ut_cadsr.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"
 
s16 SsUtChangeADSR(s16 vc, s16 vab_id, s16 prog, s16 old_note, u16 adsr1, u16 adsr2)
{
    const libsnd2_spu_voice_t *voice_struct;
 
    if ( (u16)vc >= 24u )
        return -1;
    voice_struct = &_svm_voice[vc];
    if ( voice_struct->m_vab_id != vab_id || voice_struct->m_prog != prog || voice_struct->m_note != old_note )
    {
        return -1;
    }
    _svm_sreg_buf[vc].m_adsr1 = adsr1;
    _svm_sreg_buf[vc].m_adsr2 = adsr2;
    _svm_sreg_dirty[vc] |= 0x30;
    return 0;
}