1/* 2OpenCV for Android NDK 3Copyright (c) 2006-2009 SIProp Project http://www.siprop.org/ 4 5This software is provided 'as-is', without any express or implied warranty. 6In no event will the authors be held liable for any damages arising from the use of this software. 7Permission is granted to anyone to use this software for any purpose, 8including commercial applications, and to alter it and redistribute it freely, 9subject to the following restrictions: 10 111. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 122. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 133. This notice may not be removed or altered from any source distribution. 14*/ 15#include "WLNonFileByteStream.h" 16 17///////////////////////////// WLNonFileByteStream /////////////////////////////////// 18 19WLNonFileByteStream::WLNonFileByteStream() 20{ 21 m_start = m_end = m_current = 0; 22 _size = 0; 23 m_is_opened = false; 24} 25 26 27WLNonFileByteStream::~WLNonFileByteStream() 28{ 29 Deallocate(); 30} 31 32 33void WLNonFileByteStream::Allocate(int data_size) 34{ 35 if(!m_start) 36 m_start = new uchar[data_size]; 37 38 m_end = m_start + data_size; 39 m_current = m_start; 40} 41 42void WLNonFileByteStream::Deallocate() 43{ 44 if(m_start) 45 { 46 delete [] m_start; 47 m_start = 0; 48 } 49} 50 51bool WLNonFileByteStream::Open(int data_size) 52{ 53 Close(); 54 Allocate(data_size); 55 56 m_is_opened = true; 57 m_current = m_start; 58 _size = data_size; 59 60 return true; 61} 62 63 64void WLNonFileByteStream::Close() 65{ 66 m_is_opened = false; 67 Deallocate(); 68} 69 70 71void WLNonFileByteStream::PutByte( int val ) 72{ 73 *m_current++ = (uchar)val; 74} 75 76 77void WLNonFileByteStream::PutBytes( const void* buffer, int count ) 78{ 79 uchar* data = (uchar*)buffer; 80 81 assert( data && m_current && count >= 0 ); 82 83 while( count ) 84 { 85 int l = (int)(m_end - m_current); 86 87 if( l > count ) 88 l = count; 89 90 if( l > 0 ) 91 { 92 memcpy( m_current, data, l ); 93 m_current += l; 94 data += l; 95 count -= l; 96 } 97 } 98} 99 100 101void WLNonFileByteStream::PutWord( int val ) 102{ 103 uchar *current = m_current; 104 105 if( current+1 < m_end ) 106 { 107 current[0] = (uchar)val; 108 current[1] = (uchar)(val >> 8); 109 m_current = current + 2; 110 } 111 else 112 { 113 PutByte(val); 114 PutByte(val >> 8); 115 } 116} 117 118 119void WLNonFileByteStream::PutDWord( int val ) 120{ 121 uchar *current = m_current; 122 123 if( current+3 < m_end ) 124 { 125 current[0] = (uchar)val; 126 current[1] = (uchar)(val >> 8); 127 current[2] = (uchar)(val >> 16); 128 current[3] = (uchar)(val >> 24); 129 m_current = current + 4; 130 } 131 else 132 { 133 PutByte(val); 134 PutByte(val >> 8); 135 PutByte(val >> 16); 136 PutByte(val >> 24); 137 } 138} 139 140 141uchar* WLNonFileByteStream::GetByte() 142{ 143 return m_start; 144} 145 146int WLNonFileByteStream::GetSize() 147{ 148 return _size; 149} 150 151