/src/assimp/contrib/Open3DGC/o3dgcBinaryStream.h

Source (jump to first uncovered line)
/*
Copyright (c) 2013 Khaled Mammou - Advanced Micro Devices, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/


#pragma once
#ifndef O3DGC_BINARY_STREAM_H
#define O3DGC_BINARY_STREAM_H

#include "o3dgcCommon.h"
#include "o3dgcVector.h"

namespace o3dgc
{
    const unsigned long O3DGC_BINARY_STREAM_DEFAULT_SIZE       = 4096;
    const unsigned long O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0   = 7;
    const unsigned long O3DGC_BINARY_STREAM_MAX_SYMBOL0        = (1 << O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0) - 1;
    const unsigned long O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1   = 6;
    const unsigned long O3DGC_BINARY_STREAM_MAX_SYMBOL1        = (1 << O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1) - 1;
    const unsigned long O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32 = (32+O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0-1) / 
                                                                 O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;

    //! 
    class BinaryStream
    {
    public:    
        //! Constructor.
                                BinaryStream(unsigned long size = O3DGC_BINARY_STREAM_DEFAULT_SIZE)
                                {
                                    m_endianness = SystemEndianness();
                                    m_stream.Allocate(size);
                                };
        //! Destructor.
                                ~BinaryStream(void){};

        void                    WriteFloat32(float value, O3DGCStreamType streamType)
                                {
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        WriteFloat32ASCII(value);
                                    }
                                    else
                                    {
                                        WriteFloat32Bin(value);
                                    }
                                }
        void                    WriteUInt32(unsigned long position, unsigned long value, O3DGCStreamType streamType)
                                {
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        WriteUInt32ASCII(position, value);
                                    }
                                    else
                                    {
                                        WriteUInt32Bin(position, value);
                                    }
                                }
        void                    WriteUInt32(unsigned long value, O3DGCStreamType streamType)
                                {
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        WriteUInt32ASCII(value);
                                    }
                                    else
                                    {
                                        WriteUInt32Bin(value);
                                    }
                                }
        void                    WriteUChar(unsigned int position, unsigned char value, O3DGCStreamType streamType)
                                {
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        WriteUInt32ASCII(position, value);
                                    }
                                    else
                                    {
                                        WriteUInt32Bin(position, value);
                                    }
                                }
        void                    WriteUChar(unsigned char value, O3DGCStreamType streamType)
                                {
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        WriteUCharASCII(value);
                                    }
                                    else
                                    {
                                        WriteUChar8Bin(value);
                                    }
                                }
        float                   ReadFloat32(unsigned long & position, O3DGCStreamType streamType) const
                                {
                                    float value;
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        value = ReadFloat32ASCII(position);
                                    }
                                    else
                                    {
                                        value = ReadFloat32Bin(position);
                                    }
                                    return value;
                                }
        unsigned long           ReadUInt32(unsigned long & position, O3DGCStreamType streamType) const
                                {
                                    unsigned long value;
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        value = ReadUInt32ASCII(position);
                                    }
                                    else
                                    {
                                        value = ReadUInt32Bin(position);
                                    }
                                    return value;
                                }
        unsigned char           ReadUChar(unsigned long & position, O3DGCStreamType streamType) const
                                {
                                    unsigned char value;
                                    if (streamType == O3DGC_STREAM_TYPE_ASCII)
                                    {
                                        value = ReadUCharASCII(position);
                                    }
                                    else
                                    {
                                        value = ReadUChar8Bin(position);
                                    }
                                    return value;
                                }

        void                    WriteFloat32Bin(unsigned long position, float value) 
                                {
                                    assert(position < m_stream.GetSize() - 4);
                                    unsigned char * ptr = (unsigned char *) (&value);
                                    if (m_endianness == O3DGC_BIG_ENDIAN)
                                    {
                                        m_stream[position++] = ptr[3];
                                        m_stream[position++] = ptr[2];
                                        m_stream[position++] = ptr[1];
                                        m_stream[position  ] = ptr[0];
                                    }
                                    else
                                    {
                                        m_stream[position++] = ptr[0];
                                        m_stream[position++] = ptr[1];
                                        m_stream[position++] = ptr[2];
                                        m_stream[position  ] = ptr[3];
                                    }
                                }
        void                    WriteFloat32Bin(float value) 
                                {
                                    unsigned char * ptr = (unsigned char *) (&value);
                                    if (m_endianness == O3DGC_BIG_ENDIAN)
                                    {
                                        m_stream.PushBack(ptr[3]);
                                        m_stream.PushBack(ptr[2]);
                                        m_stream.PushBack(ptr[1]);
                                        m_stream.PushBack(ptr[0]);
                                    }
                                    else
                                    {
                                        m_stream.PushBack(ptr[0]);
                                        m_stream.PushBack(ptr[1]);
                                        m_stream.PushBack(ptr[2]);
                                        m_stream.PushBack(ptr[3]);
                                    }
                                }
        void                    WriteUInt32Bin(unsigned long position, unsigned long value) 
                                {
                                    assert(position < m_stream.GetSize() - 4);
                                    unsigned char * ptr = (unsigned char *) (&value);
                                    if (m_endianness == O3DGC_BIG_ENDIAN)
                                    {
                                        m_stream[position++] = ptr[3];
                                        m_stream[position++] = ptr[2];
                                        m_stream[position++] = ptr[1];
                                        m_stream[position  ] = ptr[0];
                                    }
                                    else
                                    {
                                        m_stream[position++] = ptr[0];
                                        m_stream[position++] = ptr[1];
                                        m_stream[position++] = ptr[2];
                                        m_stream[position  ] = ptr[3];
                                    }
                                }
        void                    WriteUInt32Bin(unsigned long value) 
                                {
                                    unsigned char * ptr = (unsigned char *) (&value);
                                    if (m_endianness == O3DGC_BIG_ENDIAN)
                                    {
                                        m_stream.PushBack(ptr[3]);
                                        m_stream.PushBack(ptr[2]);
                                        m_stream.PushBack(ptr[1]);
                                        m_stream.PushBack(ptr[0]);
                                    }
                                    else
                                    {
                                        m_stream.PushBack(ptr[0]);
                                        m_stream.PushBack(ptr[1]);
                                        m_stream.PushBack(ptr[2]);
                                        m_stream.PushBack(ptr[3]);
                                    }
                                }
        void                    WriteUChar8Bin(unsigned int position, unsigned char value) 
                                {
                                    m_stream[position] = value;
                                }
        void                    WriteUChar8Bin(unsigned char value) 
                                {
                                    m_stream.PushBack(value);
                                }
        float                   ReadFloat32Bin(unsigned long & position) const
                                {
                                    unsigned long value = ReadUInt32Bin(position);
                                    float fvalue;
                                    memcpy(&fvalue, &value, 4);
                                    return fvalue;
                                }
        unsigned long           ReadUInt32Bin(unsigned long & position)  const
                                {
                                    assert(position < m_stream.GetSize() - 4);
                                    unsigned long value = 0;
                                    if (m_endianness == O3DGC_BIG_ENDIAN)
                                    {
                                        value += (m_stream[position++]<<24);
                                        value += (m_stream[position++]<<16);
                                        value += (m_stream[position++]<<8);
                                        value += (m_stream[position++]);
                                    }
                                    else
                                    {
                                        value += (m_stream[position++]);
                                        value += (m_stream[position++]<<8);
                                        value += (m_stream[position++]<<16);
                                        value += (m_stream[position++]<<24);
                                    }
                                    return value;
                                }
        unsigned char           ReadUChar8Bin(unsigned long & position) const
                                {
                                    return m_stream[position++];
                                }

        void                    WriteFloat32ASCII(float value) 
                                {
                                    unsigned long uiValue;
                                    memcpy(&uiValue, &value, 4);
                                    WriteUInt32ASCII(uiValue);
                                }
        void                    WriteUInt32ASCII(unsigned long position, unsigned long value) 
                                {
                                    assert(position < m_stream.GetSize() - O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32);
                                    unsigned long value0 = value;
                                    for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
                                    {
                                        m_stream[position++] = (value0 & O3DGC_BINARY_STREAM_MAX_SYMBOL0);
                                        value0 >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
                                    }
                                }
        void                    WriteUInt32ASCII(unsigned long value) 
                                {
                                    for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
                                    {
                                        m_stream.PushBack(value & O3DGC_BINARY_STREAM_MAX_SYMBOL0);
                                        value >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
                                    }
                                }
        void                    WriteIntASCII(long value) 
                                {
                                    WriteUIntASCII(IntToUInt(value));
                                }
        void                    WriteUIntASCII(unsigned long value) 
                                {
                                    if (value >= O3DGC_BINARY_STREAM_MAX_SYMBOL0)
                                    {
                                        m_stream.PushBack(O3DGC_BINARY_STREAM_MAX_SYMBOL0);
                                        value -= O3DGC_BINARY_STREAM_MAX_SYMBOL0;
                                        unsigned char a, b;
                                        do
                                        {
                                            a  = ((value & O3DGC_BINARY_STREAM_MAX_SYMBOL1) << 1);
                                            b  = ( (value >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1) > 0);
                                            a += b;
                                            m_stream.PushBack(a);
                                        } while (b);
                                    }
                                    else
                                    {
                                        m_stream.PushBack((unsigned char) value);
                                    }
                                }
        void                    WriteUCharASCII(unsigned char value) 
                                {
                                    assert(value <= O3DGC_BINARY_STREAM_MAX_SYMBOL0);
                                    m_stream.PushBack(value);
                                }
        float                   ReadFloat32ASCII(unsigned long & position) const
                                {
                                    unsigned long value = ReadUInt32ASCII(position);
                                    float fvalue;
                                    memcpy(&fvalue, &value, 4);
                                    return fvalue;
                                }
        unsigned long           ReadUInt32ASCII(unsigned long & position)  const
                                {
                                    assert(position < m_stream.GetSize() - O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32);
                                    unsigned long value = 0;
                                    unsigned long shift = 0;
                                    for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
                                    {
                                        value  += (m_stream[position++] << shift);
                                        shift  += O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
                                    }
                                    return value;
                                }
        long                    ReadIntASCII(unsigned long & position) const
                                {
                                    return UIntToInt(ReadUIntASCII(position));
                                }
        unsigned long           ReadUIntASCII(unsigned long & position) const
                                {
                                    unsigned long value = m_stream[position++];
                                    if (value == O3DGC_BINARY_STREAM_MAX_SYMBOL0)
                                    {
                                        long x;
                                        unsigned long i = 0;
                                        do
                                        {
                                            x = m_stream[position++];
                                            value += ( (x>>1) << i);
                                            i += O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1;
                                        } while (x & 1);
                                    }
                                    return value;
                                }
        unsigned char           ReadUCharASCII(unsigned long & position) const
                                {
                                    return m_stream[position++];
                                }
        O3DGCErrorCode          Save(const char * const fileName) 
                                {
                                    FILE * fout = fopen(fileName, "wb");
                                    if (!fout)
                                    {
                                        return O3DGC_ERROR_CREATE_FILE;
                                    }
                                    fwrite(m_stream.GetBuffer(), 1, m_stream.GetSize(), fout);
                                    fclose(fout);
                                    return O3DGC_OK;
                                }
        O3DGCErrorCode          Load(const char * const fileName) 
                                {
                                    FILE * fin = fopen(fileName, "rb");
                                    if (!fin)
                                    {
                                        return O3DGC_ERROR_OPEN_FILE;
                                    }
                                    fseek(fin, 0, SEEK_END);
                                    unsigned long size = ftell(fin);
                                    m_stream.Allocate(size);
                                    rewind(fin);
                                    unsigned int nread = (unsigned int) fread((void *) m_stream.GetBuffer(), 1, size, fin);
                                    m_stream.SetSize(size);
                                    if (nread != size)
                                    {
                                        return O3DGC_ERROR_READ_FILE;
                                    }
                                    fclose(fin);
                                    return O3DGC_OK;
                                }
        O3DGCErrorCode          LoadFromBuffer(unsigned char * buffer, unsigned long bufferSize)
                                {
                                    m_stream.Allocate(bufferSize);
                                    memcpy(m_stream.GetBuffer(), buffer, bufferSize);
                                    m_stream.SetSize(bufferSize);
                                    return O3DGC_OK;
                                }
        unsigned long           GetSize() const
                                {
                                    return m_stream.GetSize();
                                }
    const unsigned char *       GetBuffer(unsigned long position) const
                                {
                                    return m_stream.GetBuffer() + position;
                                }
    unsigned char *             GetBuffer(unsigned long position)
                                {
                                    return (m_stream.GetBuffer() + position);
                                }                                
    unsigned char *             GetBuffer()
                                {
                                    return m_stream.GetBuffer();
                                }                                
    void                        GetBuffer(unsigned long position, unsigned char * & buffer) const
                                {
                                    buffer = (unsigned char *) (m_stream.GetBuffer() + position); // fix me: ugly!
                                }
    void                        SetSize(unsigned long size)
                                { 
                                    m_stream.SetSize(size);
                                };
    void                        Allocate(unsigned long size)
                                {
                                    m_stream.Allocate(size);
                                }

    private:
        Vector<unsigned char>   m_stream;
        O3DGCEndianness         m_endianness;
    };

}
#endif // O3DGC_BINARY_STREAM_H


Coverage Report

Created: 2025-06-22 07:30

Line	Count	Source (jump to first uncovered line)
1		/*
2		Copyright (c) 2013 Khaled Mammou - Advanced Micro Devices, Inc.
3
4		Permission is hereby granted, free of charge, to any person obtaining a copy
5		of this software and associated documentation files (the "Software"), to deal
6		in the Software without restriction, including without limitation the rights
7		to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8		copies of the Software, and to permit persons to whom the Software is
9		furnished to do so, subject to the following conditions:
10
11		The above copyright notice and this permission notice shall be included in
12		all copies or substantial portions of the Software.
13
14		THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15		IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16		FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17		AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18		LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19		OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20		THE SOFTWARE.
21		*/
22
23
24		#pragma once
25		#ifndef O3DGC_BINARY_STREAM_H
26		#define O3DGC_BINARY_STREAM_H
27
28		#include "o3dgcCommon.h"
29		#include "o3dgcVector.h"
30
31		namespace o3dgc
32		{
33		const unsigned long O3DGC_BINARY_STREAM_DEFAULT_SIZE = 4096;
34		const unsigned long O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0 = 7;
35		const unsigned long O3DGC_BINARY_STREAM_MAX_SYMBOL0 = (1 << O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0) - 1;
36		const unsigned long O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1 = 6;
37		const unsigned long O3DGC_BINARY_STREAM_MAX_SYMBOL1 = (1 << O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1) - 1;
38		const unsigned long O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32 = (32+O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0-1) /
39		O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
40
41		//!
42		class BinaryStream
43		{
44		public:
45		//! Constructor.
46		BinaryStream(unsigned long size = O3DGC_BINARY_STREAM_DEFAULT_SIZE)
47	0	{
48	0	m_endianness = SystemEndianness();
49	0	m_stream.Allocate(size);
50	0	};
51		//! Destructor.
52	0	~BinaryStream(void){};
53
54		void WriteFloat32(float value, O3DGCStreamType streamType)
55	0	{
56	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
57	0	{
58	0	WriteFloat32ASCII(value);
59	0	}
60	0	else
61	0	{
62	0	WriteFloat32Bin(value);
63	0	}
64	0	}
65		void WriteUInt32(unsigned long position, unsigned long value, O3DGCStreamType streamType)
66	0	{
67	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
68	0	{
69	0	WriteUInt32ASCII(position, value);
70	0	}
71	0	else
72	0	{
73	0	WriteUInt32Bin(position, value);
74	0	}
75	0	}
76		void WriteUInt32(unsigned long value, O3DGCStreamType streamType)
77	0	{
78	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
79	0	{
80	0	WriteUInt32ASCII(value);
81	0	}
82	0	else
83	0	{
84	0	WriteUInt32Bin(value);
85	0	}
86	0	}
87		void WriteUChar(unsigned int position, unsigned char value, O3DGCStreamType streamType)
88	0	{
89	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
90	0	{
91	0	WriteUInt32ASCII(position, value);
92	0	}
93	0	else
94	0	{
95	0	WriteUInt32Bin(position, value);
96	0	}
97	0	}
98		void WriteUChar(unsigned char value, O3DGCStreamType streamType)
99	0	{
100	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
101	0	{
102	0	WriteUCharASCII(value);
103	0	}
104	0	else
105	0	{
106	0	WriteUChar8Bin(value);
107	0	}
108	0	}
109		float ReadFloat32(unsigned long & position, O3DGCStreamType streamType) const
110	0	{
111	0	float value;
112	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
113	0	{
114	0	value = ReadFloat32ASCII(position);
115	0	}
116	0	else
117	0	{
118	0	value = ReadFloat32Bin(position);
119	0	}
120	0	return value;
121	0	}
122		unsigned long ReadUInt32(unsigned long & position, O3DGCStreamType streamType) const
123	0	{
124	0	unsigned long value;
125	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
126	0	{
127	0	value = ReadUInt32ASCII(position);
128	0	}
129	0	else
130	0	{
131	0	value = ReadUInt32Bin(position);
132	0	}
133	0	return value;
134	0	}
135		unsigned char ReadUChar(unsigned long & position, O3DGCStreamType streamType) const
136	0	{
137	0	unsigned char value;
138	0	if (streamType == O3DGC_STREAM_TYPE_ASCII)
139	0	{
140	0	value = ReadUCharASCII(position);
141	0	}
142	0	else
143	0	{
144	0	value = ReadUChar8Bin(position);
145	0	}
146	0	return value;
147	0	}
148
149		void WriteFloat32Bin(unsigned long position, float value)
150	0	{
151	0	assert(position < m_stream.GetSize() - 4);
152	0	unsigned char * ptr = (unsigned char *) (&value);
153	0	if (m_endianness == O3DGC_BIG_ENDIAN)
154	0	{
155	0	m_stream[position++] = ptr[3];
156	0	m_stream[position++] = ptr[2];
157	0	m_stream[position++] = ptr[1];
158	0	m_stream[position ] = ptr[0];
159	0	}
160	0	else
161	0	{
162	0	m_stream[position++] = ptr[0];
163	0	m_stream[position++] = ptr[1];
164	0	m_stream[position++] = ptr[2];
165	0	m_stream[position ] = ptr[3];
166	0	}
167	0	}
168		void WriteFloat32Bin(float value)
169	0	{
170	0	unsigned char * ptr = (unsigned char *) (&value);
171	0	if (m_endianness == O3DGC_BIG_ENDIAN)
172	0	{
173	0	m_stream.PushBack(ptr[3]);
174	0	m_stream.PushBack(ptr[2]);
175	0	m_stream.PushBack(ptr[1]);
176	0	m_stream.PushBack(ptr[0]);
177	0	}
178	0	else
179	0	{
180	0	m_stream.PushBack(ptr[0]);
181	0	m_stream.PushBack(ptr[1]);
182	0	m_stream.PushBack(ptr[2]);
183	0	m_stream.PushBack(ptr[3]);
184	0	}
185	0	}
186		void WriteUInt32Bin(unsigned long position, unsigned long value)
187	0	{
188	0	assert(position < m_stream.GetSize() - 4);
189	0	unsigned char * ptr = (unsigned char *) (&value);
190	0	if (m_endianness == O3DGC_BIG_ENDIAN)
191	0	{
192	0	m_stream[position++] = ptr[3];
193	0	m_stream[position++] = ptr[2];
194	0	m_stream[position++] = ptr[1];
195	0	m_stream[position ] = ptr[0];
196	0	}
197	0	else
198	0	{
199	0	m_stream[position++] = ptr[0];
200	0	m_stream[position++] = ptr[1];
201	0	m_stream[position++] = ptr[2];
202	0	m_stream[position ] = ptr[3];
203	0	}
204	0	}
205		void WriteUInt32Bin(unsigned long value)
206	0	{
207	0	unsigned char * ptr = (unsigned char *) (&value);
208	0	if (m_endianness == O3DGC_BIG_ENDIAN)
209	0	{
210	0	m_stream.PushBack(ptr[3]);
211	0	m_stream.PushBack(ptr[2]);
212	0	m_stream.PushBack(ptr[1]);
213	0	m_stream.PushBack(ptr[0]);
214	0	}
215	0	else
216	0	{
217	0	m_stream.PushBack(ptr[0]);
218	0	m_stream.PushBack(ptr[1]);
219	0	m_stream.PushBack(ptr[2]);
220	0	m_stream.PushBack(ptr[3]);
221	0	}
222	0	}
223		void WriteUChar8Bin(unsigned int position, unsigned char value)
224	0	{
225	0	m_stream[position] = value;
226	0	}
227		void WriteUChar8Bin(unsigned char value)
228	0	{
229	0	m_stream.PushBack(value);
230	0	}
231		float ReadFloat32Bin(unsigned long & position) const
232	0	{
233	0	unsigned long value = ReadUInt32Bin(position);
234	0	float fvalue;
235	0	memcpy(&fvalue, &value, 4);
236	0	return fvalue;
237	0	}
238		unsigned long ReadUInt32Bin(unsigned long & position) const
239	0	{
240	0	assert(position < m_stream.GetSize() - 4);
241	0	unsigned long value = 0;
242	0	if (m_endianness == O3DGC_BIG_ENDIAN)
243	0	{
244	0	value += (m_stream[position++]<<24);
245	0	value += (m_stream[position++]<<16);
246	0	value += (m_stream[position++]<<8);
247	0	value += (m_stream[position++]);
248	0	}
249	0	else
250	0	{
251	0	value += (m_stream[position++]);
252	0	value += (m_stream[position++]<<8);
253	0	value += (m_stream[position++]<<16);
254	0	value += (m_stream[position++]<<24);
255	0	}
256	0	return value;
257	0	}
258		unsigned char ReadUChar8Bin(unsigned long & position) const
259	0	{
260	0	return m_stream[position++];
261	0	}
262
263		void WriteFloat32ASCII(float value)
264	0	{
265	0	unsigned long uiValue;
266	0	memcpy(&uiValue, &value, 4);
267	0	WriteUInt32ASCII(uiValue);
268	0	}
269		void WriteUInt32ASCII(unsigned long position, unsigned long value)
270	0	{
271	0	assert(position < m_stream.GetSize() - O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32);
272	0	unsigned long value0 = value;
273	0	for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
274	0	{
275	0	m_stream[position++] = (value0 & O3DGC_BINARY_STREAM_MAX_SYMBOL0);
276	0	value0 >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
277	0	}
278	0	}
279		void WriteUInt32ASCII(unsigned long value)
280	0	{
281	0	for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
282	0	{
283	0	m_stream.PushBack(value & O3DGC_BINARY_STREAM_MAX_SYMBOL0);
284	0	value >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
285	0	}
286	0	}
287		void WriteIntASCII(long value)
288	0	{
289	0	WriteUIntASCII(IntToUInt(value));
290	0	}
291		void WriteUIntASCII(unsigned long value)
292	0	{
293	0	if (value >= O3DGC_BINARY_STREAM_MAX_SYMBOL0)
294	0	{
295	0	m_stream.PushBack(O3DGC_BINARY_STREAM_MAX_SYMBOL0);
296	0	value -= O3DGC_BINARY_STREAM_MAX_SYMBOL0;
297	0	unsigned char a, b;
298	0	do
299	0	{
300	0	a = ((value & O3DGC_BINARY_STREAM_MAX_SYMBOL1) << 1);
301	0	b = ( (value >>= O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1) > 0);
302	0	a += b;
303	0	m_stream.PushBack(a);
304	0	} while (b);
305	0	}
306	0	else
307	0	{
308	0	m_stream.PushBack((unsigned char) value);
309	0	}
310	0	}
311		void WriteUCharASCII(unsigned char value)
312	0	{
313	0	assert(value <= O3DGC_BINARY_STREAM_MAX_SYMBOL0);
314	0	m_stream.PushBack(value);
315	0	}
316		float ReadFloat32ASCII(unsigned long & position) const
317	0	{
318	0	unsigned long value = ReadUInt32ASCII(position);
319	0	float fvalue;
320	0	memcpy(&fvalue, &value, 4);
321	0	return fvalue;
322	0	}
323		unsigned long ReadUInt32ASCII(unsigned long & position) const
324	0	{
325	0	assert(position < m_stream.GetSize() - O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32);
326	0	unsigned long value = 0;
327	0	unsigned long shift = 0;
328	0	for(unsigned long i = 0; i < O3DGC_BINARY_STREAM_NUM_SYMBOLS_UINT32; ++i)
329	0	{
330	0	value += (m_stream[position++] << shift);
331	0	shift += O3DGC_BINARY_STREAM_BITS_PER_SYMBOL0;
332	0	}
333	0	return value;
334	0	}
335		long ReadIntASCII(unsigned long & position) const
336	0	{
337	0	return UIntToInt(ReadUIntASCII(position));
338	0	}
339		unsigned long ReadUIntASCII(unsigned long & position) const
340	0	{
341	0	unsigned long value = m_stream[position++];
342	0	if (value == O3DGC_BINARY_STREAM_MAX_SYMBOL0)
343	0	{
344	0	long x;
345	0	unsigned long i = 0;
346	0	do
347	0	{
348	0	x = m_stream[position++];
349	0	value += ( (x>>1) << i);
350	0	i += O3DGC_BINARY_STREAM_BITS_PER_SYMBOL1;
351	0	} while (x & 1);
352	0	}
353	0	return value;
354	0	}
355		unsigned char ReadUCharASCII(unsigned long & position) const
356	0	{
357	0	return m_stream[position++];
358	0	}
359		O3DGCErrorCode Save(const char * const fileName)
360	0	{
361	0	FILE * fout = fopen(fileName, "wb");
362	0	if (!fout)
363	0	{
364	0	return O3DGC_ERROR_CREATE_FILE;
365	0	}
366	0	fwrite(m_stream.GetBuffer(), 1, m_stream.GetSize(), fout);
367	0	fclose(fout);
368	0	return O3DGC_OK;
369	0	}
370		O3DGCErrorCode Load(const char * const fileName)
371	0	{
372	0	FILE * fin = fopen(fileName, "rb");
373	0	if (!fin)
374	0	{
375	0	return O3DGC_ERROR_OPEN_FILE;
376	0	}
377	0	fseek(fin, 0, SEEK_END);
378	0	unsigned long size = ftell(fin);
379	0	m_stream.Allocate(size);
380	0	rewind(fin);
381	0	unsigned int nread = (unsigned int) fread((void *) m_stream.GetBuffer(), 1, size, fin);
382	0	m_stream.SetSize(size);
383	0	if (nread != size)
384	0	{
385	0	return O3DGC_ERROR_READ_FILE;
386	0	}
387	0	fclose(fin);
388	0	return O3DGC_OK;
389	0	}
390		O3DGCErrorCode LoadFromBuffer(unsigned char * buffer, unsigned long bufferSize)
391	0	{
392	0	m_stream.Allocate(bufferSize);
393	0	memcpy(m_stream.GetBuffer(), buffer, bufferSize);
394	0	m_stream.SetSize(bufferSize);
395	0	return O3DGC_OK;
396	0	}
397		unsigned long GetSize() const
398	0	{
399	0	return m_stream.GetSize();
400	0	}
401		const unsigned char * GetBuffer(unsigned long position) const
402	0	{
403	0	return m_stream.GetBuffer() + position;
404	0	}
405		unsigned char * GetBuffer(unsigned long position)
406	0	{
407	0	return (m_stream.GetBuffer() + position);
408	0	}
409		unsigned char * GetBuffer()
410	0	{
411	0	return m_stream.GetBuffer();
412	0	}
413		void GetBuffer(unsigned long position, unsigned char * & buffer) const
414	0	{
415	0	buffer = (unsigned char *) (m_stream.GetBuffer() + position); // fix me: ugly!
416	0	}
417		void SetSize(unsigned long size)
418	0	{
419	0	m_stream.SetSize(size);
420	0	};
421		void Allocate(unsigned long size)
422	0	{
423	0	m_stream.Allocate(size);
424	0	}
425
426		private:
427		Vector<unsigned char> m_stream;
428		O3DGCEndianness m_endianness;
429		};
430
431		}
432		#endif // O3DGC_BINARY_STREAM_H
433