109 lines
2.1 KiB
C++
109 lines
2.1 KiB
C++
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#include "extendedheader.h"
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#include "util.h"
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#include <string.h>
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#include <stdlib.h>
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#include "foundation/error.h"
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ID3v2_21::ExtendedHeaderBase::ExtendedHeaderBase(const ID3v2::Header &_tagHeader) : tagHeader(_tagHeader)
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{
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memset(&headerData, 0, sizeof(ExtendedHeaderData));
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data = 0;
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data_size = 0;
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}
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uint32_t ID3v2_21::ExtendedHeaderBase::Size() const
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{
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return headerData.size;
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}
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int ID3v2_21::ExtendedHeaderBase::Parse(const void *_data, size_t len, size_t *bytes_read)
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{
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if (len < SIZE)
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return 1;
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if (tagHeader.Unsynchronised())
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{
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*bytes_read = ID3v2::Util::UnsynchroniseTo(&headerData, _data, SIZE);
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}
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else
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{
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memcpy(&headerData, _data, SIZE);
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*bytes_read = SIZE;
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}
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_data = (const uint8_t *)_data+SIZE;
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/* read any data after the header */
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data_size = Size();
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if (data_size)
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{
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/* sanity check size */
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if (tagHeader.Unsynchronised())
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{
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if (ID3v2::Util::UnsynchronisedInputSize(_data, data_size) > len)
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return 1;
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}
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else if (data_size > len)
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return 1;
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/* allocate and read data */
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data = malloc(data_size);
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if (tagHeader.Unsynchronised())
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{
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*bytes_read += ID3v2::Util::UnsynchroniseTo(data, _data, data_size);
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}
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else
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{
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memcpy(data, _data, data_size);
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*bytes_read += data_size;
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}
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}
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return 0;
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}
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/* === ID3v2.3 === */
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ID3v2_3::ExtendedHeader::ExtendedHeader(const ID3v2::Header &_tagHeader) : ID3v2_21::ExtendedHeaderBase(_tagHeader)
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{
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}
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/* === ID3v2.4 === */
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ID3v2_4::ExtendedHeader::ExtendedHeader(const ID3v2::Header &_tagHeader) : ID3v2_21::ExtendedHeaderBase(_tagHeader)
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{
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}
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uint32_t ID3v2_4::ExtendedHeader::Size() const
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{
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return ID3v2::Util::Int28To32(headerData.size);
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}
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int ID3v2_4::ExtendedHeader::Parse(const void *_data, size_t len, size_t *bytes_read)
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{
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if (len < SIZE)
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return 1;
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memcpy(&headerData, _data, SIZE);
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*bytes_read = SIZE;
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_data = (const uint8_t *)_data+SIZE;
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/* read any data after the header */
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data_size = Size();
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if (data_size)
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{
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/* sanity check size */
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if (data_size > len)
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return 1;
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/* allocate and read data */
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data = malloc(data_size);
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if (!data)
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return NErr_OutOfMemory;
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memcpy(data, _data, data_size);
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*bytes_read += data_size;
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}
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return 0;
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}
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