vm_noise.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "libsnd2_internal.h"
 
void _SsVmNoiseOnWithAdsr(s32 voll, s32 volr, s32 arg2, s32 arg3)
{
    int voice_idx_tmp;
 
    _svm_cur.m_prior = 127;
    voice_idx_tmp = (u8)_SsVmAlloc();
    _svm_cur.m_voice_idx = voice_idx_tmp;
    if ( voice_idx_tmp < _SsVmMaxVoice )
        vmNoiseOn2(_svm_cur.m_voice_idx, voll, volr, arg2, arg3);
}
 
void _SsVmNoiseOff(void)
{
    int v0;
 
    for ( v0 = 0; (s16)v0 < _SsVmMaxVoice; v0 += 1 )
    {
        if ( (_snd_vmask & (1 << v0)) == 0 )
        {
            const libsnd2_spu_voice_t *voice_struct;
 
            voice_struct = &_svm_voice[v0];
            if ( voice_struct->m_unk1d == 2 )
            {
                vmNoiseOff(v0);
            }
        }
    }
}
 
void _SsVmNoiseOn(u16 voll, u16 volr)
{
    _SsVmNoiseOnWithAdsr(voll, volr, 0x80ff, 0x5fc8);
}