); 00035 ~Obj(); 00036 00037 void * mData; 00038 size_t mAllocatedSize; 00039 size_t mDataSize; 00040 bool mOwnsData; 00041 }; 00042 00043 public: 00044 Buffer() {} 00045 Buffer( void * aBuffer, size_t aSize ); 00046 Buffer( size_t size ); 00048 explicit Buffer( std::shared_ptr<class DataSource> dataSource ); 00049 00050 size_t getAllocatedSize() const { return mObj->mAllocatedSize; } 00051 size_t getDataSize() const { return mObj->mDataSize; } 00052 void setDataSize( size_t aSize ) { mObj->mDataSize = aSize; } 00053 00054 void * getData() { return mObj->mData; } 00055 const void * getData() const { return mObj->mData; } 00056 00058 std::shared_ptr<uint8_t> convertToSharedPtr(); 00059 00060 void resize( size_t newSize ); 00061 00062 void copyFrom( const void * aData, size_t length ); 00063 //TODO: copy from region of another buffer 00064 00066 void write( std::shared_ptr<class DataTarget> dataTarget ); 00067 00068 private: 00069 std::shared_ptr<Obj> mObj; 00070 00071 public: 00073 00074 typedef std::shared_ptr<Obj> Buffer::*unspecified_bool_type; 00075 operator unspecified_bool_type() const { return ( mObj.get() == 0 ) ? 0 : &Buffer::mObj; } 00076 void reset() { mObj.reset(); } 00078 }; 00079 00080 Buffer compressBuffer( const Buffer &aBuffer, int8_t compressionLevel = DEFAULT_COMPRESSION_LEVEL, bool resizeResult = true ); 00081 Buffer decompressBuffer( const Buffer &aBuffer, bool resizeResult = true ); 00082 00083 } //namespace