83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
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// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
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// patent or other intellectual property protection in this work. This means that
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// it may be modified, redistributed and used in commercial and non-commercial
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// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
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//
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// The ID3Lib authors encourage improvements and optimisations to be sent to the
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// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
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// submissions may be altered, and will be included and released under these terms.
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//
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// Mon Nov 23 18:34:01 1998
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// improved/optimized/whatever 10/30/00 JF
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#include <windows.h>
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#include <stdio.h>
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#include <memory.h>
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#include "id3_field.h"
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void ID3_Field::Set(uchar *newData, luint newSize)
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{
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Clear();
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if (newSize)
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{
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if (newSize == 4294967295/*-1*/)
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{
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ID3_THROW(ID3E_NoMemory);
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return;
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}
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if (!(data = (unsigned char *)calloc(newSize, sizeof(unsigned char))))
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{
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ID3_THROW(ID3E_NoMemory);
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}
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else
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{
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memcpy (data, newData, newSize);
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size = newSize;
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type = ID3FTY_BINARY;
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hasChanged = true;
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}
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}
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return;
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}
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void ID3_Field::Get(uchar *buffer, luint buffLength)
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{
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if (data && size && buffLength && buffer)
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{
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luint actualBytes = MIN(buffLength, size);
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memcpy(buffer, data, actualBytes);
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}
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}
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luint ID3_Field::ParseBinary (uchar *buffer, luint posn, luint buffSize)
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{
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luint bytesUsed = 0;
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bytesUsed = buffSize - posn;
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if (fixedLength != -1)
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bytesUsed = MIN (fixedLength, bytesUsed);
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Set(&buffer[ posn ], bytesUsed);
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hasChanged = false;
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return bytesUsed;
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}
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luint ID3_Field::RenderBinary (uchar *buffer)
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{
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luint bytesUsed = 0;
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bytesUsed = BinSize();
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memcpy(buffer, data, bytesUsed);
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hasChanged = false;
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return bytesUsed;
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}
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