AudioCD_Helpers.cpp

#include "AudioCD_Helpers.h"

ULONG AddressToSectors( UCHAR Addr[4] )
{
    ULONG Sectors = ( Addr[1] * (CD_BLOCKS_PER_SECOND*60) ) + ( Addr[2]*CD_BLOCKS_PER_SECOND) + Addr[3];
    return Sectors - 150;
}

int cddb_sum(int n)
{
    /* a number like 2344 becomes 2+3+4+4 (13) */
    int ret = 0;

    while (n > 0) {
        ret = ret + (n % 10);
        n = n / 10;
    }

    return ret;
}

//! return rip percent 
int logRipPercent(int count, int pos)
{
    int ret = 0;
    if (count > 0)
    {
        ret =  ((pos * 100) / count);
    }
    return ret;
}

CWaveFileHeader::CWaveFileHeader()
{
    ZeroMemory( this, sizeof(*this) );
}


CWaveFileHeader::CWaveFileHeader( ULONG SamplingRate, USHORT BitsPerSample, USHORT Channels, ULONG DataSize )
{
    Set( SamplingRate, BitsPerSample, Channels, DataSize );
}


void CWaveFileHeader::Set( ULONG SamplingRate, USHORT BitsPerSample, USHORT Channels, ULONG DataSize )
{
    // Set Riff-Chunk
    CopyMemory( m_Riff_ID, "RIFF", 4 );
    m_Riff_Size = DataSize + 44;
    CopyMemory( m_Riff_Type, "WAVE", 4 );

    // Set Fmt-Chunk
    CopyMemory( m_Fmt_ID, "fmt ", 4 );
    m_Fmt_Length = 16;
    m_Fmt_Format = WAVE_FORMAT_PCM;
    m_Fmt_Channels = Channels;
    m_Fmt_SamplingRate = SamplingRate;
    m_Fmt_BlockAlign = Channels*BitsPerSample/8;
    m_Fmt_DataRate = Channels*BitsPerSample*SamplingRate/8;
    m_Fmt_BitsPerSample = BitsPerSample;

    // Set Data-Chunk
    CopyMemory( m_Data_ID, "data", 4 );
    m_Data_DataSize = DataSize;
}