Ipp32s mp3dec_decode_data_LayerI(MP3Dec *state)
{
Ipp32s i, ch, sb;
Ipp32f *pSampl[2];
Ipp32f scale;
Ipp32s (*sample)[32][36] = state->com.sample;
Ipp16s (*scalefactor)[32] = state->com.scalefactor_l1;
Ipp16s (*allocation)[32] = state->com.allocation;
samplefloatrw *smpl_rw = state->smpl_rw; // out of imdct
samplefloat *smpl_sb = state->smpl_sb; // out of subband synth
Ipp32s stereo = state->com.stereo;
Ipp16s *m_pOutSamples = state->com.m_pOutSamples;
pSampl[0] = (*smpl_sb)[0]; pSampl[1] = (*smpl_sb)[1];
for (ch = 0; ch < stereo; ch++) {
for (sb = 0; sb < 32; sb++) {
if (allocation[ch][sb] != 0) {
Ipp32s idx = allocation[ch][sb] + 1;
Ipp32s xor_coef;
Ipp32s *sample_ptr = &sample[ch][sb][0];
xor_coef = (1 << (idx - 1));
scale = mp3dec_scale_values[scalefactor[ch][sb]] *
mp3dec_l1_dequant_table[allocation[ch][sb]];
for (i = 0; i < 12; i++) {
(*smpl_rw)[ch][i][sb] =
((Ipp32f)(((sample_ptr[i] ^ xor_coef) + 1) << (32 - idx))) * scale;
}
} else {
for (i = 0; i < 12; i++) {
(*smpl_rw)[ch][i][sb] = 0;
}
}
} // for sb
for (i = 0; i < 12; i++) {
ippsSynthesisFilter_PQMF_MP3_32f((*(state->smpl_rw))[ch][i],
pSampl[ch] + i * 32,
state->pPQMFSpec[ch], 1);
}
} // for ch
ippsJoin_32f16s_D2L((const Ipp32f **)pSampl, stereo, 384, m_pOutSamples);
return 1;
}
void VM_MallocItemArray::DeleteItem(void* lpv)
{
for(Ipp32u i=0; i<m_count; i++)
{
if(m_array[i]->m_lpv == lpv)
{
#if defined(VM_MALLOC_STATISTIC)
m_array[i]->ReportFree();
#endif
vm_malloc_array.ChangeMemUsage(-Ipp32s(m_array[i]->m_size));
delete m_array[i];
m_array[i] = m_array[--m_count];
return;
}
}
}
