amuse/lib/AudioGroupSampleDirectory.cpp

57 lines
1.6 KiB
C++

#include "amuse/AudioGroupSampleDirectory.hpp"
#include "amuse/Common.hpp"
namespace amuse
{
void AudioGroupSampleDirectory::Entry::swapBig()
{
m_sfxId = SBig(m_sfxId);
m_sampleOff = SBig(m_sampleOff);
m_unk = SBig(m_unk);
m_sampleRate = SBig(m_sampleRate);
m_numSamples = SBig(m_numSamples);
m_loopStartSample = SBig(m_loopStartSample);
m_loopLengthSamples = SBig(m_loopLengthSamples);
m_adpcmParmOffset = SBig(m_adpcmParmOffset);
}
void AudioGroupSampleDirectory::ADPCMParms::swapBig()
{
m_bytesPerFrame = SBig(m_bytesPerFrame);
m_hist1 = SBig(m_hist1);
m_hist2 = SBig(m_hist2);
for (int i=0 ; i<8 ; ++i)
{
m_coefs[i][0] = SBig(m_coefs[i][0]);
m_coefs[i][1] = SBig(m_coefs[i][1]);
}
}
AudioGroupSampleDirectory::AudioGroupSampleDirectory(const unsigned char* data)
{
const unsigned char* cur = data;
while (*reinterpret_cast<const uint32_t*>(cur) != 0xffffffff)
{
const AudioGroupSampleDirectory::Entry* ent =
reinterpret_cast<const AudioGroupSampleDirectory::Entry*>(cur);
std::pair<Entry, ADPCMParms>& store = m_entries[SBig(ent->m_sfxId)];
store.first = *ent;
store.first.swapBig();
if (store.first.m_adpcmParmOffset)
{
const AudioGroupSampleDirectory::ADPCMParms* adpcm =
reinterpret_cast<const AudioGroupSampleDirectory::ADPCMParms*>(data +
store.first.m_adpcmParmOffset);
store.second = *adpcm;
store.second.swapBig();
}
cur += 32;
}
}
}